JPH08280613A - Simple endoscope device - Google Patents

Abstract

(57) [Abstract] [Purpose] It is an object of the present invention to provide a simplified endoscope apparatus in which the endoscopic examination is not interrupted even if the power supply battery built in the illumination light supply unit is exhausted. To do. A built-in battery-powered unit 30 having a light source lamp 32 and a battery for turning on the light source lamp 32 as an illumination light supply unit, a light source lamp 32, and electric power for turning on the light source lamp 32 are commercially available. An AC / DC conversion unit 130 having an AC / DC converter for obtaining from an AC power source and illumination light incident from an external light source lamp 32 are transmitted to an illumination light guide of an endoscope via a light guide cable 332. The light guide cable type unit 330 thus configured can be selectively attached to and detached from the operation section.

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 an illumination light guide is detachably attached to an operating portion.

[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 operation portion, an illumination light supply unit having a miniature bulb and a dry battery as its power source is attached to the operation portion of the endoscope. It has a special structure.

[0003]

However, if a battery is used as the power source of the light source, the battery will be exhausted during the endoscopic examination and the illumination will be dark, so that the endoscopic examination can be continued. It may disappear.

In such a case, it is very troublesome for the doctor to replace the battery during the examination, and it is a great pain for the patient who is kept waiting during that time. Unfortunately, if there is no replacement battery, there is a serious inconvenience that the inspection must be stopped halfway.

Therefore, it is an object of the present invention to provide a simplified endoscope apparatus in which the endoscopic examination is not interrupted even if the power supply battery built in the illumination light supply unit is used up. .

[0006]

In order to achieve the above-mentioned object, the simplified endoscope apparatus of the present invention has an operation end portion of an illumination light guide for transmitting illumination light for illuminating a subject. In the simple endoscope device provided with an illumination light supply unit for supplying illumination light to the illumination light guide detachably with respect to the operation portion,
As the illumination light supply unit, a built-in battery-powered unit containing a light source lamp and a battery for lighting the light source lamp, an alternating current for obtaining power from the commercial AC power source for lighting the light source lamp and the light source lamp / A direct-current conversion unit having a DC converter, and a light guide cable type unit adapted to transmit illumination light incident from an external light source lamp to a light guide for illumination of the endoscope through a light guide cable. Is selectively attachable to and detachable from the operating section.

As the illumination light supply unit, an external DC power supply type unit in which a power supply for lighting the built-in light source lamp is obtained from an external DC power supply can be attached to and detached from the operation section. Good.

[0008]

Embodiments will be described with reference to the drawings. FIG.
A side view of the operation unit 2 portion of the endoscope, FIG. 7 is a rear view,
The base end of the insertion part 1 which is covered with a flexible tube is connected to the lower end of the operation part 2.

The lower 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.

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

And, 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. 7, 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 50 detachably attached to the end portion of the illumination light supply unit 30. Instead of the battery 100, the battery 100 shown in FIG.
An AC / DC adapter 80 can also be connected as shown in FIG.

The AC / DC adapter 80 has a plug 8 which can be plugged into an outlet of a 100-volt or 200-volt commercial AC power source distributed to ordinary households.
2, the commercial AC voltage is converted into a DC voltage of 3 V, for example, and the light source lamp 32 can be turned on.

FIG. 1 shows an operation unit 2 and an illumination light supply unit 3.
The main body case 11 which shows the vicinity of the connection portion with 0 and covers the operation mechanism portion 5 of the operation portion 2 is made of electrically insulating plastic.

The bearing cylinder 12 which supports the bending operation lever 7 and the suction operation valve 6 are fitted and inserted into separate holes formed in the main body case 11, and are watertightly sealed at each portion. The bearing tube 12 and the base of the suction operation valve 6 are fixed to a frame 13 having strength and conductivity such as metal or carbon resin in the operation section 2 (hereinafter, simply referred to as “metal frame 13”). ing.

A lid 15 made of an electrically insulating plastic is fitted into the side opening formed in the main body case 11 and an O-ring 16 for sealing is attached to the fitting surface. Water does not enter the inside of the operation unit 2.

A rotation stopper 2 for restricting relative rotation between the lid 15 and the main body case 11 is provided at the fitting portion.
1 is formed. Although the O-ring 16 is crushed by being mounted, the figure shows a cross-section in a natural state before being crushed (hereinafter the same).

At the central axis position of the through hole formed in the central portion of the lid body 15, the base portion is the metal frame 13 inside the operation portion 2.
A support cylinder 17 fixed to the is arranged. Then, the light guide mounting cylinder 18 screwed and connected to the support cylinder 17
However, it protrudes outward from the projecting end of the support cylinder 17.

