JPH11258522A - Endoscope device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress the infiltration of liquid into the inside of an endoscope and the inside of a light source by providing the endoscope device with a sealing means for mutually connecting the insides of an endoscope body and the light source part and sealing these insides from the external. SOLUTION: A battery light source part 3 and an endoscope body 2 of which insides are individually watertightly held are mutually connected through a fixing screw 31. Nine watertight pads 210 are depressed into a connector cover 205 and a connector base 206 depresses a lens holding member 216 arranged on the light source part side into a cylinder body 214. The inside of the body 2 is connected to the inside of the light source part 3 through an air hole 201 and a notch part 219. The insides of the body 2 and the light source part 3 which are mutually connected are held at a watertight state from the external by an O-ring formed on the outer periphery of an inserting cylinder 211.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to an endoscope apparatus.

[0002]

2. Description of the Related Art In general, an endoscope has a main body composed of an operation section and an insertion section inserted into a body or the like. The endoscope is connected to the light source device via a connection means such as a universal cord extending from the operation unit, and transmits light from the light source device to the distal end of the insertion unit by using a light guide fiber to obtain an observation object. I get illumination light to illuminate things.

Conventionally, a so-called light source device-integrated type (battery light source type) endoscope (hereinafter referred to as a battery light source type) is provided in which a compact light source for turning on a lamp using a dry battery as a power source is directly attached to an endoscope operation unit or the like to obtain illumination light. , An endoscope device). This endoscope device is excellent in portability since it is not necessary to connect the endoscope to a large floor-mounted light source device.

[0004] Some endoscopes have a vent hole for checking for water leakage in the operation section so that the endoscope can check for water leakage. When checking for water leaks, a water leak check adapter is attached to the vent cap, and the inside of the endoscope and the water leak check adapter are communicated with each other via the vent cap.

[0005]

A conventional battery light source type endoscope apparatus is disclosed, for example, in Japanese Patent Application No. 9-1142.
As shown in Japanese Patent Publication No. 6, the endoscope and the battery light source are each independently configured to be watertight. Therefore, the used endoscope can be immersed in the disinfectant with the battery light source connected to it, or the endoscope and the battery light source can be individually immersed in the disinfectant separately. If only the endoscope is provided on the endoscope side, even if a check adapter is attached to the ventilation base with the endoscope and battery light source connected, it is possible to check for water leakage only on the endoscope side. Can only do it. That is, to check for water leakage on the battery side,
It is necessary to provide a vent for checking for water leakage on the battery light source side.

However, if the vent hole for checking for water leakage is provided on the battery light source side, the structure on the battery light source side becomes complicated, and the vent hole is formed as a protruding portion on the battery light source. May hinder operation. In addition, it is necessary to check for water leakage of both the endoscope and the battery light source, which is very troublesome.

In a general endoscope, internal watertightness with respect to the outside is ensured in a state where no attachment parts such as a battery light source are attached. Therefore,
Generally, the user does not feel any resistance to immersing the endoscope alone in the drug solution. Therefore, a communication path is formed which is always in communication with each of the endoscope and the battery light source, and when the endoscope and the battery light source are each in a single state, they are not watertight and when the two are connected to each other, the insides of the two are mutually connected. In the configuration in which the endoscope is immersed alone (with no battery light source connected) in the chemical solution by the configuration in which the medical solution is held in a watertight manner to the outside while being connected to the outside, the chemical solution passes through the ventilation path. Invading the endoscope, causing electrical and mechanical failures.

[0008] The present invention has been made in view of the above circumstances, and an object thereof is to use only a vent provided on the endoscope side to prevent water leakage from both the endoscope and the battery light source. The check can be performed, and the endoscope is immersed in the liquid in any state of the endoscope alone, the battery light source alone, and the state in which the endoscope and the battery light source are connected to each other. An object of the present invention is to provide an endoscope apparatus in which liquid does not enter the inside and the inside of the battery light source.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides an endoscope body having an insertion section in which a light guide fiber is disposed over the entire length, and a detachably attached endoscope body. A light source unit having a lamp for supplying light to an incident end of the light guide fiber and a battery for supplying electricity to the lamp, and transmitting light from the light source unit to the distal end of the insertion unit by the light guide fiber. In the endoscope apparatus which obtains illumination light for illuminating the observation target by the above, an endoscope apparatus is provided so as to communicate with the inside thereof, and an adapter for checking water leakage of the endoscope apparatus is attached. In a state where the vent cap, the endoscope main body and the light source section are not connected, the inside of each of the endoscope main body and the light source section is individually sealed to the outside, and the endoscope main body and the light source section are not connected. In a state where a source unit is connected, characterized by comprising a sealing means for sealing the interior of both of them with respect to the outside together with communicating the interior of the inner and the light source unit of the endoscope body to each other.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 5 show a first embodiment of the present invention. As shown in FIG. 1, an endoscope apparatus 1 according to the present embodiment includes an endoscope main body 2 and a portable-type battery light source unit 3. The endoscope main body 2 includes an insertion section 5 and an operation section 4 connected to a base end of the insertion section 5. At the base end of the insertion portion 5, a rubber stopper 100 for preventing buckling of the insertion portion 5 is provided. The operation unit 4
An eyepiece 6, a treatment instrument insertion port 7, a bending operation knob 8, and a vent cap 101 for checking a water leak of the endoscope main body 2 are provided. The side of the operation unit 4 has a battery light source unit 3
Is provided with a light guide connector section 9 which is detachably connected.

