JP2000189385A - Endoscope device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To dispose blowing pumps for pressurized air supply releasably in endoscopes, and drive the blowing pumps by means of power sources for illumination lamp lighting. SOLUTION: An end connection 14 internally has an air supply opening 34 and a seepage inspection opening 36, and a unit body 52 accommodates a blowing pump 60, and a battery 61 for powering the blowing pump 60 and an illumination lamp 24. The unit body 52 has on the head face an airline feeding pin 58, an air supply pin 59 for seepage inspection, and lamp electrodes 62a and 62b, all opposed to the air supply opening 34, seepage inspection opening 36, and electric contacts 27a and 27b. Between the airline feeding pin 58 and seepage-inspection air supply pin 59, and the blowing pump 60, a switch cock 63 is interposed to feed pressurized air from the blowing pump 60 into either of the airline feeding pin 58 and seepage-inspection air supply pin 59 in dependence on the operation of a switch lever.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inner endoscope having an illumination lamp and an attachment / detachment unit detachably attached to the endoscope and provided with a battery for supplying power to the illumination lamp. The present invention relates to an endoscope apparatus.

[0002]

2. Description of the Related Art Conventionally, by inserting an elongated insertion portion into a body cavity, it is possible to observe internal organs in the body cavity or to perform various treatments by inserting a treatment tool into a treatment tool channel as necessary. Medical endoscopes are widely used.

In recent years, for example, a battery type light source using a battery such as a dry battery as a power source has been used as a light source device of an endoscope, and the battery type light source is integrally fixed to the endoscope for use. There is a mirror device.

For example, Japanese Patent Application Laid-Open No. Hei 10-201710 discloses an endoscope in which a battery-type light source using a dry battery as a power source is detachably attached to an endoscope operation unit. An endoscope that can be used with such a battery-type light source attached can be used without a power source and is easy to carry, so it is suitable for portable use in emergency or on-site treatment. I have.

[0005] In the endoscope, during observation, a bodily fluid or dirt adheres to an observation window for observation or an illumination window that emits illumination light, which is arranged at the distal end of the insertion portion, and the observation image becomes cloudy. In some cases, a clear observation image cannot be obtained due to insufficient illumination light quantity. In such a case, the endoscope is once pulled out from the examination site to take measures such as wiping body fluid or the like adhering to the distal end of the insertion portion, and then the endoscope is reinserted to perform the examination.

However, by repeatedly inserting and removing the endoscope, the examination and treatment time is lengthened, which places a heavy burden on the operator and the patient. For this reason, even in a portable endoscope device, an air supply device which is an external device used in a general endoscope is brought in, and pressurized air generated by this air supply device is inserted into the endoscope. The body was guided to the tip to blow off body fluids and dirt adhering to the window.

When the used endoscope is washed, a water leak test of the endoscope is performed. At this time, the endoscope and the air supply device are connected using a dedicated air supply tube, and pressurized air is sent into the internal space of the endoscope to confirm that there is no water leakage. I was

[0008]

However, in a portable endoscope device, an air supply device for removing body fluid, dirt, and the like attached to an observation window or an illumination window is separately provided to constitute the endoscope device. In such a case, portability, which is an inherent advantage of the endoscope device, is impaired, and this becomes a factor that hinders portability and mobility.

In addition, when performing a water leak inspection of the endoscope, a dedicated air supply tube must always be carried, and the air supply tube must be connected to the endoscope and the air supply device. Not only the easiness has been impaired, but also the troublesome work has become a problem.

The present invention has been made in view of the above circumstances, and an air supply pump for supplying pressurized air can be provided detachably on an endoscope. The air supply pump is driven by an illumination lamp. It is an object of the present invention to provide an endoscope apparatus which is excellent in portability performed by a power source to be turned on.

[0011]

An endoscope apparatus according to the present invention comprises:
An air supply pipe communicating with the air supply nozzle disposed at the distal end of the insertion section, a water leak inspection pipe communicating with the endoscope internal space, a light guide fiber for guiding illumination light, and a light guide fiber. An endoscope provided with an illumination lamp for supplying illumination light to a light incident end, and a detachable unit in which a battery serving as a power source for the lamp is disposed in a connection base provided in an operation unit of the endoscope is detachably attached. An endoscope device, an electrical contact for electrically connecting the illumination lamp and the battery to a connection base of the endoscope, an air supply port of the air supply pipe, and the water leak inspection pipe. On the other hand, while the pipe opening is arranged, the detachable unit is driven by a battery which is a power supply of the illumination lamp, and pressurized air is supplied to the air supply pipe or the water leak test pipe via a pipe selecting means. Supply air supply pump .

