JPH079301U - Air / water switching device for endoscopes - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to provide a sanitary air / water supply / switching device for an endoscope, which is capable of supplying water and cleaning the entire length of the air supply conduit. [Structure] The pressure chamber 15 in the water storage tank 10 is connected to the air supply line 17
A first state in which the water conduit 23 is in communication with the water supply conduit 18 and a second state in which the pressurizing chamber 15 is in communication with both the air supply conduit 17 and the water supply conduit 18; A switching valve 21 is provided that is capable of switching between a third state in which both the air supply conduit 17 and the water supply conduit 18 are in communication.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an air / water supply switching device for an endoscope, which is capable of supplying air and water from the tip of an insertion portion.

[0002]

[Prior art]

 In recent years, in order to prevent inter-patient infection via the endoscope, it has been required to completely clean the endoscope after each examination, and it is necessary to clean the endoscope by inserting air into the distal end of the insertion section. It is also necessary to clean the inside of the pipeline and the water supply pipeline over the entire length.

However, in the previous endoscope, although it was possible to send air instead of water into the water supply conduit, it was not possible to send water into the air supply conduit, so that the air supply conduit was The inside was incompletely cleaned.

[0004] Therefore, conventionally, a switching plug capable of exchanging and connecting the air supply pipe and the water supply pipe is provided in the operation portion of the endoscope to supply water into the air supply pipe and I was able to wash it (Jitsuko Sho 63-2006).

[0005]

[Problems to be solved by the device]

 However, when the above-mentioned switching plug is provided in the operating portion, water can be passed only through the portion between the distal end of the insertion portion and the operating portion, that is, the front half of the air supply line, so that the operating portion cannot be used. The inside of the air supply line could not be cleaned by water supply, and the inside of the air supply line was incompletely cleaned.

Therefore, an object of the present invention is to provide a sanitary endoscope air / water supply switching device capable of supplying water and cleaning the entire length of the air supply conduit.

[0007]

Means for Solving the Problems In order to achieve the above object, an endoscope air / water switching device according to the present invention is connected to an air pump for pressurizing the inside of a water storage tank and connected to the water storage tank. A pressurizing conduit communicating with the inside, a pressurizing chamber formed by a space above the water surface in the water storage tank, a water guide pipe having an inlet opening into the water in the water storage tank, and an insertion portion of the endoscope. An air supply conduit connected to the air supply conduit opening at the tip, a water supply conduit connected to the water supply conduit opening at the tip of the insertion part of the endoscope, and the pressurizing chamber communicating with the air supply conduit. At the same time, a first state in which the water conduit is communicated with the water supply conduit, a second state in which the pressurizing chamber is communicated with both the air supply conduit and the water supply conduit described above, and the water conduit are connected with the water supply conduit Switchable switching between the trachea and the third state in which it communicates with both the water supply line and the water supply line And said that you were provided with the door.

[0008]

【Example】

 Embodiments will be described with reference to the drawings. FIG. 4 shows an endoscope and its air / water supply device. In the figure, 1 is an operating portion of the endoscope, and 2 is an insertion portion made of a flexible tube.

Reference numeral 3 denotes a connector that is connected to a light source device (not shown). Inside the light source device, in addition to a light source lamp for supplying illumination light to an illumination light guide, an air supply pump 50 and the like are built-in. Has been done.

Reference numeral 10 is a water storage tank for storing cleaning water. The pressure pipe 11 communicating with the inside of the head is connected to the discharge port of the air supply pump 50, and the air discharged from the air supply pump 50 is sent into the water storage tank 10 to pressurize the water storage tank 10. It

An air supply nozzle 5 and a water supply nozzle 6 that are open to the outside are provided in a protruding manner on a tip end main body 4 provided at the tip of the insertion portion 2 of the endoscope. The space between the head of the water storage tank 10 and the air supply nozzle 5 and the water supply nozzle 6 was inserted into the air supply pipe 17, the water supply pipe 18, and the endoscope connected to the head of the water storage tank 10. They are connected by an air supply pipe 7 and a water supply pipe 8.

It should be noted that the air supply pipe 17 and the water supply pipe 18 are each formed in a double tubular shape with the water supply pipe 18 inside, and are connected to the endoscope detachably at the connector 3 part. Has become.

The operation unit 1 is provided with an air / water supply operation valve 9 for performing air / water supply operation. Both the air supply pipe 7 and the water supply pipe 8 are connected to the air / water supply operation valve 9 in the middle thereof. ing .

FIG. 1 shows a water storage tank 10, in which a pressurizing pipe 11 is provided on a side portion of a cap 14 which is airtightly screwed to the head of the water storage tank 10 with an O-ring 13 for sealing interposed therebetween. Now, inside the water storage tank 10 above the water surface is a pressurizing chamber 15.

A switching valve 21 is slidably inserted in the axial direction of the switching hole 20 in a switching hole 20 formed through the cap 14 in a lateral direction. An air inlet 22 communicating with the pressurizing chamber 15 and a water inlet 24 communicating with the water in the tank via the water conduit 23 are provided below the switching hole 20. Has been formed.

