JPH08196505A - Pipeline switching device for endoscope - Google Patents

Abstract

PURPOSE: To easily perform work such as the washing and disinfection, etc., of the whole pipeline switching device for endoscope by eliminating a part in which a bubble is held as being attached in the work of washing and disinfection, etc. CONSTITUTION: This device is constituted in such a way that the housing space 59 of a spring member 55 to press a piston part 26 in a prescribed direction is provided in the inside of a finger rest member 52, and also, a communication port 58 communicating between the housing space 59 of the spring member 55 and the outside of the finger rest member 52 is provided in the finger rest member 52.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endoscope for switching operation of a plurality of various conduits such as an air supply conduit, a water supply conduit and a suction conduit arranged in an endoscope. The present invention relates to a mirror line switching device.

[0002]

2. Description of the Related Art Generally, for example, in an endoscope for a digestive organ, a body cavity is used as an objective lens of an observation optical system arranged at a distal end portion of an insertion portion to be inserted into a body cavity of a patient during endoscopic examination. Mucus inside may adhere and obstruct the visual field.

Therefore, in such a case, by operating the air / water feeding conduit switching device provided in the operating portion of the endoscope, the air / air feeding to the nozzle side provided in the tip forming portion is performed. Air or cleaning water is supplied through a water supply channel, and air or cleaning water is sprayed from the nozzle onto the surface of the objective lens to remove mucus or the like adhering to the lens surface.

A typical example thereof is shown in Japanese Utility Model Laid-Open No. 2-88603. This apparatus is provided with a cylinder embedded in the operation portion of the endoscope and a piston made of a rigid body which is inserted into the cylinder so as to be able to move forward and backward and which switches air supply and water supply. Here, the piston is detachably attached to the cylinder by an attachment member.

Further, the cylinder is connected to a supply-side air supply pipe line from a gas supply source and a supply-side water supply pipe line from a cleaning water supply source, respectively. The trachea line and the nozzle side water supply line are connected to each other.

In the air / water feeding conduit switching device, the piston is advanced and retracted in the cylinder to establish a state in which the supply-source-side air-feeding conduit and the nozzle-side air-feeding conduit are in communication with each other. The side water pipe and the nozzle side water pipe are connected to each other.

Further, the crown of the piston extends to the outside of the operating portion of the endoscope. A finger rest is attached to the top of this piston. A space for accommodating a spring member for urging the finger contact portion upward (outside the operation portion) is provided inside the finger contact portion.

As a conduit switching device for endoscopes, in addition to the function of the air / water conduit switching device, in addition to the function of the gas / water switching device, an inert gas such as CO ₂ gas is used. There is also an air / water / gas switching device having a function of pressure-feeding, or a suction operation device for sucking dirt and the like from the distal end constituent portion of the endoscope. Further, these air / water / gas switching devices, suction operation devices, and the like have substantially the same configuration as the air / water switching devices, and the same applies to the inside of the finger contact portion attached to the top of the piston of each device. A storage space for the spring member is provided.

[0009]

By the way, it is necessary to clean and disinfect the endoscope after use (postoperatively).
During the cleaning and disinfecting operations of the endoscope, the air supply / water supply switching device, the air supply / water supply / gas supply switching device, and the suction operation device are simultaneously cleaned and disinfected.

However, the air / water switching device,
Since the opening space of the storage space of the biasing spring member in the finger rest mounted on the piston of the air supply water supply gas switching device, the suction operation device, etc. is small, cleaning these pistons with cleaning liquid,
There is a problem that air easily collects in the storage space of the spring member in the finger rest when immersed in the disinfectant solution. In this way, when cleaning or disinfecting work is performed with air pockets formed in the storage space of the spring member in the finger contact part, the cleaning liquid or disinfectant solution for cleaning or disinfecting work However, there is a problem in that the spring does not fully reach the entire spring member storage space in the finger rest. That is, when the piston is immersed in the cleaning liquid or the disinfecting liquid, the cleaning liquid or the disinfectant does not come into contact with the portion where the bubbles are attached, such as the spring member storage space in the finger rest, so that part is cleaned or disinfected. There is a problem that can not be done.

Therefore, normally, by performing a special operation such as sending a cleaning liquid or a disinfectant liquid by using another instrument such as a syringe inside the spring member accommodating space in the finger rest,
The air bubbles inside the spring member storage space of the finger rest are removed, but this is a troublesome work, and there is a problem in that the burden on the operator increases.

The present invention has been made in view of the above circumstances, and its purpose is to clean and disinfect the entire apparatus by eliminating the portion where air bubbles are kept in the state of being adhered during cleaning and disinfecting work. An object of the present invention is to provide a conduit switching device for an endoscope, which can easily perform the above work.

[0013]

[Means for Solving the Problems] A cylinder connected to a plurality of conduits provided in an endoscope, and a cylinder that is inserted into the cylinder so as to be able to move back and forth and has a finger contact portion at its outer end. A pipe line switching device for an endoscope, comprising a piston and switching the communication state of each pipe line according to the movement operation of the piston in the cylinder, wherein the piston is attached in a predetermined direction inside the finger contact portion. A space for accommodating the urging member for urging is provided, and the finger contact portion is provided with a communication port that communicates between the accommodation space for the urging member and the outside of the finger contact portion.

[0014]

When the cleaning or disinfecting work is performed after using the endoscope, the piston is removed from the main body of the switching device and the piston is dipped in the cleaning liquid or the disinfecting liquid. At this time, the air that has entered the biasing member storage space of the finger rest is discharged to the outside of the finger rest through the opening of the finger rest.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS.
Will be described with reference to. FIG. 2 shows a schematic configuration of the entire apparatus of the endoscope 1, and reference numeral 2 is an operation unit of the endoscope 1. The operating portion 2 is provided with a grip portion 2a for holding it by hand. Further, the operation part 2 is connected to the base end part of the insertion part 3 and the base end part of the universal cord 4.

A connector 5 is provided at the tip of the universal cord 4. The connector 5 is connected to a light source device 6 that supplies illumination light. Further, a tip forming portion 9 is provided at the tip portion of the insertion portion 3 via a bending portion 8. Here, the bending portion 8 of the insertion portion 3 can be remotely bent by an angle knob 7 provided on the operation portion 2.

Further, the distal end forming portion 9 of the insertion portion 3 is provided with an opening 9d of a forceps channel inserted in the insertion portion 3. The other opening of the forceps channel is communicated with the forceps opening 10 provided in the operation portion 2. A forceps plug 11 is attached to the forceps opening 10 as needed. A fold-preventing cover 12 for preventing damage is provided at a connecting portion of the base end portion of the insertion portion 3 with the operation portion 2.

Further, the tip forming section 9 has an observation window 9b,
A nozzle 9a capable of supplying air and water toward the observation window 9b and an illumination window 9c for illuminating an observation object are provided.

Further, the connector 5 of the universal cord 4
Further, an air supply device 13, a water supply device 14 and a gas supply device 15 are respectively connected to the video processor 16, and a video processor 16 for processing a video signal is connected to the connection adapter 16a.
Connected through. The video processor 16 includes a monitor 17 for displaying a subject image based on the video signal processed by the signal processing, and a VTR deck 18 for recording and reproducing the video signal.
A video printer 19 that prints a subject image using a video signal, a video disk 20 that is a large-capacity recording device that records a video signal, and the like are connected.

A switch 21 for operating the video processor 16 is provided on the operation unit 2. Further, in the operation section 2, a nozzle 9a that opens to the tip forming section 9 of the insertion section 3 is connected,
An air / water switching device 22 for supplying air and water, a suction operation device 23 for suctioning, and a gas operation device 24 for pressure-feeding a gas such as an inert gas such as CO ₂ are provided. There is. The air supply / water supply switching device 22, the suction operation device 23, and the gas supply operation device 24 constitute an endoscope conduit switching device, respectively.

Next, the disposition state of the respective conduits disposed inside the endoscope 1 will be described with reference to FIG. As shown in FIG. 3, a cylinder portion 25 for switching the air / water supply of the air / water supply switching device 22 is provided in the operation part 2 in the endoscope 1.
And the suction fluid switching cylinder portion 23c of the suction operating device 23
And the gas cylinder portion 24c of the gas feeding operation device 24 are arranged in a line.

The structure of the cylinder portion 25 and the conduit communicating with it will be described later. Suction fluid switching cylinder 23
The proximal end of the insertion-portion-side suction conduit 23a extending into the insertion portion 3 is connected to the side wall portion of c. Further, the universal cord 4 is attached to the lower part of the suction fluid switching cylinder 23c.
The base end portion of the connector-side suction pipe line 23b extended inside is connected.

Further, at the lower portion of the gas cylinder 24c, the base end of the gas pipe line 24a on the insertion portion side communicating with the air supply pipe line 31 and the gas pipe line 24 on the connector side in the universal cord 4 are provided.
The base end of b is connected.

Further, in the universal cord 4, in addition to the connector-side gas pipeline 24b, an air-feeding pipeline 32, a water-feeding pipeline 34, and a suction pipeline 23b are provided as connector-side pipelines. Here, the tip end of the air supply conduit 32 is connected to the air supply mouthpiece 79a of the connector 5, the tip end of the water supply conduit 34 is connected to the water supply mouthpiece 79b of the connector 5, and the suction conduit 2
The tip of 3b is connected to the suction mouthpiece 23e. The tip of the gas pipeline 24b is connected to the gas base 24e.

Further, an air supply pipe line 31, a water supply pipe line 33, and a suction pipe line 23a are arranged in the insertion portion 9 as insertion portion side pipe lines. Here, the tip portion of the air supply conduit 31 is connected to the nozzle 9 a of the tip forming portion 9. Further, the tip of the water supply conduit 33 is connected to the tip of the air supply conduit 31. Further, the tip end portion of the suction conduit 23a is the tip end forming portion 9
Is connected to the forceps channel opening 9d. Further, one end of the forceps conduit 10a is connected to the middle of the suction conduit 23a. The other end of the forceps conduit 10a is connected to the forceps opening 10 of the operation unit 2.

FIG. 1 shows a schematic construction of the air / water switching device 22. This air / water supply switching device 22
A cylinder portion 25 and a piston portion 26 that is detachably fitted inside the cylinder portion 25 are provided in the cylinder portion 25. Here, the cylinder portion 25 is the casing 2 of the operation portion 2.
It is fixed to a mounting hole 28 bored in 7 by means to be described later.

Further, the cylinder portion 25 is provided with a stepped metal cylinder body 30 having a substantially bottomed cylindrical shape. On the side wall of the cylinder body 30, in order from the opening surface side to the bottom side, there are a communication port 30a with a gas supply line 31 which is a gas outlet, a communication port 30b with a gas supply line 32 which is a gas inlet, and a liquid outlet. Communication port 30 with a certain water supply conduit 33
c, a communication port 30d with the water supply conduit 34 which is a liquid inlet is provided. Here, the respective communication ports 30a and 30c with the air supply pipe line 31 and the water supply pipe line 33 are arranged toward the insertion portion 3, and the communication ports 30d and 30b with the water supply pipe line 34 and the air supply pipe line 32 are arranged. Are arranged in the direction of the switch 21 provided on the operation unit 2.

A male screw-shaped screw portion 35 is formed on the outer peripheral surface of the end of the cylinder body 30 on the opening surface side. A cap 36 having a diameter larger than that of the mounting hole 28 is screwed into the screw portion 35 from the outside of the casing 27 of the operation portion 2. As a result, the cylinder body 30 is fixed to the casing 27.

Further, the base 36 of the cylinder body 30 is provided with an upper flange 36a and a lower flange 36b. Here, the mounting hole 2 is provided on the outer surface of the casing 27.
An annular groove 37 into which the lower flange 36b of the mouthpiece 36 is fitted is formed around the periphery of the ring 8. An O-ring 38 is attached to the inner bottom of the annular groove 37. Then, when the cylinder body 30 is fixed to the casing 27, the O-ring 38 inside the annular groove 37 is compressed by the lower flange 36b, and the mounting hole 28 is sealed, so that gas and liquid to the operating portion 2 can be prevented. It is designed to prevent intrusion.

The piston portion 26 is provided with a substantially cylindrical piston body 40 made of a material having rigidity such as metal or synthetic resin. A communication passage 41 is formed at the axial center of the piston body 40, the outer end surface (upper end surface) side being open and the inner end surface (lower end surface) side being closed. An opening 42 that opens in the left-right direction is formed at the lower end of the communication passage 41.
Are formed. An annular upper contact portion 43 and an annular lower contact portion 44 are integrally provided on the opening edge of the opening 42. Further, a protruding shaft portion 45 that coaxially protrudes downward is integrally provided at the lower end portion of the piston body 40.

On the outer peripheral surface of the piston body 40, an annular first packing support member 46 described later is fitted on the upper contact portion 43. Further, an annular second packing support member 47 described later is fitted to the outer peripheral surface of the protruding shaft portion 45 below the lower contact portion 44 of the piston body 40.

A metal retaining cylinder 48 fitted to the outer peripheral surface of the piston body 40 is fitted to the upper portion of the first packing support member 46. A flange portion 49 that comes into contact with the end surface of the first packing support member 46 is integrally provided at the lower end portion of the retaining cylinder 48.

Further, a screw hole portion 50 is formed on the inner peripheral surface of the upper end portion of the retaining cylinder 48. A finger holding member 52 in the shape of a substantially umbrella-shaped rotating body is screwed and fixed in the screw hole portion 50 of the retaining cylinder 48.

A shaft portion 52a is provided so as to project from the shaft center portion of the lower surface of the finger contact member 52. A male screw portion 52b screwed into the screw hole portion 50 is formed on the outer peripheral surface of the shaft portion 52a. Further, the leak hole 5 communicating with the communication passage 41 of the piston body 40 is formed in the shaft center portion of the shaft portion 52a of the finger contact member 52.
1 is formed.

Further, a substantially smooth finger contact portion 52c is formed on the upper surface of the finger contact member 52. This finger rest 52
A ring-shaped peripheral wall portion 52d protruding toward the cylinder body 30 side is formed on the outer peripheral surface of c. A storage space 59 for the spring member 55, which will be described later, is formed by the inner space of the peripheral wall portion 52d of the finger contact member 52.

A cylindrical piston support member 53 is fitted on the outside of the retaining cylinder 48. A piston stopper 54 projecting inward is integrally provided at the lower end of the piston support member 53. The lower surface of the piston stopper 54 is in contact with the open end surface of the cylinder body 30.

Further, a spring member (biasing member) 55 composed of a coil spring is mounted between the piston stopper 54 and the lower surface of the finger contact portion 52c of the finger contact member 52. Then, the finger contact member 52 is provided by the spring member 55.
Is urged upward (in a direction away from the cylinder body 30). When the spring member 55 is held in a natural state, the piston stopper 5 of the piston support member 53
4 is brought into contact with the flange portion 49 of the retaining cylinder 48 to lock the piston body 40. When the finger contact member 52 is pushed in from the outside, the piston body 40 is moved downward against the spring force of the spring member 55. In addition, in FIG. 1, the left side of the piston portion 26 is in a natural state, and the right side thereof is in a pushed state.

Further, a cover member 56 made of an elastic body is integrally provided outside the piston support member 53. A hook 57 is provided on the inner peripheral surface of the lower end portion of the cover member 56 so as to be engaged in an annular engagement groove portion between the upper flange 36a and the lower flange 36b of the mouthpiece 36.

The first packing support member 46 is divided into an upper member 46a and a lower member 46b having the same outer diameter. The upper member 46a and the lower member 46b are formed in a cylindrical shape from a material having rigidity such as metal or synthetic resin.

Further, the upper member 46a and the lower member 4
The inner diameter of 6b is set to a size that fits closely to the outer peripheral surface of the piston body 40. Also, the upper member 46a
Further, annular grooves 61 and 63 are formed on the outer peripheral surface of the lower member 46b. Here, as shown in FIG. 5, a packing 60 fitted into the annular groove 61 is integrally formed on the outer peripheral surface of the upper member 46a with no gap in the annular groove 61, and the joint thereof has no step. Is formed smoothly. Further, the valve body 62 fitted in the annular groove 63 is integrally formed on the outer peripheral surface of the lower member 46b with no gap in the annular groove 63, and the seam thereof is formed smoothly without any step. There is. In addition, contact portions 60a and 62a that elastically come into close contact with the inner peripheral surface of the cylinder body 30 are formed at the outer ends of the packing 60 and the valve body 62.

In addition, the upper member 46a and the lower member 46
At the time of assembly, after applying an adhesive to the outer peripheral surface of the piston main body 40 at the time of assembly,
6b and the upper member 46a are fitted in order, and the lower member 4
The lower end surface of 6b is brought into contact with the upper contact portion 43. continue,
After fitting the retaining tubular body 48 from the upper end side of the piston body 40, the male screw portion 52b of the shaft portion 52a of the finger contact member 52 is screwed into the threaded hole portion 50 of the retaining tubular body 48, thereby the upper member 46a. The lower member 46b is sandwiched between the upper contact portion 43 and the flange portion 49 of the retaining cylinder 48, and is adhesively fixed to the piston body 40.

In the state where the piston portion 26 is held in the cylinder portion 25 at the biased position by the spring member 55, the connector side air supply conduit 32 is opened by the packing body 60 and the valve body 62. Part 4
2, it is held in a state of being communicated with the leak hole 51 via the communication passage 41. At this time, the contact portion 62a of the valve body 62 is held in contact with the inner peripheral surface of the cylinder body 30, and the connection between the connector side air supply conduit 32 and the insertion portion side air supply conduit 31 is maintained in a blocked state. It is supposed to be done. Further, in this state, when the leak hole 51 is closed, the contact portion 62a of the valve body 62 is elastically deformed by the air supply pressure from the connector side air supply pipeline 32 side, and the connector side air supply pipeline 32 and the insertion section. The side air supply conduit 31 is switched to a communication state.

When the piston portion 26 is pushed into the cylinder portion 25 against the spring force of the spring member 55, the entire valve body 62 is formed on the inner peripheral surface of the cylinder body 30. By contacting the surface 30e, the communication between the connector side air supply conduit 32 and the insertion portion side air supply conduit 31 is blocked.

The second packing support member 47 is also divided into an upper member 47a and a lower member 47b having the same outer diameter, and the upper member 47a is made of a rigid material such as metal or synthetic resin. In addition, the lower member 47b is formed in a bottomed cylindrical shape.

The upper member 47a and the lower member 47b are sized so as to be closely fitted to the outer peripheral surface of the protruding shaft portion 45 of the piston body 40. Further, annular grooves 65 and 67 are formed on the outer peripheral surfaces of the upper member 47a and the lower member 47b, respectively. Here, the packing 64 is integrally formed on the outer peripheral surface of the upper member 47a with no gap in the annular groove 65, and the joint thereof is formed smoothly without any step. Similarly, the packing 6 is attached to the outer peripheral surface of the lower member 47b.
6 is integrally formed with the annular groove 67 without any gap, and the seam thereof is formed smoothly without any step.
The outer ends of the packings 64 and 66 are in contact with the inner peripheral surface of the cylinder body 30 elastically and closely.
6a is formed.

In addition, the upper member 47a and the lower member 47b
At the time of assembly, after applying an adhesive to the outer peripheral surface of the protruding shaft portion 45 of the piston body 40, the upper member 47a and the lower member 47b are sequentially fitted from the lower end portion of the protruding shaft portion 45, and the upper end surface of the upper member 47a. By being brought into contact with the lower contact portion 44, it is adhesively fixed to the protruding shaft portion 45. The packings 60, 64, 66 and the valve body 62 are made of an elastic material such as rubber.

Further, the flange portion 49 of the retaining cylinder 48
And the upper member 46a of the first packing support member 46
The entire circumference of the annular contact surface between the upper member 46a and the lower member 46b.
And the entire circumference of the annular contact surface between the inner peripheral surface of the lower member 46b and the outer peripheral surface of the piston body 40, and the lower member 46b.
The entire circumference of the annular contact surface between the upper contact portion 43 and the upper contact portion 43 is sealed by the sealing means 68 without any gap.

Similarly, the entire circumference of the annular contact surface between the upper member 47a and the lower contact portion 44 of the second packing support member 47, and the annular contact between the upper member 47a and the lower member 47b. The entire circumference of the contact surface and the entire circumference of the annular contact surface between the inner peripheral surface of the upper member 47a and the lower member 47b and the outer peripheral surface of the protruding shaft portion 45 are sealed by the sealing means 68 without any gap. ing.

Here, the sealing means 68 is formed as shown in FIG. 4, when the second packing support member 47 is described as an example. That is, the second packing support member 4
7, the lower end surface 69 of the upper member 47a and the lower member 4
The upper member 4 is in contact with the upper end surface 70 of the upper member 7b.
A minute gap 71 exists between the contact surfaces of the lower end surface 69 of 7a and the upper end surface 70 of the lower member 47b. Further, the lower end surface 69 of the upper member 47a and the upper end surface 7 of the lower member 47b are
A V-shaped concave portion 72 is formed on the outer side of the contact portion between 0 and 0 by the tapered chamfered portions 69a and 70a formed when removing burrs and the like.

Then, the sealing means 68 is injected into the gap 71 and the recess 72, and they are sealed without any gap.
In other words, the outer peripheral surface of the upper member 47a and the outer peripheral surface of the lower member 47b are formed so as to smoothly and smoothly connect to each other, and the recess 72 is also smooth and smooth with the outer peripheral surfaces of the upper member 47a and the lower member 47b. It is buried so as to tie to.

Further, in the state where the piston portion 26 is held in the cylinder portion 25 at the biased position by the spring member 55, the packings 64 and 66 serve to connect the connector side water supply conduit 34 and the insertion portion side water conduit 33. The space between them is maintained in a blocked state. Further, when the piston portion 26 is pressed against the cylinder portion 25 against the spring force of the spring member 55, the lower packing 66 is separated from the inner peripheral surface of the cylinder body 30, and the connector side water supply conduit 34 is provided.
And the water feed pipe 33 on the insertion section side can be switched to a communication state.