As shown in FIG. 2A, the light guide connector section 9 in the present embodiment has a connector base 202 having a vent 201 communicating with the inside of the endoscope main body 2.
A connector cover 205 whose end is water-tightly fixed to the connector base 202 by an O-ring 203 and a screw portion 204, a connector base 206 fitted into the connector base 202, and slidable into the connector cover 205. , A light guide fiber 12 and a conical fiber 1 inserted in a connector base 206 and fixed by screws 11.
4. As shown in FIG. 3, the first watertight pad 210 holds the connector cover 2 by the urging force of the first spring 209 in a state where the battery light source unit 3 is not connected to the light guide connector unit 9.
The end of the endoscope body 2 is kept watertight by being abutted against the flange portion 207 of the connector 05 and the flange portion 208 of the connector base 206.

The light guide fiber 12 is formed by seven bundled plastic fibers.
A plastic fiber having a high numerical aperture (NA) with a wire diameter of φ0.25 mm to φ0.5 mm is used.
As shown in (1), the wires are expanded in the radial direction by heat after being inserted into the connector base 206, so that the seven wires are bundled by the light guide base 10 in close contact.
That is, the wires are bundled in a state where there is almost no gap between the wires. The incident end face of the light guide fiber 12 is polished to eliminate irregularities so that light can enter without loss.

The conical fiber 14 has a conical shape and is arranged on the incident end face of the light guide fiber 12. In this case, the conical fiber 14 has its small-diameter end face aligned with the incident end face of the light guide fiber 12. Both the light guide fiber 12 and the conical fiber 14 are fixed in the same member, in this embodiment, in the connector base 206 as described above. Therefore, there is almost no displacement.

The conical fiber 14 is a single fiber having a core portion and a clad portion, and the size of the small diameter end face of the core portion is set substantially equal to the size of the incident end face of the light guide fiber 12. The large-diameter end face of the core portion is arranged so as to face a lamp 18 provided inside the battery light source portion 3 connected to the light guide connector 9.

FIG. 5 shows a distal end surface of the insertion portion 5 of the endoscope main body 2. As can be seen from this figure, the distal end of the insertion portion 5 is formed of a distal end component 21 made of metal. The insertion section 5 contains an image fiber (not shown), a light guide fiber 12, and a channel tube (not shown). The image guide fiber is formed by bundling a plurality of fiber strands, the base end of which is connected to the eyepiece 6, and the distal end of which is fixed to the distal end member 21. An objective lens 22 is provided at the tip of the image guide fiber. The objective lens 22 is adhered and fixed to the distal end member 21 with a translucent adhesive.

The light guide fibers 12 bundled in the light guide connector section 9 are arranged in the operating section 4 and the insertion section 5 in a state of being divided into strands as shown in FIG. The front end portion (output end portion) is fixed to the front end component 21. Light guide fiber 1
2 are required to be bundled together in the light guide connector 9 in order to efficiently receive the light from the lamp 18, but rather are bundled together in the insertion portion 5 rather than being bundled together. It is more advantageous to divide the wires in units of wires as in the present embodiment, since more wires can be inserted in space.

The channel tube has a proximal end connected to the treatment instrument insertion port 7 and a distal end connected to a channel pipe 23 fixed to a distal end component 21. Since the light guide fiber 12 is made of a very thin element wire (φ0.25 mm to φ0.5 mm) as described above, it is necessary to form a hole in the tip component 21 for individually inserting these elements. Is difficult. Therefore, in this embodiment, the light guide fiber 12 and the channel pipe 23 are inserted and fixed in the same hole 70 provided in the distal end component 21, and the translucent adhesive 24 is provided in the gap. Is filled. According to this configuration, the workability of the distal end component 21 is improved. Further, in order to protect the tip of the light guide fiber 12, a light-transmitting adhesive is also applied to the tip surface of the light guide fiber 12.

As shown in FIG. 1, a lamp 18 and a battery 25 such as a dry battery or a rechargeable battery for supplying power to the lamp 18 are provided inside the battery light source unit 3. The lamp 18 and the battery 25 are covered and protected by a case body 29 and a battery cover 34. The battery cover 34 is
It is attached to the case main body 29 in a watertight manner by a ring or the like. Further, the battery light source unit 3 is provided with an ON / OFF switch unit 35 for controlling lighting of the lamp 18.

As shown in FIG. 2, the battery light source unit 3
An insertion tube 211, a tube body 214 watertightly fixed to the insertion tube 211 by an O-ring 212 and a screw portion 213.
And a second watertight pad 2 adhesively fixed to the insertion tube 211.
15, a lens holding member 216 slidably disposed in the tube main body 214, a convex lens 217 water-tightly fixed to the lens holding member 216, and an O-ring 218 provided on the outer periphery of the insertion tube 211. have.

The cylinder main body 214 is formed on the case main body 29. A fixing screw 31 is rotatably provided on the outer periphery of the cylinder main body 214. The fixing screw 31 connects the battery light source unit 3 to the endoscope main body 2 by being screwed into a screw unit 32 provided in the light guide connector unit 9. The base end 33 of the insertion tube 211 is connected to the tube main body 2.
It also serves as a flange portion for preventing the fixing screw 31 from coming off from the cover 14. As shown in FIG. 3, the lens holding member 216 abuts against the second watertight pad 215 by the urging force of the second spring 221 in a state where the battery light source unit 3 is not connected to the light guide connector unit 9. Thus, the inside of the battery light source unit 3 is kept watertight. As shown in detail in FIG. 2B, a notch 2 for allowing air to flow between the endoscope main body 2 and the battery light source 3 at the periphery of the lens holding member 216 as shown in detail in FIG.
19 are formed. The convex lens 217 converts the light from the lamp 18 into spot light having a certain size. Further, the O-ring 218 enables a watertight connection between the endoscope main body 2 and the battery light source unit 3.

The size of the large-diameter end face of the conical fiber 14 is set slightly larger than the size of the spot light from the lamp 18.