The incident end of the light guide fiber bundle 9 is screwed and fixed at the central axis position of the light guide mounting barrel 18, and the light guide fiber bundle 9 is incident on the projecting end of the light guide mounting barrel 18. A convex meniscus lens 20 is watertightly joined to face the end face.

A unit socket 27 made of, for example, stainless steel for receiving (connecting) the illumination light supply unit 30 which is attached to and detached from the operating portion 2 is provided in the through hole formed in the lid body 15 toward the outside. It is fitted so as to protrude, and is fixed by being pressed inward by a metal tightening ring 28 screwed into the support cylinder 17.

However, the unit socket 27 and the tightening ring 2
A cylindrical insulating tube 29 made of electrically insulating plastic is interposed between the unit receiving mouth 27 and the tightening ring 28 so that the unit receiving mouth 27 and the tightening ring 28 do not come into contact with each other. The ring 28 is electrically insulated.

As described above, since the lid 15 and the insulating cylinder 29 which are in contact with the unit receiving cap 27 on the operating portion 2 side are both electrically insulating, the unit receiving cap 27 protruding outward from the operating portion 2 is attached to the unit receiving cap 27. Even if a leak current or the like from the outside flows, the leak current is not transmitted to other members of the operation unit 2.

An O-ring for sealing is attached to the fitting portion between the respective members arranged inside the hole of the lid body 15, and the operation portion 2 is protected from water from the outside at all portions. It has a watertight structure that does not enter. Of course, the insertion portion 1 is also formed in a watertight structure.

The illumination light supply unit 30 is formed in a straight tubular shape as a whole, and has a lamp chamber portion 30a near the connection portion with the operation portion 2 and a battery on the side remote from the connection portion with the operation portion 2. It is divided into a chamber portion 30b, and FIG. 1 shows the entire lamp chamber portion 30a.

The outer wall of the battery chamber portion 30b is formed by an outer case 31b made of, for example, stainless steel, metal or plastic with a chemical-resistant surface treatment having good corrosion resistance (chemical resistance). A cylindrical inner case 31a made of copper or a copper alloy having good properties such as phosphor bronze is inscribed and arranged.

At the boundary between the lamp chamber portion 30a and the battery chamber portion 30b, the lamp socket 33 to which the light source lamp 32 is detachably inserted and attached is fixed to the inner case 31a through some parts. . The structure of the fixed portion will be described later.

The cylindrical lamp chamber case 35a forming the outer wall of the lamp chamber portion 30a is made of strong stainless steel, for example, and is connected and fixed to the outer case 31b.

Lamp chamber case 35a and outer case 31b
The rotation restricting pin 37 protruding from the lamp chamber case 35a is rotated in the groove 36 formed in the outer case 31b.
Is regulated by engaging with.

A fixed ring 38 fixed to the lamp chamber case 35a by a rotation restricting pin 37 is fitted to the outer periphery of the lamp chamber case 35a and is screwed to the outer case 31b. The lamp chamber case 35a and the outer case 31b are sandwiched between and fixed in the axial direction. Reference numeral 39 is an O-ring for sealing the connecting portion between the lamp chamber case 35a and the outer case 31b.

At the tip of the lamp chamber case 35a, a reflecting mirror 34 for converging the illumination light emitted from the light source lamp 32 toward the incident end surface of the light guide fiber bundle 9 surrounds the light source lamp 32. Adhesive fixed.

A transparent cover glass 49 is fixed to the front end surface of the reflecting mirror 34 by a pressing nut 40. A sealant is applied to the outer peripheral surface of the cover glass 49, and is sealed so that water does not enter the lamp chamber case 35a from the outside.

On the outer peripheral surface of the tip of the lamp chamber case 35a,
A male screw that is screwed with a female screw formed on the inner peripheral surface of the unit base 27 is formed, and the illumination light supply unit 30 is connected to the operation unit 2 by connecting both the screws. .

Then, the illumination light emitted from the light source lamp 32 is reflected by the reflecting mirror 34, and then the cover glass 4
After passing through 9 and the convex meniscus lens 20, they converge and enter the incident end surface of the light guide fiber bundle 9.

Then, the illumination light supply unit 30 is detached from the operation section 2 by unfastening the screw connection between the unit socket 27 and the lamp chamber case 35a. 41 is
When the illumination light supply unit 30 is connected to the operation unit 2, the lamp chamber case 35a and the unit socket 27
It is an O-ring for sealing the fitting part with.