Further, in the finger contact portion 52c of the finger contact member 52 of the air / water switching device 22, the storage space 5 for the spring member 55 is provided.
Communication port 58 for communicating between 9 and the outside of the finger rest 52c
Is provided. This communication port 58 is not limited to one, and a plurality of communication ports 58 may be provided.
The shape and size of the communication port 58 may be any as long as the function of the air / water switching device 22 is not impaired, for example, a notch.

The communication port 58 is provided in the finger contact portion 52c of the finger contact member 52 in FIG.
8 is provided in the peripheral wall portion 52d of the finger contact member 52, or the communication port 58 is provided in both the finger contact portion 52c and the peripheral wall portion 52d, so that the internal space 59 of the finger contact member 52 and the external space of the finger contact member 52 are provided. It is also good to adopt a configuration in which the communication with and is improved.

Further, the suction operation device 23 and the gas supply operation device 24, which are other conduit switching devices for endoscopes of the air supply / water supply switching device 22, have substantially the same structure as the air supply / water supply switching device 22. ing.

That is, inside the suction switching cylinder portion 23c of the suction operating device 23, a switching valve member (not shown) that can be switched from the outside is mounted. Then, along with the switching operation of the switching valve member, the insertion portion side suction conduit 23
The a and the connector-side suction conduit 23b are communicated with or cut off from each other as necessary.

A gas cylinder valve mechanism (not shown) that can be switched from the outside is also mounted inside the gas cylinder portion 24c of the gas feeding operation device 24. The gas pipe line 24a on the insertion portion side and the gas pipe line 24b on the connector side are communicated with or cut off from each other in accordance with the switching operation of the gas cylinder valve mechanism. In FIG. 3, reference numerals 23d and 24d denote caps provided at the outer ends of the suction switching cylinder portion 23c and the gas cylinder portion 24c, respectively.

The top of the piston body (not shown) mounted on the suction fluid switching cylinder portion 23c of the suction operating device 23 and the gas cylinder portion 24 of the gas feeding operating device 24.
The finger contact member provided on the top of the piston body (not shown) attached to c is also provided with the same communication port 58 as the finger contact member 52 of the air / water switching device 22.

Further, in FIG. 3, after removing all the piston parts 26 of the air / water switching device 22, the suction operation device 23, and the gas supply operation device 24 from the operation part 2 of the endoscope 1, each cylinder part 25, 23c, 24c base 36, 23d, 2
4d shows a state in which an endoscope conduit cleaning device 82 (see FIG. 9) is detachably and watertightly mounted via a connector device 78 shown by a virtual line in FIG.

The connector device 78 is provided with a cleaning liquid supply tube 77a for the suction pipe line and a cleaning liquid supply tube 77b for the air / water supply pipe line. These tubes 77a and 77b are connected directly or via a common tube (not shown) to an appropriate cleaning liquid feeding means. Further, in the connector device 78, the cylinder parts 25, 2
An orifice (not shown) for adjusting the flow rate is provided so that an appropriate amount of fluid flows into 3c and 24c.

Next, the operation of the above configuration will be described.
First, when performing operations such as cleaning and disinfection of the endoscope 1 after the use of the endoscope 1 (after operation), as shown in FIG. 3, an air / water supply switching device is operated from the operation unit 2 of the endoscope 1. 22, suction operation device 2
3. All the piston parts 26 of the gas feeding operation device 24 are removed. At this time, for example, in the piston portion 26 of the air / water switching device 22, the hook 57 at the lower end portion of the cover member 56 has the flanges 3 above and below the base 36 of the cylinder portion 25.
The entire piston portion 26 is pulled out to the outside of the cylinder portion 25 in a state where the piston portion 26 is pulled out from the engaging groove portion between 6a and 36b and the engagement is released. Further, the suction operation device 23 and the gas feeding operation device 24 also pull out the entire piston portion to the outside of the cylinder portions 23c and 24c by the same operation.

Subsequently, the cylinder parts 25, 23c, 24
The endoscope channel cleaning device 8 is attached to the bases 36, 23d, 24d of c.
2 is detachably mounted in a watertight manner via a connector device 78 shown by a virtual line in FIG. In this state, the cleaning liquid, the disinfecting liquid, etc. are supplied from the cleaning liquid supply tubes 77a, 77b into the respective cylinder parts 25, 23c, 24c through the connector device 78 to clean the respective pipe lines in the endoscope 1, Work such as disinfection is performed.

Further, each of the cylinder parts 25 and 2 of the air / water supply switching device 22, the suction operation device 23, and the gas supply operation device 24.
The piston part 26 removed from 3c and 24c is washed,
In the cleaning liquid in the disinfectant container 81 (see FIG. 7), or by being immersed in the disinfecting liquid, work such as cleaning and disinfection of the entire piston portion 26 is performed. At this time, when the piston portion 26 is immersed in the cleaning liquid in the cleaning / disinfecting container 81 or the disinfecting liquid, the finger contact portion 52c of the finger contact member 52, which is the internal space 59 of the finger contact member 52, and the peripheral wall portion. An accommodation space 59 for the annular spring member 55 between 52d and the outer peripheral surface of the retaining tubular body 48, and an annular spring member between the inner peripheral surface of the piston support member 53 and the outer peripheral surface of the retaining cylindrical body 48. Even if air enters the storage space of 55, the air in the internal space 59 of the finger contact member 52 is completely discharged to the outside of the finger contact member 52 through the air vent 58.

Therefore, when cleaning, disinfecting or the like,
When the piston 2 is placed in the cleaning liquid in the disinfectant container 81 or in the disinfectant liquid.
6 is immersed, the spring member 55 in the finger rest 52c
Since it is possible to eliminate the fact that air bubbles are kept attached to the inside of the storage space 59, it is possible to send a cleaning liquid or a disinfecting liquid by using another device such as a syringe.
Cylinder parts of the air / water switching device 22, the suction operation device 23, and the gas operation device 24, as compared with the case of performing a troublesome work such as removing air bubbles inside the storage space 59 of the spring member 55 of the finger rest 52c. Operations such as cleaning and disinfection of the entire piston portion 26 removed from 25, 23c and 24c can be easily performed.

Therefore, the following effects are obtained with the above-mentioned structure. That is, each of the cylinder parts 2 of the air / water switch device 22, the suction operation device 23, and the gas operation device 24.
5, 23c, the entire finger portion 26 removed from the cleaning portion 24c, the finger portion 52c when the piston portion 26 is immersed in the cleaning liquid in the disinfecting container 81 or when the piston portion 26 is immersed in the disinfecting liquid. Since there is no possibility that air bubbles will remain attached inside the storage space 59 of the spring member 55 inside, the retaining cylinder 48 of the piston portion 26, the finger contact member 52, the piston support member 53, the piston stopper. 5
4 and the spring member 55 are not incompletely disinfected.

Further, when the communication port 58 is provided in the finger contact portion 52c at the crown of the finger contact member 52, when the user pushes the finger contact member 52 with his / her fingers, the peripheral portion of the communication port 58 slides. Since it serves as a stop, it is possible to improve workability when pushing the finger contact member 52 with a finger.

When the communication port 58 is provided in the peripheral wall portion 52d of the finger contact member 52, the user applies the finger contact member 5 with his / her fingers.
Since the communication port 58 does not touch the finger when pushing in 2, the operation is comfortable.

When the peripheral wall portion 52d of the finger contact member 52 and the finger contact portion 52c of the crown are provided with the communication ports 58, the finger contact member 52 is provided in two directions (upward and lateral directions).
Since air can be vented, the air venting work can be performed reliably.

Further, when the communication port 58 of the finger contact member 52 is formed by the notch, the communication port 58 can be easily processed. When the communication port 58 of the finger contact member 52 is formed by punching, the strength of the finger contact portion 52c is higher than that in the case of the cutout portion.

Further, when a plurality of communication ports 58 are provided, the air venting operation can be performed more reliably than when one communication port 58 is provided. If only one communication port 58 is provided, the processing cost can be reduced, so that the cost can be reduced.

6 and 7 show the second embodiment of the present invention. This is because the air vent communication port 58 of the finger rest member 52 of the piston portion 26 in the air / water switching device 22 of the first embodiment is connected to the finger rest portion 52c at the top of the finger rest member 52 and the peripheral wall portion 52d. It is provided in the corner portion 52e near the boundary area between them.

Next, the operation of the above configuration will be described.
First, when performing operations such as cleaning and disinfection of the endoscope 1 after use of the endoscope 1 (after surgery), the air / water switching device 22 and the suction operation device are operated from the operation unit 2 of the endoscope 1. 23, all the piston parts 26 of the gas feeding operation device 24 are removed, and the removed piston part 26 is immersed in the cleaning liquid in the cleaning / disinfecting container 81 shown in FIG. Work such as cleaning and disinfection of the entire 26 is performed. And
The piston portion 26 dipped in the cleaning liquid in the cleaning / disinfecting container 81 or immersed in the disinfecting liquid usually sinks to the inner bottom part of the cleaning / disinfecting container 81 in an inclined state as shown in FIG. At this time, the air vent communication port 58 of the finger contact member 52 has a finger contact portion 52c at the top of the finger contact member 52 and a peripheral wall portion 52d.
Since it is arranged at the corner portion 52e near the boundary area between the piston portion 2 and the piston portion 2 of the disinfecting container 81, the communicating portion 58 for venting the air of the finger contact member 52 in the piston portion 26 is formed.
6 can be directed obliquely upward in accordance with the inclined state. Therefore, even if the cleaning liquid in the cleaning / disinfecting container 81 or the piston portion 26 dipped in the disinfecting liquid sinks to the inner bottom portion of the disinfecting container 81, the piston portion 26 enters the internal space 59 of the finger contact member 52. Air can be smoothly vented from the air vent communication port 58 of the finger contact member 52.

Therefore, in addition to the effects of the above-described first embodiment, the above-mentioned structure has the cleaning liquid in the cleaning / disinfecting container 81 and the piston portion 26 immersed in the disinfecting liquid in the liquid. It is not necessary to move the air, and the air in the internal space 59 of the finger contact member 52 can be smoothly removed by immersing the piston portion 26 in the cleaning liquid in the cleaning / disinfecting container 81 or in the disinfecting liquid. . Therefore, the workability of cleaning and disinfecting the piston portion 26 can be further enhanced, and the burden on the operator can be further reduced.

In the present embodiment, the vent 58 is provided only at the corner 52e near the boundary between the finger rest 52c and the peripheral wall 52d at the crown of the finger rest 52. In addition to this, the communication port 58 may be provided in either the finger contact portion 52c at the crown of the finger contact member 52 or the peripheral wall portion 52d.

Here, the corner 52 near the boundary area between the finger rest 52c at the crown of the finger rest 52 and the peripheral wall 52d.
When the communication port 58 is provided in each of e and the peripheral wall portion 52d, when the user pushes the finger contact member 52 with his / her finger,
Since the communication port 58 does not touch the user's finger, the operation of the piston portion 26 does not feel uncomfortable, and the corner portion near the boundary area between the finger contact portion 52c at the crown of the finger contact member 52 and the peripheral wall portion 52d. The air escapes better than when the communication port 58 is provided only at 52e. Further, when the opening is provided in the boundary area 52c and the crown 52b, it prevents slipping when the finger-contact member is pushed in with a finger, and the air escape is better than when the opening 58 is provided only in the boundary area 52c. .

Further, the corner 52 near the boundary area between the finger rest 52c on the crown of the finger rest 52 and the peripheral wall 52d.
e, the communication port 58 may be provided in all of the finger contact portion 52c at the crown of the finger contact member 52 and the peripheral wall portion 52d. In this case, the air in the internal space 59 of the finger contact member 52 can be easily released regardless of the direction of the cleaning solution in the cleaning / disinfecting container 81 or the piston portion 26 immersed in the disinfecting solution. be able to.

Further, the shape and size of the communication port 58 may be any as long as the function of the air / water switching device 22 is not impaired, for example, notches or perforations may be used. Also, a plurality of communication ports 58 may be provided.

Here, when the communication port 58 is a notch, the work can be performed more easily than when the communication port 58 is formed into a hole shape. Further, when the communication port 58 is formed by perforation, the strength of the finger contact portion is higher than when the communication port 58 is formed by the notch. Furthermore, when a plurality of communication ports 58 are provided, the air that has entered the internal space 59 of the finger contact member 52 can be made easier than when one communication port 58 is provided. Also, the communication port 58
If only one is provided, the processing cost is low, so
Cost can be reduced.

8 (A) and 8 (B) to FIG. 10 show the air / water switching device 22 and the suction operating device 23 which are the endoscope channel switching devices of the first and second embodiments. A general endoscope conduit which is attached to the gas supply operation device 24 and supplies a cleaning liquid to various conduits such as air supply, water supply and suction of the endoscope 1 after use to clean the various conduits. It shows an example of the cleaning device 82.

As shown in FIG. 9, the endoscope duct cleaning device 82 is provided with a connector device 78 connected to the operation portion 2 side of the endoscope 1. The connector device 78 includes a suction injection cap 78a that is inserted into the suction fluid switching cylinder portion 23c of the endoscope 1 and the air / water feeding cylinder portion 2 of the endoscope 1.
5 is provided with an air / water supply inlet 78b, and a cleaning liquid supply tube 77a for suction line connected to the suction inlet 78a and an air supply connected to the air / water inlet 78b. Each one end of the cleaning liquid supply tube 77b for the water supply conduit is connected. The other end of each of the cleaning liquid supply tubes 77a and 77b has a Y-shaped branch pipe 83.
Is connected to one end of the cleaning liquid supply tube 77c.

Further, the other end of the cleaning liquid supply tube 77c is connected to the liquid supply mouthpiece 84 at one end of the hollow liquid supply means connector 127. This liquid feeding means connector 127
A syringe attachment base 128 to which a syringe 129 is attached is provided at the other end of the. As shown in FIG. 10, this syringe mounting base 128 has a liquid feeding means connector 127.
Is communicated with the cleaning liquid supply tube 77c through the internal conduit of the.

A taper surface having a taper angle substantially the same as the taper angle of the outer peripheral surface of the injection port portion 130 of the syringe 129 is formed on the inner peripheral surface of the syringe insertion hole of the syringe mounting base 128. And this syringe mounting base 128
The injection port 130 of the syringe 129 is inserted into the syringe insertion hole of the
The syringe 129 is attached to the syringe insertion hole of the syringe attachment base 128 in a state where the syringe 129 is joined to the tapered surface.

Further, as shown in FIG. 10, the endoscope conduit cleaning device 82 includes a liquid feeding means connector 127 and a syringe 1.
An endoscope duct cleaning device adapter 90 is provided between the device and the device 29. The endoscope conduit cleaning device adapter 90 is provided with a cylindrical adapter body 93 as shown in FIG. 8 (A). A male screw-shaped screw portion 133 is provided at one end of the adapter body 93. The proximal end portion of the cleaning device connecting portion 91 having a substantially cylindrical shape is screwed to the screw portion 133 of the adapter body 93.

Further, the valve portion 100a and the check member 132a are provided in the inner portion of the screw hole 91a of the cleaning device connecting portion 91.
Is provided. Then, when the screw hole 91a of the cleaning device connecting portion 91 is screwed into the screw portion 133 of the adapter body 93, the step portion at the back of the screw hole 91a of the cleaning device connecting portion 91 and the end edge portion of the adapter body 93 are formed. Valve part 1 between
00a and the check member 132a are sandwiched and fixed.

Further, a cleaning liquid injection port 124 having substantially the same shape as the injection port 130 of the syringe 129 is integrally provided at the tip of the cleaning device connection unit 91. Then, the cleaning liquid ejection port portion 124 of the cleaning device connecting portion 91 is inserted into the syringe insertion hole of the syringe mounting base 128 of the liquid feeding means connector 127, and the taper surface of the syringe insertion hole and the taper surface of the cleaning liquid ejection port portion 124 are formed. The cleaning device connecting portion 91 is attached to the syringe insertion hole of the syringe attachment base 128 in the joined state.

In this embodiment, the adapter body 9
3 is connected to the cleaning device connecting portion 91 by screwing, but the adapter body 93 and the cleaning device connecting portion 9 are connected.
Any other connecting means may be used as long as the water-tightness of the connecting portion with 1 can be secured.

A flange portion 95 is provided integrally with the adapter body 93 at the other end portion (end portion on the syringe 129 side) of the adapter body 93. The flange portion 95 does not necessarily have to be provided on the end portion of the adapter body 93, and may be provided on any portion of the outer peripheral surface of the adapter body 93, or may not be provided.

Further, an adapter internal pipe line 97 is formed inside the adapter body 93. An end portion of the adapter internal pipe line 97 on the syringe 129 side is communicated with an insertion hole of an adapter side attachment base 96 provided substantially at the center of the flange portion 95. On the inner peripheral surface of the insertion hole of the adapter side attachment mouthpiece 96, a taper surface having a taper angle substantially the same as the taper angle of the outer peripheral surface of the injection port portion 130 of the syringe 129 is formed. Then, the injection port portion 130 of the syringe 129 is inserted into the insertion hole of the attachment base 96, and the syringe 129 is attached with the tapered surface of the insertion hole of the attachment base 96 and the tapered surface of the injection port portion 130 joined together. It is designed to be attached to 96 insertion holes.

A liquid suction port 94 is provided in the middle of the adapter body 93. Inside the liquid suction port portion 94, a liquid suction pipe line 98 communicating with the adapter internal pipe line 97 is formed. The other end of the liquid suction conduit 98 has a liquid suction port 94.
It is open to the outside.

Further, the liquid suction port portion 94 is provided with a male screw-shaped screw portion 134. The proximal end portion of the substantially tubular liquid suction port connection portion 99 is screwed onto the screw portion 134 of the liquid suction port portion 94.

Further, the screw hole 99a of the liquid suction port connecting portion 99
A valve portion 100b and a check member 132b are provided in the inner part of the. Then, when the screw hole 99a of the liquid suction port connecting portion 99 is screwed into the screw portion 134 of the liquid suction port portion 94, the step portion and the liquid suction port portion at the inner part of the screw hole 99a of the liquid suction port connecting portion 99. 9
The valve portion 100b and the check member 132b are sandwiched and fixed between the edge portion 4 and the end edge portion 4.

A hollow cylindrical liquid suction pipe line mounting portion 120 is integrally formed at the tip of the liquid suction port connecting portion 99. One end of a liquid suction pipe 121 made of an elastic member is connected to the liquid suction pipe line mounting portion 120. Here, most of the outer diameter of the cylindrical portion of the liquid suction pipe line mounting portion 120 is the liquid suction pipe 1.
The inner diameter dimension of the large-diameter portion 12 is substantially the same as the inner diameter dimension of the liquid absorbing tube 121.
0a is formed. Therefore, when the liquid suction pipe 121 is connected to the liquid suction pipe line mounting portion 120, the inner wall surface of the liquid suction pipe 121 and the liquid suction pipe line mounting portion 120 are elastically moved by the liquid suction pipe 121.
Is pressed against the outer peripheral surface of the liquid absorption pipe 12 due to the frictional force.
1 is attached and fixed to the liquid suction conduit attachment portion 120.

Further, the other end of the liquid suction pipe 121 is, for example, a liquid suction port 123 which is immersed in the cleaning liquid in the cleaning liquid storage container.
Is connected to a liquid suction port side liquid suction pipe line mounting portion 122 formed integrally with the liquid suction port side. This liquid suction port side liquid suction pipe line mounting portion 122
Is connected to the liquid suction pipe 121 by the same structure as the liquid suction pipe mounting portion 120.

Further, a filter 124 formed of a coarse mesh is adhesively fixed to the opening end of the liquid suction port 123. However, when the cleaning liquid sucked from the liquid suction port 123 is sufficiently clean, the filter 124 does not have to be attached specially, and the liquid suction pipe 121 is provided inside the cleaning liquid storage container without providing the liquid suction port 123. The cleaning liquid may be directly sucked.

Further, the valve portion 10 of the cleaning device connecting portion 91
0a and the valve portion 100b of the liquid suction port connection portion 99 are shown in FIG.
As shown in (B), a base plate 85 formed of a disk-shaped elastic member is provided. The base plate 85 is provided with a substantially C-shaped (horseshoe-shaped) slit 126. Then, the slit 126 in the base plate 85
A tongue portion 131 that can be opened and closed is formed by the inner portion of the.

Further, the non-return member 132a of the cleaning device connecting portion 91 and the non-return member 132b of the liquid suction port connecting portion 99 are formed by ring-shaped members. The outer diameter of the rings of the check members 132a and 132b is the same as the valve portion 100.
The outer diameter of the base plates 85 of a and 100b is set to be substantially the same as the outer diameter of the base plate 85, and the inner diameter of the ring is set to be smaller than the outer diameter of the tongue 131.

Next, the endoscope conduit cleaning device 82 having the above structure
The operation of the endoscope duct cleaning device adapter 90 will be described. When the endoscope duct cleaning device 82 is used, the cleaning device connecting portion 91 of the endoscope duct cleaning device adapter 90 is connected to the liquid feeding means connector 127 of the endoscope duct cleaning device 82.
Is attached, and the syringe injection port portion 130 of the syringe 129 is connected to the adapter-side attachment mouthpiece 96 of the endoscope conduit cleaning device adapter 90.

In addition, from the operation section 2 of the endoscope 1, the air / water supply switching device 22, the suction operation device 23, and the gas supply operation device 24.
After all the pistons 26 of the cylinder are removed, the caps 36, 23d, 24d of the cylinders 25, 23c, 24c are removed.
The endoscope duct cleaning device 82 is detachably mounted in a watertight manner via the connector device 78.

