JPH0433452B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an endoscope conduit cleaning device for cleaning conduits built into an endoscope.

In general, endoscopes are equipped with various pipes for selectively supplying air, water, or suction. Therefore, when cleaning an endoscope after use, it is necessary to thoroughly clean not only the outer surface of the endoscope but also the inside of each duct. However, the conventional method for cleaning the inside of the pipes is to connect a cleaning liquid injection tube to a mouthpiece provided at one end of each pipe, and pressurize the cleaning liquid from one end of each pipe with a pump or the like. was sent into all the pipes (see Utility Model Application No. 84443/1983). However, according to this method, there is a limit to the pressure and amount of the cleaning liquid, so that the cleaning liquid does not reach every corner of the pipes, which tends to cause insufficient cleaning of some parts. In particular, cleaning of the air supply line on the distal end side, which has a small diameter, was insufficient, resulting in the distal end air supply nozzle becoming clogged with blood, dirt, and the like.

The present invention has been made focusing on the above circumstances,
The purpose is to provide an endoscope conduit cleaning device that not only cleans each conduit section but also powerfully sends a cleaning liquid to only some conduits for thorough cleaning. It is in.

That is, the present invention provides cleaning liquid that is watertightly connected to a cylinder of a control valve for opening and closing a conduit inserted between a distal conduit section and a proximal conduit section of a conduit built into an endoscope. A connection port body is provided to supply the
The endoscope tube is equipped with a switching mechanism that can select communication with the pipe section, and by switching the switching mechanism, cleaning liquid is selectively supplied to the pipe pipe. Located in the road cleaning equipment.

A first embodiment of the present invention will be described below with reference to FIGS. 1 to 7.

1 in FIG. 1 is an endoscope, and this endoscope 1 includes an insertion section 2, an operation section 3, and a light guide cable 4.
It is composed of. Various ducts are built into the endoscope 1. First, an air supply conduit 5 and a water supply conduit 6 are inserted through the insertion section 2, the operation section 3, and the light guide cable 4. The ends of the air supply conduit 5 and the water supply conduit 6 join together and are connected to an air and water supply nozzle 7 provided at the distal end of the insertion portion 2. The nozzle 7 is provided toward the outer surface of the observation window 8, and is configured to spray cleaning water or air toward the outer surface of the observation window 8. Further, a connector 9 is provided at the extending end of the light guide cable 4. This connector 9 has first and second air supply caps 1 communicating with the air supply pipe line 5.
0, 11, water supply cap 12 communicating with water supply pipe 6
and a suction cap 1 that communicates with a suction conduit to be described later.
3 are provided respectively. And the above first
The air supply cap 10 is connected to an air pump in the light source device (not shown) when the connector 9 is attached to the light source device (not shown). Also, the second
The air supply mouthpiece 11 and the water supply mouthpiece 12 are connected to the air supply tube 15 and the water supply tube 1 on the water supply tank 14 side, respectively.
6, respectively. Further, the suction cap 13 is connected to a suction device (not shown).

On the other hand, a suction conduit 17 is inserted into and arranged inside the insertion section 2, the operation section 3, and the light guide cable 4. This suction conduit 17 is formed using a treatment instrument insertion channel 18 on the distal end side. The distal end of the treatment instrument insertion channel 18 opens at the distal end surface of the insertion section 2, and the proximal end of the treatment instrument insertion channel 18 communicates with an insertion port 19 that opens to the outside in the operation section 3. A forceps plug 20 is detachably provided in the insertion port 19. The treatment instrument insertion channel 18 constitutes the upstream pipe section 17a of the suction pipe 17, as described above. A suction on/off control valve 21 is inserted in the middle of the downstream side conduit portion 17b of the suction conduit 17. Further, an air/water supply opening/closing control valve 22 is inserted between the air supply pipe 5 and the water supply pipe 6, and this opening/closing control valve 22 causes the air supply pipe 5 and the water supply pipe 6 to 6 refers to the upstream pipe sections 5a, 6a and the downstream pipe section 5.
It is divided into 6b and 6b. As shown in FIG. 1, the on-off control valves 21 and 22 are arranged side by side on the side surface of the operating section 3 and relatively close to each other. Each of these is constructed as shown in FIG.