The two electrodes protruding rearward from the light source lamp 32 are inserted into the socket 33 and electrically connected to the connection pins 42a, 42b on the rear side thereof. The base end of each connection pin 42a, 42b is divided and fixed to two electrode plates 43a, 43b arranged with an insulating plate 44 interposed therebetween.

The positive electrode of the battery 100 is always in contact with the one electrode plate 43a, and the other electrode plate 43
In b, via a holding cylinder 46 made of a highly conductive metal,
The inner case 31a is electrically connected.

These members are surrounded by an electrically insulating tubular body 45, and are pressed and fixed together with the socket 33 to the inner case 31a by a holding nut 47 screwed to the inner case 31a.

FIG. 2 shows the battery chamber 30b. A cap portion 50 is detachably screwed to an end portion of a cylindrical inner case 31a accommodating the battery 100, and the energization between the battery 100 and the light source lamp 32 is turned on to the cap portion 50. , Has a built-in switch to turn it off.

Reference numeral 51b is an outer cylindrical body made of a material having good corrosion resistance, and forms an outer wall of the cap portion 50. An inner cylinder 51a made of a metal having good conductivity, which is detachably screwed to the inner case 31a, is disposed inside the inner case 51a, and the outer cylinder 51b and the inner cylinder 51a are screwed together. And it is integrated by fixing with screws. 5
Reference numeral 2 is an O-ring for sealing.

The outer case 3 on the side of the battery chamber 30b
1b outer peripheral surface and the outer cylinder 51b on the side of the cap 50
An O-ring (cap portion O-ring) 53 for sealing is attached to the fitting portion with the inner peripheral surface of the device so that water does not enter the inside from there.

At the other end of the inner cylinder 51a of the cap 50, a cap main body 54 made of a highly conductive metal is screwed and integrally connected to the inside of the outer cylinder 51b. Then, the first compression coil spring 55, one end of which is received by the cap body 54, is movably in the axial direction via the push ring 56 fitted into the inner cylindrical body 51a,
The battery 100 is biased toward the lamp chamber portion 30a. This ensures contact between the positive electrode of the battery 100 and the electrode plate 43a.

The first compression coil spring 55 is arranged coaxially with the battery 100, and the push ring 56 is arranged so as not to contact the negative electrode of the battery 100.
It is in contact with the peripheral portion of 0. Reference numeral 57 denotes a ring-shaped washer having a good sliding property.

Reference numeral 58 denotes a movable contact member which comes into contact with the negative electrode of the battery 100, and is formed of a rigid body made of a highly conductive metal into a cylindrical shape having a bottom portion, and is movable in the axial direction in the cap body 54. Has been inserted into.

A contact 58a formed at the center of the bottom surface of the movable contact member 58 is pressed against the center of the negative electrode of the battery 100 by the second compression coil spring 66.

The guide pin 59 projecting from the outer peripheral surface of the movable contact member 58 engages in the guide groove 60 formed in the cap body 54 in the axial direction, so that the movable contact member 58 rotates about the axis. It is regulated to do. Further, the leaf spring 61 whose base is fixed to the cap main body 54 is
It is pressed against the head of 9 from the outside.

The guide pin 59 and the leaf spring 61 are also made of a highly conductive metal, and the negative electrode of the battery 100 has a movable contact member 58, a guide pin 59 and a leaf spring 6.
1, the inner cylindrical body 51a, the inner case 31a, and the like, and the negative electrode plate 43 through the good conductive metals that are sealed in the illumination light supply unit 30 and are isolated from the outside and contact each other.
It is electrically connected to b.

Therefore, the battery 100 serves as a power source,
Light source lamp 3 with almost no voltage drop in the conductive path
2 lights up. Even when the illumination light supply unit 30 is dipped in a chemical solution or the like, each conductive member does not come into contact with the chemical solution, so that it does not corrode and good conductivity can be maintained.

A rotary shaft 63, which is rotatable about the axis of the cap 50, is fitted inside the tubular movable contact member 58, and the rotary shaft 63 projects toward the projecting end of the cap 50. A switch operation ring 64 is screw-bonded and integrally connected to the head of the.

The switch operating ring 64 is formed in a substantially bowl shape and is arranged so as to surround the end portion of the cap portion 50. The switch operating ring 64 and the outer cylindrical body 51b inside the switch operating ring 64 are provided at the outer edge corners. In the space between and, a drain hole 64a for draining water entering at the time of cleaning and disinfecting is formed.