Subsequently, the endoscope conduit cleaning device adapter 90
The liquid suction port 123 is immersed in the cleaning liquid in the cleaning liquid storage container (not shown). In this state, when the piston 135 of the syringe 129 is pulled, suction pressure acts on the liquid suction conduit 98 via the adapter internal conduit 97, so that the valve portion 10
8B, the tongue portion 131 of 0b is pulled upward, and the liquid suction port portion 123, the liquid suction pipe 121, the adapter internal conduit 97, and the inside of the syringe 129 communicate with each other, and the syringe 129 The cleaning liquid is drawn inside.

At this time, the tongue portion 131 of the valve portion 100a is pulled rightward in FIG. 8A by the suction pressure from the syringe 129, but the check member 132a moves the tongue portion 131 of the valve portion 100a. Is stopped, the fluid is not sucked from the direction of the cleaning liquid supply tube 77c to the adapter internal conduit 97 side. In this way, the syringe 129 is filled with the cleaning liquid.

Next, a syringe 129 filled with the cleaning liquid is used.
When the cylinder piston 135 is pushed in, a pressing force acts in the adapter internal pipe line 97 in the leftward direction in FIG. 8A. Due to this pressing force, the tongue portion 131 of the valve portion 100a is pushed out from the normal state toward the cleaning liquid supply tube 77c, and the cleaning liquid supply tube 77c, the adapter internal conduit 97, and the inside of the syringe 129 communicate with each other. To do. Therefore, the cleaning liquid in the syringe 129 is sent into the cleaning liquid supply tube 77c through this path, and is further distributed to the cleaning liquid supply tubes 77a and 77b, and each tube in the endoscope 1 is passed through the connector device 78. The cleaning liquid is sent to the path system.

At this time, the endoscope duct cleaning device adapter 90
The tongue part 131 of the valve part 100b is pushed downward in FIG. 8 (A) by the pressing force acting in the adapter internal conduit 97, and is pressed against the check member 132b.
Since the tongue 131 of 00b is held at the closed position, the cleaning liquid is not sent to the liquid suction pipe 121.

After the above-mentioned washing liquid feeding operation, the piston 135 of the syringe 129 is pulled again to fill the inside of the syringe 129 with the washing liquid, and then the piston 135 of the syringe 129 is pushed to operate. A cleaning liquid is fed to each pipe system in the endoscope 1. Therefore, by alternately repeating the pulling operation and the pushing operation of the piston 135 of the syringe 129, the filling operation of the cleaning liquid into the syringe 129 and the feeding operation of the cleaning liquid to each duct system in the endoscope 1 are performed. And can be repeated alternately.

Therefore, the following effects can be obtained with the above structure. That is, since the endoscope duct cleaning device adapter 90 is provided between the liquid feeding means connector 127 of the endoscope duct cleaning device 82 and the syringe 129, every time the cleaning liquid is fed to the endoscope 1 side. Further, the cleaning liquid can be repeatedly filled in the liquid feeding means without removing the liquid feeding means from the endoscope duct cleaning device 82. Therefore, as compared with the case where the liquid feeding means is detached from the endoscope duct cleaning device every time the washing liquid is fed and the washing liquid is replenished to the liquid feeding means, the washing liquid is fed to each duct of the endoscope 1. Labor is reduced.

Further, the cleaning device connecting portion 9 of the endoscope conduit cleaning device adapter 90 having a structure adapted to the liquid feeding means connector 127 of each of the plurality of types of endoscope conduit cleaning devices.
By providing 1, the valve function can be easily added to all the endoscope duct cleaning devices.

Further, when the cleaning device connecting portion 91 is formed to have substantially the same shape as the injection port portion 130 of the syringe 129, the endoscope conduit cleaning device 82 in which the syringe 129 can be connected to the liquid feeding means connector 127 is used. Therefore, the endoscope duct cleaning device adapter 90 can be reliably connected. Moreover, the cleaning liquid injection port portion 124 having substantially the same tapered shape as the injection port portion 130 of the syringe 129 is provided at the tip of the cleaning device connection portion 91 of the endoscope duct cleaning device adapter 90, and the cleaning liquid of the cleaning device connection portion 91 is provided. The injection port portion 124 is inserted into the syringe insertion hole of the syringe attachment base 128 of the liquid feeding means connector 127, and the cleaning device connecting portion 91 is connected in a state where the tapered surface of the syringe insertion hole and the tapered surface of the cleaning liquid injection port portion 124 are joined. Has a structure to be attached to the syringe insertion hole of the syringe attachment base 128, so that the tapered portion of the connection portion between the endoscope conduit cleaning device adapter 90 and the liquid feeding means connector 127 can be easily cleaned. .

Further, in the present embodiment, the adapter side attachment cap 9
6, the injection port portion 13 of the syringe 129 is provided on the inner peripheral surface of the insertion hole 6.
A taper surface having a taper angle substantially the same as the taper angle of the outer peripheral surface of 0 is formed, and the syringe 1
The syringe 129 is attached to the insertion hole of the attachment mouthpiece 96 in a state where the tapered surface of the syringe insertion hole and the tapered surface of the injection opening portion 130 are joined when the injection port portion 130 of 29 is inserted. Therefore, the adapter side mounting cap 9
6 and the injection port 130 of the syringe 129 are firmly joined to each other, and the connecting portion has a tapered shape and a simple structure, so that the portion can be easily washed.

In this embodiment, the syringe mounting mouthpiece 128 of the endoscope channel cleaning device 82 is a tapered hole, but the syringe mounting structure is such that the luer lock type syringe 86 shown in FIG. 11 can be screwed. A base 87 may be provided.

Here, the luer lock type syringe 86 has a large-diameter cylindrical outer cylinder portion 86a arranged concentrically.
A cylindrical injection portion 86b having a smaller diameter than the outer cylinder portion 86a is provided. Further, a screw hole portion 86c is formed on the inner peripheral surface of the outer tubular portion 86a.

Further, a flange portion 87a serving as a connecting portion for the luer lock type syringe 86 is provided at the tip of the syringe mounting base 87. This flange portion 87a
On the outer peripheral surface of the screw hole portion 8 of the luer lock type syringe 86.
A male screw-shaped screw portion 87b that is screwed with the screw 6c is provided. In addition, when the syringe mounting base 87 and the luer lock type syringe 86 are coupled, the injection portion 8 of the luer lock type syringe 86 is inserted into the syringe insertion hole of the syringe mounting base 87.
6b is inserted.

In the above embodiment, the syringe attachment base 8
7, a flange portion 87a is provided at the tip end portion, and a male screw shaped screw portion 87b which is screwed into the screw hole portion 86c of the luer lock type syringe 86 is provided on the outer peripheral surface of the flange portion 87a. A male screw-shaped screw portion 87b that is screwed into the screw hole portion 86c of the luer lock type syringe 86 may be directly provided at the tip of the syringe mounting base 87.

As a method other than the above, for example, the syringe 12 is attached to the inner peripheral surface of the syringe insertion hole of the syringe attachment base 96.
9 is provided with a ring-shaped or tubular elastic member having an inner diameter slightly smaller than the outer diameter of the injection port 130, and the syringe 129 is attached and fixed by the frictional force generated between the elastic member and the injection port 130 of the syringe 129. You may take the structure. In this case, the liquid does not leak from the connecting portion between the inner peripheral surface of the syringe insertion hole of the syringe attachment base 96 and the injection port 130 of the syringe 129, so that the liquid can be efficiently transferred.

Further, in this embodiment, the syringe 129 is attached to the liquid feeding means connector 127, but the liquid feeding means attached to the liquid feeding means connector 127 is not particularly limited to the syringe 129. Any liquid means may be used.

Further, in this embodiment, the valve portion 100b and the check member 132b of the endoscope conduit cleaning device adapter 90 are provided in the liquid suction port connection portion 99, but they have the same function. The valve may have any structure as long as it is mounted, and the mounting position is not particularly limited to this. For example, the valve may be mounted on the liquid suction pipe 121, the liquid suction port 123, or the like.

Further, in the present embodiment, the number of the liquid absorption pipes 121 is one.
Although it is a book, a plurality of liquid absorption tubes 121 may be provided. Further, the connecting method between the liquid suction port portion 123 and the liquid absorbing tube 121 does not have to be the method based on the above-mentioned frictional force, and any connecting means may be provided, for example, a connection such as bonding or thread binding. Means may be provided. Further, the liquid suction port 123 and the liquid suction pipe 12
1 may be integrally molded.

Further, in the present embodiment, the adapter side attachment cap 9
6, the injection port portion 13 of the syringe 129 is provided on the inner peripheral surface of the insertion hole 6.
A taper surface having a taper angle substantially the same as the taper angle of the outer peripheral surface of 0 is formed, and the syringe 1
The syringe 129 is attached to the insertion hole of the attachment mouthpiece 96 in a state where the tapered surface of the syringe insertion hole and the tapered surface of the injection opening portion 130 are joined when the injection port portion 130 of 29 is inserted. However, for example, a syringe 129
By providing a ring-shaped or tubular elastic member having an inner diameter slightly smaller than the outer diameter of the injection port portion 130 on a part of the inner peripheral surface of the insertion hole of the adapter-side mounting cap 96, or the entire inner peripheral surface, The syringe 12 is inserted into the insertion hole of the attachment base 96.
The syringe 129 may be attached and fixed by a frictional force generated between the elastic member and the outer peripheral surface of the injection port 130 of the syringe 129 when the injection port 130 of 9 is inserted.

Further, the attachment mouthpiece 96 of the endoscope conduit cleaning device adapter 90 may be constructed so as to be connectable with the syringe 86 with a luer lock as shown in FIG. In this case, luer lock type syringe 86 and adapter side attachment base 9
The connecting portion between 6 and 6 becomes strong.

Furthermore, in this embodiment, the syringe 129 is attached to the adapter side attachment mouthpiece 96, but any means for connecting to the adapter side attachment mouthpiece 96 may be used as long as it is a liquid feeding means. , Especially syringe 1
It need not be limited to 29.

Further, in the present embodiment, the cleaning liquid injection port portion 124 of the endoscope duct cleaning device adapter 90 is formed to have substantially the same shape as the injection port portion 130 of the syringe 129. An outer diameter smaller than that of the injection port 130 of the syringe 129 and a ring shape (not shown) having an outer diameter slightly larger than the inner diameter of the syringe insertion hole of the syringe mounting base 128 on part or the entire outer surface of the cleaning liquid injection port 124. By providing the tubular elastic member, the cleaning liquid injection port portion 124 is moved to the syringe mounting base 128 by the frictional force generated between the elastic member and the syringe mounting base 128.
It may be attached to and fixed to the same to have the same function as that of this embodiment.

In this case, the cleaning liquid injection port portion 124 of the endoscope duct cleaning device adapter 90 and the syringe mounting base 128.
Since there is no leakage of liquid from the connection portion between the syringe insertion hole and the syringe insertion hole, efficient liquid transfer can be performed.

Further, for the endoscope duct cleaning device 82 having the syringe mounting base 87 capable of being combined with the luer lock type syringe 86 shown in FIG. 11, the cleaning liquid injection port of the endoscope duct cleaning device adapter 90 is used. The portion 124 may be modified to have the same structure as the luer lock type syringe 86 that can be coupled to the syringe mounting base 87.

In this case, the syringe pipe fitting 87 of the endoscope duct cleaning device 82 and the endoscope duct cleaning device adapter 90 are used.
Since the connecting portion with the cleaning liquid injection port 124 is stronger than the tapered connecting portion, the cleaning device connecting portion 91 can be prevented from coming off from the liquid feeding means connector 127 during the cleaning operation.

FIG. 12 shows a modified example of the endoscope duct cleaning device 82 shown in FIG. This is provided with an adapter mounting base 111 having a structure connectable to the cleaning device connecting portion 91 of the endoscope conduit cleaning device adapter 90, and the adapter mounting base 111 is attached to the endoscope conduit cleaning device 82 by a syringe mounting base 128. It is installed instead of.

That is, as shown in FIG. 12, a plurality of endoscope conduit cleaning devices 112 and 113 of different types are equipped with adapter attachment bases 111 having the same connection structure. The cleaning device connecting portion 91 of the endoscope conduit cleaning device adapter 90 can be connected to all the endoscope conduit cleaning devices 112 and 113 to which the adapter attachment base 111 is attached. Here, the method of connecting the adapter mounting base 111 and the cleaning device connecting portion 91 is not particularly limited as long as the connecting portion has a watertight structure.

Incidentally, the above-mentioned endoscope duct cleaning devices 112, 1
As an example of 13, the observation window 9 at the tip of the insertion portion 3 of the endoscope 1
In order to expand the body cavity for observation or to remove water droplets attached to the observation window 9b, a water supply pipe line cleaning device connected to the water supply pipe line 33 having a function of supplying water by a nozzle 9a provided in the vicinity thereof. An air / gas feed conduit cleaning device connected to the provided air / gas feed conduit 31, the air feed conduit 31,
An air / water supply conduit cleaning device connected to the air / water supply conduit having the function of the water supply conduit 33, and a sub connecting the water supply conduit 33 and the water supply means for increasing the water supply pressure of the water supply conduit 33. Sub-water supply pipe line cleaning device connected to water supply pipe line, suction pipe line cleaning device connected to suction pipe line 23a for sucking mucus or the like from the tip of the insertion portion 3 and for inserting a treatment instrument, endoscope 1 A front water supply line cleaning device connected to a front water supply line for supplying and cleaning the affected part having poor visibility due to blood or the like from the tip part of the device, and a plurality of functions of the various cleaning devices described above. There is a combined type cleaning device that has both.

Therefore, in the above-described structure, one endoscope conduit cleaning device adapter 90 can be connected to a plurality of endoscope conduit cleaning devices of different types. Therefore, it is not necessary to manufacture the endoscope duct cleaning device adapter 90 corresponding to each of the plurality of endoscope duct cleaning devices of different types, which leads to cost reduction.

FIG. 13 shows a modified example of the endoscope duct cleaning device adapter 90 of FIG. 8A. This is provided with a substantially cylindrical valve support member 114 at the tip of the adapter body 93 of the endoscope conduit cleaning device adapter 90 of FIG. 8A, and the valve support member 114 and the cleaning device connecting portion 91.
And a flexible tube 115 are connected between them.

Here, the screw hole 114a at the base end portion of the valve support member 114 is the male screw portion 13 at the tip end portion of the adapter body 93.
3 is screwed on. Then, when the screw hole 114 a of the valve support member 114 is screwed into the screw portion 133 of the adapter body 93, between the stepped portion at the inner part of the screw hole 114 a of the valve support member 114 and the end edge portion of the adapter body 93. Valve part 100
a and the non-return member 132a are sandwiched and fixed. The other parts are similar to those of the endoscope conduit cleaning device adapter 90 of FIG. 8A, and the description thereof will be omitted here.

Therefore, in the above-described structure, the flexible tube 115 between the valve support member 114 and the cleaning device connecting portion 91 is deformed so that the cleaning device connecting portion of the endoscope conduit cleaning device adapter 90 is deformed. Since 91 can be used in any direction, the cleaning device connecting portion 91 of the endoscope conduit cleaning device adapter 90 can be compared with the endoscope conduit cleaning device adapter 90 of FIG. Workability at the time of connecting to the endoscope duct cleaning device 82 and sending a liquid is good.

14 (A) and 14 (B) show another structural example of the air / water switching device 22 of the first embodiment. This is the air / water switching device 22 of the first embodiment.
The finger contact portion 52c at the crown of the finger contact member 52 is provided with four bubble observation windows 141 for observing the bubbles inside the storage space 59 of the spring member 55 from the outside.

The bubble observation window 141 has four openings 141a formed around the leak hole 51 in the finger contact portion 52c at the crown of the finger contact member 52, and each opening 141a is made of, for example, transparent glass or transparent plastic. The translucent member 141 formed of a transparent material or a semitransparent material
It is formed by burying b. Where the four openings 1
A transparent member 141b made of a transparent material and a transparent member 141b made of a semi-transparent material may be appropriately and selectively used in combination for 41a.

Therefore, in the above structure, the piston portion 26 removed from the cylinder portions 25, 23c, 24c of the air / water switching device 22, the suction operation device 23, and the gas operation device 24 is cleaned and disinfected. Cleaning the entire piston portion 26 by being immersed in the cleaning liquid in the container 81 or the disinfecting liquid,
Even when air enters the spring member storage space 59 of the finger contact member 52 when a work such as disinfection is performed, the bubbles that have entered the spring member storage space 59 of the finger contact member 52 are visually confirmed through the bubble observation window 141. it can. Then, when it is confirmed that air has entered the spring member storage space 59 of the finger contact member 52, an operation for removing the air can be performed.

For this reason, the spring member storage space 59 of the finger contact member 52 is used during the work such as cleaning and disinfection of the entire piston portion 26.
Since it is possible to reliably prevent the air from being retained in a state where it has entered, the portion where the air does not come into contact with the disinfectant, such as the wall surface of the finger contact member 52 in which the air bubbles are attached, in the spring member storage space 59. It is possible to completely prevent disinfection work by preventing the occurrence of

Note that at least one bubble observation window 141 may be provided in the finger contact portion 52c on the crown of the finger contact member 52. Further, the bubble observation window 141 does not necessarily have to be provided in the finger contact portion 52c at the crown of the finger contact member 52, and may be provided, for example, in the peripheral wall portion 52d of the finger contact member 52, or the finger contact at the crown of the finger contact member 52. You may provide in both the part 52c and the surrounding wall part 52d.

Further, the bubble observing window 141 does not necessarily have to be arranged such that the surface of the light transmitting member 141b is flush with the peripheral portion of the opening 141a for the bubble observing window 141 in the finger contact member 52. The front surface side of the member 141b is attached to the outside of the finger contact portion 52c in a protruding state, or the translucent member 14 is provided in the opening 141a of the finger contact portion 52c.
By mounting 1b in a depressed state, the finger contact portion 52c
Of the bubble observation window 141 is provided with a convex portion or a concave portion to prevent the operator's fingers from slipping, or the bubble observation window 141
It is also possible to have a lens function by the convex portions or concave portions of the.

Further, as shown in FIG. 15, the entire finger contact member 52 of the air / water switching device 22 of the first embodiment is formed of a transparent material such as transparent glass or transparent plastic, or a semitransparent material. May be.

In this case, each cylinder portion 2 of the air / water supply switching device 22, the suction operation device 23, and the gas supply operation device 24.
When the piston portion 26 removed from the 5, 23c, 24c is washed or sterilized in the cleaning liquid in the washing / disinfecting container 81 or when the entire piston portion 26 is washed or disinfected, a finger contact is performed. Even if air enters the spring member storage space 59 of the member 52, the bubbles that have entered the spring member storage space 59 of the finger rest member 52 can be visually confirmed through the transparent body of the finger rest member 52. And the finger contact member 5
When it is confirmed that the air has entered the second spring member storage space 59, the operation for removing the air can be performed.

Therefore, in this case as well, FIG.
As in the case of the finger contact member 52 of (B), it is possible to reliably prevent the spring member storage space 59 of the finger contact member 52 from being kept in a state where air has entered during the work such as cleaning and disinfection of the entire piston portion 26. Therefore, it is possible to completely prevent the disinfecting work by preventing the occurrence of a portion where the air does not come into contact with the disinfectant, such as a wall surface of the finger contact member 52 in which the air bubbles are attached in the spring member housing space 59. Further, the finger contact member 52
When the whole is made of a transparent material or a semi-transparent material, the blind space in the observation direction is smaller than that of the finger contact member 52 of FIGS. 14A and 14B, and the spring member storage space of the finger contact member 52. The presence or absence of air bubbles inside 59 can be confirmed more reliably.

Further, FIGS. 16 and 17 (A), (B)
9 shows a flow rate adjuster 151 for adjusting the flow rate of the liquid flowing in the conduit such as the cleaning liquid supply tube 77a of the endoscope conduit cleaning device 82 shown in FIG. This flow control device 15
1 is provided with a flow rate adjuster main body 152 formed of a metal material, a plastic material, or the like.

An insertion hole 153 for inserting the cleaning liquid supply tube 77a of the endoscope channel cleaning device 82 shown in FIG. 9 is formed in the main body 152 of the flow rate adjuster. Further, a large diameter portion 152a is formed on one end side (upper end side in FIG. 16) and a small diameter portion 152b is formed on the other end side (lower end side in FIG. 16) of the flow rate adjuster body 152. ing.

Further, the small-diameter portion 15 of the flow rate controller main body 152.
An operation ring (rotating body) 154 formed of a metal material, a plastic material, or the like is rotatably attached to 2b. This operation ring 154 has a flow rate adjusting device main body 15
A through hole 155 is formed in a direction orthogonal to the axial direction of 2. A conduit diameter adjusting pin 156 is inserted into the through hole 155.

The conduit diameter adjusting pin 156 is provided with a small-diameter pin body 156a and a ring-shaped flange portion 156b protruding from the outer peripheral surface of the pin body 156a. Here, the outer dimensions of the flange portion 156b are formed to have substantially the same diameter as the through hole 155 of the flow rate adjuster body 152. The pin body 156a has a flange portion 156.
When b is along the inner peripheral surface of the through hole 155,
It is movable in and out of 5.

Furthermore, inside the through hole 155, the spring member 1 for urging the pin body 156a in the direction of pressing the pin body 156a inwardly.
57 is attached. Here, the retaining ring 15 for retaining the spring member 157 is provided at the outer end of the through hole 155.
8 is screwed.

Further, the small diameter portion 15 of the main body 152 of the flow rate adjuster.
2b has three pin insertion holes 159a into which the tips 156c of the pin bodies 156a of the pipe diameter adjusting pins 156 are inserted.
159b and 159c are formed. These three pin insertion holes 159a, 159b, 159c are arranged along the rotation direction of the operation ring 154. The hole diameter of each pin insertion hole 159a, 159b, 159c is set to be smaller than the flange portion 156b of the conduit diameter adjusting pin 156.