According to this configuration, by providing the detachable unit in the connection base of the endoscope, the power supply to the illumination lamp and the pressurized air are supplied to the air supply pipe or the water leak inspection pipe of the endoscope. The endoscope can be promptly observed while removing the supplied body fluid and dirt attached to the window, and a water leak inspection before washing the endoscope can be easily performed without impairing portability.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 relate to an embodiment of the present invention, FIG. 1 is a diagram illustrating a schematic configuration of an endoscope device, and FIG. 2 is a diagram illustrating a relationship between a detachable unit having an air supply pump and an endoscope. FIG. 3 is a diagram showing the relationship between the pump and the switching cock in the water leak inspection state.

As shown in FIG. 1, the endoscope apparatus 1 according to the present embodiment includes an elongated insertion section 11 and an operation section 12 which also serves as a grip section provided continuously to a base end of the insertion section 11. Endoscope 1
0, a monitor-integrated video processor 40 in which a liquid crystal monitor 41 is detachably disposed at the base end of the operation unit 12, and a detachable unit 50 that is detachably disposed on the side of the operation unit 12. It is mainly composed of

A connection connector 13 is provided at the base end of the operation section 12 for detachably mounting the monitor-integrated video processor 40. The connection section of the operation section 12 is connected to the detachable unit 50. A connection base 14 that is screwed to a rotatable fixing ring 53 with respect to a unit main body 52 that constitutes the unit 51 is provided.

An external thread 1 is provided on the outer peripheral surface of the connection base 14.
4a, and the male screw portion 14a is screwed with a female screw portion (53a in FIG. 2) formed on the inner peripheral surface of the fixing ring 53 of the attachment / detachment unit 50.
The detachable unit 50 is integrally fixed to the unit 2.

The insertion portion 11 of the endoscope 10 includes a distal end portion 15 formed of a hard member in order from the distal end side,
5 and a flexible tube portion 17 which is connected to the rear end of the bending portion 16 and has flexibility to reach the front end of the operation portion 12. I have.

The operating section 12 has a bending lever 18 for bending the bending section 16 to a desired state, a lamp holder 19 for holding an illumination lamp (see reference numeral 24 in FIG. 2), and a lighting state of the illumination lamp. A lamp switch 20 is provided for switching to a light-off state.

On the other hand, inside the unit body 52 of the detachable unit 50, an air supply tube (33 in FIG. 2) and a water leakage inspection pipe (FIG. An air supply pump (reference numeral 60 in FIG. 2) serving as a supply source when supplying pressurized air to the reference numeral 36), and a battery (reference numeral 61 in FIG. 2) such as a dry battery or a storage battery serving as a power supply for the air supply pump and the illumination lamp. ) And is built-in. A drive control switch for switching the air supply pump between a driving state and a stop state is provided on a side portion of the unit main body 52, and the pressurized air generated by the air supply pump is used for the air supply line or water leakage inspection. A switch lever 54 also serving as a conduit selecting means for selectively supplying one from one of the conduits, and an intake opening 55 serving as an air intake of an air supply pump provided in the unit main body 52 are provided. I have.

The range in which the switch lever 54 moves is provided with an operation display character 56 indicating the selected state of "ON", "OFF" and "TEST". Reference numeral 57 denotes a lid that is detachably attached to the base end of the unit main body 52. By removing the lid 57 from the unit main body 52, the battery housed in the unit main body 52 can be replaced. You can do it. further,
From the distal end surface of the unit main body 52, an air supply pipe air supply pin for supplying pressurized air to the air supply pipe indicated by reference numeral 58 and pressurized air is supplied to the water leak inspection pipe indicated by reference numeral 59. A water leak inspection air supply pin for supply is protruding.

