JPH0919406A - Simple endoscope device - Google Patents

Abstract

(57) Abstract: [PROBLEMS] To provide a simplified endoscope apparatus capable of correctly and promptly replacing a light source lamp with a new lamp. An illumination light supply unit is attached to a light source lamp.
The lamp chamber unit 30a containing 2 and the other parts are configured separately, and the lamp chamber unit 30a is detachable from the other parts.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simplified endoscope apparatus in which an illumination light supply unit for supplying illumination light to a light guide is attached to an operation section.

[0002]

2. Description of the Related Art In a so-called simple endoscope device in which a light emitting body for illumination is provided in an operating portion, an illumination light supply unit having a light source lamp and a dry battery serving as a power source thereof is an operating portion of the endoscope. Is attached to.

The light source lamp is inserted and installed in a socket in the illumination light supply unit. When a lamp burnout occurs, the burnt lamp is removed from the socket and a new lamp is inserted into the socket to replace the lamp. It has become.

[0004]

However, since the replacement of the lamp is performed by a doctor or the like who is not familiar with the repair of the device, when the new lamp is attached, the lamp may be inclined and inserted with respect to the socket. .

As a result, the lamp is mounted so as to be displaced from a predetermined position, so that the amount of the light beam entering the light guide is reduced and the illumination light of the endoscope becomes dark.
The observation ability is significantly reduced.

Immediately after the lamp burns out while the endoscope is in use, the lamp is hot and cannot be touched. Therefore, in order to replace the lamp, it is necessary to wait until it cools down. Therefore, not only was time lost, but the patient was burdened.

It is therefore an object of the present invention to provide a simple endoscope device that can be replaced with a new lamp correctly and quickly when the light source lamp burns out.

[0008]

In order to achieve the above object, in the simplified endoscope apparatus of the present invention, the incident end portion of the light guide for transmitting the illumination light for illuminating the subject is arranged in the operation portion. In addition, in a simple endoscope apparatus in which an illumination light supply unit having a light source lamp for supplying illumination light to the light guide is attached to the operation portion, the illumination light supply unit includes the light source lamp. It is characterized in that the lamp chamber unit and the other parts are configured separately, and the lamp chamber unit is detachable from the other parts.

A battery for powering the light source lamp may be housed in the other portion, and a switch for switching on / off of the light source lamp is arranged in the other portion. May be.

Further, when the lamp chamber unit is connected to the other portions, the entire illumination light supply unit is preferably watertightly sealed, and the illumination light supply unit is connected to the operation portion. A connecting member for the above may be provided at one end of the lamp chamber unit.

[0011]

Embodiments will be described with reference to the drawings. FIG. 7 is a side view of the operation section 2 portion of the endoscope, and FIG. 8 is a rear view of the operation section 2. The lower end section of the operation section 2 is connected to the proximal end of the insertion section 1 which is covered by a flexible tube. There is.

The lower approximately three-quarters portion of the operation portion 2 is a grip portion 2a, and a forceps insertion port portion 4 is provided between the grip portion 2a and the insertion portion 1 so as to project obliquely forward. Has been. Reference numeral 3 is a pressure adjusting valve for adjusting the pressure inside the airtightly configured endoscope.

A suction operation valve 6 for performing a suction operation through a forceps channel (not shown) inserted in the insertion portion 1 in the operation mechanism portion 5 above the grip portion 2a of the operation portion 2.
And a bending operation lever 7 for remotely bending and operating a bending portion (not shown) formed at the distal end portion of the insertion portion 1 are arranged on the front surface and the rear surface, and an eyepiece portion 8 is provided on the upper surface. Has been done.

An illumination light guide fiber bundle 9 for transmitting illumination light for illuminating an object has an incident end portion arranged in an operation mechanism portion 5, and has a grip portion 2a in the insertion portion 1 and the operation portion 2. Through the inside, the ejection end portion is arranged at the tip of the insertion portion 1.

Then, the light guide fiber bundle 9
Illumination light supply unit 3 for supplying illumination light to
0 is detachably attached to the side surface portion of the operation mechanism unit 5.