The air/water supply opening/closing control valve 22 is a cylinder 30
and a piston 31. That is, the cylinder 30 has a bottomed cylindrical shape with a lower end opening closed by a bottom cover 32, and a threaded portion 33 having a smaller diameter than other parts is formed on the outer periphery of the upper end. An annular attachment member 34 is screwed into the small diameter portion having the threaded portion 33 . This mounting member 34 is fitted into a mounting hole 36 bored in the wall 35 of the operating section 3. A portion of the operating portion 3 protruding from the mounting hole 36 to the outside is formed to have a large diameter, and this stepped portion 37 is joined to the outer surface of the wall 35. Further, a flange 38 is provided near the upper end of the cylinder 30 to be joined to the inner surface of the wall 35, and the wall 35 is inserted between the flange 38 and the stepped portion 37, and the cylinder 30 is It is designed to be held and fixed to this wall body 35. Further, a fitting flange 39 is formed at the outermost end of the attachment member 34, into which a biasing member 41, which will be described later, is fitted.
The inside of the cylinder 30 is formed as a large-diameter cylindrical part 42 on the open end side and a small-diameter cylindrical part 43 on the bottom cover 32 side, and a tapered part 44 is formed at the boundary between them. Further, an escape groove 45 is formed in an annular shape around the entire circumference of the inner wall of the small diameter cylindrical portion 43 near the bottom cover 32 side. The upstream pipe section 5a of the air supply pipe 5 is connected to the upper wall of the small diameter cylinder section 43, and the downstream pipe section 5a is connected to the upper wall of the small diameter cylinder section 43.
b is communicatively connected to the wall of the large-diameter cylindrical portion 42 . Further, the upstream pipe section 6a of the water supply pipe 6 is the upstream pipe section 5 of the air supply pipe 5 of the small diameter cylindrical part 43.
It is connected to the bottom cover 32 side from the connection end of a. Furthermore, the downstream pipe section 6b is connected to a position corresponding to the escape groove 45.

The piston 31 is fitted into the cylinder 30. This piston 31 includes a large diameter shaft portion 46 corresponding to the large diameter cylindrical portion 42 of the cylinder 30, a small diameter shaft portion 47 corresponding to the small diameter cylindrical portion 43, and an operating shaft portion 4 protruding outward from the cylinder 30.
8, and the outer end surface of this operating shaft portion 48 is formed as a finger rest portion 49. A leak hole 51 is opened in the finger rest part 49 and is formed along the axial direction of the piston 31 over the entire length of the large diameter shaft part 46 and the operating shaft part 48 and a part of the small diameter shaft part 47 . The piston 31 is urged outwardly so as to protrude from the cylinder 30 by the urging member 41 made of a wall-like elastic body such as rubber. This biasing member 41 has a substantially skirt-like shape with a constricted part 52 projecting inward in the middle of the peripheral wall,
The lower end is a fitting flange 39 for the mounting member 34.
The upper end of the finger rest 49 is connected to a locking portion 53 formed on the lower surface side of the finger rest portion 49 . Therefore, when the piston 31 is pushed in from the standby state shown in FIG. 2 by placing a finger on the finger rest 49, the constriction 52 is bent inward and elastically deformed, so that the piston 31 is pushed into the biasing member 41. It is designed so that it can be pushed into the cylinder 30 against the urging force of. Note that the piston 3 corresponding to the constricted portion 52
A housing groove 54 is formed on the outer periphery of the operation shaft portion 48 of No. 1, and when the constriction portion 52 is bent inward, the biasing member 41 enters the housing groove 54 and deforms to protrude outward. I try not to have any.

An annular protrusion 56 that slides on the inner surface of the large diameter cylindrical portion 42 of the cylinder 30 is formed around the entire upper end of the large diameter shaft portion 46 of the piston 31 . In addition, the protrusion 56
The outer end surface of the biasing member 41 comes into contact with a stopper portion 57 formed protruding from the inner end of the biasing member 41 to prevent the piston 31 from coming off and to restrict the standby position of the piston 31. In addition, the piston 31
An annular mounting groove 58 is formed at the boundary between the large diameter shaft portion 46 and the small diameter shaft portion 47.
A ring-shaped valve body 59 made of an elastic material is fitted into the valve body 59 . The valve body 59 is connected to the large diameter cylindrical portion 42 of the cylinder 30 when reciprocating the piston 31.
Slide inside.