Furthermore, the three pin insertion holes 159a, 15
Of the 9b and 159c, a recessed shallow first flange receiving portion 160 into which the flange portion 156b of the conduit diameter adjusting pin 156 is inserted at the outer end portion of one pin insertion hole 159b, and another pin insertion hole. Second flange receiving portions 161 deeper than the first flange receiving portions 160 are formed at the outer ends of the 159c. Here, the conduit diameter adjusting pin 156
The length of the tip end portion 156c of the pin body 156a is, for example, as shown in FIGS. 16 and 17A, the tip end portion 156c of the conduit diameter adjusting pin 156 has the flange receiving portions 160, 16
1 is set to such a length that the tip end portion 156c of the conduit diameter adjusting pin 156 comes into contact with the cleaning liquid supply tube 77a in the insertion hole 153 while being inserted into the pin insertion hole 159a in which 1 is not formed.

Also, the large diameter portion 15 of the flow rate controller main body 152.
An index 162 indicating the positional relationship between the flow rate adjuster body 152 and the conduit diameter adjusting pin 156 is engraved or printed on at least one location on the outer peripheral surface of 2a. The index 162 may be the model name of the endoscope 1.

Next, the operation of the above configuration will be described.
First, as shown in FIG. 17A, the conduit diameter adjusting pin 156
When the tip end portion 156c of the above is inserted into the pin insertion hole 159a, the tip end portion 156c of the conduit diameter adjusting pin 156 is held in contact with the cleaning liquid supply tube 77a inside the insertion hole 153. In this state, the internal pipe line of the cleaning liquid supply tube 77a in the insertion hole 153 is kept at the natural pipe line diameter.

When changing the pipe diameter of the internal pipe of the cleaning liquid supply tube 77a, first, the pipe diameter adjusting pin 156 is pulled outward to move the tip portion 156c of the pin body 156a to the flow rate adjusting device main body 152. Pin insertion hole 1
Pull out from 59a. At this time, the pipe diameter adjusting pin 156
The tip portion 156c of the pin body 156a is pulled out to the outside of the small diameter portion 152b of the flow rate adjuster body 152.

In this state, the flow rate control device main body 152
The operation ring 154 is rotated with respect to this. At this time, the rotational position of the operation ring 154 is positioned at a desired conduit diameter adjusting position by aligning the conduit diameter adjusting pin 156 with the index 162 of the large diameter portion 152a of the flow rate adjuster body 152.

Further, by releasing the conduit diameter adjusting pin 156 at the rotational position of the operation ring 154, the spring member 1 is released.
The spring force of 57 pushes the pin body 156a inward. At this time, the tip portion 1 of the pin body 156a
As shown in FIG. 17B, for example, 56c is inserted into the pin insertion hole 159b of the small diameter portion 152b of the flow rate adjuster body 152, and the flange portion 156b of this pin body 156a is the first flange receiving portion 160. Inserted in. Thus, the flange portion 156b of the pin body 156a is the first
The distal end portion 156c of the pin body 156a is projected to the inner side of the insertion hole 153 in accordance with the operation of being inserted into the flange receiving portion 160 of the endoscope main body 156a. The cleaning liquid supply tube 77a is locally crushed, the diameter of the internal conduit of the cleaning liquid supply tube 77a is reduced from the natural state, and the conduit resistance of the cleaning liquid supply tube 77a is changed to a desired value.

The tip portion 156c of the pin body 156a is
Is inserted into the pin insertion hole 159c of the small diameter portion 152b of the flow rate adjuster body 152, and the pin body 156
When the flange portion 156b of a is inserted into the second flange receiving portion 161, the tip portion 156c of the pin body 156a.
Is inserted into the pin insertion hole 159b of the small diameter portion 152b of the flow rate adjuster main body 152, and the flange portion 156b of the pin main body 156a is inserted into the first flange receiving portion 160. The amount of protrusion when the tip portion 156c is protruded to the inner side of the insertion hole 153 is large, so that the cleaning liquid supply tube of the endoscope duct cleaning device 82 is crushed by the protruding portion of the tip portion 156c of the pin body 156a. The deformation amount of 77a increases. Therefore, in this case, the pipe diameter of the inner pipe of the cleaning liquid supply tube 77a is further reduced, and the cleaning liquid supply tube 77a is
The conduit resistance of is changed to a larger state.

Therefore, the following effects can be obtained with the above structure. That is, when adjusting the diameter of the inner pipe of the cleaning liquid supply tube 77a, the tip 156c of the pin body 156a of the pipe diameter adjusting pin 156 is projected to the inside of the insertion hole 153, and the tip 156c of the pin body 156a.
Since the cleaning liquid supply tube 77a of the endoscope conduit cleaning device 82 is locally crushed by the protruding portion of the endoscope pipe cleaning device 82 to reduce the diameter of the internal conduit of the cleaning liquid supply tube 77a, the internal pipe of the cleaning liquid supply tube 77a is reduced. There is no complicated shape in the part of the passage where the liquid flows, and the shape can be changed smoothly. Therefore, the endoscope duct cleaning device 82
Cleaning liquid supply tube 77 without impairing the cleaning performance of itself
The pipe diameter of the internal pipe of a can be adjusted.

Although the flow rate adjuster 151 is mounted on one of the cleaning liquid supply tubes 77a of the endoscope duct cleaning device 82, the other cleaning liquid supply tube 77b is shown.
Similarly, the flow rate adjuster 151 may be provided to adjust the conduit resistance to obtain an optimum balance.

Further, FIGS. 18 and 19 (A), (B)
Shows a first modification of the flow rate adjuster 151 of FIG. In this modified example, the small-diameter portion 1 of the flow rate controller main body 152.
A cam groove 171 shown in FIG. 19A is provided on the outer peripheral surface of 52b. The cam groove 171 is formed in a state of being inclined with respect to the circumferential direction of the outer peripheral surface of the small diameter portion 152b. Further, a plurality of positioning recesses 172 for positioning are formed at the lower edge of the cam groove 171.

Further, the small-diameter portion 15 of the flow controller main body 152.
A pin 173 that restricts the rotational position between the flow rate adjuster body 152 and the operation ring 154 is fixed to the outer peripheral surface of the operation ring 154 that is rotatably mounted on 2b. The inner end of the pin 173 is provided so as to project inward of the operation ring 154, and is engaged with the cam groove 171 of the flow rate adjuster body 152 so as to be movable along the cam groove 171.

A ring-shaped receiving portion 174 bent inward is provided at the lower end of the operation ring 154 so as to project therefrom. The inner diameter of the ring-shaped receiving portion 174 is set to be substantially the same as the diameter of the insertion hole 153 of the flow rate adjuster body 152.

Further, a ring-shaped elastic member 175 such as rubber is interposed between the lower end of the flow rate control device main body 152 and the ring-shaped receiving portion 174 of the operation ring 154. Then, due to the elastic force of the elastic member 175, the pin 173 causes the locking recess 17 for positioning any one of the cam grooves 210a.
It is locked to 2. The inner diameter of the elastic member 175 is set to be substantially the same as the diameter of the insertion hole 153 of the flow rate adjuster body 152 when the elastic member 175 is held in a natural state (non-compressed state) as shown in FIG. Has been done. Then, the cleaning liquid supply tube 7 of the endoscope conduit cleaning device 82
The conduits such as 7a are through holes 153 of the flow rate adjusting device main body 152,
Central opening 175a of elastic member 175 and operation ring 15
The ring-shaped receiving portion 174 of No. 4 is inserted into the center opening 174a.

Further, the large diameter portion 15 of the flow rate controller main body 152.
On the outer peripheral surface of 2a, the rotational positional relationship between the flow rate adjuster body 152 and the operation ring 154, that is, the elastic member 175.
An index 176 indicating the crushed state is stamped or printed.

Next, the operation of the above configuration will be described.
First, when the inner end of the pin 173 is engaged with the locking recess 172 at the upper end position of the cam groove 171, the elastic member 175 is provided.
18, is held in a natural state (non-compressed state), and the central opening 175a of this elastic member 175 is held in a state of having substantially the same diameter as the insertion hole 153 of the flow rate adjuster body 152. In this state, the internal pipe line of the cleaning liquid supply tube 77a in the central opening 175a of the elastic member 175 is maintained at the natural pipe line diameter.

When changing the conduit diameter of the internal conduit of the cleaning liquid supply tube 77a, first, the elastic member 175 is used.
18, the operation ring 154 is pushed upward in FIG. 18, and the inner end of the pin 173 is pulled out of the locking recess 172 to release the engagement between the pin 173 and the locking recess 172. . In this state, the operation ring 154 is rotated with respect to the flow rate adjuster body 152. At this time, the pin 173
The indicator 176 of the large diameter portion 152a of the flow rate adjusting device main body 152
The rotational position of the operation ring 154 is positioned at a desired conduit diameter adjusting position by adjusting the position.

When the operating ring 154 rotates, the pin 173 moves along the cam groove 171 and the entire operating ring 154 moves upward in FIG. for that reason,
The elastic member 175 between the lower end of the flow rate adjuster body 152 and the ring-shaped receiving portion 174 of the operation ring 154 is crushed. At this time, since the elastic member 175 is restricted from being deformed outward by the operation ring 154, the elastic member 175 shown in FIG.
As shown in (B), it is deformed so as to project inward. The inwardly projecting portion of the elastic member 175 causes the cleaning liquid supply tube 7 of the endoscope channel cleaning device 82.
7a is locally crushed, and the diameter of the internal conduit of the cleaning liquid supply tube 77a is reduced from the natural state, and the conduit resistance of the cleaning liquid supply tube 77a is changed to a desired value.

Therefore, even in the case of the above configuration, FIG.
In addition to the same effect as the flow rate adjusting device 151 of FIG. 16, the present modification can reduce the number of constituent members compared to the flow rate adjusting device 151 of FIG.

20 (A) to 20 (C) show a second modification of the flow rate adjuster. The flow rate adjuster 181 of this modified example is provided with a substantially box-shaped flow rate adjuster body 182 formed of a metal material, a plastic material, or the like. A cleaning liquid supply tube 77 for the suction conduit of the endoscope conduit cleaning device 82 shown in FIG.
Two insertion holes 184a and 184b are formed to respectively insert the cleaning liquid supply tube 77b for a and the air / water supply conduit.

Further, a conduit diameter adjusting member 185 is disposed inside the flow rate adjuster body 182 above the two insertion holes 184a, 184b. This conduit diameter adjusting member 1
Reference numeral 85 denotes a flow rate adjusting device main body 182 as shown in FIG.
The adjustment member holding member 186 fixed by adhesion or the like is held so as to be movable in the left-right direction in FIG.

Further, on the lower surface of the conduit diameter adjusting member 185, two tube pressing members 187 formed in a triangular shape or the like are provided.
a and 187b are fixed. Further, inside the flow rate adjuster main body 182, substantially semicircular tube receiving portions 188 for receiving the forces acting on the tubes 77a and 77b are provided below the two insertion holes 184a and 184b, respectively.

Further, the rotation operating member 18 for moving and operating the conduit diameter adjusting member 185 is provided at one side of the flow rate adjusting device main body 182.
9 is rotatably supported. This rotation operation member 18
An operation knob 190 that extends to the outside of the flow rate adjuster body 182 is provided at one end of 9.

Further, a cam groove 191 and a ratchet groove 192 are provided on the outer peripheral surface of the rotation operating member 189. Here, the conduit diameter adjusting member 185 is provided in the cam groove 191.
The distal end of the pin 193 fixed to one end of is movably engaged. Further, the ratchet groove 192 is engaged with the tip portion of the ratchet pawl 194 fixed to the flow rate adjuster body 182.

The outer surface of the flow rate controller main body 182 and the operation knob 190 of the rotary operation member 189 are printed or engraved with an index indicating the collapsed state of the conduits of the tubes 77a and 77b.

Next, the operation of the above configuration will be described.
First, the two insertion holes 184a of the flow rate controller main body 182,
Cleaning liquid supply tube 77a for suction line and cleaning liquid supply tube 77 for air supply / water supply line which are inserted through 184b
The index of the operating knob 190 is adjusted to the index on the outer surface side of the flow rate adjuster main body 182 so that the internal conduit of b has an appropriate conduit resistance.

The rotation of the rotation operating member 189 at this time causes the pin 193 to move in the left-right direction along the cam groove 191 in FIG. 20 (A). At this time, the pipe diameter adjusting member 185 moves together with the pin 193. for that reason,
Along with the movement of the conduit diameter adjusting member 185, the two tube pressing members 187a, 187b crush the cleaning liquid supply tube 77a for the suction conduit and the cleaning liquid supply tube member 77b for the air / water conduit, respectively, to crush these two tubes. The diameters of the pipes 77a and 77b are adjusted.

Therefore, even in the case of the above-mentioned structure, the two tube pressing members 187a are used when adjusting the diameters of the inner lines of the cleaning liquid supply tube 77a for the suction conduit and the cleaning liquid supply tube 77b for the air / water supply conduit. , 187b, the cleaning liquid supply tube 77a for the suction pipe line and the cleaning liquid supply tube 77b for the air / water supply pipe line are crushed to adjust the diameters of the two tubes 77a, 77b. Cleaning liquid supply tube 77a for a pipe, cleaning liquid supply tube 77 for an air / water supply pipe
There is no complicated shape in the part where the liquid in the internal duct of b flows,
In addition to the smooth shape change, the same effects as those of the flow rate adjuster 151 of FIG. 16 can be obtained. Of course, in this modification, the diameters of the two tubes 77a and 77b are adjusted at the same time, which is optimal. It is easy to obtain a good pipeline balance.

FIGS. 21A and 21B show a third modification of the flow rate adjuster. This is detachably connected between the suction inlet port 78a and the air / water inlet port 78b of the connector device 78 of the endoscope channel cleaning device 82 shown in FIG. 9 and the Y-shaped branch pipe 83. The cleaning liquid supply tube 77a for the suction pipe line and the cleaning liquid supply tube 77b for the air / water supply pipe line are provided with projections 201a and 201b serving as orifices respectively in the internal pipe lines.

The protrusions 201a and 201b are formed by plastically deforming a part of each of the tubes 77a and 77b. In addition, each tube 77a,
You may tie a part of 77b and adjust it to a required orifice diameter.

Further, an index member 202 for displaying the conduit resistance of each tube 77a, 77b is provided on the outer peripheral surface of each tube 77a, 77b. The index member 202 is displayed with a symbol, a code, a numerical value, or the like indicating the conduit resistance. It should be noted that a plurality of types of tubes having different inner diameters of the protrusions 201a and 201b are prepared in advance.

Therefore, in the case of the above-described structure, the tubes 77a and 77b to be used are properly selected according to the cleaning method, and are appropriately exchanged so that the suction injection mouthpiece of the connector device 78 of the endoscope channel cleaning device 82 is selected. Since it is possible to connect between the Y-shaped branch pipe 83 and the air supply / water supply injection cap 78b, it is possible to simplify the configuration of the entire apparatus.

22 (A) and 22 (B) show a first modified example of an endoscope inserted in a living body or the like. FIG. 22 (A) shows the distal end forming portion 213 of the insertion portion 212 of the side view type endoscope 211. This tip component 213
A cover 215 made of synthetic resin is fitted to the outer peripheral surface of the body 214 of the leading end component made of metal.

Further, the tip forming portion 213 is provided with a storage chamber 216 having an opening 216a formed in its upper surface. A treatment instrument inductor 217 is stored in the storage chamber 216. The proximal end of the treatment instrument guide 217 is pivotally attached by a pivot shaft 218 provided at the bottom of the storage chamber 216.

Further, the treatment instrument guide 217 is formed so that the pivoting distal end side is wide when viewed from the side and is so-called substantially fan-shaped. A guide groove 219 curved in an arc shape is formed on the upper surface of the treatment instrument guide 217 to guide the treatment instrument.

Further, a mounting hole 220 is formed in the distal end portion of the treatment instrument guide 217. This mounting hole 2
A distal end of an operation wire 222 is attached to the device 20 via a mounting tool 221. The operation wire 222 is led out from one side surface portion of the treatment instrument guide 217, then turned 90 degrees rearward, and guided toward the wire guide hole 223 located at the upper end of the storage chamber 216 at the proximal end side. , Insertion part 21
2 is guided to the operation portion of the endoscope 211 through a guide of a wire guide tube 224 disposed inside the second tube 2 and connected to a raising operation mechanism. That is, the operation wire 222 led out from one side surface portion of the treatment instrument guide 217 travels upward while drawing an arc, and is guided to the wire guide hole 223 in the upper portion on the proximal end side of the storage chamber 216.

Then, the treatment instrument is stored in the storage chamber 216 through the treatment instrument insertion channel 225 provided in the insertion portion 212.
It is guided inside, guided along the guide groove 219 of the treatment instrument guide 217, and led out to the outside from the opening 216a of the storage chamber 216. In this state, the operation wire 222 is pushed and pulled by the raising operation mechanism in the operation portion to rotate the treatment instrument guide 217 around the pivot shaft 218 to change the derivation direction of the treatment instrument. it can.

In this modification, the wire guide hole 22 is used.
The tip cover 21 with respect to the operation wire 222 guided to 3
5 is a position where the inner wall of the housing 5 approaches the inner wall of the distal end cover 215, and the operation wire 222 is the position where the operation wire 222 most easily interferes with the inner wall of the distal end cover 215. 226 is provided.

It should be noted that the distal end forming section 213 has a storage chamber 21.
A light guide (not shown) is arranged on the side of 6 and the upper surface of the tip forming portion 213 is shown in FIG.
As shown in FIG. 7, an observation window 228 provided with an illumination window 227 for irradiating illumination light and an image pickup unit including a CCD is arranged next to the upper opening 216a of the storage chamber 216.

A cleaning tool mounting opening 229 is formed on the front surface of the tip forming portion 213 to connect the storage chamber 216 and the outside. Here, the cleaning tool 2 such as a cleaning solution sending means or a cleaning solution absorbing means that is inserted into the cleaning tool mounting opening 229 of the distal end forming section 213 during the cleaning operation of the endoscope 211.
A tapered taper surface 231 a is formed on the outer peripheral surface of the connection portion 231 provided in the unit 30. The cleaning tool 2 is attached to the inner peripheral surface of the cleaning tool insertion hole of the cleaning tool mounting opening 229.
A tapered joint surface corresponding to the tapered surface 231a of the connecting portion 231 of 30 is formed.

Next, a method of cleaning the tip forming portion 213 of the side-view endoscope 211 having the above-mentioned structure will be described. First, the connecting portion 2 of the cleaning tool 230, such as a cleaning liquid feeding means or a cleaning liquid suction means, while immersing the tip forming part 213 in the cleaning liquid.
31 is inserted into the cleaning tool mounting opening 229. At this time,
Since the outer surface of the connecting portion 231 and the inner peripheral surface of the cleaning tool insertion hole of the cleaning tool mounting opening 229 have substantially the same taper, they are firmly connected to each other.

Further, after connecting the connecting portion 231 of the cleaning tool 230 to the cleaning tool mounting opening 229, the liquid is sent or sucked into the storage chamber 216 through the connecting portion 231. At this time, since the volume of the storage chamber 216 is relatively small, if the liquid is supplied or absorbed at a sufficient flow rate, the cleaning liquid flows at a high speed and passes through the storage chamber 216. At that time, a large turbulent flow is formed in the storage chamber 216, and the dirt attached to the detailed structure portion of the storage chamber 216 is also removed.

Therefore, the following effects are obtained with the above-mentioned structure. That is, in a state in which the connecting portion 231 of the cleaning tool 230 such as the cleaning liquid feeding means or the cleaning liquid absorbing means is connected to the cleaning tool mounting opening 229 of the tip forming portion 213, the liquid feeding from the connecting portion 231 of the cleaning tool 230 is performed. Alternatively, by absorbing the liquid, the dirt inside the storage chamber 216 can be easily removed. In addition, in this modification, the tip forming portion 213 is used during cleaning.
There is no need to attach or detach some of the parts, and the labor of the operator is reduced.

Furthermore, since the outer surface of the connecting portion 231 and the inner peripheral surface of the cleaning tool insertion hole of the cleaning tool mounting opening 229 have substantially the same taper, they are firmly connected to each other, so that the connection is made. The portion 231 can be made difficult to come off from the cleaning tool attachment opening 229. Therefore, when the cleaning liquid is fed or sucked, the work is not interrupted by the disconnection of the connection portion 231.

Further, when the cleaning tool mounting opening 229 of the distal end forming portion 213 is formed as a hole, the processing is simple, so that the cost of the entire side-view endoscope 211 can be reduced. Since the method of attaching / connecting the cleaning tool to / from the tip forming portion 213 depends on the fitting of the taper, the structure of the cleaning tool mounting opening 229 having a notch has a simpler structure than the case where the cleaning tool mounting opening 229 has a hole. 231 and the opening 229 themselves have good cleaning properties.

In this modification, the cleaning tool mounting opening 22 is provided.
Although 9 is a hole, a cutout may be provided in place of the hole for communicating the storage chamber 216 with the outside. Also, FIG.
2 (A) and 2 (B), the cleaning tool mounting opening 229 is provided at the tip of the resin cover 215, but it may be provided anywhere on the resin cover 215, and a plurality of cleaning tool mounting openings 229 may be provided. Is also possible.

23A and 23B show a second modified example of the endoscope. This is because the luer lock type connection portion 241A is provided in the connection portion of the cleaning tool 241 such as the cleaning liquid sending means or the cleaning liquid absorbing means shown in FIG. 23B with the endoscope 211, and the first modification example. A connecting portion 242 that can be connected to the luer lock type connecting portion 241A of the cleaning tool 241 is provided on the front surface of the distal end forming portion 213 of the side-view endoscope 211 having substantially the same structure as the above.

Here, the luer lock type connection part 241A of the cleaning tool 241 is a hollow cylinder injection port 243, and a connection cylinder 244 which is a hollow cylinder having an inner diameter larger than the outer diameter of the injection port 243. It is configured by a screw hole portion (not shown) provided on the inner peripheral surface of the connection cylinder 244.