As shown in FIG. 8, the illumination light supply unit 30 includes a light source lamp 32 for emitting illumination light to be supplied to the light guide fiber bundle 9 and a power source for turning on the light source lamp 32. A certain battery 100 or the like is built in. As the battery 100, any battery such as a dry battery or a rechargeable nickel-cadmium battery may be used.

The battery 100 is replaceable by removing the cap portion 30c detachably attached to the projecting end portion of the illumination light supply unit 30. 45 is a light source lamp 3
2 is a switch ring for performing switching operation of turning on and off of No. 2.

FIG. 9 is a side view of the illumination light supply unit 30,
FIG. 2 is a side sectional view, and the illumination light supply unit 30 is
A lamp chamber portion 30a, which is formed in a straight tube shape as a whole and has a light source lamp 32 built therein and is located near a connection portion with the operation portion 2, and a main body portion which accommodates the battery 100 and is located at an intermediate portion. 30b and a cap portion 30c located at the projecting end portion.

The outer wall of the main body portion 30b is formed by an outer cylindrical body 33 made of, for example, stainless steel, metal or plastic having a chemical resistant surface treatment, which has good corrosion resistance (chemical resistance).

Inside, a cylindrical inner cylindrical body 34 made of a highly conductive copper alloy such as copper or phosphor bronze is inscribed and fixed by means of a machine screw 35. The threaded portion is sealed with an adhesive.

The outer wall of the cap portion 30c is also formed of an outer case 37 made of a material having a good corrosion resistance, and an inner case 38 made of a material having a good conductivity is inscribed inside the outer case 37. It is fixed with machine screws 39.

The cap portion 30c is detachably attached to the main body portion 30b by screwing the inner case 38 into the inner cylindrical body 34, and the O ring 40 attached to the outer case 37. A waterproof seal is provided at the time of connection.

The battery 100 is built into the main body portion 30b and the cap portion 30c so as to extend over the main body portion 30b and the cap portion 30c.
A contact spring 42 attached to the inner case 38 of c is urged in the axial direction from the negative electrode side. The contact spring 42, the inner case 38, and the inner cylindrical body 34 are electrically connected to the negative electrode side of the battery 100.

Therefore, when it is necessary to replace the battery 100, the outer case 37 is rotated about the axis,
If the inner cylindrical body 34 and the inner case 38 are unscrewed, FIG.
As shown in, the cap portion 30c may be removed from the main body portion 30b, the battery 100 may be replaced with a new battery, and the cap portion 30c may be attached to the main body portion 30b again.

As shown in FIG. 2, the switch ring 45
Is formed in an annular shape around the central axis of the illumination light supply unit 30 and is rotatably fitted to the outer periphery of the outer cylindrical body 33 of the main body portion 30b. It is rotated.

Also, as shown in FIG. 4, a pair of pins 4 screwed into the switch ring 45 and adhesively sealed.
6, 47 are long grooves 4 formed in the outer cylindrical body 33 in the circumferential direction.
It penetrates through the inside of 8,49 and further reaches the inside thereof. As a result, the rotation range of the switch ring 45 is the pin 4
6 and 47 are restricted within a range in which they can rotate within the long grooves 48 and 49.

A conductive plate spring 51 fixed in contact with the inner cylindrical body 34 is arranged in the rotation range of the first pin 46, and the conductive plate 52 is electrically connected to one electrode of the light source lamp 32.
And the contact relationship between the conductive plate spring 51 and the first pin 46
Changes with the rotation of.

That is, as shown in FIG. 5, the tip of the conductive plate spring 51 is normally in contact with the conductive plate 52, and as a result, the conductive path is in communication and the light source lamp 32 is in a lighting state. .

Then, by rotating the switch ring 45,
When the first pin 46 rotates as shown by the broken line in FIG. 5, the conductive plate spring 51 is pushed by the first pin 46 and separated from the conductive plate 52, and as a result, the conductive path is interrupted and the light source lamp 32. Turns off.

In the rotation range of the second pin 47 on the one hand, the leaf spring 53 for click as shown in FIG.
The second pin 47 is elastically fixed at both end positions in the rotation range by the spring force of the click leaf spring 53.