As described above, the operation unit 4 of the endoscope main body 2
Is provided with a vent cap 101. When the check adapter 220 is attached to the ventilation base 101 at the time of the water leakage check, the inside of the endoscope main body 2 and the water leakage check adapter 220 communicate with each other via the ventilation base 101.

Next, the operation of the endoscope apparatus 1 having the above configuration will be described.

When using the endoscope apparatus 1, first, the battery light source section 3 is connected to the light guide connector 9 of the endoscope body 2. In this connection state (the state of FIG. 2), when the switch unit 35 is turned on to turn on the lamp 18, the lamp 18
The light generated from the filament 26 of the convex lens 217
As a result, a spot light having a certain size is incident on the large-diameter end surface of the conical fiber 14 provided in the light guide connector 9 of the endoscope body 2 (see FIG. 2). That is, the light generated from the filament 26 of the lamp 18 is converted into substantially parallel light or spot light (light having a small NA) at a small angle with respect to the optical axis by the convex lens 217 and is incident on the large-diameter end face of the conical fiber 14. I do. At this time, the large-diameter end face of the conical fiber 14 is
The light generated from the lamp 18 is incident on the conical fiber 14 without any loss because it is slightly larger than the size of the spot light from the light source. Therefore, the thin light guide fiber 12
Is used (the area of the incident end face of the light guide fiber 12 is small), the positioning accuracy of the lamp 18 is poor, and the lamp 18 is positioned with respect to the central axis of the conical fiber 14.
Even if the center axes of the above are slightly displaced, little light loss occurs.

The spot light incident on the large-diameter end face of the conical fiber 14 is reflected at the boundary between the core and the clad of the conical fiber 14 and is a light having a large angle with respect to the optical axis (a light having a large NA). ), And is transmitted to the small-diameter side end face of the conical fiber 14, and is incident on the incident end face of the light guide fiber 12 having substantially the same size as the small-diameter side end face. At this time, the incident end face of the light guide fiber 12 and the small-diameter end face of the conical fiber 14 are accurately positioned in the common connector base 206, the light guide fiber 12 has a high NA, and the light guide fiber 12 Since there is almost no gap between the lines, the light transmitted by the conical fiber 14 is transmitted to the light guide fiber 12 without any loss. In addition, since light is transmitted without loss, unnecessary heat is not generated.

The NA of the small diameter end face of the conical fiber 14 is, for example, 0.55 and the light guide fiber 12
Is smaller than 0.5, the light transmitted through the conical fiber 14 cannot be all incident on the light guide fiber 12. That is, light that enters the light guide fiber 12 at a large incident angle is reflected by the end face of the light guide fiber 12 and is not transmitted through the light guide fiber 12.
Therefore, in the present embodiment, the NA of the light guide fiber is set to be larger than that of the small diameter side end face of the conical fiber 14. That is, the conical fiber 1
If the NA of the small diameter side end face of No. 4 is, for example, 0.55, the NA of the light guide fiber is set to 0.55 or more.
The light transmitted by the light guide fiber 12 is finally emitted from the distal end of the insertion section 5 and becomes illumination light.

Further, when the battery light source unit 3 is not connected to the light guide connector unit 9, the first watertight pad 210 is biased by the first spring 209 so that the flange 207 of the connector cover 205 and the connector base 206 (See FIG. 3). Therefore, the inside of the endoscope main body 2 is kept watertight. On the other hand, in the battery light source 3, the lens holding member 216 is abutted against the second watertight pad 215 by the urging force of the second spring 221 in a state where the lens holding member 216 is not connected to the light guide connector 9. (FIG. 3
reference). Therefore, the inside of the battery light source unit 3 is kept watertight.

As described above, when the battery light source unit 3 and the endoscope main body 2 whose insides are individually kept watertight are connected to each other via the fixing screw 31, the insertion tube 211 of the battery light source unit 3 is lighted. The first watertight pad 210 on the guide connector section 9 side is pushed into the connector cover 205, and the connector base 206 pushes the lens holding member 216 on the battery light source section 3 side into the cylinder main body 214. Therefore, the inside of the endoscope main body 2 and the inside of the battery light source unit 3 communicate with each other through the vent 201 and the cutout 219. Moreover, the endoscope main body 2 and the inside of the battery light source section 3 are kept in a watertight state with respect to the outside while the inside of the endoscope body 2 and the battery light source section 3 are communicated by the O-ring 218 provided on the outer periphery of the insertion tube 211. In the connection state between the endoscope main body 2 and the battery light source section 3, light from the lamp 18 becomes a spot light having a certain size through the convex lens 217 and is incident on the large-diameter side end face of the conical fiber 14 well. So that the convex lens 217 is positioned.

In a state where the endoscope main body 2 and the battery light source section 3 are connected, the vent cap 1 of the operation section 4 of the endoscope main body 2 is connected.
01, the endoscope apparatus 1 is immersed in water, and the inside of the endoscope apparatus 1 is further pressurized through the water leak check adapter 220, whereby the endoscope body 2 Not only a water leak check but also a water leak check of the battery light source unit 3 can be performed at the same time.

When performing gas sterilization with a negative pressure stroke in the sterilization chamber during the ETO sterilization, a ventilation cap 222 is attached to the ventilation mouthpiece 101, and a flexible portion of the endoscope apparatus 1, for example, insertion. The rupture of the outer tube 223 of the curved portion provided near the distal end of the portion 5 is prevented.