In addition, a concave portion 245 formed on the front surface of the resin cover 215 is formed in the connecting portion 242 of the tip forming portion 213.
Is provided. The inner bottom portion 246 of the recessed portion 245 is provided with an injection port portion 246a between the central storage chamber 216 and the outside.

Further, the base end portion of the support cylinder 247 is bonded to the inner bottom portion 246 of the recessed portion 245 in a state of communicating with the injection port portion 246a. A ring-shaped flange portion 248 is projectingly provided at the tip of the support cylinder 247. On the outer peripheral surface of the flange portion 248, a male screw portion that can be screwed into the screw hole portion of the connection cylinder 244 of the luer lock type connection portion 241A of the cleaning tool 241 is formed.

Therefore, in the above-mentioned structure, the luer lock type connecting portion 2 is connected to the connecting portion of the cleaning tool 241 such as the cleaning liquid sending means or the cleaning liquid suction means with the endoscope 211.
41A and a connecting portion 242 that can be connected to the luer lock type connecting portion 241A of the cleaning tool 241 are provided on the front surface of the distal end forming portion 213 of the side view endoscope 211.
41 and the endoscope 211, the screw between the screw hole portion of the connection cylinder 244 in the luer lock type connection portion 241A of the cleaning tool 241 and the male screw portion of the flange portion 248 in the connection portion 242 of the endoscope 211. Since the connection is made via the joint, the cleaning tool 241 and the endoscope 211 can be connected more reliably. Therefore, the side-view endoscope 211
Since it is possible to make the cleaning tool 241 difficult to come off from the distal end constituent part 213, the work is not interrupted by the connection part 241A coming off when feeding or absorbing the cleaning liquid.

Further, the effect of cleaning the housing portion 216 of the tip forming portion 213 and the effect of not having to remove and attach a part of the tip forming portion 213 are the same as those of the first modification. Further, in the present modification, since the cleaning tool 241 and the endoscope 211 are connected to each other via the screwing portion, the cleaning tool 2
The structure of the connecting portion between 41 and the endoscope 211 is simple, and more reliable connection can be achieved as compared with the first modification.

23A and 23B, the connecting portion 2
The concave portion 245 of 42 is provided at the tip portion of the resin cover 215, but it may be provided anywhere on the resin cover 215, or it is possible to provide a plurality thereof.

24A and 24B show a third modification of the endoscope. This is because a male screw-like connecting portion 252 is provided at a connecting portion of the cleaning tool 251 such as the cleaning liquid sending means or the cleaning liquid absorbing means shown in FIG. 24B with the endoscope 211, and the first modification example. The side view type endoscope 211 having substantially the same configuration as that of the resin cover 215 is provided with a screw hole portion 253 that can be screwed into the male screw-like connection portion 252 of the cleaning tool 251.

Here, the resin cover 215 of the tip forming portion 213 is provided with a cleaning tool mounting opening 254 which is a hole that communicates between the storage chamber 216 and the outside, and this cleaning tool mounting opening 254. A female screw-shaped screw portion is formed on the inner peripheral surface of the, and a screw hole portion 253 that can be screwed into the male screw-shaped connection portion 252 of the cleaning tool 251 is formed by this female screw-shaped screw portion.

24 (A) and 24 (B), the cleaning tool attachment opening 254 is provided at the tip of the resin cover 215, but it may be provided anywhere on the resin cover 215. Well, it is also possible to provide a plurality.

Therefore, in the above-described structure, a male screw-like connecting portion 252 is provided at the connecting portion of the cleaning tool 251 such as the cleaning liquid feeding means or the cleaning liquid suction means with the endoscope 211.
And the distal end constituent portion 2 of the side-view endoscope 211.
A screw hole portion 253 that can be screwed into the male screw-shaped connection portion 252 of the cleaning tool 251 is provided on the front surface of the cleaning tool 251. When the cleaning tool 241 and the endoscope 211 are connected, the male thread-shaped connection portion 252 of the cleaning tool 251 is provided. Since the endoscope 211 is connected via the screwed portion between the screw hole portion 253 and the screw hole portion 253, the cleaning tool 251 and the endoscope 21 are connected.
It is possible to connect more reliably to the first and second parts. Therefore, like the second modified example, the cleaning tool 251 can be made difficult to come off from the distal end forming portion 213 of the side-view endoscope 211, and therefore, when the cleaning liquid is delivered or absorbed, the connecting portion 25
There is no interruption of work due to the removal of 2. Furthermore, in this modification, in particular, the number of thread engagement threads of the threaded portion between the male screw-shaped connection portion 252 of the cleaning tool 251 and the screw hole portion 253 of the endoscope 211 can be freely designed to some extent. Strength can be adjusted.

Further, FIGS. 25A and 25B show a fourth modified example of the endoscope. In this modification, FIG.
A cylindrical connecting portion 262 is provided at a connecting portion of the cleaning tool 261 such as the cleaning liquid sending means or the cleaning liquid absorbing means shown in (B) with the endoscope 211.

Furthermore, the resin cover 21 of the distal end forming portion 213 of the side-view endoscope 211 having substantially the same structure as that of the first modification.
The storage chamber 216 communicates with the outside on the front surface of the cleaning tool 2
A cleaning tool insertion hole 263 into which the connecting portion 262 of 61 can be inserted is formed, and a ring-shaped groove 264 is formed on the inner peripheral surface of the cleaning tool insertion hole 263.
A ring-shaped elastic member 265 is attached to.

The inner diameter of the elastic member 265 is the cleaning tool 2
The diameter is set to be smaller than the outer diameter dimension of the cylindrical connecting portion 262 of 61. Then, when the cylindrical connection portion 262 of the cleaning tool 261 is inserted and connected to the cleaning tool insertion hole 263, the elastic member 265 is elastically deformed and pressed against the connection portion 262.

Therefore, in the structure described above, a cylindrical connecting portion 262 is provided at the connecting portion of the cleaning tool 261 such as the cleaning liquid sending means or the cleaning liquid suction means with the endoscope 211, and the side view Tip 21 of the endoscope 211
Since the cleaning tool insertion hole 263 is formed on the front surface of the resin cover 215 of No. 3, and the ring-shaped elastic member 265 is attached to the ring-shaped groove 264 of this cleaning tool insertion hole 263, the cleaning tool 26
When the first connection part 262 is inserted and connected to the cleaning tool insertion hole 263, the elastic member 265 is elastically deformed to connect the connection part 262.
Can be pressed against. Therefore, the connecting portion 262 of the cleaning tool 261 and the ring-shaped groove 264 of the cleaning tool insertion hole 263 are provided.
Of the cleaning tool 261 by the frictional force between the elastic member 265 of
Since the endoscope and the endoscope 211 can be reliably connected to each other, it is possible to make it difficult for the cleaning tool 261 to come off from the tip forming portion 213 of the side-view endoscope 211.

Further, the effect of cleaning the housing portion 216 of the tip forming portion 213 and the effect of not having to remove and attach a part of the tip forming portion 213 are the same as those of the first modification. Further, in this modification, in particular, since the connection portion 262 of the cleaning tool 261 and the inner peripheral surface of the cleaning tool insertion hole 263 are in contact with each other via the soft elastic member 265,
The wear between the connecting portion 262 of the cleaning tool 261 and the inner peripheral surface of the cleaning tool insertion hole 263 is reduced, and it can be used for a long period of time.

In this modification, the ring-shaped elastic member 2 is used.
Although 65 is used, it may have any shape as long as it presses the cylindrical connecting portion 262 of the cleaning tool 261 to generate a frictional force. Further, the portion to which the elastic member 265 is attached is not limited to the inner peripheral surface of the cleaning tool insertion hole 263, and may be provided on the cylindrical connecting portion 262 of the cleaning tool 261, or may be provided on both of them. Further, the number of elastic members 265 is not limited to one, and a plurality of elastic members 265 may be provided.

Here, when the elastic member 265 is provided in the connecting portion 262 of the cleaning tool 261, replacement of the elastic member 265 is easy. In addition, the cleaning tool insertion hole 2 of the tip forming portion 213
When the elastic member 265 is provided on 63, the elastic member 265
Since it does not appear outside, it is excellent in appearance.

Further, in this modification, the resin cover 215 is used.
Although the cleaning tool insertion hole 263 is a hole, it may be provided with a notch for communicating the storage chamber 216 with the outside instead of the hole. Further, the cleaning tool insertion hole 263 is provided in the resin cover 21.
5 is provided at the tip of the resin cover 2
It may be provided anywhere as long as it is above 15, and it is also possible to provide a plurality thereof.

26 (A) to 26 (C) show a fifth modified example of the endoscope. In this modification, FIG.
A cylindrical connecting portion 272 is provided at a connecting portion of the cleaning tool 271 such as the cleaning liquid sending means or the cleaning liquid absorbing means shown in (B) with the endoscope 211. A circumferential positioning key 273 is provided on the outer peripheral surface of the distal end portion of the cylindrical connection portion 272 so as to project therefrom.

Further, the resin cover 21 of the distal end forming portion 213 of the side-view endoscope 211 having substantially the same structure as that of the first modification.
The storage chamber 216 communicates with the outside on the front surface of the cleaning tool 2
A cleaning tool insertion hole 274 into which the connecting portion 272 of 71 is inserted is formed, and a key groove 275 corresponding to the key 273 of the cleaning tool 271 is formed on the inner peripheral surface of the cleaning tool insertion hole 274.

FIG. 26 shows the inner end of the key groove 275.
As shown in (C), a locking portion 275a bent in a direction orthogonal to the axial direction of the cleaning tool insertion hole 274 is formed. When the cylindrical connecting portion 272 of the cleaning tool 271 is inserted into the cleaning tool insertion hole 274, the key 273 of the cleaning tool 271 is inserted into the hole while being guided by the key groove 275 of the cleaning tool insertion hole 274. As shown by the arrow in FIG. 26 (C), the key 273 is the locking portion 275a at the back of the key groove 275.
The key 273 is prevented from being easily removed by being inserted and locked therein.

Therefore, in the structure described above, a cylindrical connecting portion is provided at the connecting portion of the cleaning tool 271 such as the cleaning liquid feeding means or the cleaning liquid suction means with the endoscope 211, and the cylindrical connecting portion 272 is A key 273 is provided on the outer peripheral surface of the tip portion, and the resin cover 21 of the tip forming portion 213 is provided.
The cleaning tool 271 is attached to the inner peripheral surface of the cleaning tool insertion hole 274 on the front surface of
Key 273 and the key groove 275 corresponding to the key 273 are formed, and when the cleaning tool 271 and the endoscope 211 are connected, the key 273 of the cylindrical connection portion 272 and the key groove 275 of the resin cover 215 are coupled. Therefore, the cleaning tool 271 and the endoscope 211 can be reliably connected to each other, and the cleaning tool 271 can be made unlikely to come off from the distal end configuration portion 213 of the side-view endoscope 211.

Further, the effect of cleaning the housing portion 216 of the tip forming portion 213 and the effect of not having to remove and attach a part of the tip forming portion 213 are the same as those of the first modification. Furthermore, in this modification, since the method of connecting the cleaning tool 271 and the endoscope 211 is the key 273, the structure is simple, and the durability is high even when it is frequently attached and detached.

The key 273 is provided in the cleaning tool insertion hole 274 of the resin cover 215, and the key groove 275 is provided in the cleaning tool 27.
It may be provided in one cylindrical connection portion 272. In this case, the key groove 275, which is difficult to clean, is exposed on the outer surface of the cylindrical connecting portion 272 of the cleaning tool 271, so that the key groove 275 is formed.
It leads to improvement of the cleaning performance.

Furthermore, the cylindrical connecting portion 27 of the cleaning tool 271
2 is provided with a key 273 and the cleaning tool insertion hole 274 of the resin cover 215 of the distal end forming portion 213 is provided with a key groove 275, there is no protrusion on the connection portion 272. There is no risk of damaging the lenses provided on the tip forming portion 213.

Further, in this modification, the cleaning tool insertion hole 274 of the resin cover 215 is a hole, but instead of the hole, a notch for communicating the storage chamber 216 with the outside may be provided. In addition, the cleaning tool insertion hole 274 has a resin cover 215.
It is provided at the tip of the resin cover 21.
5 may be provided anywhere, and a plurality may be provided.

27A and 27B show a sixth modified example of the endoscope. In this modified example, the distal end configuration portion 2 of the side-view endoscope 211 having substantially the same configuration as that of the first modified example.
A cleaning tool insertion hole 281 that connects the storage chamber 216 to the outside is formed on the front surface of the resin cover 215 of 13.
Further, a male screw portion 282 for attaching a cleaning tool is formed on the outer peripheral surface of the resin cover 215. This male thread 2
Reference numeral 82 is arranged at a rear position (hand side) with respect to the upper surface opening 216a of the resin cover 215.

Further, a cleaning tool 283 such as a cleaning liquid feeding means or a cleaning liquid absorbing means connected to the side-view endoscope 211.
A large diameter cylindrical cover member 284 that covers the entire resin cover 215 of the distal end forming portion 213 of the endoscope 211 is provided at the connecting portion with the endoscope 211. The inner bottom portion of the cover member 284 is provided with the endoscope 2 at a substantially axial center position.
A cylindrical connecting portion 285 that is inserted into the cleaning tool insertion hole 281 of FIG.

[0218] Here, the cover member 284 of the cleaning tool 283.
The male screw portion 28 of the resin cover 215 is provided on the inner peripheral surface of the tip of the
A screw hole portion 286 that is screwed into 2 is formed. Further, a water drain opening 287 is formed on the outer peripheral surface of the cover member 284 at a position corresponding to the upper surface opening 216a of the distal end forming portion 213 of the endoscope 211. It should be noted that the shape and the number of the water drain opening 287 are not particularly limited.

When the cleaning tool 283 is connected to the distal end forming portion 213 of the endoscope 211, the cylindrical connecting portion 285 of the cleaning tool 283 has the cleaning tool insertion hole 281 of the endoscope 211.
The cover member 28 of the cleaning tool 283 is inserted in the inside.
The screw hole portion 286 of No. 4 is the male screw portion 2 of the resin cover 215.
It is adapted to be screwed to 82.

Therefore, in the above-described structure, the cleaning member 283 such as the cleaning liquid sending means or the cleaning liquid suction means is provided with the cover member 284 for covering the entire resin cover 215 of the distal end forming portion 213 of the endoscope 211. This cover member 284
A cylindrical connecting portion 285 to be inserted into the cleaning tool insertion hole 281 of the endoscope 211 is projectingly provided on the inner bottom portion of the cover 211, and the male screw portion 282 of the resin cover 215 is screwed on the inner peripheral surface of the distal end portion of the cover member 284. A screw hole portion 286 is formed so that the cleaning tool 283 can be connected to the endoscope 211 when the cleaning tool 283 is connected to the endoscope 211.
The cylindrical connecting portion 285 of the cleaning tool insertion hole 2 of the endoscope 211.
Since the screw hole portion 286 of the cover member 284 of the cleaning tool 283 is screwed into the male screw portion 282 of the resin cover 215 in the state where the cleaning tool 283 is inserted into the cleaning tool 283, the cleaning tool 283 is provided between the cleaning tool 283 and the endoscope 211. Can be reliably connected. Therefore, the cleaning tool 283 can be made difficult to come off from the distal end forming portion 213 of the side-view endoscope 211, so that the cylindrical connecting portion 285 of the cleaning tool 283 is detached when the cleaning solution is fed or absorbed. Work will not be interrupted.

Further, in this modification, FIGS. 24A and 24B are used.
In addition to the same effects as the third modification shown in FIG.
Since it is not necessary to provide a screw hole portion in a narrow space like the cleaning tool insertion hole 281 of No. 1, processing becomes easy, leading to cost reduction.

Although the cleaning tool insertion hole 281 of the endoscope 211 is a hole in this modification, a notch may be provided in place of the hole for communicating the storage chamber 216 with the outside.
Further, the cleaning tool insertion hole 281 is provided at the tip end portion of the resin cover 215, but it may be provided anywhere on the resin cover 215, or a plurality thereof can be provided.

28A and 28B show a seventh modified example of the endoscope. This is shown in FIG.
(B) Connection between the side-viewing endoscope 211 of the sixth modified example and a cleaning tool 283 such as a cleaning solution sending means or a cleaning solution absorbing means connected to the side-viewing endoscope 211. A part of the structure of the department is changed. That is, in the sixth modified example, instead of providing the male thread portion 282 for attaching the cleaning tool on the outer peripheral surface of the resin cover 215 of the endoscope 211, in this modified example, the outer periphery of the resin cover 215 of the endoscope 211 is replaced. A circumferential positioning key 291 is projected on the surface.

Furthermore, the cleaning tool 28 in the sixth modified example.
The screw hole 28 is formed on the inner peripheral surface of the tip of the cover member 284 of No. 3
Instead of 6, a key groove 292 corresponding to the key 291 of the resin cover 215 is formed. A locking portion 292a bent in a direction orthogonal to the axial direction of the tip forming portion 213 is formed at the inner end portion of the key groove 292. And
When the tip forming portion 213 of the endoscope 211 is inserted into the cover member 284 of the cleaning tool 283, the key 291 of the resin cover 215 is guided by the key groove 292 of the cover member 284 of the cleaning tool 283 and is inserted into the hole. Inserted, key 291
The key 291 is prevented from being easily removed by being inserted into and locked in the locking portion 292a at the back of the key groove 292.

Therefore, in the above-mentioned structure, a circumferential positioning key 291 is provided on the outer peripheral surface of the resin cover 215 of the endoscope 211, and the cleaning tool 283 is provided.
Of the resin cover 21 on the inner peripheral surface of the tip of the cover member 284 of
The key groove 292 corresponding to the No. 5 key 291 is formed, and when the cleaning tool 283 and the endoscope 211 are connected, the key 291 of the resin cover 215 and the key groove 292 of the cover member 284 of the cleaning tool 283 are coupled. Because I tried to make it
The cleaning tool 283 and the endoscope 211 can be reliably connected to each other, and the cleaning tool 283 can be made difficult to come off from the distal end configuration portion 213 of the side-view endoscope 211.

Further, in the present modification, FIG.
In addition to the effect of the fifth modified example of (C), it is not necessary to provide a key groove in a narrow space like the cleaning tool insertion hole 281 of the endoscope 211 unlike the fifth modified example. It will be easier and will lead to cost reduction.

Further, the effect of cleaning the housing portion 216 of the tip forming portion 213 and the effect of not having to remove and attach a part of the tip forming portion 213 are the same as those of the first modification. Further, in this modification, since the key 291 is used as the connection method between the cleaning tool 283 and the endoscope 211 in particular, the structure is simple and highly resistant to frequent attachment and detachment.

In this modification, the cleaning tool insertion hole 281 of the endoscope 211 is a hole, but a cutout may be provided instead of the hole for communicating the storage chamber 216 with the outside.
Further, the cleaning tool insertion hole 281 is provided at the tip end portion of the resin cover 215, but it may be provided anywhere on the resin cover 215, or a plurality thereof can be provided. Further, in the present modification, the cleaning tool 283 and the endoscope 21
The key 291 is used for the connection method with the No. 1 terminal, but any method may be used as long as it has the above-mentioned retaining function.

The key groove 292 is provided on the outer peripheral surface of the resin cover 215 of the endoscope 211, and the key 291 is provided.
May be provided on the inner peripheral surface of the tip portion of the cover member 284 of the cleaning tool 283.

In this case, since the key groove 292 which is difficult to clean is exposed on the outer peripheral surface of the resin cover 215, the cleaning performance of the key groove 292 is improved. The resin cover 2
15 is provided with a key 291 to cover the cleaning tool 283.
When the key groove 292 is provided in 84, since the cover member 284 of the cleaning tool 283 has no protrusion, there is no fear that the protrusion will damage the lenses provided at the distal end portion of the endoscope 211.

29A and 29B show an eighth modified example of the endoscope. This is shown in FIG.
(B) Connection between the side-viewing endoscope 211 of the sixth modified example and a cleaning tool 283 such as a cleaning solution sending means or a cleaning solution absorbing means connected to the side-viewing endoscope 211. This is a partial modification of the structure of the section. That is, in the sixth modified example, instead of providing the male thread portion 282 for attaching the cleaning tool on the outer peripheral surface of the resin cover 215 of the endoscope 211, in this modified example, the outer periphery of the resin cover 215 of the endoscope 211 is replaced. A smooth surface 301 is formed on the surface.

Furthermore, the cleaning tool 28 according to the sixth modified example.
The screw hole 28 is formed on the inner peripheral surface of the tip of the cover member 284 of No. 3
6, a ring-shaped groove 302 is formed, and a ring-shaped elastic member 303 is fitted in the ring-shaped groove 302. The inner diameter of the ring-shaped elastic member 303 is set smaller than the outer diameter of the smooth surface 301 of the resin cover 215. Then, the cover member 284 of the cleaning tool 261.
When the resin cover 215 of the endoscope 211 is inserted and connected in the inside, the elastic member 303 elastically deforms and the resin cover 2
It is designed to be pressed against 15 smooth surfaces 301.

Therefore, in the structure described above, the smooth surface 301 is formed on the outer peripheral surface of the resin cover 215 of the endoscope 211, and the ring-shaped groove is formed on the inner peripheral surface of the distal end portion of the cover member 284 of the cleaning tool 283. Since the ring-shaped groove 302 is formed and the ring-shaped elastic member 303 is fitted in the ring-shaped groove 302, the endoscope 211 is inserted into the cover member 284 of the cleaning tool 283.
When the resin cover 215 is inserted and connected, the elastic member 303 is elastically deformed to cause the smooth surface 30 of the resin cover 215.
It can be pressed against 1. Therefore, the cleaning tool 283
Elastic member 303 of the cover member 284 and the resin cover 2
15 by the frictional force between the smooth surface 301 and the cleaning surface 28.
Since the 3 and the endoscope 211 can be reliably connected, the cleaning tool 283 can be made difficult to come off from the distal end forming portion 213 of the side-view endoscope 211.