The drain hole 64a may be one, but
Since the drainage property is better when a plurality of them are provided, it is better to provide two at 180-degree symmetrical positions, and if more than three are provided, the drainage property will be better.

Since the drain holes 64a are formed in the outer edge corners of the switch operating ring 64 as described above, the water entering the space between the switch operating ring 64 and the outer cylindrical body 51b inside thereof is washed and disinfected. Is smoothly discharged, and the switch operating ring 6
It doesn't collect on the back side of 4. Reference numeral 65 is a decorative plate.

The head portion of the movable contact member 58 is the outer cylindrical body 5.
1b is rotatably fitted to the inner peripheral surface of the end portion 1b, and the fitting O-ring (switch O-ring) 67 is fitted to the fitting portion.
Is attached to prevent water from entering inside. In this way, the illumination light supply unit 30 has a watertight structure in which water does not enter from the outside in all parts.

When comparing the switch portion O-ring 67 and the cap portion O-ring 53, there is not much difference in wire diameter, but the ring diameter of the cap portion O-ring 53 is much larger. Therefore, the sliding resistance against the rotational movement in the fitting portion is greater in the cap portion O ring 53 portion than in the switch portion O ring 67 portion.

In this embodiment, the ring diameter of the cap O-ring 53 is about three times the ring diameter of the switch O-ring 67. However, if the ring diameter is more than doubled, there will be a clear difference in the sliding resistance against the rotational movement.

As shown in FIG. 3 showing a III-III cross section, a lead pin 69 is provided on the outer peripheral surface of the rotary shaft 63 so as to project outward perpendicularly to the axis. 70 is
It is a leaf spring for giving resistance when the lead pin 69 rotates around the axis of the rotary shaft 63 and comes to both end positions thereof.

The movable contact member 5 through which the lead pin 69 penetrates
8 and the side wall of the cap portion main body 54 are provided with a cam groove 71 and a circumferential groove 72 for escape. Therefore, when the lead pin 69 is rotated around the axis of the rotary shaft 63, the movable contact member 58 is forced to move in the axial direction by the cam groove 71 against the biasing force of the second compression coil spring 66. Then, the contact 58a is separated from the negative electrode of the battery 100, and the light source lamp 32 is turned off.

FIG. 4 shows the switch operating ring 6 in this way.
4 shows a state in which the switch is turned off by rotating 4 and FIG.
Shows the VV cross section. In this embodiment, when the switch operating ring 64 is rotated 90 degrees from the ON state, the lead pin 69 is rotated via the rotary shaft 63 that rotates integrally with the switch operating ring 64, and the movable contact member 58 causes the cam groove 7 to move.
The contact point 58a is separated from the negative electrode of the battery 100 by being guided by 1 and moving in the axial direction.

The central axis of rotation of the switch operating ring 64 is screwed into the inner case 31a of the battery chamber 30b and the cap portion 5 is screwed.
It coincides with the center axis of rotation of the inner cylindrical body 51a of 0. However, as described above, the cap portion O-ring 53 has a larger ring diameter and a larger sliding resistance than the switch portion O-ring 67.

Therefore, when the switch operating ring 64 is rotated, the outer cylindrical body 51b of the cap portion 50 does not rotate with respect to the outer case 31b of the battery chamber portion 30b, and the inner cylindrical body 51a of the cap portion 50 and the battery chamber The screwing of the portion 30b with the inner case 31a does not loosen.

The battery 100 is biased by the first compression coil spring 55 in the direction opposite to the direction in which the movable contact member 58 is separated from the battery 100 by the switch operation, and the first compression coil spring 55. When,
Since the battery 100, the contact 58a, the second compression coil spring 66, and the like are coaxially arranged, the battery 100 can be placed in the battery chamber portion 30b without rattling in any of the on and off states. It is kept stable.

When the cap portion 50 is removed from the illumination light supply unit 30 for replacing the battery 100, the outer cylindrical body 51b is directly sandwiched and rotated, and the inner cylindrical body 51a and the inner case 31a are screwed together. Just solve it.

As shown in FIG. 4, the leaf spring 61 that presses the head portion of the guide pin 59 is bent so that it just comes out of the state of pressing the guide pin 59 at the switch-off position. Therefore, a so-called click acts at that position, and a stable stationary state is obtained.

FIG. 9 shows an illumination light supply unit which can be connected to the operation section 2 of the endoscope of the above-mentioned embodiment, both of which are detachable from the unit receiving cap 27. . Therefore, an appropriate illumination light supply unit can be selected and used as needed.