As described above, according to the endoscope apparatus of the present embodiment, it is possible to check the water leakage of both the endoscope main body 2 and the battery light source section 3 using the ventilation cap 101. The trouble of checking for water leakage can be greatly reduced. That is, in the configuration of the present embodiment, since the inside of the endoscope body 2 and the inside of the battery light source unit 3 communicate with each other at the time of connection, both the endoscope body 2 and the battery light source unit 3 are Water leak check can be performed, and the trouble of water leak check can be largely saved. Also,
In the present embodiment, it is not necessary to provide a base for checking for water leakage on the side of the battery light source unit 3, so that the battery light source unit 3 is compact, and there is no protrusion that hinders operation. Is also connected.

In addition, when disinfecting a chemical, the endoscope body 2 alone, the battery light source unit 3 alone, and the endoscope main body 2 and the battery light source unit 3 are connected to each other. Even when immersed, the liquid does not penetrate into both of them, so that there is no possibility that the endoscope main body 2 and the battery light source unit 3 are broken down.

Further, in this embodiment, the incident end face of the light guide fiber 12 and the small-diameter end face of the conical fiber 14 are accurately positioned in the common connector base 206, and the light guide fiber 12 has a high NA. In addition, since there is almost no gap between the wires of the light guide fiber 12, the light transmitted by the conical fiber 14 is transmitted through the light guide fiber 12 without any loss. Further, when the light guide fiber 12 has a high NA as described above, the distal end of the insertion portion 5 (accurately,
Even if the illumination lens is not arranged at the light guide fiber 12), a wide angle of illumination light can be obtained. This effect can be obtained when the light guide fiber 12 is disposed in the operating section 4 and the insertion section 5 in units of individual wires as in the present embodiment, or at the end of the light guide fiber (output end). This is particularly beneficial when it is difficult to arrange the illumination lens at the tip of the light guide fiber, such as when the light source does not have a circular shape.

Further, in the endoscope apparatus 1 of the present embodiment, since the light guide fibers 12 are disposed in the operation section 4 and the insertion section 5 in units of individual wires, The area can be used effectively.

Further, in the endoscope apparatus 1 of the present embodiment, the light guide fiber 12 and the channel pipe 23 are inserted and fixed in the same hole 70 provided in the distal end component 21. Therefore, the light guide fiber 1
Since it is not necessary to form a plurality of holes in the distal end component 21 for individually inserting the two element wires, workability of the distal end component 21 is improved.

In the present embodiment, the conical fiber 14 does not need to be a single fiber, but may be a bundle type in which a plurality of fiber strands are bundled. Further, the light guide fiber 12 is not limited to a plastic fiber, but may be a bundle of multi-component glass fibers. Although the channel tube is fixed to the distal end component 21 via the channel pipe 23, the channel tube may be directly fixed to the distal end component 21 without passing through the channel pipe 23.

Further, in the present embodiment, the air vent 10
1 is provided on the endoscope main body 2, but is not limited thereto.
The vent cap 101 may be provided in the battery light source unit 3, and may not be provided in the endoscope main body 2. Further, a vent hole 101 is provided on both the endoscope body 2 and the battery light source portion 3 so that a water leak check can be performed on each of them alone, and when both are connected, a water leak check can be performed from either vent hole member. It may be configured as follows.

Next, another configuration example of the endoscope apparatus will be described with reference to FIGS. The endoscope apparatus 1a shown in these figures includes a battery light source unit 3 and an endoscope body 2
Are not separate bodies, and the battery light source unit 3 is built in the endoscope main body 2.

As shown in FIG. 7A, the endoscope 1
The battery light source unit 3a is detachably mounted on a fixing member 390 fixed to the endoscope main body 2 and a lamp unit mounting portion 301 formed on the fixing member 390, and the lamp 3
02, a lamp unit 303 for supplying electricity to the lamp unit 303, and a cover member 305 covering the lamp unit 303 and the battery 304. The cover member 305 is
It comprises a cover body 350 and a conductive member 316. The cover body 350 is formed of a chemical-resistant plastic material, and is provided with an O-ring 30 on a flange portion 391 a provided on a housing 391 of the operation section 4 of the endoscope body 2.
6 are mounted in a watertight manner. Also, the conductive member 3
16 is formed as a cylindrical member disposed on the inner peripheral surface of the cover main body 350 and is mechanically and electrically connected to a cover member mounting portion 307 formed at an end of the fixing member 390 by screws. ing. Thereby, the conductive member 31
6 is electrically connected to a later-described contact screw portion 312 of the lamp unit 303 via the cover member mounting portion 307 and the lamp unit mounting portion 301. In the same manner as in the first embodiment, the conical fiber 14 and the light guide fiber 12 are arranged on the lamp unit mounting portion 301 so as to face the lamp 302.

The lamp unit 303 includes a filament (not shown) and a bulb portion 30 having a convex lens at the tip.
8, a lamp unit grip 309 on the proximal end gripped when the lamp unit 303 is attached and detached, and electricity provided to protrude from the proximal end of the grip 309 and in direct contact with the first contact 310 of the battery 304. A proximal contact part 311 as a contact part and a contact screw part 312 as an electric contact part screwed into the lamp unit mounting part 301 of the endoscope body 2
And is constituted by.

The lamp unit 303 is provided with an O-ring 313. The O-ring 313 prevents the liquid from entering the lamp unit mounting section 301 even when the liquid is applied to the endoscope apparatus 1a without the cover member 305, and increases the amount of rotational force to increase the lamp power. This prevents the contact screw part 312 of the unit 303 from loosening naturally from the lamp unit mounting part 301.

On the cover member 305 side, a battery 304
A spring contact 315 made of an elastic metal is provided in contact with the second contact portion 314. This spring contact 315
A switch mechanism 317 provided on the cover member 305 electrically connects and disconnects the conductive member 316.