Referring to FIG. 2, a specific configuration of the endoscope apparatus 1 including the endoscope 10, the detachable unit 50, and the monitor-integrated video processor 40 will be described. As shown in the figure, an illumination optical system is configured on the distal end surface of the distal end portion 15 of the endoscope 10 of the present embodiment, and an illumination window 21 through which illumination light is emitted toward an observation site, and an observation optical system is configured. The illumination window 21
An observation window 22 on which an optical image obtained by the illumination light emitted from the camera is incident, and an air supply nozzle 23 for ejecting pressurized air toward the observation window 22 and the surface of the illumination window 21 are arranged.

One end surface of a light guide fiber 25 for transmitting illumination light from an illumination lamp 24 held by the lamp holder 19 faces a base end surface of the illumination window 21. The base end of the light guide fiber 25 is gently bent in the operation section 12 so that the base end face 25a, which is the light incident end, is the focal position of the condenser lens 26 disposed in front of the illumination lamp 24. It is fixed to.

A lamp holder 19 for holding the illumination lamp 24 is detachable from the operation unit 12. When the lamp holder 19 is disposed on the operation unit 12, watertightness is ensured. 19 and an electric contact (not shown) of the illumination lamp 24 and the connection base 1
4, a first lead wire 28a extending from a first electrical contact 27a and a second lead extending from a second electrical contact 27b.
The conduction with the lead wire 28b is established.

A lamp contact 20a corresponding to the operation of the lamp switch 20 provided on the operation section 12 is provided in the middle of the first lead wire 28a. For this reason, by operating the lamp switch 20 to switch the lamp contact 20a between the conductive state and the disconnected state, the illumination lamp 24 is turned on or off. When the illumination lamp 24 is turned on, the illumination light emitted from the illumination lamp 24 is condensed on the base end face 25a of the light guide fiber 25 by the condenser lens 26, and is guided through the light guide fiber 25. The light passes through the illumination window 21 and is illuminated toward the observation site.

At the image forming position of the observation window 22, a solid-state image sensor 29 such as a CCD for picking up an optical image of the observation site and photoelectrically converting the optical image into an image signal is arranged. The image signal photoelectrically converted by the solid-state imaging device 29 is
The signal is amplified by an amplifier circuit board 30 located at the stage subsequent to the connector 9 and is output to a signal line 31 extending to the connector 13.

A dummy line 32 for removing noise is connected to the amplifier circuit board 30 in addition to the signal line 31, and this dummy line 32 is also connected to the connector 13 like the signal line 31. Have been.

One end of an air supply tube 33 forming an air supply conduit communicates with the air supply nozzle 23. The other end of the air supply tube 33 communicates with an air supply opening 34 provided as an air supply port in the connection base 14.

In the connection base 14, in addition to the air supply opening 34, a water leak whose one end communicates with an endoscope internal space (not shown) used when checking the airtight state of the endoscope is provided. The other end of the inspection pipe 35 is provided as a water leakage inspection opening 36 that becomes a pipe opening.

An opening at one end of the water leakage inspection pipe 35 has a diameter larger than the inner diameter of the opening and has a resilient sealing pad 3.
7a and the sealing pad 37a are connected to the water leakage inspection opening 36.
And a spring 37b biasing to the side.
Is to be sealed.

The unit body 52 of the detachable unit 50
A small air supply pump 60 and a battery 61 such as a dry battery or a rechargeable battery serving as a power supply for the air supply pump 60 and the illumination lamp 24 are housed therein.

The unit body 52 of the detachable unit 50
In the front end surface, an air supply opening 34, a water leakage inspection opening 36, and electrical contacts 27a and 27b provided in the connection base 14 are provided.
And air supply pins 58 for air supply conduits,
Air supply pin 59 for water leakage inspection and lamp electrodes 62a, 62
b is provided. A watertight ring 67 is provided at the tip of the air supply pin 58 for air supply pipe and the air supply pin 59 for water leakage inspection.
A watertight ring engaging groove 3 provided in the inner peripheral portion of the air supply opening 34 and the water leakage inspection opening 36.
4a and 35a are engaged in a watertight manner with a click feeling.

The pressurized air from the air supply pump 60 is supplied between the air supply pump 60 and the air supply pin 58 for air supply line and the air supply pin 59 for water leakage inspection by operating the switch lever 54. A switching cock 63 is provided as a pipeline selecting means for selectively switching and sending the air to the air supply pin 58 for air supply or the air supply pin 59 for water leakage inspection.

