JPH0742404Y2 - Endoscope air supply device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an air supply device for an endoscope for supplying air into a body cavity or the like through an endoscope, and in particular, it is provided in the endoscope. The present invention relates to an endoscope air supply device capable of selectively connecting air and carbon dioxide gas to an air supply pipe.

When observing the inside of the body cavity such as the stomach or intestine with an endoscope, blow air as necessary from the tip of the insertion part to inflate the body cavity or blow off water droplets etc. adhering to the surface of the observation window. You can do it. However, when performing high-frequency treatment in the intestine, carbon dioxide gas is sent instead of air after suctioning and discharging gas from the intestine so that the methane gas in the intestine does not explode.

[Conventional technology]

Conventionally, in an air supply device for an endoscope capable of selectively supplying air and carbon dioxide gas, a receptacle for introducing carbon dioxide gas is provided in a connector part of an endoscope connected to a light source device. A control valve for performing air supply operation of carbon dioxide gas is added to the operation part that is formed and connected to the base part of the insertion part of the endoscope, and the carbon dioxide gas is supplied to the air supply outlet at the tip of the insertion part as necessary. I was able to send.

[Problems to be solved by the device]

However, the conventional endoscope air supply device as described above cannot supply carbon dioxide gas with a general endoscope, and requires a dedicated endoscope for supplying carbon dioxide gas. To do. Moreover,
In the endoscope, a carbon dioxide gas receiving port must be formed in the connector part and the carbon dioxide gas operating valve must be attached to the operating part, so that the structure of the endoscope becomes complicated and the weight becomes heavy.
There is a drawback that the operation of the operation unit becomes complicated.

The present invention solves the conventional drawbacks described above and provides an endoscope air supply device capable of selectively supplying carbon dioxide gas by a normal endoscope operation using a general endoscope. The purpose is to do.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the endoscope air supply device of the present invention provides an air supply device for supplying air into an air supply pipe of the endoscope from an air supply inlet formed outside the device part of the endoscope. An air pump,
A connection pipe line for connecting the air supply pump and the air supply inlet; a first state provided in the middle of the connection pipe line to communicate the air supply pump with the air supply inlet; The present invention is characterized in that switching means for selectively switching between a second state in which a carbon dioxide gas supply means for supplying carbon dioxide gas to the air supply inlet is made to communicate is provided.

[Action]

When the switching means is set to the first state, the air feed pump is communicated with the air feed inlet of the endoscope, and the air is fed.
When the switching means is set to the second state, the carbon dioxide gas supply means is communicated with the gas feed inlet, and the carbon dioxide gas is fed.

〔Example〕

 Embodiments will be described with reference to the drawings.

FIG. 1 shows a first embodiment of the present invention, in which 10 is an endoscope, 30 is a light source device, and 50 is a water supply tank unit.

The endoscope 10 is a general one in which an air supply pipe 11 and a water supply pipe 12 are incorporated, and the air supply outlet 11a and the water supply outlet 12a are respectively opened at the tip of an insertion portion 13 made of a flexible tube to supply air. The inlet 11b and the air supply inlet 12b have a connector 14 connected to the light source device 30.
Each side has a double opening.

The operation portion 15 is connected to the proximal end side of the insertion portion 13 of the endoscope 10,
The operation unit 15 and the connector 14 are connected by a flexible connecting pipe 16, and the air supply pipe 11 and the water supply pipe 12 are inserted inside them. The air supply pipe 11 is connected to the air supply inlet 11b.
And the air supply outlet 11a are communicated with each other, and the water supply pipe 12 communicates the water supply inlet 12b with the water supply outlet 12a. Further, by the air / water supply operation valve 17 provided in the operation unit 15, the air supply pipe 11 and the water supply pipe 12
Is opened and closed.

An air supply pump 31 is provided in the light source device 30. The air supply pump 31 sends air into the air supply pipe 1 from the air supply inlet 11b of the endoscope 10 and pressurizes the water in the water supply tank 51 described later to supply water from the water supply inlet 12b into the water supply pipe 12. Fulfill the role of sending in. Reference numeral 32 is a switch for turning on and off the air supply pump 31.

Reference numeral 33 denotes an air outlet communicating with the outlet of the air supply pump 31, which is formed on the side surface of the light source device 30. Then, a switching operation valve 34 that can be operated from the outer surface of the light source device 30 is provided in the middle of the connection pipe line that connects the air supply pump 31 and the air outlet 33.