FIG. 7B is a view of the switch mechanism 317 as viewed from the battery 304 side. As shown, the switch mechanism 317 includes a switch operation unit 318 rotatably provided outside the base end of the cover body 350, and a switch operation unit 31 provided on a rotation shaft of the switch operation unit 318.
O-ring 31 for maintaining watertightness between cover member 305 and cover member 305
9 and the spring contact 31 interlocked with the switch operation unit 318.
5, a leaf spring 320 electrically connected to the cover member 305, extending from the base end of the conductive member 316 toward the inside of the cover member 305, and
A conductive protruding portion 321 that contacts the switch operating portion 318
And an insulating member 322 that comes into contact with the leaf spring 320 when the switch is OFF.

The plate spring 320 has a small hemispherical projection 32.
4 are provided, and this projection 324 is
1 and a small hemispherical hole 325 provided in the insulating member 322, so that the switch
A click feeling can be obtained at the time of operation (ON / OFF). In order to prevent the switch operation part 318 from rotating more than necessary, the insulating member 322 is provided with locking parts 326 and 326 for regulating the rotation amount of the switch operation part 318.

FIG. 8 shows a procedure for assembling the endoscope apparatus 1a having the above configuration. As shown, the assembly is
Lamp unit mounting portion 30 provided on endoscope body 2 side
1 is completed by screwing the lamp unit 303 into the cover member 1 and attaching the cover member 305 with the battery 304 dropped therein to the cover member mounting portion 307.

In the endoscope apparatus 1a having such a configuration, when the switch operation section 318 is rotated in the ON direction,
Via the conductive member 316, the cover member mounting portion 307, and the lamp unit mounting portion 301, the contact screw portion 312 of the lamp unit 303 and the second contact 314 of the battery 304 are provided.
Are electrically connected, and the lamp 302 is turned on. Light emitted from the lamp 302 is emitted as illumination light from the distal end of the insertion section 5 of the endoscope main body 2 via the conical fiber 14 and the light guide fiber 12 as in the first embodiment.

As described above, the endoscope apparatus 1a having the above configuration is very lightweight, compact, and has good operability. Also, it can be manufactured at low cost. Furthermore, a watertight structure can be achieved with a relatively small amount of sealing material. Conventionally, an endoscope apparatus of a battery light source type is disclosed in Japanese Patent Application No. Hei 9-114.
As shown in Japanese Patent Publication No. 26, a lamp, a battery, and a switch are provided inside, and a battery light source is separate from an endoscope main body. In addition, the battery light source unit is inevitably sized and weighed to a certain extent due to its structure, which may hinder the operation. In addition, there is a problem that the number of parts becomes very large and the cost becomes high. Further, in order to form a watertight structure, a large number of sealing materials are required at the battery light source portion and the battery light source portion connection portion of the endoscope main body, and there is a problem that the structure becomes considerably complicated. However, according to the endoscope apparatus 1a of the present embodiment, all of the conventional problems are solved.

FIG. 9 shows a modification of the endoscope 1a shown in FIGS. As shown, a pin 327 is provided upright on the cover member mounting portion 307, and a cutout portion 328 for guiding the pin 327 is provided on the cover member 305.

An elastic body 329 is provided inside the cover member 305 (specifically, the conductive member 316). When the pin 327 is engaged with the engaging portion 330 at the end of the cutout portion 328 in order to attach the cover member 305 to the cover member attaching portion 307, the elastic member 329 forms an end of the cover member attaching portion 307. Part, and the elastic force prevents the pin 327 from coming off from the locking part 330,
The cover member 305 is fixed to the cover member mounting portion 307. The elastic body 329 also serves as a sealing material for keeping the space between the cover member 305 and the cover member mounting portion 307 watertight. Further, the conductive member 316 and the cover member mounting portion 307
Alternatively, the pin 327 is electrically connected.

According to this configuration, the switch operation unit 318
ON / OFF position is always a fixed position with respect to the operation unit 4 of the endoscope main body 2.

FIGS. 10 and 11 show a second embodiment of the present invention. In the endoscope apparatus of the present embodiment, an endotracheal tube fixing tool 401 is detachably attached to the endoscope main body 2, and the other configuration is exactly the same as that of the first embodiment. Therefore, in the following, the endotracheal tube 405 and the endotracheal tube fixture 401 will be described.
Will be described only.

As shown in FIG. 10, a tubular endotracheal tube fixture 401 entirely made of rubber is detachably attached to the insertion portion 5 of the endoscope main body 2. As shown in detail in (a) of FIG. 11, the endotracheal tube fixing tool 401 is configured such that an endoscope mounting section 402 mounted on the insertion section 5 of the endoscope main body 2 and an endotracheal tube 405 are detachably mounted. And an endotracheal tube mounting portion 403.

As shown in FIG. 11B, the insertion section 5 of the endoscope main body 2 is provided on the side of the endotracheal tube fixture 401.
(Slit) 40 that opens with a width smaller than the diameter of
4 are formed over the entire length. Endoscope mounting part 40
2 is a hole having a diameter slightly smaller than the diameter of the insertion portion 5. The endotracheal tube mounting section 403 is a
The connection adapter 405 (see FIG. 11C) has a tapered hole corresponding to the truncated cone shape. That is,
The diameter of the endotracheal tube mounting portion 403 decreases toward the rear side in accordance with the shape of the connection adapter 406 tapering toward the end.

In this configuration, the frictional force between the endoscope mounting section 402 and the insertion section 5 of the endoscope main body 2 causes the tracheal tube mounting section 403 and the connection adapter 406 of the endotracheal tube 405 to be connected. The shape of the endoscope mounting portion 402 and the endotracheal tube mounting portion 403 is set so as to be larger than the frictional force between the endoscope and the endotracheal tube mounting portion 403. Tool 40
1 does not slip on the insertion portion 5 of the endoscope main body 2.