Further, the effect of cleaning the housing portion 216 of the tip forming portion 213 and the effect of not having to remove and attach a part of the tip forming portion 213 are the same as those of the first modification. Furthermore, in this modification, since the cover member 284 of the cleaning tool 283 and the smooth surface 301 of the resin cover 215 are in contact with each other via the soft elastic member 303, the cover member 284 of the cleaning tool 283 and The wear between the resin cover 215 and the smooth surface 301 is reduced, and the resin cover 215 withstands long-term use.

In this modification, the elastic member 303 is provided on the cover member 284 of the cleaning tool 283, but it may be provided on the outer peripheral surface of the resin cover 215, or on both of them. Good. Further, a plurality of elastic members 303 may be provided.

If the elastic member 303 is provided on the outer peripheral surface of the resin cover 215, the elastic member 303 can be easily replaced. When the elastic member 303 is provided on the cover member 284 of the cleaning tool 283, the elastic member 303 is not exposed to the outside, which is excellent in appearance.

Further, in this modification, since it is not necessary to provide the elastic member 303 in a narrow space like the cleaning tool insertion hole 281 of the endoscope 211 as in the fourth modification, the processing is facilitated and the cost is reduced. Leads to.

30A and 30B show a ninth modified example of the endoscope. This is shown in FIG.
(B) Connection between the side-viewing endoscope 211 of the sixth modified example and a cleaning tool 283 such as a cleaning solution sending means or a cleaning solution absorbing means connected to the side-viewing endoscope 211. This is a partial modification of the structure of the section. That is, in the sixth modified example, a male thread portion 282 for attaching a cleaning tool is provided on the outer peripheral surface of the resin cover 215 of the endoscope 211, and a screw hole portion 286 is provided on the inner peripheral surface of the distal end portion of the cover member 284 of the cleaning tool 283. In this modified example, instead of providing a screwing portion for screwing the spaces, a tapered taper surface 311 is provided on the outer peripheral surface of the resin cover 215 of the endoscope 211, and the tip of the cover member 284 of the cleaning tool 283 is provided. The tapered surface 31 of the endoscope 211 is provided on the inner peripheral surface of the portion.
1 is provided with a tapered joint surface 312.

Therefore, in the above-described structure, when the resin cover 215 of the endoscope 211 is inserted and connected into the cover member 284 of the cleaning tool 283, the cleaning tool is attached to the tapered surface 311 of the endoscope 211. Since the tapered joint surface 312 of the cover member 284 of 261 is joined,
The cleaning tool 283 and the endoscope 211 can be reliably connected to each other, and the cleaning tool 283 can be made difficult to come off from the distal end configuration portion 213 of the side-view endoscope 211.

Further, in this modified example, unlike the first modified example, it is not necessary to provide a tapered surface in a narrow space like the cleaning tool insertion hole 281 of the endoscope 211, so that the processing is facilitated,
It leads to cost reduction. Also, since the connection method is a taper fitting, the structure is simple and easy to clean.

31 (A) and 31 (B) show a tenth modification of the endoscope. This is shown in FIG.
A side view type endoscope 211 of the sixth modified example of (A) and (B) and a cleaning tool 283 such as a cleaning solution sending means or a cleaning solution absorbing means connected to this side view type endoscope 211. A part of the structure of the connecting portion between is further modified. That is,
In the sixth modified example, a male screw portion 282 for attaching a cleaning tool and a cleaning tool 2 are provided on the outer peripheral surface of the resin cover 215 of the endoscope 211.
The screw hole 28 is formed on the inner peripheral surface of the tip of the cover member 284 of No. 83.
In this modification, a ring-shaped groove 321 is provided on the outer peripheral surface of the resin cover 215 of the endoscope 211, and a cover member 284 of the cleaning tool 283 is provided instead of providing a screwing portion for screwing the same with the screw 6. A plurality of arm portions 322 extending rearward are provided at the rear end portion (end portion on the proximal side), and the ring-shaped groove portion 3 of the endoscope 211 is provided on the inner peripheral surface of the distal end portion of the arm portions 322.
21 is provided with a convex portion 323 that engages with.

Therefore, in the above structure, when the resin cover 215 of the endoscope 211 is inserted and connected into the cover member 284 of the cleaning tool 283, the ring-shaped groove portion 321 of the endoscope 211 is covered. Each arm portion 322 of the member 284
Since the projection 323 of the side view is engaged, the cleaning tool 283 and the endoscope 211 can be reliably connected to each other, and the cleaning can be performed from the distal end configuration part 213 of the side view type endoscope 211. The tool 283 can be made difficult to come off.

Further, in this modification, the ring-shaped groove portion 321 of the endoscope 211 and the arm portions 32 of the cover member 284 are provided.
Since the second convex portion 323 may be small, a large space is not required unlike the case of providing the key groove and the key of the seventh modified example.

Further, in this modification, the ring-shaped groove portion 321 is provided in the resin cover 215 of the endoscope 211, and the arm portion 3 is provided.
Although the convex portion 323 of 22 is provided on the cover member 284 of the cleaning tool 283, the ring-shaped groove portion 321 is provided on the inner peripheral surface of the cover member 284 of the cleaning tool 283 and is made of resin of the endoscope 211. The convex portion 323 may be provided on the outer peripheral surface of the cover 215. Furthermore, the ring-shaped groove 3 is formed in each of the resin cover 215 and the cover member 284 of the cleaning tool 283.
Both 21 and the convex portion 323 may be provided. Further, the numbers and shapes of the ring-shaped groove portion 321 and the convex portion 323 are not particularly limited.

Further, FIG. 32 (A) shows internal pipes 331 such as the air supply pipes 31 and 32, the water supply pipes 33 and 34, and the suction pipes 23a and 32b of the endoscope 1 of the first embodiment. 7 shows a cleaning state of the internal conduit 331 of the endoscope 1 when cleaning is performed using the special first cleaning liquid supplied through the endoscope conduit cleaning device 82.

The first cleaning liquid used here is a cleaning liquid containing hard particles. This hard particle-containing cleaning liquid is a liquid in which a large number of hard particles 333 made of a polymer material are mixed in the base cleaning liquid 332. The sizes of the hard particles 333 are the internal conduit 331 of the endoscope 1 and the cleaning liquid supply tube 77.
a, 77b, and sufficiently small so as not to cause clogging of the internal conduit (not shown) of the connector device 78.

Next, the internal conduit 331 of the used endoscope 1 is used.
A method of cleaning the above with the above-mentioned hard particle-containing cleaning liquid will be described. First, after connecting the endoscope duct cleaning device 82 to the operation section 2, when the hard particle-containing cleaning liquid is supplied from the liquid supply means, the hard particle-containing cleaning liquid sent from the cleaning liquid supply tube 77a is inside the connector device 78. It enters into the cylinder part 25 via a pipe line (not shown), and further from this cylinder part 25, the air supply pipe line 31 and the water supply pipe line 33 on the insertion part side, and the air supply pipe line 32, the water supply pipe line 34 on the connector 5 side. To wash the inside of these lines.

Here, the cleaning liquid which has cleaned the insertion portion side air supply conduit 31 and the water supply conduit 33 is opened at the opening 9 of the tip forming portion 9.
The cleaning liquid flowing out from d and cleaning the air supply conduit 32 and the water supply conduit 34 on the connector 5 side flows out from the air supply / water supply mouthpiece 79b and the air supply mouthpiece 79a of the connector 5.

Furthermore, a connector is provided through a valve mechanism (not shown) which flows from the air supply pipe 31 to the gas cylinder 24c via the gas pipe 24a on the insertion side communicating with the pipe 31 and is released by the gas cylinder plug 80. After cleaning the side gas pipe line 24b, the gas flows out from the gas port plug 24e.

Further, the cleaning liquid sent from the cleaning liquid supply tube 77b is an internal conduit (not shown) of the connector 78.
Through the suction pipe line 23a on the insertion portion side and the suction pipe line 23b on the connector side. The cleaning liquid is also sent from the insertion portion side suction conduit 23a to the forceps conduit 10a communicating therewith.

In this way, the cleaning liquid containing hard particles is sent to the internal conduits 331 of all the endoscopes 1, and the hard particles 333 mixed in a large number therein are contained in the endoscope conduit 331.
While colliding with the inner wall 331a of the cleaning liquid 332, it flows in the pipe line 331 together with the cleaning liquid 332. At the time of the collision, a part of the dirt 334 attached to the inner wall 143 of the internal duct 331 of the endoscope 1,
Peeled filth 334 peeled off from the inner wall 331a
Are carried on the flow of the cleaning liquid 332 to the outside of the conduit 331.

Here, since a large number of hard particles 333 are mixed in the cleaning liquid 332, by feeding the cleaning liquid containing hard particles for a certain period of time or more, the above operation is repeated over the entire pipeline system, Internal conduit 331 of endoscope 1
It is possible to remove all the dirt 334 attached to the inner wall 331a of the.

Therefore, when the internal conduits 331 of the endoscope 1 are cleaned using the above-mentioned first cleaning liquid, they adhere to the inner walls 331a of all the internal conduits 331 built in the endoscope 1. It is possible to obtain a cleaning effect equivalent to or better than the case where the waste is brushed and washed away with the cleaning liquid.

In this embodiment, the hard particles 333 are made of a polymer material, but any material may be used as long as it does not damage the conduit 331. The hard particles 333 may have any shape as long as the pipe 331 is not clogged and the pipe 331 is not greatly damaged.

Further, in this embodiment, the hard particles 333 are mixed in the cleaning liquid 332, but instead of the cleaning liquid 332.
The cleaning effect can be obtained even when mixed with a liquid such as water or alcohol that does not damage the endoscope conduit 331. Further, bubbles may be further mixed in the liquid containing the hard particles 333 to be sent.

Further, only the material of the hard particles 333 mixed in the first cleaning liquid may be changed to tempered glass. Further, only the material of the hard particles 333 may be ceramic or metal. Further, even a polymer material may be used as the material of the hard particles 333 as long as it has excellent abrasion resistance, heat resistance, chemical resistance, etc. and can withstand reuse sufficiently. In this case, wash the hard particles 333 after use.
The disinfection has an effect that the hard particles 333 can be reused.

Further, FIG. 32B shows a cleaning state of the internal conduit 331 of the endoscope 1 when the second cleaning liquid is used. The second cleaning liquid is the base cleaning liquid 34.
1 contains a large number of soft particles 342 mixed therein.
The size of the soft particles 342 depends on the internal duct 33 of the endoscope 1.
1 and the cleaning liquid supply tubes 77a and 77b, and the internal conduits (not shown) of the connector device 78 are small enough not to cause clogging. Further, any shape may be used as long as the pipe line 331 is not clogged.

The hardness of the soft particles 342 is equal to or softer than that of the softest part in the duct system. A large amount of this mixed in the cleaning liquid 341 is used as the soft particle-containing cleaning liquid of the second cleaning liquid.

Next, the internal conduit 331 of the used endoscope 1 is used.
A method of cleaning the dirt 343 attached to the inner wall 331a of the above with the above-mentioned cleaning solution containing soft particles will be described. First, the soft particles 342 mixed in the soft particle-containing cleaning liquid sent to the internal conduit 331 of the endoscope 1 collide with the inner wall 331a of the internal conduit 331 of the endoscope 1 while colliding with the cleaning liquid 341. It flows in the pipeline 331.

[0260] Inner wall 331a of the inner duct 331 of the endoscope 1
A part of the dirt 343 attached on the upper surface of the inner wall 33 when the collision occurs.
The debris 343 ′ that has been peeled off from 1 a is carried by the flow of the cleaning liquid 341 to the outside of the pipeline system.
However, unlike the case where the first cleaning liquid is used, the soft particles 342 for cleaning are elastically deformed when colliding with the inner wall 331a of the internal conduit 331 of the endoscope 1, so that the internal conduit of the endoscope 1 is There is no risk of damaging the inner wall 331a of 331.

Therefore, when the internal conduits 331 of the endoscope 1 are cleaned using the second cleaning liquid, they adhere to the inner walls 331a of all the internal conduits 331 built in the endoscope 1. The filth 343 has a cleaning effect equal to or better than that of the case where the filth is brushed and rinsed with the cleaning liquid, and the internal conduit 331 of the endoscope 1 is not damaged.

In this embodiment, the soft particles 342 are mixed in the cleaning liquid 341, but instead of the cleaning liquid 341, water,
Even if mixed with a liquid such as alcohol that does not damage the internal conduit 331 of the endoscope 1, the cleaning effect can be obtained. Further, bubbles may be further mixed in the liquid in which the soft particles 342 are mixed to send the liquid.

Further, FIG. 32C shows a cleaning state of the internal conduit 331 of the endoscope 1 when the third cleaning liquid is used. This third cleaning liquid is the base cleaning liquid 35.
A large number of disintegrating particles 352 are mixed in the above item 1. The size of the collapsible particles 352 is small enough not to cause clogging of the internal conduit 331 of the endoscope 1, the cleaning liquid supply tubes 77a and 77b, and the internal conduit (not shown) of the connector device 78. In addition, the pipeline 331
Any shape may be used as long as it does not cause clogging.

The disintegrating particles 352 are an assembly of particle elements finer than that and are molded by sintering or adhering them. However, the binding force between the minute particle elements is weak, and the force above the pressure that may damage the softest part of the endoscopic duct system is the particle 3
When added to 52, the bonds between the particle elements are partly broken and the shape of the collapsible particles 352 is collapsed. A large amount of this mixed in the cleaning liquid 351 is used as the disintegrating particle-containing cleaning liquid of the third cleaning liquid.

Next, the internal conduit 331 of the used endoscope 1
A method of cleaning the dirt 353 attached to the inner wall 331a of the above with the above-described cleaning liquid containing disintegrating particles will be described. First, the collapsible particles 352 mixed in the collapsible particle-containing cleaning liquid sent to the internal conduit 331 of the endoscope 1 collide with the inner wall 331 a of the internal conduit 331 of the endoscope 1 while cleaning liquid. 35
It flows in the conduit 331 together with 1.

Inner wall 331a of the inner duct 331 of the endoscope 1
The filth 353 adhered to the upper part of the inner wall 33 at the time of the collision.
The filth 353 ′ that has been peeled off from 1 a is carried by the flow of the cleaning liquid 351 to the outside of the pipeline system.
However, unlike the case where the first cleaning liquid is used, the shape of the disintegrating particles 352 for cleaning collapses when a force larger than a pressure that may damage the inner wall 331a of the internal conduit 331 of the endoscope 1 is applied. Therefore, the internal conduit 33 of the endoscope 1
There is no fear of damaging the inner wall 331a of No. 1

In the present embodiment, the disintegrating particles 352 are mixed in the cleaning liquid 351, but instead of the cleaning liquid, it is mixed in a liquid such as water or alcohol which does not damage the internal conduit 331 of the endoscope 1. Also has a cleaning effect. Further, bubbles may be further mixed in the liquid in which the disintegrating particles 352 are mixed to send the liquid.

The present invention is not limited to the above embodiments, and it goes without saying that various modifications can be made without departing from the gist of the present invention.

Next, other characteristic technical matters of the present application will be additionally described as follows.

(Supplementary Note 1) In an endoscope conduit switching device which comprises a cylinder and a piston fitted in the cylinder so as to be able to advance and retract, the piston conduit is switched in the endoscope conduit switching device. An endoscope conduit characterized in that a finger contact portion having a space in which an elastic member for advancing and retracting is disposed has at least one opening communicating the space outside the finger contact portion with the space. Switching device.

(Effect of Additional Item 1) There is no fear that the disinfection of the finger pad internal space and the members adjacent to the finger pad internal space will be incompletely sterilized by the air entering the finger pad internal space.

(Additional Item 2) The endoscope channel switching device according to Additional Item 1, wherein at least one opening is provided in the crown of the finger rest.

(Effect of Supplementary Note 2) In addition to the effect of Supplementary Note 1, by providing an opening at the top of the head, slippage is prevented when the finger contact member is pushed in with a finger.

(Additional Item 3) The endoscope channel switching device according to Additional Item 1, wherein at least one opening is provided in the side wall portion of the finger contact portion.

(Effect of Supplementary Note 3) In addition to the effect of Supplementary Note 1, since the opening is provided in the side wall, the opening does not touch the finger when the finger-contact member is pushed in by the finger.
There is no discomfort in operation.

(Additional Item 4) In the above additional item 1, at least one opening portion is provided in each of the crown and the side wall portion of the finger contact portion, and the endoscope channel switching device is characterized.

(Effect of Supplementary Note 4) In addition to the effect of Supplementary Note 1, since the openings are provided in the side wall and the crown, respectively, air can be vented in two directions. Compared to this, the air venting work can be performed reliably.

(Additional Item 5) In the above additional item 1, at least one opening is provided in the vicinity of the boundary region between the crown of the finger rest and the side wall portion.

(Effect of Supplementary Note 5) In addition to the effect of Supplementary Note 1, since an opening is provided obliquely, the opening faces upward during immersion, so air is generated more than in Supplementary note 1 above. It becomes easier to pull out.

(Additional Item 6) In the above additional item 1, at least one opening is provided in each of the vicinity of the boundary between the crown of the finger rest and the side wall and the crown of the finger rest. Endoscope conduit switching device.

(Effect of Appendix 6) In addition to the effect of Appendix 5, the provision of an opening at the top of the head prevents slipping when the finger-contact member is pushed in with a finger.

(Additional Item 7) In the above additional item 1, at least one opening is provided in each of the vicinity of the boundary between the crown of the finger rest and the side wall and the side wall of the finger rest. Endoscope conduit switching device.

(Effect of Additional Item 7) In addition to the effect of Additional Item 5, since the opening is provided in the side wall, the opening does not touch the finger when the finger-contact member is pushed in.
There is no discomfort in operation.

(Additional Item 8) In the above additional item 1, at least one opening is provided in each of the vicinity of the boundary between the crown and the side wall of the finger rest, the crown of the finger rest, and the side wall of the finger rest. An endoscope duct switching device characterized in that a section is provided.

(Effect of Supplementary Note 8) In addition to the effect of Supplementary note 5, air is easily released when immersed in any direction.

(Additional Item 9) The endoscope conduit switching device according to Additional Item 1, wherein the opening is a notch.

(Effect of Supplementary Note 9) In addition to the effect of Supplementary Note 1, processing is easy because the opening is a notch.

(Additional Item 10) In the above additional item 1,
An endoscope conduit switching device characterized in that the opening is a hole.

(Effect of Supplementary Note 10) In addition to the effect of Supplementary Note 1, since the opening is a hole, the strength of the finger contact portion is stronger than the case where the notch is formed as in Supplementary note 9 above. high.

(Additional Item 11) One end has a liquid feed conduit communicating with various conduits of an endoscope, and the other end has a conduit communicating with the liquid feed conduit and opening to the outside. A liquid feeding means can be connected to the opening, and when the liquid feeding means is connected, an endoscope duct cleaning including a cleaning device side liquid feeding means connecting portion that communicates the liquid feeding conduit with the conduit of the liquid feeding means The apparatus has an opening connectable to the cleaning apparatus side liquid feeding means connection portion, and has a pipeline communicating with the opening at one end, and the pipeline is connected to the cleaning apparatus side fluid feeding means. , A cleaning device connecting portion that communicates with the liquid supply conduit of the endoscope conduit cleaning device, an adapter internal conduit that communicates with the conduit of the cleaning device connecting portion at one end, and one end of the adapter internal conduit It has a conduit that communicates with the other end and the other end opens to the outside, and the liquid sending means can be attached and detached at the opening, and the liquid sending means can be connected. In this state, the adapter-side liquid-feeding means connecting portion in which the pipe of the liquid-feeding means and the internal pipe of the adapter communicate with each other, the liquid-absorbing pipe line communicating with the internal pipe line of the adapter, the liquid-absorbing pipe line and the inside of the adapter. At least one supply pipe that is provided in a part of the adapter pipe that is closer to the cleaning device mounting part than the communicating part of the pipe, opens only when the internal pipe of the adapter is pressed, and is water-tight otherwise It is provided at the communication part between the roadside valve and the internal pipe of the adapter and the liquid absorption pipe, part of the liquid absorption pipe, or both of them, and opens only when a pressure is applied to the internal pipe of the adapter. And an at least one liquid suction conduit side valve that keeps watertightness, and an endoscope conduit cleaning device adapter.

(Prior Art of Supplementary Note 11) The endoscope conduit cleaning apparatus supplies cleaning liquid to various conduits such as air supply, water supply, and suction of an endoscope after use to clean various conduits. Known to do. A typical example thereof is shown in Japanese Patent Publication No. 3-8213. The configuration is such that a connector device for connecting an endoscope conduit cleaning device to the mouthpieces of various conduit openings of an endoscope, a cleaning liquid supply tube communicating with the connector device, and a cleaning liquid supply tube communicating with the connector device. From the liquid inlet means that has a syringe taper or a luer lock at the open end, the liquid suction conduit that communicates with the liquid sender connector, and the other end of the liquid suction conduit that has a filter built in. Made of Two valves, a liquid suction conduit side valve and a cleaning liquid conduit side valve, are provided inside the liquid sending means connector. This is because when a syringe is connected to the liquid feeding means connector and suction is performed, the liquid absorption conduit side is opened and the cleaning liquid conduit side is closed, and when pressure is fed by a syringe, the liquid absorption conduit side is closed and the cleaning liquid supply conduit side is opened. Has become. In order to use this to feed the cleaning liquid to various pipelines, first, a syringe is connected to the connector of the liquid feeding means, and the liquid suction port is immersed in the cleaning liquid. When aspirated by the syringe, the fluid is sucked only from the liquid suction conduit due to the action of the valve, so that the cleaning liquid is drawn into the syringe through the liquid suction conduit. Then push the syringe in,
Due to the action of the valve, the cleaning liquid does not flow into the liquid suction conduit, but flows only into the cleaning liquid supply tube. The cleaning liquid further flows into the cleaning liquid supply conduit via the connector for supplying liquid, and is then supplied to the endoscope conduit system for cleaning. As described above, in the example disclosed in Japanese Examined Patent Publication No. 3-8213, it is possible to deliver liquid to the endoscope duct system without removing the syringe one by one, by the action of the plurality of valves.