Shown at the top is a built-in battery type illumination light supply unit having a battery for turning on the built-in light source lamp 32, which has been described in detail with reference to FIG. is there.

The second illumination light supply unit 130 is plugged into a commercial AC power supply of, for example, 100 V (or 200 V), and the AC current thereof is suitable for lighting the built-in light source lamp 32, for example, a DC of 3 V. It is an AC / DC conversion type illumination light supply unit having an AC / DC converter 180 for converting the voltage and outputting the voltage.

This AC / DC conversion type illumination light supply unit 130
With the use of, the endoscopy can be performed in a general hospital room without worrying about interruption of the endoscopy due to battery exhaustion.

The third illumination light supply unit 230 has a connection connector 280 connected to an external DC power source (not shown), and the built-in light source lamp 32 is turned on by the external DC power source. It is a DC power supply type illumination light supply unit.

This external DC power supply type illumination light supply unit 2
If 30 is used, endoscopy can be performed outdoors or in a disaster area. If, for example, an adapter that is inserted into a socket of an automobile cigarette lighter is used as the connection connector 280, a large-capacity storage battery can be used as a power source, and the power source can be easily charged. In that case, DC / DC
A DC voltage may be stepped down to, for example, 3 volts by connecting a converter or the like.

The illumination light supply unit 330 at the bottom makes the illumination light emitted from a high-intensity light source lamp (not shown) built in the external light source device 300 incident on the light guide cable 332 to make a light guide. Illumination light is transmitted via the cable 332 to the light guide fiber bundle 9 of the endoscope.
Is a light guide cable type illumination light supply unit 330 which is adapted to be transmitted to the light guide cable.

If such a light guide cable type illumination light supply unit 330 is used, it is possible to obtain a sufficient brightness from the external light source lamp which is significantly brighter than the built-in light source lamp 32 by using a general endoscope light source device. Illumination light can be obtained.

[0073]

According to the present invention, as the illumination light supply unit, not only the built-in battery type unit but also the AC / DC conversion type unit and the light guide cable type unit can be selectively attached to and detached from the operation portion. Even if the power source battery for lighting the lamp is exhausted, the endoscopic examination can be continued without any interruption, and the endoscopic examination can be performed even in a general hospital room.

If an external DC power supply type unit can be further attached and detached as the illumination light supply unit, an endoscopic examination can be performed outdoors or in a disaster area by using an automobile battery or the like. it can.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a connection portion between an endoscope operation unit and an illumination light supply unit according to an embodiment.

FIG. 2 is a cross-sectional view of a battery chamber portion and a cap portion of the illumination light supply unit according to the embodiment.

FIG. 3 is a sectional view taken along line III-III of the embodiment.

FIG. 4 is a cross-sectional view of the cap portion of the illumination light supply unit in the off-state according to the embodiment.

FIG. 5 is a sectional view taken along line VV of the example.

FIG. 6 is a side view of the simplified endoscope apparatus according to the embodiment.

FIG. 7 is a rear view of the simplified endoscope apparatus according to the embodiment.

FIG. 8 is a rear view of the simplified endoscope apparatus in a state where the AC / DC adapter of the embodiment is connected.

FIG. 9 is a schematic view showing an illumination light supply unit that can be used by selectively connecting it to the operation unit of the endoscope of the embodiment.

[Explanation of symbols]

 30 Built-in battery type illumination light supply unit 130 AC-DC conversion type illumination light supply unit 230 External DC power source type illumination light supply unit 330 Light guide cable type illumination light supply unit

 ─────────────────────────────────────────────────── ─── 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 (2)

[Claims] 1. An illumination light supply unit for arranging an incident end portion of an illumination light guide for transmitting illumination light for illuminating an object in an operating portion and for supplying the illumination light to the illumination light guide. In a simple endoscope device detachably provided to the operation section, a built-in battery type unit having a light source lamp and a battery for lighting the light source lamp as the illumination light supply unit, and a light source lamp And an AC / DC conversion unit having an AC / DC converter for obtaining electric power for lighting the light source lamp from a commercial AC power source, and illumination light incident from an external light source lamp via the light guide cable. A light guide cable type unit that is transmitted to a light guide for illumination of an endoscope and can be selectively attached to and detached from the operation section. A simple endoscope device characterized by: 2. An external DC power supply type unit in which the power supply for lighting the built-in light source lamp is obtained from an external DC power supply as the illumination light supply unit can be attached to and detached from the operation section. Simple endoscope device.