When attaching the endotracheal tube fixture 401 to the insertion section 5 of the endoscope body 2, the slit 4 is formed by elastically deforming the endotracheal tube fixture 401.
The opening width of the opening 04 is widened, and the endoscope mounting section 402 is mounted on the insertion section 5 of the endoscope main body 2. Subsequently, the endotracheal tube 40
When attaching 5 to the endotracheal tube fixture 401, the connection adapter 406 of the endotracheal tube 405 is connected to the endotracheal tube mounting part 403. In this case, since the endotracheal tube attachment portion 403 is formed in a tapered shape, the truncated conical connection adapter 406 is smoothly attached to the endotracheal tube attachment portion 403.

After the endotracheal tube 405 is covered with the insertion section 5 of the endoscope main body 2 in this way, the insertion section 5 is inserted into the patient's trachea. Then, when the distal end of the insertion section 5 is inserted into the trachea, the endotracheal tube 405 is detached from the endotracheal tube fixture 401 and slid toward the distal end of the insertion section 5. When the endotracheal tube 405 is completely inserted into the trachea, the endotracheal tube 405 is left as it is, and only the insertion section 5 is pulled out of the patient. This completes the endotracheal intubation.

As described above, the endoscope apparatus according to the present embodiment is useful when performing endotracheal intubation using the endoscope main body 2 and reliably connecting the endotracheal tube to the endoscope insertion portion. Can be attached to In particular, since the endotracheal tube fixing tool 401 can be easily attached to and detached from the insertion section 5 of the endoscope main body 2, when endotracheal intubation is not performed (general application other than endotracheal intubation, for example, bronchial examination) If it is removed from the insertion portion 5, it does not get in the way. Further, since the endotracheal tube fixing tool 401 is made of rubber, the endoscope mounting section 40
2 does not damage the flexible insertion portion 5. Therefore, the present invention can be used not only for an endoscope having a hard or semi-soft insertion portion but also for an endoscope having a hard insertion portion. Further, since the endotracheal tube fixing tool 401 can be fixed at an arbitrary position of the insertion section 5, the endotracheal tube fixing tool 401 can be fixed at a position corresponding to the length of the endotracheal tube 405.

FIG. 12 shows a first modification of the endotracheal tube fixture. As shown in the figure, the endotracheal tube fixing tool 401a includes an endoscope mounting portion 402 made of rubber and an endotracheal tube mounting portion 403 made of plastic, and the endoscope mounting portion 402 and the endotracheal tube mounting portion. 403
And are separate. The other configuration is the same as that of the fourth embodiment.

According to this configuration, the frictional force between the endoscope mounting section 402 and the insertion section 5 of the endoscope main body 2 and the connection between the endotracheal tube mounting section 403 and the connection adapter 406 of the endotracheal tube 405 are increased. The difference between the endotracheal tube 405 and the endotracheal tube fixing device 401a is increased when the endotracheal tube 405 is detached from the endotracheal tube fixing device 401a.
The possibility that 1a is shifted on the insertion portion 5 of the endoscope main body 2 is further reduced.

FIG. 13 shows a second modification of the endotracheal tube fixture. As shown in the figure, the endotracheal tube fixing tool 401b is made of rubber and has a tubular endoscope mounting portion 4b.
02, and a tubular endotracheal tube mounting portion 403 made of plastic, and the endoscope mounting portion 402 and the endotracheal tube mounting portion 403 are separate bodies. In addition, the endotracheal tube mounting section 403 has a plurality of cutouts 407, and has a projection 408 on the inner peripheral surface of the end.
A projection 408 is provided on the outer peripheral surface of the endoscope mounting section 402.
And a concave portion 409 that engages with the ridge. The inner diameter of the endotracheal tube mounting section 403 is set slightly smaller than the outer diameter of the endoscope mounting section 402. In addition, a slit (slit) 404 that opens with a width smaller than the diameter of the insertion section 5 of the endoscope main body 2 is formed on the side surface of the endoscope mounting section 402 over the entire length.

The endotracheal tube fixture 4 having such a configuration
When the endoscope 01b is attached to the insertion section 5 of the endoscope main body 2, first, the opening width of the slit 404 is increased by elastically deforming the endoscope mounting section 402, so that the endoscope mounting section 402 can be viewed through the endoscope. It is attached to the insertion section 5 of the mirror body 2. continue,
The endotracheal tube mounting section 403 is inserted from the distal end of the insertion section 5 of the endoscope main body 2 and pushed into the endoscope mounting section 402 to be mounted. This state is shown in FIG.

According to this configuration, the elastic force of the endoscopic tube mounting section 403 made of plastic is applied to the insertion section 5 together with the elastic force of the endoscope mounting section 402 made of rubber. The difference between the frictional force between the endoscope body 2 and the insertion portion 5 and the frictional force between the endotracheal tube mounting portion 403 and the connection adapter 406 of the endotracheal tube 405 is further increased. When the 405 is detached from the endotracheal tube fixing tool 401b, the possibility that the endotracheal tube fixing tool 401b shifts on the insertion section 5 of the endoscope main body 2 is further reduced.

FIG. 14 shows a third modification of the endotracheal tube fixture. As shown in the drawing, in the present modified example, a locking portion 410 for locking the endotracheal tube fixing tool 401c is provided on the bending preventing portion 100 of the insertion portion 5 of the endoscope main body 2. Further, the endoscope mounting portion 402 of the endotracheal tube fixing tool 401c is provided with a groove 411 that engages with the locking portion 410.

According to this configuration, the endotracheal tube 405
When the tube is removed from the endotracheal tube fixing tool 401c, the endotracheal tube fixing tool 401c does not slip on the insertion section 5 of the endoscope body 2. In this modification, the rubber endoscope mounting portion 402 and the rubber endotracheal tube mounting portion 403 are integrated, but the endoscope mounting portion 402 is made of rubber and has a tracheal tube mounting portion. The section 403 may be made of plastic, and the endoscope mounting section 402 and the endotracheal tube mounting section 403 may be separate bodies.