(Problems to be Solved by the Technology in Appendix 11) However, since not all the endoscope duct cleaning devices generally have the above-mentioned valve function, a pipe without a valve is not provided. In the case of using the path cleaning tool, it was necessary to remove the syringe from the connector each time the liquid was fed, fill the washing liquid in the connector, connect the connector again, and then feed the liquid. This imposes a heavy burden on the operator when the liquid has to be sent a plurality of times. Further, if the valve function is added to all endoscope duct cleaning tools, there is a problem that the number of parts increases and the cost increases.

(Purpose of Supplement 11) The purpose of Supplement 11 is to easily add the function of the valve to all the conduit cleaning devices that pump the cleaning liquid into the endoscope conduit using a syringe. An object of the present invention is to provide an endoscope conduit cleaning device adapter that can be used.

(Operation of Supplementary Note 11) Originally, for an endoscope duct cleaning device in which the syringe must be removed from the endoscope duct cleaning device every time the cleaning liquid is fed and the syringe must be replenished with the cleaning liquid. Then, by mounting the endoscope conduit cleaning device adapter of the present invention on the syringe mounting portion, when suction is performed with the syringe mounted on the adapter, only the liquid suction conduit side valve opens due to the suction pressure during suction. The cleaning liquid can be sucked into the syringe through the liquid suction port, and then pressure-fed with the syringe, the pressing force opens only the cleaning liquid supply conduit side valve,
The cleaning liquid can be sent in the direction of the cleaning supply line.

(Effect of Supplementary Note 11) Essentially, every time the cleaning liquid is supplied, the liquid supply means must be detached from the endoscope conduit cleaning device, and the liquid supply means must be filled with the cleaning liquid. By attaching the endoscope conduit cleaning device adapter to the cleaning device, the cleaning liquid can be filled into the liquid supplying means without removing the liquid supplying means, and the cleaning liquid is supplied to the endoscope conduit. Labor is reduced. In addition, by providing a cleaning device connecting section that matches the liquid feeding means connector of each endoscope conduit cleaning device, all endoscope conduit cleaning devices can be
A valve function can be added.

(Additional Item 12) In the above additional item 11, a luer lock type syringe can be screwed into the opening of the adapter side liquid feeding means connecting portion, and an endoscope conduit cleaning device adapter. .

(Effect of Supplement 12) In addition to the effect of Supplement 11, since a Luer lock syringe can be screwed into the opening of the adapter-side liquid feeding means connector, the Luer lock syringe and the adapter can be screwed together. The connection between the side liquid feeding means connectors is strong.

(Additional Item 13) In the above additional item 11, the opening of the adapter side liquid feeding means connecting portion is a tapered hole having substantially the same taper angle as the injection portion of the syringe. Pipe line cleaning device adapter.

(Effect of Supplementary Note 13) In addition to the effect of Supplementary Note 11, since the opening of the adapter-side liquid feeding means connector is a tapered hole having a taper angle substantially the same as that of the injection portion of the syringe, the adapter Since the side liquid feeding means connector and the syringe are firmly joined and the connecting portion has a tapered shape and has a simple structure, it is easy to clean that portion.

(Additional Item 14) In the above additional item 11, there is provided at least one ring-shaped or tubular elastic member on the inner wall of the opening of the adapter-side liquid-feeding means connection portion. Road cleaning device adapter.

(Effect of Appendix 14) In addition to the effect of Appendix 11, since the inner wall of the opening of the adapter-side liquid feeding means connector 96 has at least one ring-shaped or tubular elastic member. Since the liquid does not leak from the connecting portion, the liquid can be efficiently transferred.

(Additional Item 15) In the above additional item 11, the opening portion of the cleaning device connecting portion is a tubular member having a taper angle substantially the same as that of the injection portion of the syringe. Pipe line cleaning device adapter.

(Effect of Supplement 15) In addition to the effect of Supplement 11, since the cleaning device connecting portion has substantially the same shape as the injection port of the syringe, the syringe is connected to the liquid feeding means connector. It can be firmly connected to a possible endoscopic duct cleaning device. Moreover, since the connecting portion has a tapered shape and has a simple structure, that portion can be easily cleaned.

(Additional Item 16) In the above additional item 11, the opening portion of the cleaning device connecting portion is a tubular member having at least one ring-shaped or tubular elastic member on the outer periphery thereof. Adapter for endoscope duct cleaning device.

(Effect of Supplement 16) In addition to the effect of Supplement 11, since at least one ring-shaped or tubular elastic member is provided on the outer periphery of the cleaning device connecting portion, liquid from the connecting portion can be removed. Since there is no leakage, efficient liquid transfer is possible.

(Additional Item 17) In the above additional item 11, for the endoscope channel cleaning device in which a luer lock type syringe is screwed into the opening of the cleaning device side liquid feeding means connecting portion,
An endoscope conduit cleaning device adapter having a cleaning device connecting portion that can be screwed into the cleaning device side liquid feeding means connecting portion.

(Effect of Supplementary Note 17) In addition to the effect of Supplementary Note 11, a cleaning device connecting portion is provided for an endoscope conduit cleaning device having a liquid feeding means connector that can be screwed into a luer lock syringe. In the structure capable of being screwed into the liquid feeding means connector, the connection becomes stronger than that of the taper type, and the cleaning device connector is unlikely to come off from the liquid feeding means connector during the cleaning operation.

(Additional Item 18) In the above additional item 11, the opening of the cleaning device connecting portion can be connected to the opening of the cleaning device side liquid feeding means connecting portion of a plurality of endoscope conduit cleaning devices. An endoscope conduit cleaning device adapter characterized in that.

(Effect of Supplementary Note 18) In addition to the effect of Supplementary Note 11, it is necessary to manufacture endoscopic conduit cleaning device adapters corresponding to different types of endoscope conduit cleaning devices. Since there is no, it leads to cost reduction.

(Additional Item 19) In the above additional item 11, a tube is provided between the conduit of the connector for the cleaning device and the internal conduit of the adapter so as to connect them to each other. adapter.

(Effect of Supplementary Note 19) In addition to the effect of Supplementary Note 11, since the endoscope duct cleaning device adapter can be pulled close to the hand for use, the liquid feeding means can be used for cleaning the endoscope duct. Good workability when connecting to the device adapter and sending liquid.

(Additional Item 20) A pipe line having a liquid supply pipe line communicating with the first pipe line of the endoscope at one end, and a pipe line communicating with the liquid supply pipe line and having the other end opened to the outside. A first endoscope having a cleaning device side liquid supply means connecting portion which has a liquid supply means connectable to the opening thereof and which connects the liquid supply pipeline and the liquid supply means pipeline when the liquid supply means is connected. Mirror tube cleaning device and second end of endoscope
Has a pipe line communicating with the liquid supply pipe line communicating with the pipe line of which the other end is open to the outside, and a liquid supply means can be connected to the opening, and the liquid supply pipe is connected when the liquid supply means is connected. A second endoscope conduit cleaning device having a cleaning device-side liquid supply means connecting part that communicates the conduit with the conduit of the liquid supply means, and one end of which is opened to the outside, and the first part is opened at the opening. It is connectable to the cleaning device side liquid supply means connection part of the endoscope conduit cleaning device and the cleaning device liquid supply means connection part of the second endoscope conduit cleaning device, and at the time of connection, the endoscope conduit cleaning A washing device connecting portion having a pipe line communicating with the liquid sending pipe line of the device, an adapter internal pipe line communicating with the pipe line of the cleaning device connecting portion at one end, and one end communicating with the other end of the adapter internal pipe line In addition, the other end has a pipe line that opens to the outside, and the liquid feeding means can be attached and detached at the opening and the liquid feeding means is connected. Adapter-side liquid-feeding-device connecting portion in which the pipe of the liquid-feeding device communicates with the internal pipe of the adapter, liquid-absorbing pipe that communicates with the internal pipe of the adapter and the middle of the pipe, and communication of the liquid-absorbing pipe and internal pipe of the adapter At least one supply line side valve that is provided in a part of the adapter line that is closer to the cleaning device mounting side than the part, opens only when the internal pipe line of the adapter is pressed, and is watertight otherwise It is provided at the communicating part between the internal pipe of the adapter and the liquid absorption line, a part of the liquid absorption line, or both, and opens only when the internal pressure of the internal line of the adapter is applied, and keeps the watertightness other than that. An endoscope conduit cleaning device comprising at least one liquid suction conduit valve.

(Effect of Appendix 20) The same effect as Appendix 11 above.

(Additional Item 21) In an endoscope conduit switching device which comprises a cylinder and a piston fitted in the cylinder so as to move back and forth, and which switches the conduit arranged in the endoscope, the piston is An elastic member provided between the piston and the cylinder, a finger contact portion having a space for receiving the elastic member therein, and at least one finger contact portion provided with a space for receiving the elastic member. An endoscope conduit switching device comprising a transparent or semi-transparent observation window that can be observed from the outside.

(Prior Art of Supplementary Note 21) For example, in an endoscope for digestive organs, mucus or the like may adhere to the objective lens during endoscopic examination, which may obstruct the visual field. Therefore, by operating the air / water supply conduit switching device provided in the operation section of the endoscope, air is supplied to the surface of the objective lens from the nozzle provided in the tip configuration section through the air / water supply channel. Cleaning water is sprayed to remove adhered mucus and the like.

A typical example thereof is shown in Japanese Utility Model Laid-Open No. 2-88603. The structure is composed of a cylinder embedded in the operation portion of the endoscope and a piston made of a rigid body which is inserted into the cylinder so as to be capable of advancing and retracting and switches air supply and water supply. The piston is removably mounted by a cylinder by a mounting member that is fitted and inserted. The cylinder is connected to an air supply line and a water supply line from a gas supply source and a cleaning water supply source, and an air supply line and a water supply line communicating with the nozzle.

A finger contact portion is attached to the crown of the piston, and a space for accommodating a spring for urging the finger contact portion upward is provided therein.

Further, in addition to the function of the air / water / water switching device, a gas / water / water / gas switching device having a function of pressure-feeding an inert gas such as CO ₂ gas, and sucking dirt from the endoscope tip portion. A similar space is provided inside the finger contact portion of the suction operation device for performing the operation.

(Problems to be Solved by the Technology of Additional Item 21) However, in Japanese Utility Model Laid-Open No. 2-88603, the biasing in the finger contact portion of the air / water feeding switching device, the air / water feeding / gas feeding switching device, and the suction operation device. In the space to store the spring,
When the pistons are immersed in the disinfectant solution, air is likely to accumulate.

If sterilization is performed with the air accumulated,
Since the disinfectant does not touch the part where air bubbles are attached, that part cannot be disinfected. Therefore, normally, the air bubbles are removed by a work such as sending an antiseptic solution to the inside with a syringe, but since the inside of the finger rest cannot be seen from the outside, it was not possible to confirm whether the air bubbles were completely removed.

(Purpose of Supplementary Note 21) It is to make it possible to visually confirm whether or not the disinfection work of the conduit switching device has been successfully performed.

(Operation of Supplementary Note 21) When the endoscope channel switching device is immersed in the disinfectant solution, it is possible to visually determine whether or not the air remains in the internal space of the finger contact portion, and the disinfection work is spoiled. Rarely.

(Effect of Supplementary Note 21) When air enters the internal space of the finger contact member, the wall surface to which air bubbles are attached may not be disinfected because the disinfectant does not come into contact with the air bubbles. Because you can check the presence of
Complete disinfection work.

(Additional Item 22) In an endoscope conduit switching device for switching a conduit arranged in an endoscope, which comprises a cylinder and a piston fitted in the cylinder so as to move forward and backward, the piston is An endoscope comprising: an elastic member provided between a piston and a cylinder; and a finger rest part which has a space for receiving the elastic member inside and is entirely transparent or semi-transparent. Pipe line switching device.

(Effect of Supplementary Note 22) In addition to the effect of Supplementary Note 21, the number of blind spots in the observation direction is smaller than that in Supplementary Note 21, and it is possible to more reliably confirm the presence or absence of bubbles inside.

(Additional Item 23) A liquid feeding means for feeding a cleaning liquid to various pipelines of an endoscope, and a cleaning liquid which is connected to the liquid feeding means and fed to the various pipelines of the endoscope. In the endoscope channel cleaning device, which is provided with a liquid-feeding conduit that leads to various mouthpieces that communicate with, and a connecting means that is connected to the liquid-feeding conduit and is connected to various mouthpieces of the endoscope, The liquid supply conduit portion was equipped with an adjusting means for varying the conduit inner diameter.

(Prior Art of Supplementary Note 23) As a conventional apparatus, there is Japanese Patent Publication No. 3-8213. When cleaning the conduit of the endoscope, as a means to do so, a syringe-like device is used as a liquid feeding means, a simple liquid feeding device for feeding liquid to a mouthpiece connected to various ducts of the endoscope, and an electric pump. It is also classified into two types, that is, the type used for supplying the cleaning liquid for the mouthpiece of the endoscope.

By the way, the endoscope has a difference in flow resistance and a volume in the pipe line depending on the pipe line. In the case of the above simple type, since the amount of liquid to be sent by one operation is not large, the difference in the pipe line volume becomes large. If there is one, it spreads to the smaller volume, but not to the larger one.

Further, when the cleaning liquid is sent by using the electric pump, the cleaning liquid can be continuously sent, but since the endoscopes have different flow resistances, the flow resistance is different. There is a disadvantage that the cleaning liquid flows only to the one having a small flow amount and does not flow to the one having a large flow resistance.

Therefore, the conventional device is shown in FIGS.
It has the configuration shown in. That is, a connector 300 for connecting an endoscope conduit cleaning device to the mouthpieces of various conduit openings of the endoscope, and a connector mounted on the connector 300 and inserted into a suction cylinder (not shown) of the endoscope. Suction inlet port 301a and an air / water inlet port 301b inserted into an air / water inlet cylinder (not shown) of the endoscope.
And tubes 302a and 302b connected to the respective inlets 301, a branch pipe 302 formed in a Y shape and connected to the tubes 302a and 302b, and a cleaning liquid connected to the other end of the branch pipe 302. A supply tube 303 and the cleaning liquid supply tube 303 are connected,
A syringe connector 304 having a syringe taper or a luer lock at the other end, a liquid feeding means 305 connected to the syringe connector 304, a liquid absorption conduit 306 communicating with the syringe connector 304, and the other end of the liquid absorption conduit 306. And a liquid suction port portion 307 having a built-in filter.

Inside the syringe connector 304, a liquid suction conduit side valve (not shown) for controlling the flow of fluid is on the liquid absorption conduit 306 side, and a cleaning liquid conduit side valve (not shown) is on the cleaning liquid supply tube 303 side. It is provided in.

Further, in order to supply the cleaning liquid suitable for the flow resistance of the endoscope duct and the internal volume of the duct, FIG. 33 (B),
As shown in (C), the air / water supply cylinder inlet 301
b, or at the lower end of the suction cylinder injection mouthpiece 301a, an orifice member 309 is provided which allows the opening area of the orifice 309a to be varied by advancing and retracting from the lower end to the outside.

[0333] Then, at the time of use, the tank 3 containing the cleaning liquid etc.
The liquid suction port 307 is immersed in 08. Syringe connector 3
When the liquid feeding means 305 is connected to 02 and sucked, the liquid suction conduit side valve inside the syringe connector 303 is opened, and the washing liquid conduit side valve is closed to fill the inside of the liquid feeding means 305 with the liquid.

When pressure is applied to feed the liquid filled in the liquid feeding means 305, the liquid suction conduit side valve is closed and the cleaning liquid supply conduit is opened, and the liquid passes from the cleaning liquid supply tube through each suction supply mouthpiece. , Liquid is sent to each duct of the endoscope.

At this time, the opening area of the orifice 306a is adjusted so as to properly balance the flow rate to each conduit of the endoscope.

(Problems to be Solved by the Technology in Appendix 23) Since the structure of the conventional means for adjusting the orifice diameter is complicated, the orifice adjusting means is not contaminated with dirt or the like generated during endoscope cleaning. It had the drawback of being easily deposited.

Further, when the orifice diameter is adjusted, it has to be adjusted for each pipeline, so that there is a drawback that the adjustment becomes complicated.

(Purpose of Supplementary Notes 23 to 26) To make the orifice diameter of the liquid supply conduit variable without impairing the cleaning performance of the endoscope cleaning tool.

(Operation of Additional Items 23 to 26) This is an operation of crushing the liquid feeding tube to adjust the orifice diameter.

(Effects of Additional Items 23 to 26) It is possible to make the diameter of the liquid supply conduit variable without impairing the cleaning property of the cleaning device itself.

(Additional Item 24) The endoscope conduit cleaning apparatus according to Additional Item 23, wherein the adjusting means is an adjusting means for smoothly changing the shape of the flow path through which the cleaning liquid flows.

(Additional Item 25) The adjusting means in the additional item 24 is characterized in that it comprises a means for crushing the liquid supply conduit.

(Additional Item 26) The adjusting means according to Additional Item 25 is characterized by comprising means for crushing one pipeline.

(Additional Item 27) The adjusting means according to additional item 25 is characterized in that it comprises means for crushing at least two or more pipelines.

(Purpose of Additional Item 27) Additional Items 23 to 26
In addition to the purpose of (1), once adjust the orifice diameter of at least two liquid feeding conduits.

(Operation of Supplementary Note 27) Supplementary Notes 23 to 26
In addition to the above function, it is the function of simultaneously adjusting the orifice diameters of the individual liquid supply pipelines.

(Effect of Supplementary Note 27) Since the diameter of each pipeline can be adjusted once, the optimum pipeline balance can be easily adjusted.

(Additional Item 28) The adjusting unit according to Additional Item 24 is characterized in that it comprises a conduit provided with a detachable orifice for the connecting means and the liquid feeding means.

(Purpose of Additional Item 28) Additional Items 23 to 26
In addition to the purpose, make the orifice adjusting means inexpensive.

(Operation of Supplementary Item 28) Supplementary Items 23 to 26
In addition to the above action, the action is to replace the liquid feeding tube itself and adjust the orifice diameter.

(Effect of Supplementary Note 28) The structure is simple and inexpensive.

(Additional Item 29) A storage chamber for installing a treatment instrument guider is provided at the distal end portion of the insertion section, and the treatment instrument guider installed in this storage chamber is driven to introduce the treatment instrument guide channel through the treatment instrument insertion channel. In the endoscope for controlling the derivation direction of the treatment instrument, the distal end portion can be communicated with the storage chamber, and can be connected to the cleaning liquid feeding means or the cleaning liquid suction means, or both of them, so that they do not easily come off at the time of connection An endoscope having at least one cleaning tool mounting opening having a structure.

(Prior Art of Supplementary Note 29) As is well known, medical endoscopes such as gastroscopes and duodenal scopes are used for observing and treating an affected part by inserting the insertion part into the body cavity of the patient. Is. A forceps raising device is a mechanism that directs forceps to a desired affected area when collecting biopsy tissue or treating it with forceps while observing the affected area. Basically, the forceps raising device is composed of a forceps raising base rotatably provided at the distal end portion of the insertion portion and an operation wire connected to the forceps raising base. By adjusting the angle, the direction of the forceps is determined.

When the endoscope is used, the fluid in the body cavity enters the forceps raising base storage chamber which stores the forceps raising base. Therefore,
It is necessary to clean after use, but since the forceps raising base storage chamber is a blind alley, cleaning is very time-consuming.

To deal with this, a forceps raising base,
The operation wire and the inner layer tubular member (the guide tube is composed of the outer layer tubular member (tube body) and the inner layer tubular member (closely wound coil body)) are detachable to facilitate cleaning. No. 56-8030.

Further, the forceps raising base accommodating chamber can be easily cleaned by making the tip cover detachable, as disclosed in Japanese Patent Laid-Open No. 4-314439 and Japanese Patent Publication No. 62-42.
It is disclosed in Japanese Patent Publication No. 606.

As another example, it has been proposed that the tip cover, the forceps raising base, and the operation wire be made detachable to facilitate cleaning.

(Problems to be Solved by the Technology of Appendix 29) In Japanese Patent Laid-Open No. 56-8030, since the forceps raising base storage chamber is a blind alley, it takes time to clean the forceps raising base storage chamber. However, it cannot be said that cleaning of the forceps raising base storage chamber has become extremely easy as compared with Japanese Utility Model Laid-Open Nos. 52-67790 and 52-38986.

Further, in Japanese Patent Laid-Open No. 4-314439 and Japanese Patent Publication No. 62-42606, the structure becomes complicated,
In addition, it takes time and effort to attach and detach.

(Purpose of Supplementary Note 29) The purpose of Supplementary Note 29 is to facilitate the cleaning work in the forceps raising base storage chamber and reduce the labor of the operator.

(Operation of Supplementary Item 29) When the cleaning liquid feeding means or the cleaning liquid suction means is connected to the cleaning tool mounting opening while the tip forming portion is immersed in the cleaning liquid, and the liquid is fed or absorbed, the volume of the storage chamber is increased. Is relatively small, and if a sufficient flow rate is supplied or absorbed, the cleaning liquid flows at a high speed and passes through the storage chamber. At that time, a large turbulent flow is formed in the storage chamber to remove the dirt attached to the detailed structure of the storage chamber.
At this time, the cleaning liquid feeding or cleaning liquid suction means connected to the cleaning tool mounting opening cannot be easily removed from the cleaning tool mounting opening by the retaining mechanism.