A cylindrical sealing member 61 is fitted on the outer periphery of the small diameter shaft portion 47 of the piston 31.
It is adapted to slide within the small diameter cylindrical portion 43 of 0. Further, a communication groove 62 is formed in an annular shape on the outer peripheral surface of the sealing member 61, and a passage 63 is formed between the sealing member 61 and the inner wall of the small diameter cylindrical portion 43. Further, this small diameter shaft portion 47 has a first communication hole 64 that communicates with the leak hole 51 and the inside of the large diameter cylinder portion 42 in the standby position shown in FIG. A second communication hole 65 is provided to communicate with the portion 5a.

Therefore, in the state shown in FIG. 2 in which the air/water supply on-off control valve 22 is not operated, gas is sent into the leak hole 51 through the upstream pipe section 5a of the air supply pipe 5 and the second communication hole 65. It will be done. and,
This gas is released into the atmosphere from this leak hole 51. Although it also communicates with the downstream pipe section 5b via the first communication hole 64, it does not flow because the flow resistance on this side is large. Next, when air is to be supplied, the leak hole 51 is closed by placing a finger on the finger contact portion 49 of the piston 31. As a result, the leak hole 51
The gas released from the second communication hole 65 passes through the leak hole 51 and the first communication hole 64 to the valve body 5.
9 is pushed open, the air flows into the downstream pipe line 5b of the air supply pipe line 5, and is ejected from the nozzle 7. When water is to be supplied, the piston 31 is pushed in against the biasing force of the biasing member 41 while the leak hole 51 is blocked with a finger, and the valve body 59 is pressed against the tapered portion 44 to cut off the air supply. . At this time, the communication groove 62 is connected to the upstream pipe line 6a and the downstream pipe line 6b of the water supply pipe line 6.
communicate with. However, water tank 14
The cleaning water is sent to the nozzle 7 and spouted.

On the other hand, the suction on/off control valve 21 is composed of a cylinder 71 and a piston 72, as shown in FIG. One end thereof is fitted and fixed into a mounting hole 73 formed in the wall body 35 of. The bottom wall of this cylinder 71 is formed with an opening 74 to which the downstream side of the suction conduit 17 is connected, and the side wall is formed with the opening 74 to which the upstream side of the suction conduit 17 is connected.
5 is formed. Further, the outer end of the cylinder 71 is provided with a fitting flange 77 into which a biasing member 76, which will be described later, is fitted. The fitting flange 77 has the same shape as the fitting flange 39 of the air/water supply opening/closing control valve 22 described above, and allows the biasing member 76 to be detachably attached thereto. This biasing member 76 also has a similar configuration to the biasing member 41 of the air/water supply on/off control valve 22, and its lower end portion elastically fits into the fitting flange 77. , the upper end portion is elastically attached to a retaining ring 78 provided at the upper end of the piston 72 in a detachable manner. A hollow hole 79 is provided in the inner end of the piston 72 along the axial direction of the piston 72.
9 communicates with a communication hole 81 that is opened to the outside and is provided in the side wall of the midway portion of the piston 72 . The above communication hole 8
1 is located above the outer end of the cylinder 71 in the standby position, as shown in FIG. and,
When the piston 72 is pushed in, the communication hole 8
1 is arranged to face and communicate with the opening 75. Further, a leak hole 82 is provided in the outer end of the piston 72 along the axial direction thereof,
This leak hole 82 opens to the outside and communicates with a side hole 83 provided in the side wall of the midway portion of the piston 72 .

As shown in FIG.
Since the suction pipe 17 is closed by the peripheral surface of
is blocked and the suction action does not work. Next, when performing a suction operation, a finger is placed on the outer end of the piston 72 to close the opening of the leak hole 82, and the piston 72 is pushed down against the biasing force of the biasing member 76. As a result, the communication hole 8 of the piston 72
1 corresponds to and communicates with the mouth portion 75. As a result, the suction conduit 17 is opened and suction is performed through the treatment instrument insertion channel 18.