FIG. 15 shows a fourth modification of the endotracheal tube fixture. As shown in FIG.
4 is provided on the operation unit 4 of the endoscope main body 2. Other configurations are the same as those of the third modification.

According to the above-described technical contents, the following various configurations can be obtained. 1. A light guide fiber for guiding illumination light from the light guide connector to the distal end of the endoscope, a suction and treatment instrument insertion channel, and an endoscope apparatus having a distal end component made of, for example, metal; An endoscope apparatus, wherein a channel pipe connected to a channel and a light guide fiber are fixed in the same hole of the distal end member.

2. An endoscope body having a light guide fiber for guiding illumination light from the light guide connector to the end of the endoscope, and a vent cap for confirming water leakage from the endoscope exterior to the inside; and the light guide connector An endoscope apparatus having a lamp for supplying light to the light guide fiber incident end therein, and a battery light source unit having a battery for supplying electricity to the lamp. When the endoscope main body and the battery light source unit are each in a single state, the endoscope main body and the battery light source unit are each configured to be watertight. In a connected state, the endoscope main body and the battery light source unit have communication means for communicating with each other. Wherein the entire endoscope apparatus is configured to be watertight.

3. An endoscope body having a light guide fiber for guiding illumination light from the light guide connector to the end of the endoscope; a lamp for supplying light to the light guide fiber incident end; and a lamp for supplying electricity to the lamp. In the endoscope apparatus having a battery, the endoscope apparatus has a lamp unit having the lamp, and a cover member that covers the lamp unit and the battery in a watertight manner. A battery unit provided with a lamp unit mounting portion that can be mounted so that the lamp unit faces the light guide fiber incident end, and a cover member mounting portion that can be mounted with the cover member in a watertight manner. Endoscope device with built-in light source.

4. The lamp unit is provided at a front bulb portion, near a center portion or a rear end portion, and is provided at a rear end portion of a lamp unit grip portion to be gripped when the lamp unit is attached and detached, and a first contact portion of a battery. A lamp unit first electrical contact portion that is in direct contact with the lamp unit, and a lamp unit second that is provided at a contact portion between the lamp unit mounting portion of the endoscope body and is electrically connected to the second contact portion of the battery. 4. The endoscope apparatus according to claim 3, comprising an electric contact portion.

5. On the inner bottom surface of the cover member, a spring contact made of an elastic metal that is in contact with the second contact portion of the battery and is electrically connected to the lamp unit second electric contact portion is provided. 4. The endoscope apparatus according to claim 3, wherein 6. The lamp unit according to claim 3, wherein the lamp unit is configured to be screwed and fixed to the lamp unit mounting portion, and the screw portion also serves as a lamp unit second electrical contact portion. Endoscope device.

7. ON / O of the lamp on the cover member
4. The endoscope apparatus according to claim 3, further comprising a switch unit that controls the FF. 8. The switch section is interlocked with a switch operation section rotatably provided on the outer bottom surface of the cover member, watertight means provided between a shaft of the switch operation section and the cover member, and the switch operation section. A leaf spring member electrically connected to a spring contact provided on the inner bottom surface of the cover member; and a leaf spring member that contacts the leaf spring member when the switch is turned on, and electrically contacts the lamp unit second electrical contact portion. 18. The endoscope apparatus according to claim 17, wherein the endoscope apparatus is constituted by a conductive member disposed inside the cover member to be connected, and an insulating member that contacts the leaf spring when a switch is turned off.

9. An endotracheal tube inserted into the airway;
An insertion portion capable of externally inserting and removing the endotracheal tube,
In an endoscope apparatus having an endotracheal tube fixture that can be detachably attached near the insertion portion, the endotracheal tube fixture includes an endoscope attachment portion attached near the insertion portion of the endoscope. An endotracheal tube mounting section for detachably mounting an endotracheal tube, wherein the endoscope mounting section is made of an elastic body having a split (slit), and an endoscope insertion section is formed by the elastic force of the elastic body itself. An endoscope device which is attached to a vicinity.

10. The endotracheal tube fixing device is attachable to the endoscope insertion portion, and the frictional force between the endoscope mounting portion and the endoscope insertion portion of the endotracheal tube fixing device is fixed to the endotracheal tube fixing device. 10. The endoscope apparatus according to claim 9, wherein the frictional force is larger than a frictional force between the endotracheal tube mounting portion of the device and the endotracheal tube. 11. 10. The endoscope apparatus according to claim 9, wherein the endotracheal tube fixture is made of an elastic body integrally formed as a whole. 12. The first elastic body is rubber.
2. The endoscope apparatus according to claim 1.

13. 10. The endoscope apparatus according to claim 9, wherein the endotracheal tube fixing device has an endoscope fixing portion and an endotracheal tube fixing portion formed separately. 14． 14. The endoscope apparatus according to claim 13, wherein in the endotracheal tube fixing device, the endoscope fixing portion is made of rubber, and the endotracheal tube fixing portion is made of plastic. 15. 10. The endoscope apparatus according to claim 9, wherein a locking portion for locking the endotracheal tube fixing tool is provided in a part near the endoscope insertion portion.