(Effect of Additional Item 29) When the cleaning liquid feeding means or the cleaning liquid absorbing means feeds or absorbs the liquid, the dirt inside the storage chamber can be easily removed. Further, according to the present technology, it is not necessary to attach and detach a part of the tip forming portion during cleaning, and the labor of the operator is reduced. Furthermore, since the connection portion cannot be easily removed from the cleaning tool mounting opening, the work is not interrupted when the cleaning liquid is fed or sucked, due to the connection portion being disconnected.

(Additional Item 30) The endoscope according to Additional Item 29, wherein the cleaning tool attachment opening is an opening having a taper shape substantially the same as the taper shape of the injection port of the syringe.

(Effect of Supplementary Note 30) In addition to the effect of Supplementary Note 29, since the connecting method depends on the fitting of the taper, the structure is simple and the cleaning performance of the connecting portion and the cleaning tool mounting opening itself is good.

(Additional Item 31) The endoscope according to Additional Item 29, wherein the cleaning tool attachment opening is an opening having a flange portion connectable to the injection port of the luer lock type syringe.

(Effect of Supplementary Note 31) In addition to the effect of Supplementary Note 29, since the connecting method is a luer lock, the structure is simple and more reliable connection can be achieved as compared with Supplementary Note 29.

(Additional Item 32) In the above additional item 29, for the cleaning liquid feeding means or the cleaning liquid suction means provided with a connection portion having an external thread on the outer peripheral surface, the external thread is attached to the cleaning tool mounting opening. An endoscope characterized in that a female screw capable of being screwed is provided on an inner wall thereof.

(Effect of Supplementary Note 32) In addition to the effect of Supplementary Note 29, since the connection method is a screw, reliable connection can be made, and unlike Supplementary Note 31, the number of thread engagement peaks can be freely designed to some extent. , Connection strength can be adjusted.

(Additional Item 33) In the above Additional Item 29, the cleaning tool attachment opening corresponds to the key with respect to the cleaning liquid feeding means or the cleaning liquid suction means having the connecting portion having the key on the outer peripheral surface. An endoscope having a key groove formed on its inner wall.

(Effect of Additional Statement 33) In addition to the effect of Additional Statement 29, since the connection method is by key, the structure is simple and the durability is high even when it is frequently attached and detached.

Further, since the key is provided in the connecting portion and the key groove is provided in the cleaning tool attaching opening, there is no protrusion in the connecting portion, and there is no fear of damaging the lenses and the like provided at the distal end of the endoscope by the protrusion. .

(Additional Item 34) In the above additional item 29, with respect to the cleaning liquid feeding means or the cleaning liquid suction means provided with the connection portion having the key groove on the outer peripheral surface, the key groove is formed in the cleaning tool mounting opening. An endoscope having a corresponding key provided on its inner wall.

(Effect of Supplementary Note 34) In addition to the effect of Supplementary Note 29, since the connection method is by key, the structure is simple and the durability is high even when it is frequently attached and detached.

Further, since the key groove is provided in the connection portion and the key is provided in the cleaning tool attachment opening, the key groove which is difficult to clean is exposed on the outer surface of the connection portion, which leads to improvement of the cleaning performance of the key groove.

(Additional Item 35) In the above additional item 29, the cleaning tool mounting opening is provided for the cleaning liquid feeding means or the cleaning liquid suction means having a connecting portion having an elastic member on the outer peripheral surface thereof. An endoscope, wherein the elastic member presses the cleaning tool mounting opening when the cleaning tool is inserted into the cleaning tool mounting opening.

(Effect of Supplementary Note 35) In addition to the effect of Supplementary Note 29, the cleaning tool mounting opening and the connecting portion do not rub directly as in Supplementary Note 29, and an elastic member softer than those members is used. Therefore, the wear of the cleaning tool mounting opening and the connection portion is reduced, and the cleaning tool withstands long-term use. Further, since the elastic member is provided at the connecting portion, it is easy to replace the elastic member.

(Additional Item 36) In the above additional item 29, an elastic member is provided in the cleaning tool mounting opening with respect to the cleaning liquid sending means or the cleaning liquid suction means provided with the connecting portion, and the elastic member is An endoscope characterized in that the elastic member presses the connecting portion when the connecting portion is inserted into the cleaning tool attachment opening.

(Effect of Supplementary Note 36) In addition to the effect of Supplementary Note 29, the cleaning tool mounting opening and the connecting portion do not rub directly as in Supplementary Note 29, and an elastic member softer than those members is used. Therefore, the wear of the cleaning tool mounting opening and the connection portion is reduced, and the cleaning tool withstands long-term use. Further, since the elastic member is provided in the opening for attaching the cleaning tool, the elastic member does not appear to the outside, which is excellent in appearance.

(Additional Item 37) A storage chamber for installing a treatment tool inductor is provided at the distal end portion of the insertion section, and the treatment tool inductor installed in this storage chamber is driven to introduce the treatment tool guide channel through the treatment tool insertion channel. In the endoscope for controlling the derivation direction of the treatment tool, at least one cleaning tool mounting opening communicating with the storage chamber is provided in the distal end configuration section, and the cleaning solution delivery means or the cleaning solution suction means is provided in the distal end configuration section. An endoscope characterized by having a cleaning tool disengagement prevention part which can be connected to both of them or which can be easily removed during connection.

(Effect of Supplementary Note 37) In addition to the effect of Supplementary Note 29, there is no need to process the narrow space inside the cleaning tool mounting opening as in Supplementary Note 32, which facilitates the processing and reduces the cost. Lead to down.

(Additional Item 38) In the above additional item 37, with respect to the cleaning liquid feeding means or the cleaning liquid suction means, which is provided with a connection portion for connecting to the cleaning tool attachment opening and a connection main body having a female screw, An endoscope characterized in that the cleaning tool disengagement prevention portion is a male screw that accumulates with the female screw.

(Effect of Supplementary Note 38) In addition to the effect of Supplementary Note 37, since the connection method is a screw, a reliable connection can be made, and the number of thread engagement ridges can be freely designed to some extent, so that the connection strength can be adjusted. .

(Additional Item 39) In the above additional item 37, the cleaning liquid feeding means or the cleaning liquid suction means including the connection portion for connecting to the cleaning tool attachment opening and the connection main body having the key are washed. An endoscope characterized in that the detachment prevention portion is a key groove corresponding to the key.

(Effect of Supplementary Note 39) In addition to the effect of Supplementary Note 37, since the connection method is by key, the structure is simple and the durability is high even when it is frequently attached and detached. Further, since the resin cover is provided with the key groove and the connection main body is provided with the key, the key groove which is difficult to clean is exposed on the outer surface of the resin cover, which leads to improvement of the cleaning performance of the key groove.

(Additional Item 40) In the above additional item 37, with respect to the cleaning liquid feeding means or the cleaning liquid suction means, which is provided with a connecting portion for connecting to the cleaning tool mounting opening and a connection main body having a key groove, An endoscope characterized in that the cleaning tool detachment prevention part is a key corresponding to the key groove.

(Effect of Additional Item 40) In addition to the effect of Additional Item 37, since the connection method is by key, the structure is simple and the durability is high even when it is frequently attached and detached. Further, since the key is provided on the resin cover and the key groove is provided on the connection body, there is no protrusion on the connection body, and there is no fear that the protrusions damage the lenses provided at the distal end portion of the endoscope.

(Additional Item 41) In the above additional item 37, a connecting portion to be connected to the cleaning tool attaching opening, a connecting body that incompletely covers the tip forming portion, and an elastic member provided on the inner wall of the connecting body. The cleaning tool detachment prevention portion has an outer diameter that elastically deforms the elastic member when the connection body and the tip forming portion are connected to the cleaning liquid delivery means or the cleaning liquid suction means. An endoscope characterized by.

(Effect of Supplementary Note 41) In addition to the effect of Supplementary Note 37, since the connection main body and the resin cover do not rub directly and an elastic member softer than those members is interposed, the connection main body is connected. And the wear of the resin cover is reduced, and it can withstand long-term use. Moreover, since the connection member is provided with the elastic member, the elastic member does not appear to the outside and is excellent in appearance.

(Additional Item 42) In the above-mentioned additional item 37, a cleaning liquid sending means having a connecting portion to be connected to the cleaning tool mounting opening and a connection main body shaped to incompletely cover the tip forming portion. , Or for the cleaning liquid suction means,
An endoscope characterized in that the cleaning tool disengagement prevention part is composed of an elastic member having an outer diameter that is elastically deformed when the connection body and the tip forming part are connected.

(Effect of Supplementary Note 42) In addition to the effect of Supplementary Note 37, since the connection main body and the resin cover do not rub directly and an elastic member softer than those members is interposed, the connection main body is connected. And the wear of the resin cover is reduced, and it can withstand long-term use. Further, since the elastic member is provided on the resin cover, it is easy to replace the elastic member.

(Additional Item 43) In the above additional item 37, a cleaning liquid having a connection portion connected to the cleaning tool attachment opening portion and a connection main body that incompletely covers the distal end constituent portion and has an inner wall having a tapered shape. An endoscope characterized in that the cleaning tool detachment prevention portion has a taper shape that fits with the taper shape of the inner wall of the connection body with respect to the liquid feeding means or the cleaning liquid suction means.

(Effect of Additional Item 43) In addition to the effect of Additional Item 37, since the fitting is achieved by the taper, the structure is simple and the cleaning property is good.

(Additional Item 44) In the above additional item 37, there is provided a connecting portion which is connected to the cleaning tool attachment opening portion, and a connection main body having at least one convex portion or concave portion, or both a convex portion and a concave portion. An endoscope, wherein the cleaning tool detachment prevention part is at least one concave part or convex part that is fitted to the convex part or concave part with respect to the cleaning liquid sending means or the cleaning liquid suction means.

(Effect of Additional Item 44) In addition to the effect of Additional Item 37, since the concave portion and the convex portion may be small,
There is no need to take a large space for providing the key groove and the key unlike the above-mentioned item 40.

(Additional Item 45) The endoscope according to Additional Item 29, wherein the cleaning tool attachment opening is a notch.

(Effect of Supplementary Note 45) In addition to the effect of Supplementary Note 29, when the notch of the cleaning tool mounting opening is used, the cleaning performance of the cleaning tool mounting opening is better than when the cleaning tool mounting opening is formed as a hole.

(Additional Item 46) The endoscope according to Additional Item 29, wherein the cleaning tool attachment opening is a hole.

(Effect of Supplementary Note 46) In addition to the effect of Supplementary Note 29, when the cleaning tool mounting opening is a hole, the cost is reduced because the processing is simple.

(Additional Item 47) A large number of particles having a size and shape that do not cause clogging at least in the conduit of the endoscope are mixed in a liquid, and the particles are mixed in the conduit of the endoscope having at least one conduit. A method for cleaning an endoscope conduit, characterized in that filth adhering to the inside of the conduit of an endoscope is cleaned by feeding the liquid into the endoscope.

(Prior Art of Supplementary Note 47) For example, in an endoscope for a digestive organ, a cleaning nozzle for cleaning dirt such as mucus adhered to an observation window of a distal end insertion portion during an endoscopic examination, a dirt, etc. It has the functions of a suction mechanism for sucking the gas and a gas feeding operation device for pressure-feeding the inert gas into the body cavity.
Therefore, an endoscope generally has a complicated pipe line system for passing water, air, inert gas, dirt, and the like.

Conventionally, in order to clean the conduit system, a method of pouring a cleaning agent into the conduit system using a dedicated endoscope conduit cleaning tool or cleaning with a dedicated cleaning brush has been used. .

(Problems to be Solved by the Technology in Appendix 47) However, the method of cleaning the conduit system with the dedicated brush has a simple structure to a certain extent and can be used only for conduits having a relatively large inner diameter. In addition, the method of pouring the cleaning liquid into the conduit with the dedicated endoscope conduit cleaning tool has the advantage of being able to clean complicated conduits, but the cleaning effect is inferior to the method of directly scraping off dirt with a brush. There was a drawback.

(Purpose of Supplementary Item 47) The purpose of Supplementary Item 47 is that it is possible to obtain a cleaning effect equal to or more than that of cleaning all the ducts of the endoscope with a cleaning liquid after brushing. Another object of the present invention is to provide a simple method for cleaning an endoscope duct.

(Operation of Supplementary Note 47) The Supplementary Note 47
Provides a cleaning effect equivalent to or more than that of cleaning the dirt adhered to all the inner walls of the ducts built in the endoscope with the cleaning liquid.

(Effect of Supplementary Note 47) The above supplementary note 47
Provides a cleaning effect equivalent to or more than that of cleaning the dirt adhered to all the inner walls of the ducts built in the endoscope with the cleaning liquid.

(Additional Item 48) An endoscope duct cleaning method characterized in that a large number of particles mixed in a liquid in the above additional item 47 has a reusable resistance.

(Operation of Additional Items 48 to 52) In addition to the effect of Additional Item 47, the above Additional Items 48 to 52 are characterized in that particles used for cleaning can be reused.

(Effects of Supplements 48 to 52) In Supplements 48 to 52, in addition to the function of Supplement 47, particles used for cleaning can be reused.

(Additional Item 49) In the above-mentioned additional item 48, a method for cleaning an endoscope duct characterized in that a large number of particles mixed in a liquid are made of tempered glass and are reusable.

(Additional Item 50) An endoscope conduit cleaning method according to Additional Item 48, wherein a large number of particles mixed in a liquid are made of a polymeric material and are reusable.

(Additional Item 51) In the above-mentioned additional item 48, a method of cleaning an endoscope duct, characterized in that a large number of particles mixed in a liquid are made of ceramic and can be reused.

(Additional Item 52) In the above-mentioned additional item 48, a method of cleaning an endoscope duct characterized in that a large number of particles mixed in a liquid are made of metal and can be reused.

(Additional Item 53) In the above additional item 47, an elastic member having a hardness equal to or less than the hardness of the softest conduit of the endoscope conduit through which a large number of particles mixed in the liquid are introduced. An endoscope duct cleaning method characterized by being composed of:

(Operation of Additional Items 53 to 56) In addition to the effect of Additional Item 47, the above Additional Items 53 to 56 ensure that particles used for cleaning do not damage the inner wall of the endoscope channel. Characterize.

(Effects of Supplementary Items 53 to 56) In addition to the action of Supplementary Item 47, in Supplementary Items 53 to 56, particles used for cleaning do not damage the inner wall of the endoscope conduit.

(Additional Item 54) In the above additional item 47, the particles mixed with the liquid are collided at a collision pressure equal to or lower than the collision pressure at which the softest conduit of the endoscope conduits into which the particles flow may be damaged. When it collides with the inner wall of the endoscope channel,
An endoscope duct cleaning method, characterized in that the particles disintegrate.

(Additional Item 55) In the above additional item 54, the particles mixed in the liquid are composed of a plurality of smaller constituent particles constituting the liquid and an adhesive agent for bonding the constituent particles. Endoscope conduit cleaning method.

(Additional Item 56) An endoscope conduit cleaning method, wherein the particles mixed in the liquid according to Additional Item 54 are formed by loosely sintering a plurality of smaller constituent particles.

[0419]

According to the present invention, a space for accommodating the biasing member for biasing the piston in a predetermined direction is provided inside the finger rest, and a space for storing the biasing member is provided in the finger rest. Since there is a communication port that communicates with the outside of the finger rest, the work of cleaning and disinfecting the entire switching device is eliminated by eliminating the part where air bubbles remain attached during cleaning and disinfecting work. Can be done easily.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a schematic configuration of an endoscope air / water switching device according to a first embodiment of the present invention.

FIG. 2 is a schematic configuration diagram of the entire endoscope apparatus.

FIG. 3 is a schematic configuration diagram showing a disposition state of each duct disposed inside the endoscope.

FIG. 4 is a vertical cross-sectional view showing a structure for mounting the packing to the upper member of the first packing support member of the piston body of the air / water switching device.

FIG. 5 is a vertical cross-sectional view showing a packing mounting structure for a lower member of a second packing supporting member of a piston body of the air / water switching device.

FIG. 6 is a longitudinal sectional view showing a schematic configuration of an air / water supply switching device for an endoscope according to a second embodiment of the present invention.

FIG. 7 is a vertical cross-sectional view showing a state where the piston portion is immersed in the liquid in the cleaning / disinfecting container.

FIG. 8A is a vertical cross-sectional view of an endoscope duct cleaning device adapter, and FIG. 8B is a plan view of a valve portion used in the adapter.

FIG. 9 is a side view showing a schematic configuration of an endoscope duct cleaning device.

FIG. 10 is a vertical cross-sectional view showing a state in which an endoscope duct cleaning device adapter is interposed between the endoscope duct cleaning device and the syringe.

FIG. 11 is a vertical cross-sectional view of a syringe connecting portion with a luer lock.

FIG. 12 is a schematic configuration diagram showing a modified example of the endoscope duct cleaning device.

FIG. 13 is a vertical cross-sectional view showing a modified example of the endoscope duct cleaning device adapter.

FIG. 14 shows another configuration example of the finger contact member of the air / water supply switching device, (A) is a plan view of the finger contact member,
FIG. 3B is a vertical cross-sectional view showing a mounting portion of a finger contact member of the air / water supply switching device for an endoscope.

FIG. 15 is a longitudinal cross-sectional view of a main part showing still another configuration example of the finger contact member of the air / water supply switching device.

FIG. 16 is a side view of a main part showing a cross section of a part of a flow rate adjuster for a cleaning liquid supply tube of an endoscope duct cleaning device.

FIG. 17A is a sectional view taken along line L ₁ -L _{1 of} FIG.
FIG. 6B is a cross-sectional view of the flow rate adjuster showing a state in which the pipe diameter of the internal pipe of the cleaning liquid supply tube is changed.

FIG. 18 is a side view of an essential part showing a cross section of a part of a first modified example of the flow rate adjuster.

FIG. 19 (A) is a perspective view of the flow rate control device main body, and FIG. 19 (B).
FIG. 4 is a vertical cross-sectional view of the main part of the flow rate adjuster showing a state in which the diameter of the internal conduit of the cleaning liquid supply tube is changed.

20A is a schematic configuration diagram of a second modified example of the flow rate adjuster, FIG. 20B is a sectional view taken along line L ₁ -L _{1 of} FIG.
[FIG. 6] is a transverse cross-sectional view of a main part showing a state in which the diameter of the internal conduit of the cleaning liquid supply tube is changed.

FIG. 21 (A) is a vertical cross-sectional view of a main part of a third modification of the flow rate adjuster, and FIG. 21 (B) is a side view of the main part showing a part of the tube in section.

FIG. 22 (A) is a longitudinal sectional view showing the configuration of the main part of a first modified example of the endoscope, and FIG. 22 (B) is a perspective view thereof.

FIG. 23 (A) is a vertical cross-sectional view showing the main configuration of a second modification of the endoscope, and FIG. 23 (B) is a perspective view thereof.

FIG. 24 (A) is a vertical cross-sectional view showing the main configuration of a third modification of the endoscope, and FIG. 24 (B) is a perspective view thereof.

FIG. 25A is a vertical cross-sectional view showing the configuration of the main parts of a fourth modified example of the endoscope, and FIG. 25B is a perspective view thereof.

FIG. 26 (A) is a vertical cross-sectional view showing the main configuration of a fifth modification of the endoscope, FIG. 26 (B) is a perspective view thereof, and FIG. 26 (C) is a key groove of a cleaning tool insertion hole and a cleaning tool. The schematic block diagram which shows the engagement state with a key.

FIG. 27 (A) is a vertical sectional view showing the configuration of the main part of a sixth modification of the endoscope, and FIG. 27 (B) is a perspective view thereof.

FIG. 28 (A) is a vertical cross-sectional view showing the main configuration of a seventh modified example of the endoscope, and FIG. 28 (B) is a perspective view thereof.

FIG. 29 (A) is a vertical cross-sectional view showing the main configuration of an eighth modified example of the endoscope, and FIG. 29 (B) is a perspective view thereof.

FIG. 30 (A) is a vertical cross-sectional view showing the main configuration of a ninth modified example of the endoscope, and FIG. 30 (B) is a perspective view thereof.

FIG. 31 (A) is a longitudinal sectional view showing the configuration of the main parts of a tenth modified example of the endoscope, and FIG. 31 (B) is a perspective view thereof.

FIG. 32 (A) is a longitudinal sectional view for explaining a cleaning state of the internal duct of the endoscope when the first cleaning liquid is used,
(B) is a vertical cross-sectional view for explaining a cleaning state of the internal conduit of the endoscope when the second cleaning liquid is used, and (C) is a third sectional view.
FIG. 6 is a vertical cross-sectional view for explaining a cleaning state of the internal duct of the endoscope when the cleaning liquid of FIG.

FIG. 33 (A) is a side view showing a schematic configuration of an endoscope duct cleaning device, (B) is a longitudinal cross-sectional view of a main part showing a state in which an orifice member is housed in a cylinder inlet. )
FIG. 3 is a vertical cross-sectional view of a main part showing a state in which an orifice member is projected to the outside of a cylinder injection port.

[Explanation of symbols]

1 ... Endoscope, 25 ... Cylinder part, 26 ... Piston part, 3
1, 32 ... Air supply conduit, 33, 34 ... Water supply conduit, 52 ... Finger contact member, 55 ... Spring member (biasing member), 58 ... Communication port, 59 ... Storage space.

Claims (1)

[Claims] 1. A cylinder comprising a cylinder connected to a plurality of conduits arranged in an endoscope, and a piston fitted in the cylinder so as to be able to move forward and backward and provided with a finger contact portion at an outer end thereof. ,
In an endoscope conduit switching device that switches the communication state of each conduit along with the movement of the piston in the cylinder, an attachment for urging the piston in a predetermined direction inside the finger contact portion. A space for accommodating a biasing member is provided, and a communication port for communicating between a storage space for the biasing member and the outside of the finger contacting portion is provided in the finger contact portion. Pipe line switching device.