By the way, the pistons 31 and 72 of the suction on-off control valve 21 and the air and water supply on-off control valve 22 can be removed from the cylinders 30 and 71 by removing the biasing members 41 and 76 from the fitting flanges 39 and 77 of the cylinders 30 and 71, respectively. , 71 together with the biasing members 41 and 76.

The configuration of the endoscope 1 has been described above, and the cleaning device 85 for the endoscope channel is shown in FIG. This cleaning device 85 has a cleaning liquid tank 86 as a cleaning liquid supply source.
, a delivery device section 87 that pressurizes and sends out the cleaning fluid from this cleaning fluid tank 86 , and this delivery device section 8
7, and a connecting port body 88 communicating with 7. The delivery device section 87 and the connection port body 88 are connected via a three-way switching valve 89. That is, one end of the three-way switching valve 89 is connected to the discharge end of the delivery device section 87, the other end is connected to the connection port body 88 via the first injection tube 91, and the remaining end is connected to the second end. It is connected to a channel connection port body 93 via an injection tube 92 . and,
By operating the switching knob 94, the cleaning liquid can be selectively fed into either of the injection tubes 91, 92.

Therefore, as shown in FIG. 4, the connection port body 88 has a substantially cylindrical insertion housing 95 and a substantially cylindrical pipe switching member 96 fitted into the insertion housing 95. As will be described later, a switching mechanism 97 is incorporated which selects liquid delivery to each of the pipes 5 and 6 on the endoscope 1 side by operating a pipe switching member 96. The insertion housing 95 has one end formed as a fitting end portion 98 that can be fitted into the cylinder 30 of the air/water supply on-off control valve 22, and a first injection hole 99 is formed in the side wall of the distal end of the fitting end portion 98. Further, a second injection hole 101 is formed in the wall portion on the proximal end side. Further, an annular rubber packing 102 is fitted on the peripheral wall located between the first and second injection holes 99 and 101, and the connection port body 88 is connected to the cylinder 3.
0, the connection between the first and second injection holes 99 and 101 is cut off. The pipe switching member 96 is fitted into the insertion housing 95 so as to be able to slide in the axial direction, and an annular rubber pad 1 is provided on the outer periphery of the midway part of the pipe switching member 96.
03 is fitted so as to slide on the inner surface of the insertion housing 95. Further, first and second annular grooves 104 and 105 are formed on the outer periphery of the proximal side of the rubber packing 103 so as to be shifted in the axial direction. It engages with the attached locking ring 106 to regulate the position of the pipe switching member 96. Further, the pipe switching member 96 has a third injection hole 107 formed in the peripheral wall on the distal side of the rubber packing 103. Further, the hollow hole 10 of the pipe switching member 96
8 penetrates along its axial direction, and communicates with the first injection tube 91. Note that an operation knob 109 for pushing and pulling the pipe switching member 96 is provided at the outer end of the pipe switching member 96. Therefore, when the conduit switching member 96 is in the pushed-in position as shown in FIG.
9 is closed, but the second injection hole 101 and the third injection hole 107 communicate with each other. Further, as shown in FIG. 5, when the conduit switching member 96 is in the raised position, the first injection hole 99 is also opened. On the other hand, a coupling elastic member 111 is attached to the outer end of the insertion housing 95 in a fitted state. This coupling elastic member 111 is adapted to be detachably fitted to the fitting flange 39 of the cylinder 30 to hold the connection port body 88.

Furthermore, an elastic cap 112 for closing the opening of the cylinder 71 of the suction on-off control valve 21 from which the piston 72 has been removed is integrally connected to the coupling elastic member 111. As shown in FIG. 4, the elastic cap 112 is elastically fitted to the fitting flange 7 of the cylinder 71 in a detachable manner.