16. The locking portion is provided on a break prevention portion made of a substantially conical elastic member provided above the insertion portion to prevent the endoscope insertion portion from buckling. Item 15. The endoscope device according to item 15. 17． The endoscope apparatus according to claim 15, wherein the locking portion is provided on an endoscope operation portion for operating the endoscope, which is provided above the fold-preventing portion. . 18. An endoscope body having an insertion portion in which a light guide fiber is disposed over the entire length; a lamp detachably attached to the endoscope body and supplying light to an incident end of the light guide fiber; and supplying electricity to the lamp A light source unit having a battery, and transmitting light from the light source unit to a distal end of the insertion unit by a light guide fiber to obtain illumination light for illuminating an observation target. When the endoscope main body and the light source unit are not connected, the air vent is provided so as to communicate with the inside of the endoscope device and is provided with an adapter for checking the endoscope device for water leakage. The interior of the endoscope main body and the light source are individually sealed to the outside, and when the endoscope main body and the light source are connected, the interior of the endoscope main body and the interior of the light source are separated. And sealing means for sealing the interior of both the external causes through ynylene,
An endoscope apparatus comprising:

19. 19. The endoscope apparatus according to claim 18, wherein the vent cap is provided on the endoscope main body. 20. The endoscope apparatus according to claim 18 or 19, wherein the vent cap is provided in the light source unit. 21. A substantially conical conical fiber having a large-diameter first end face and a small-diameter second end face between the incident end face of the light guide fiber and the light source section. The light guide fiber and the conical fiber are interposed in the same member so as to receive light from the light source unit, and the light guide fiber and the small diameter second end face of the conical fiber are inserted into the same member. 19. The endoscope apparatus according to claim 18, wherein is positioned.

22. The numerical aperture of the light guide fiber is approximately equal to or greater than the numerical aperture of the small-diameter second end face of the conical fiber.
An endoscope apparatus according to the item. 23. 23. The endoscope apparatus according to claim 22, wherein the light guide fiber has a numerical aperture of 0.55 or more.

[0079]

As described above, according to the endoscope apparatus of the present invention, water leakage check of both the endoscope and the battery light source can be performed only by using the vent cap provided on the endoscope side. The endoscope and the battery can be immersed in the liquid in any state of the endoscope alone, the state of the battery light source alone, and the state in which the endoscope and the battery light source are connected to each other. No liquid enters the light source.

[Brief description of the drawings]

FIG. 1A is an overall configuration diagram showing a partial internal structure of an endoscope apparatus according to a first embodiment of the present invention, and FIG.
FIG. 2 is an external view around an operation unit of the endoscope apparatus of FIG.

2A is a cross-sectional view of a portion near a connection between an endoscope main body and a battery light source in the endoscope apparatus of FIG. 1, and FIG. 2B is a lens provided in the endoscope apparatus of FIG. It is a perspective view of a holding member.

FIG. 3 is a cross-sectional view illustrating a state where an endoscope main body and a battery light source unit are separated from the connection state of FIG. 2;

FIG. 4 is a sectional view taken along line AA of FIG. 2;

5 is a front view of a distal end face of an insertion portion of an endoscope main body of the endoscope apparatus of FIG. 1;

FIG. 6 is an overall configuration diagram of the endoscope apparatus.

7A is a cross-sectional view of the endoscope device of FIG. 6 in the vicinity of an operation unit of an endoscope main body having a built-in battery light source unit,
FIG. 2B is a view of a switch mechanism provided in the endoscope apparatus of FIG.

FIG. 8 is an exploded view of the endoscope apparatus of FIG.

FIG. 9 is an exploded view showing a modification of the endoscope apparatus of FIG.

FIG. 10 is an overall configuration diagram of an endoscope apparatus according to a second embodiment of the present invention.

11A is a view showing a state in which an endotracheal tube fixture is attached to the endoscope apparatus of FIG. 10, and FIG. 11B is a state in which the endotracheal tube fixture is removed from the endoscope apparatus of FIG. FIG. 11C is a diagram showing a state in which the endotracheal tube fixture and the endotracheal tube are attached to the endoscope apparatus of FIG. 10.

12A and 12B relate to a first modification of the endotracheal tube fixing device of the endoscope apparatus of FIG. 10, and FIG. 12A is a diagram showing a state where the endotracheal tube fixing device is attached to the endoscope device; () Is a diagram showing a state in which the endotracheal tube fixture is removed from the endoscope device.

13A and 13B relate to a second modification of the endotracheal tube fixing device of the endoscope device of FIG. 10, and FIG. 13A is a diagram illustrating a state where the endotracheal tube fixing device is removed from the endoscope device; () Is a diagram showing a state in which the endotracheal tube fixture is attached to the endoscope apparatus.

FIG. 14 is a view showing a state in which the endotracheal tube fixing device is attached to the endoscope device according to a third modification of the endotracheal tube fixing device of the endoscope device of FIG. 10;

FIG. 15 is a view showing a state in which the endotracheal tube fixing device is attached to the endoscope device according to a fourth modification of the endotracheal tube fixing device of the endoscope device of FIG. 10;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Endoscope apparatus 2 ... Endoscope main body 3 ... Battery light source part 101 ... Vent base 201 ... Vent 210, 215 ... Watertight pad 216 ... Lens holding member 219 ... Notch

Claims (1)

[Claims] 1. An endoscope body having an insertion portion in which a light guide fiber is provided over the entire length, a lamp detachably attached to the endoscope body and supplying light to an incident end of the light guide fiber, and a lamp. And a light source unit having a battery for supplying electricity to the endoscope. The endoscope obtains illumination light for illuminating an observation target by transmitting light from the light source unit to the distal end of the insertion unit through a light guide fiber. In the device, a vent cap provided to communicate with the inside of the endoscope device, and an adapter for checking water leakage of the endoscope device is attached, and the endoscope body and the light source unit are connected. When the endoscope main body and the light source are connected, the interior of the endoscope main body and the light source are individually sealed to the outside. The endoscope apparatus characterized by comprising a, and sealing means for sealing against the exterior of the interior of both of them with communicating each other and the internal parts.