Therefore, when the switch ring 45 is rotated, the switch ring 45 is elastically click-fixed at both ends of its rotation range and stands still, and the light source lamp 32 is turned on at one end position, and the other end is turned on. The light source lamp 32 is turned off at the end of.

As shown in FIG. 9, the outer cylindrical body 3
3 and the surface of the switch ring 45 are marked with an index indicating whether the light source lamp 32 is turned on or off with respect to the rotational position of the switch ring 45.

Returning to FIG. 2, the conductive leaf spring 51 and the click leaf spring 53 are both screwed and fixed to an electrically insulating fixing board 54. A pair of sealing rings 55 and 56 are attached to the front and rear of the fitting surface between the outer cylindrical body 33 and the switch ring 45 to seal the long grooves 48 and 49 from the outside. Since each of the sealing rings 55 and 56 is an elastic ring having an X-shaped cross section, a large frictional resistance against rotation of the switch ring 45 does not occur.

The lamp chamber portion 30a is constructed as one unit, and the cylindrical lamp chamber case 59 constituting the outer wall thereof is made of strong stainless steel, for example, and has an electrically insulating member at its base portion. 60 is screwed, and the electrically conductive plate 52 is screwed to the electric insulating member 60.

The socket 62 for connecting the light source lamp 32 is arranged inside the switch ring 45 and fixed to the conductive plate 52, and the first electrode 6 of the light source lamp 32 is fixed.
The terminal into which 3 is inserted is fixed so as to come into contact with the conductive plate 52, and the terminal into which the second electrode 64 of the light source lamp 32 is inserted comes into contact with the positive electrode of the battery 100.
6 is fixed in conduction.

In this way, the second electrode of the light source lamp 32 is always electrically connected to the positive electrode of the battery 100 arranged behind the socket 62. 67 is an electrically insulating fixing plate for fixing the terminals, and 68 is an electrically insulating spacer.

At the tip of the lamp chamber case 59, a reflecting mirror 71 for converging the illumination light emitted from the light source lamp 32 toward the incident end face of the light guide fiber bundle 9 is provided. It is joined and fixed to surround the.

A transparent cover glass 72 is fixed to the front end surface of the reflecting mirror 71 by a pressing nut 73. A sealant is applied to the outer peripheral surface of the cover glass 72, and is sealed so that water does not enter the lamp chamber case 59 from the outside.

On the outer peripheral surface of the tip of the lamp chamber case 59, there is formed a male screw 74 which is screwed with a female screw (not shown) formed on the inner peripheral surface of the unit receiving cap 10 provided on the operating portion 2 side. The illumination light supply unit 30 is connected to the operation unit 2 by screwing both screws together.

Then, the illumination light emitted from the light source lamp 32 is reflected by the reflecting mirror 71, and then the cover glass 7
After passing through 2, the light is converged and incident on the incident end face of the light guide fiber bundle 9.

The illumination light supply unit 30 is detached from the operation section 2 by unscrewing the male screw 74 at the tip of the lamp chamber case 59 from the operation section 2 side. 75 is
This is an O-ring for sealing the fitting portion between the lamp chamber case 59 and the unit receiving cap 10 when the illumination light supply unit 30 is connected to the operation portion 2.

A fixed ring 7 for connecting and fixing the lamp chamber portion 30a to the main body portion 30b is provided on the outer periphery of the lamp chamber case 59.
7 is rotatably fitted, and by screwing a male screw 78 formed on the outer periphery of the rear end of the fixed ring 77 and a female screw 79 formed on the inner periphery of the front end of the outer tubular body 33, The lamp chamber portion 30a and the main body portion 30b are connected and fixed.

At this time, the lamp chamber case 59 and the outer cylindrical body 3
The rotation with respect to No. 3 is restricted by the rotation restricting pin 81 protruding from the lamp chamber case 59 engaging with the groove 82 formed in the outer cylindrical body 33.

Further, the fixed ring 83 fixed to the lamp chamber case 59 by the rotation restricting pin 81 is fitted on the outer periphery of the lamp chamber case 59 and sandwiched between the fixed ring 77 and the outer cylindrical body 33. Lamp chamber case 59 and outer cylinder 33
Axial fixation with and is done.