Further, the battery 62 is connected to the electrode 62.
a and first wires 64a and 64b electrically connected to 62b
And the second wiring 6 electrically connected to the air supply pump 60
5a and 65b are provided, and the second wiring 65a is provided.
A pump contact 66 for switching between a conductive state and a disconnected state by operating the switch lever 54 is provided in the middle of the switch lever 54.

That is, the communication state of the switching cock 63 and the driving state of the air supply pump 60 are determined by the switch lever 5.
4 can be appropriately controlled by operating the same.

Accordingly, the fixing ring 53 is screwed and fixed to the connection base 14, whereby the air supply pipe air supply pin 58 is disposed in the air supply opening 34, and the water leakage inspection air supply pin 59 is connected. The electric contact 27a, 27b and the lamp electrode 62
a and 62b become conductive.

At this time, the watertight rings 67 and 68 provided at the distal ends of the air supply pipe air supply pin 58 and the water leakage inspection air supply pin 59 are connected to the air supply opening 34 and the water leakage inspection opening. Watertight ring engagement groove 3 provided in the inner peripheral portion of the portion 36
4a and 35a are engaged in a watertight manner with a click feeling.

When the water leakage inspection air supply pin 59 is inserted into the water leakage inspection pipe 35 from the water leakage inspection opening 36 of the connection base 14, the distal end of the water leakage inspection air supply pin 59 is inserted. After the surface comes into contact with the sealing pad 37a, the sealing pad 37a is pressed against the urging force of the spring 37b.
To release the closed state by the watertight valve 37. Reference numeral 59a is a side hole for ejecting pressurized air.

In this embodiment, the switch lever 5
By arranging the switch 4 at the “ON” display position, the pump contact 66 becomes conductive and power is supplied from the battery 61 to the air supply pump 60 to start driving, while interlocking with the switch lever 54. As shown in FIG. 2, the switching cock 63 communicates with the air supply line air supply pin 58 side, so that pressurized air from the air supply pump 60 flows from the air supply line air supply pin 58 to the air supply opening 34. Through the air supply tube 33
Will be supplied to

On the other hand, the switch lever 54 is set to "TES
When the switch is moved to the “T” display position, the pump contact 66 is turned on, power is supplied from the dry battery to the air supply pump 60, and driving is started. As shown in FIG. 3, the switching cock 63 communicates with the air supply pin 59 for water leakage inspection. For this reason, pressurized air from the air supply pump 60 passes through the water leakage inspection pipe 35 from the side hole 59 a of the water leakage inspection air supply pin 59 disposed in the water leakage inspection opening 36, and passes through the inside of the endoscope. It is supplied to the space.

Finally, the switch lever 54 is set to "OF"
F ”, the pump contact 66
Is disconnected. As a result, the supply of power from the battery 61 to the air supply pump 60 is stopped, and the air supply pump 6
0 stops driving.

The air supply pump 60 is provided with a relief mechanism (not shown), and is configured not to be pressurized to a pressure higher than a set pressure when the air supply side pipeline is in a closed state.

The monitor-integrated video processor 40 detachably connected to the connector 13 has a video circuit 42 for generating an image signal photoelectrically converted by the solid-state image sensor 29 into a video signal. The video signal generated by the circuit 42 is output to the monitor 41.

That is, by connecting the monitor integrated video processor 40 to the connector 13, the signal line 31 and the dummy line 32 wired to the connector 13 are electrically connected to the video circuit 42. You. Then, the video circuit 42 removes noise from the input electric signal, performs predetermined signal processing to generate a video signal, outputs the video signal to the monitor 41, and displays the image of the observation site on the screen. indicate.

The power supply of the monitor-integrated video processor 40 may be provided inside the monitor-integrated video processor 40 in consideration of portability as an endoscope device, or the power supply may be attached or detached. The battery 61 of the unit 50 may be used as a power supply.

The operation of the endoscope apparatus 1 configured as described above will be described. First, when an inspection is performed using the endoscope apparatus 1, a battery 6 such as a battery suitable for use or a charged rechargeable battery is used.
1 is loaded into the unit main body 52 and the lid 57 is arranged.