An air outlet 26 that communicates with the air supply pipe 17 and a water outlet 27 that communicates with the water supply pipe 18 are formed on the upper side of the switching hole 20. The switching valve 21 is rod-shaped, and two communication grooves 28, 29 are formed on the outer peripheral surface thereof, and O-rings 31, 32, 33 for sealing are attached to the switching valve 21 along the side edges thereof. There is.

Both ends of the switching valve 21 project from the side surface of the cap 14 of the water storage tank 10, and the switching valve 21 can be moved in the switching hole 20 in the axial direction by pushing the projecting portions.

FIG. 1 shows a state in which the switching valve 21 is in the center position, and in this state, the air inlet 22 and the air outlet 26 communicate with each other through the first communication groove 28 and the second communication channel 28. The water inlet 24 and the water outlet 27 communicate with each other through the groove 29.

Therefore, the air sent from the air supply pump 50 is sent out from the pressurization chamber 15 to the air supply pipe 17 and sent to the air supply pipe 7 of the endoscope, and pressurized by the pressure in the pressurization chamber 15. The stored water in the tank is sent out from the water conduit 23 to the water supply pipe 18 and sent to the water supply pipe 8 of the endoscope.

As shown in FIG. 2, when the switching valve 21 is pushed to the left and moved, only the air inlet 22 communicates with the first communication groove 28, and the water inlet 24 with the second communication groove 29. The air outlet 26 and the water outlet 27 are in communication with each other.

Therefore, the air in the pressurizing chamber 15 has no place to go, and the water in the tank is sent out to both the air supply pipe 17 and the water supply pipe 18 to supply the air supply pipe 7 and the water supply pipe of the endoscope. It is sent to 8 at the same time.

As shown in FIG. 3, when the switching valve 21 is pushed and moved to the right, only the water inlet 24 communicates with the second communication groove 29 and the air inlet 22 communicates with the first communication groove 28. The air outlet 26 and the water outlet 27 are in communication with each other. Therefore, the air in the tank is sent out to both the air supply pipe 17 and the water supply pipe 18, and is simultaneously sent out to the air supply pipe 7 and the water supply pipe 8 of the endoscope.

According to the air / water supply / switching device for an endoscope configured as described above, when the endoscope is used, the switching valve 21 is set to the state of FIG. 1 to perform normal air supply and water supply. After use, first, as shown in FIG. 2, water is supplied to all the pipes of the air supply pipe 17, the water supply pipe 18, and the air supply pipe 7 and the water supply pipe 8 to wash the inside of each pipe with cleaning water, and then In the same manner as in 3, all the pipes can be supplied with air to drain the water in each pipe.

The present invention is not limited to the above-described embodiment, and the switching valve 21 may be of a type in which the pipeline is switched by rotating the switching valve 21, for example. The air supply pipe 7 and the water supply pipe 8 merge into one pipe between the air supply / water supply operation valve 9 and the tip of the insertion portion 2, and the air supply nozzle 5 and the water supply nozzle 6 are combined into one nozzle. It may be a shared one.

[0025]

[Effect of device]

 According to the air supply / water supply switching device for an endoscope of the present invention, by switching the switching valve after use, both the air supply pipe and the water supply pipe from the water storage tank portion to the tip of the insertion portion of the endoscope are connected. It is extremely hygienic because water can be simultaneously sent to the pipeline to clean the inside of the pipeline.

Further, since it is not necessary to provide the switching valve on the operation section of the endoscope, the operation section can be made smaller and lighter, and the operability of the endoscope can be improved.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of an embodiment in a state of using an endoscope.

FIG. 2 is a vertical cross-sectional view of the embodiment in a state of water supply after using the endoscope.

FIG. 3 is a vertical cross-sectional view of an example of a state of insufflation after using an endoscope.

FIG. 4 is an overall schematic view of an embodiment of an air / water supply / switching device of an endoscope.

[Explanation of symbols]

 7 Air Supply Pipe 8 Water Supply Pipe 10 Water Storage Tank 15 Pressurizing Chamber 17 Air Supply Pipe 18 Water Supply Pipe 21 Switching Valve 23 Water Transfer Pipe

Claims (1)

[Scope of utility model registration request] 1. A pressurizing pipe line connected to an air feed pump for pressurizing the inside of the water storage tank and communicating with the inside of the water storage tank, and a pressure chamber formed by a space above the water surface in the water storage tank. , A water conduit whose inlet opens into the water in the water storage tank, an air supply conduit connected to the air supply conduit that opens at the tip of the insertion part of the endoscope, and a water supply pipe that opens at the end of the insertion part of the endoscope A water supply conduit connected to the conduit, a first state in which the pressurizing chamber is in communication with the air supply conduit and the water conduit is in communication with the water supply conduit, and the pressurizing chamber is in the air supply conduit. A switching valve is provided that is switchable between a second state in which it communicates with both the water supply pipelines and a third state in which the water conduit communicates with both the air supply pipeline and the water supply pipeline. An air / water switching device for endoscopes.