Reference numeral 85 designates the lamp chamber case 59 and the outer cylindrical body 3.
3, which is an O-ring for sealing the connection with 3, and together with the O-ring 40 and the sealing rings 55, 56, etc., the entire illumination light supply unit 30 is watertightly sealed.

In the apparatus having the above structure, when the light source lamp 32 is cut off, the fixed ring 77 of the lamp chamber portion 30a is rotated with the illumination light supply unit 30 removed from the operation portion 2. Then, the screw engagement with the outer cylindrical body 33 of the main body portion 30b is released.

Then, as shown in FIG. 1, the entire lamp chamber portion 30a can be removed by pulling it out forward from the main body portion 30b, so that a new lamp chamber portion 30a can be attached to the main body portion 30b in the reverse order. .

The fixed ring 77 has a smaller outer diameter than the outer cylindrical body 33, the switch ring 45, and the like. Then, as shown in FIG. 8, when the illumination light supply unit 30 is attached to the operation portion 2, the fixed ring 77 enters inside the unit receiving cap 10. Therefore, the fixing ring 77 is not accidentally rotated when the illumination light supply unit 30 is attached to or detached from the operation section 2.

[0049]

According to the present invention, the illumination light supply unit is divided into a lamp chamber unit containing a light source lamp and other portions, and the lamp chamber unit is detachably attached to the other portions. As a result, when the light source lamp burns out, you can replace the lamp chamber unit with a new one instead of the light source lamp alone, so there is no need to touch the lamp directly, and the lamp may be bent and inserted into the socket. Without this, the lamp can be replaced correctly and quickly.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a lamp chamber section separated from an illumination light supply unit according to an embodiment of the present invention.

FIG. 2 is a side sectional view of the illumination light supply unit according to the embodiment of the present invention.

FIG. 3 is a side sectional view of the cap portion separated from the illumination light supply unit according to the embodiment of the present invention.

FIG. 4 is a sectional view taken along the line IV-IV of the embodiment of the present invention.

FIG. 5 is a partial side view of the conductive leaf spring according to the embodiment of the present invention.

FIG. 6 is a partial side view of the leaf spring for clicking according to the embodiment of the present invention.

FIG. 7 is a side view of the simplified endoscope device according to the embodiment of the present invention.

FIG. 8 is a rear view of the simplified endoscope device according to the embodiment of the present invention.

FIG. 9 is a side view of the illumination light supply unit according to the embodiment of the present invention.

[Explanation of symbols]

 2 Operation part 9 Light guide fiber bundle 30 Illumination light supply unit 30a Lamp chamber part (lamp chamber unit) 32 Light source lamp

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kunitoshi Ikeda 2-39 Maeno-cho, Itabashi-ku, Tokyo Asahi Kogaku Kogyo Co., Ltd. (72) Inventor Kuniyoshi Kaneko 2-36-36 Maeno-cho, Itabashi-ku, Tokyo No. 9 Asahi Kogaku Kogyo Co., Ltd. (72) Inventor Takashi Koeda 2-36 Maeno-cho, Itabashi-ku, Tokyo Tokyo Asahi Kogaku Kogyo Co., Ltd.

Claims (5)

[Claims] 1. An illumination light supply unit in which an incident end portion of a light guide for transmitting illumination light for illuminating an object is arranged in an operation portion and a light source lamp for supplying the illumination light to the light guide is built in. In the simple endoscope device attached to the operation portion, the illumination light supply unit is configured by being divided into a lamp chamber unit containing the light source lamp and other portions,
A simplified endoscope apparatus, wherein the lamp chamber unit is detachably attached to other portions. 2. The simplified endoscope apparatus according to claim 1, wherein a battery serving as a power source of the light source lamp is housed in the other portion. 3. The simplified endoscope apparatus according to claim 1, wherein a switch for switching between turning on and off the light source lamp is arranged in the other portion. 4. The simplified endoscope apparatus according to claim 1, wherein the entire illumination light supply unit is watertightly sealed when the lamp chamber unit is connected to the other portions. . 5. The simplified internal view according to claim 1, wherein a connecting member for connecting the illumination light supply unit to the operation portion is provided at one end of the lamp chamber unit. Mirror device.