Next, the attachment / detachment unit 50 is disposed on the connection base 14 of the endoscope 10 and the air supply pipe air supply pin 58 and the water leakage inspection air supply pin 59 are connected to the air supply opening 3 of the connection base 14.
4. Push in so as to fit into the water leakage inspection opening 36,
The watertight rings 67, 68 are fitted with the watertight ring engagement grooves 34a, 35.
a. Thereafter, the fixing ring 53 is connected to the connection base 1.
4 to complete the attachment of the detachable unit 50 to the operation unit 12.

As a result, the lamp electrodes 62a and 62b which are electrically connected to the battery 61 contact the electrical contacts 27a and 27b of the connection base 14, and connect the illumination lamp 24 and the battery 61 via the lamp contact 20a. A circuit is formed.

Next, the lamp switch 20 is pushed in to turn on the lamp contact 20a. Then, a current flows from the battery 61 to the illumination lamp 24, and the illumination lamp 24 is turned on. This allows the illumination lamp 24
Is emitted from the illumination window 21 through the condenser lens 26 and the light guide fiber 25 to illuminate the observation site.

The image of the observation site illuminated by the illumination light is formed on the solid-state image sensor 29 through the observation window 22 and is converted into an image signal. The video signal is transmitted to the video circuit 42 of the body type video processor 40, is generated into a video signal by the video circuit 42, and is displayed on the screen of the monitor 41.

During observation, dirt such as body fluid adheres to the surface of the observation window 22 so that a clear monitor image cannot be obtained.
If dirt such as body fluids adhere to the surface of the illumination window 21 and the amount of illumination is insufficient, the switch lever 54 provided on the detachable unit 50 is set to the “ON” position.

Then, the air supply pump 60 starts to be driven, and the switching cock 63 is switched so as to communicate with the air supply opening 34.
The pressurized air generated in the above is ejected from the air supply opening 34 through the air supply tube 33 to the surface of the observation window 22 and the illumination window 21 from the air supply nozzle 23 disposed at the distal end portion 15. Go.

As a result, dirt and the like adhering to the surfaces of the windows 21 and 22 are blown off by the pressurized air, so that a clear image can be continuously observed. At the time of observation, the switch lever 54 is temporarily moved to the “OFF” position, and the driving of the air supply pump 60 is stopped.

When the inspection or treatment is completed and the endoscope 1 is removed from the observation site, the lamp switch 20 is operated to turn off the lamp contact 20a, and the illumination lamp 24 is turned off. Perform a water leak test.

At this time, first, the endoscope 10 is held in a state of being immersed in the liquid. However, at this time, care is taken so that the suction opening 55 of the detachable unit 50 does not immerse in the liquid. The switch lever 5 of the detachable unit 50
4 is moved to the “TEST” position.

Then, the air supply pump 60 starts driving, and the switching cock 63 communicates with the water leakage inspection opening 36. As a result, the pressurized air generated by the air supply pump 60 blows out from the side hole 59a of the water leakage inspection air supply pin 59 and is sent into the internal space of the endoscope. At this time, the presence or absence of bubbles generated from the surface of the endoscope is confirmed.

Then, the switch lever 54 is turned "OFF".
Move to the position and stop the driving of the air supply pump 60. As a result of the water leakage inspection, if the generation of air bubbles is not confirmed, the washing operation is continuously performed.

When the detachable unit 50 is removed from the operation unit 12, the watertight valve 37 closes the water leak inspection opening 36 in a watertight manner, and the inside of the endoscope has a watertight structure.
Therefore, when cleaning the outer surface of the endoscope 10, the detachable unit 50 may be removed from the operation unit 12 as necessary.

As described above, the small air supply pump is integrally provided in a detachable unit in which the battery serving as the power source of the illumination lamp is provided and which can be detachably attached to the connection base of the operation unit, and is supplied to the connection base. An air opening and a water leakage inspection opening are provided, and a detachable unit having the air supply pump is integrally fixed to a connection base. By appropriately operating a switch lever provided on the detachable unit, the air supply is performed. The pressurized air sent from the pump can be selectively sent to an air supply duct communicating with the nozzle at the distal end of the insertion section or to the internal space of the endoscope.

As a result, dirt and the like adhering to the window surface can be removed without impairing the portability of the endoscope device provided with the air supply pump, and the observation efficiency can be improved. In addition, since a water leak test of an endoscope can be easily performed by using the air supply pump without using a dedicated water leak detector as in the related art, it is useful for early detection of water leak.