The switching operation valve 34 has two fluid inlets 35 and 36 and one fluid outlet 3
7, and either one of the two fluid inlets 35 and 36 can be selectively communicated with the fluid outlet 37. The outlet of the air supply pump 31 is connected to the first fluid inlet 35, and the carbon dioxide gas cylinder 40 is connected to the second fluid inlet 36. 41 is a carbon dioxide cylinder 40
It is a manual valve for opening and closing.

2 and 3 schematically show the operation of the switching operation valve 34.

As shown in FIG. 2, in a normal state (first state) in which the switching operation valve 34 is not pressed (first state), the first fluid inlet 35 communicates with the fluid outlet 37, and air is sent to the fumarole 33. It

On the other hand, as shown in FIG. 3, the switching operation valve 34
In the second state in which the communication state is switched by pressing,
The fluid inlet 36 communicates with the fluid outlet 37, and carbon dioxide gas is sent to the fumarole 33.

Returning to FIG. 1, the water supply tank unit 50 includes the light source device 30.
It is detachably connected to the air outlet 33 and the air / water inlets 11b and 12b of the endoscope 10. The air outlet 33 and the air supply inlet 11b are connected by a connecting conduit formed in the air supply tank unit 50, and the air or carbon dioxide gas sent to the air outlet 33 is supplied to the air supply inlet 11b. It is sent to the air supply pipe 11 from.

Further, the air or carbon dioxide gas sent from the fumarole 33 is
The inside of the water supply tank 51 is pressurized, and the water contained in the air supply tank 51 is pressurized by the pressure to the water supply inlet 12 of the endoscope 10.
sent to b.

According to the above-mentioned embodiment configured as described above, the switching operation valve
In a normal state where the air supply pump 31 is not operated, the air sent out from the air supply pump 31 is sent to the air supply pipe 11 in the endoscope 10 and the air supply / water supply operation valve 17 is operated to supply the air supply outlet 11a at the tip of the insertion portion 13. You can send out any air from.

Further, by operating the air / water supply operation valve 17, water can be arbitrarily supplied from the air supply outlet 11a.

Then, when the switching operation valve 34 is switched, carbon dioxide gas is sent into the air supply pipe 11 instead of air, and by operating the air supply / water supply operation valve 17, carbon dioxide gas is arbitrarily sent out from the air supply outlet 11a, or Water can be arbitrarily sent out from the water supply outlet 12a.

FIG. 4 shows a second embodiment of the present invention in which the switching operation valve 34 is detachably attached to both the light source device 30 and the water tank unit 50 and is provided outside the light source device 30. is there. The other parts are the same as in the first embodiment. As described above, the switching operation valve 34 in the present invention may be provided anywhere on the way of the connection pipe line that connects the air supply pump 31 and the air supply inlet 11b.

In each figure, A means air, W means water, and G means carbon dioxide gas.

[Effect of device]

According to the endoscope air supply device of the present invention, air and carbon dioxide gas can be easily selected and sent using a general endoscope that is not provided with a special device for supplying carbon dioxide gas. Therefore, the weight of the endoscope does not increase and the operation does not become complicated, and good operability as an endoscope can be maintained, and air and carbon dioxide gas can be selectively fed.

Also, since only one switching operation valve for supplying carbon dioxide gas is required in a system consisting of one light source device and many types of endoscopes, it is necessary to equip each endoscope. Compared with the conventional air supply device for endoscopes, the cost can be significantly reduced, and it is also very economically advantageous.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of the first embodiment, FIGS. 2 and 3 are schematic diagrams showing a switching operation of a switching operation valve, and FIG. 4 is an overall schematic diagram of the second embodiment. . 10 ... Endoscope, 11 ... Air pipe, 11a ... Air outlet, 11b ...
… Air inlet, 30 …… Light source device, 31 …… Air pump, 34…
… Switching control valve, 40 …… Carbon dioxide gas cylinder, 50 …… Water tank unit.

Claims (1)

[Scope of utility model registration request] 1. An air feed pump for feeding air into an air feed pipe of an endoscope from an air feed inlet formed outside an insertion portion of an endoscope, the air feed pump, and the air feed inlet. A connection conduit for connection, a first state provided in the middle of the connection conduit to communicate the air supply pump with the air supply inlet, and a carbon dioxide gas for supplying the carbon dioxide gas to the air supply inlet The switching means for selectively switching between the second state in which the carbon dioxide gas supplying means is in communication with each other, and the connection between the switching means and the air supply inlet by adding water to be sent to the water pipe of the endoscope. An air supply device for an endoscope, which is provided with a water supply tank connected to a pipeline.