In addition, the portability can be greatly improved by directly attaching the video processor integrally including the television monitor to the endoscope operation section. As a result, the observation image displayed on the monitor screen can be checked while the face is kept away from the endoscope, improving operability and enabling viewing of the observation image on the screen by many people. Become.

It should be noted that the present invention is not limited to only the above-described embodiments, and various modifications can be made without departing from the spirit of the invention.

[Appendix] According to the above-described embodiment of the present invention as described in detail above, the following configuration can be obtained.

(1) An air supply pipe communicating with the air supply nozzle disposed at the distal end of the insertion section, a water leak inspection pipe communicating with the internal space of the endoscope, and a light guide fiber for guiding illumination light. An endoscope having an illumination lamp for supplying illumination light to a light incident end of the light guide fiber, and a battery serving as a power supply for the lamp are disposed in a connection base provided in an operation section of the endoscope. In the endoscope device in which the detachable detachable unit is detachable, an electric contact for electrically connecting the illumination lamp and the battery to the connection base of the endoscope, an air supply port of the air supply pipe, and the water leak are provided. While the pipe opening of the inspection pipe is arranged, the inside of the detachable unit is driven by a battery which is a power supply of the illumination lamp, and is connected to the air supply pipe or the water leak inspection pipe via a pipe selecting means. To supply pressurized air The endoscope apparatus provided with a pump.

(2) The endoscope apparatus according to appendix 1, wherein a pump contact is provided at an intermediate portion of a wiring connecting the air supply pump and the battery in the detachable unit.

(3) The endoscope apparatus according to Supplementary Note 1 or 2, wherein the detachable unit is provided with a switch lever serving both as a switch for switching the contact point for the pump and a switch for switching the conduit selecting means. .

[0066]

As described above, according to the present invention, an air supply pump for supplying pressurized air can be detachably provided to an endoscope, and the driving of the air supply pump is turned on by an illumination lamp. It is possible to provide an endoscope apparatus excellent in portability performed by a power supply to be operated.

[Brief description of the drawings]

FIG. 1 to FIG. 3 relate to an embodiment of the present invention,
FIG. 1 is a diagram illustrating a schematic configuration of an endoscope apparatus.

FIG. 2 is a diagram illustrating a relationship between an attach / detach unit having an air supply pump and an endoscope.

FIG. 3 is a diagram showing a relationship between a pump and a switching cock in a water leak inspection state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Endoscope apparatus 10 ... Endoscope 12 ... Operation part 14 ... Connection base 23 ... Air supply nozzle 24 ... Illumination lamp 25 ... Light guide fiber 33 ... Air supply tube 34 ... Air supply opening 35 ... Water leak inspection Pipe line 36 ... Opening for water leak inspection 50 ... Removable unit 60 ... Air supply pump 61 ... Battery 63 ... Switch cock

Continuation of the front page (72) Inventor Takashi Suzuki 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Industrial Co., Ltd. (72) Inventor Seiichi Hosoda 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optical Inside the Industrial Co., Ltd. (72) Inventor Masaaki Nakazawa 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optical Industrial Co., Ltd. (72) Adult Makai Inventor 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optical Within Industrial Co., Ltd. (72) Inventor Takeaki Nakamura 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optical Industrial Co., Ltd. F-term (reference) 2H040 BA14 BA24 CA04 DA21 DA53 DA57 GA02 4C061 AA00 BB00 CC00 DD03 FF11 FF42 GG02 HH02 JJ11

Claims (1)

[Claims] An air supply pipe communicating with an air supply nozzle disposed at a distal end portion of an insertion section; a water leak inspection pipe communicating with an internal space of an endoscope; a light guide fiber for guiding illumination light; An endoscope including an illumination lamp for supplying illumination light to a light incident end of the light guide fiber, and a battery serving as a power supply for the lamp are disposed in a connection base provided in an operation unit of the endoscope. In an endoscope apparatus in which a detachable unit is detachable, an electrical contact for electrically connecting the illumination lamp and the battery to a connection base of the endoscope, an air supply port of the air supply pipe, and the water leak inspection While the pipe opening of the pipe for water supply is arranged, the inside of the detachable unit is driven by a battery which is a power supply of the illumination lamp, and is connected to the air supply pipe or the water leak inspection pipe via pipe selection means. Air supply port for supplying pressurized air The endoscope apparatus characterized in that a flop.