On the other hand, as shown in FIG. 6, the delivery device section 87 is formed by attaching a first mouth body 114 and a second mouth body 115 to a body 113 in which a pressure supply chamber 110 is formed. Each of the mouth bodies 11 above
A syringe connection port body 116 is formed which communicates with 4 and 115. And the first mouth body 114
is the suction tube 11 communicating with the cleaning liquid tank 86.
7 are connected to form a suction pipe line 118.
Further, the second mouth body 115 is connected to the three-way switching valve 89 side via a delivery tube 119 to form a delivery passage 121. Further, the first mouth body 114 is provided with a first check valve 122 that allows only the cleaning liquid to flow from the cleaning liquid tank 86 side, and the second mouth body 115 is provided with a first check valve 122 that allows the flow of cleaning liquid from the cleaning liquid tank 86 side. A second check valve 123 is provided that allows only the passage of water. A manual injector 124, such as a syringe, is connected to the cylinder connection port 116. By pushing and pulling the piston 125 of this manual injector 124, the cleaning liquid is sucked from the cleaning liquid tank 86 side (at this time, the second check valve 123 is closed), and the cleaning liquid is sent to the three-way switching valve 89 side (this (when the first check valve 122 is closed).

Further, as shown in FIG. 7, the channel connection port body 93 is made of a substantially cylindrical elastic member attached to the tip of the second injection tube 92, and has an insertion port 19 protruding from the inner periphery of the open end of the channel. Cylinder part 12
A groove 128 into which the tip flange 127 of No. 6 is fitted is formed. In other words, the channel connection port body 93 is detachably attached to the insertion port 19 in an airtight manner.

Next, a case will be described in which the cleaning device 85 is used to clean each of the conduits 5, 6, and 17 of the endoscope 1. First, remove the forceps plug 20 from the insertion port 19 (if the forceps plug 20 does not interfere with cleaning, you can leave it as is), and then remove the forceps plug 20 from the insertion port 19.
The channel connection port body 93 is fitted to the channel connection port 9 and the second injection tube 92 is connected. In addition, the respective pistons 31 and 72 in the suction opening/closing control valve 21 and the air/water supply opening/closing control valve 22 are moved by the biasing member 4
1, 76, each cylinder 30, 7
Open 1. As shown in FIG.
1 is fitted into the fitting flange 39 and attached. Furthermore, an elastic cap 112 is attached to the fitting flange 77 of the cylinder 71 on the suction on/off control valve 21 side.
and close the opening of the cylinder 71.

Therefore, by operating the manual injector 124 of the delivery device section 87, the cleaning liquid is sucked from the cleaning liquid tank 86, pressurized, and intermittently sent to the three-way switching valve 89 at high pressure. When the three-way switching valve 89 is in communication with the first injection tube 91, the high-pressure cleaning liquid flows into the connection port body 88 through the first injection tube 91. In this case, as shown in FIG. 4, the pipe line switching member 96 is first pushed in. In this pushed-in position, the first injection hole 99 is closed, and the second injection hole 101 passes through the third injection hole 107 to the hollow hole 10.
Connects with 8. Thus, the high-pressure cleaning liquid that has flowed into the connection port body 88 flows intensively only into the downstream pipe section 5b of the air supply pipe 5, and cleans only the downstream pipe section 5b. Therefore, the area around the air and water supply nozzle 7 can be particularly strongly and actively cleaned. In this way, the downstream pipe section 5b of the air supply pipe 5 is actively cleaned. After that, operate the operation knob 109 to switch the pipe line switching member 96
is pulled up as shown in Figure 5. In this pulled-up position, the first injection hole 99 is also opened, and the hollow hole 10
8 communicates with both the air supply pipe 5 and the water supply pipe 6. Then, the cleaning liquid is thoroughly distributed throughout the pipes 5 and 6, and the cleaning liquid is washed to clean the air and water supply nozzles 7 and the first and second air supply caps 1 at the other end.
0,11, flows out from the water supply mouthpiece 12. and,
After this cleaning, the cleaning liquid remaining in each of the pipes 5 and 6 is blown out and drained by sending air by the same means.

Next, the three-way switching valve 89 is switched to send the cleaning liquid into the second injection tube 92.
As a result, the high-pressure cleaning liquid flows from the insertion port 19 into the treatment instrument insertion channel 18 which also serves as the suction conduit 17 and the downstream conduit section 17b of the suction conduit 17, thereby cleaning the respective interiors. After this cleaning, air is pumped in and water is drained in the same manner as described above.

FIG. 8 shows the configuration of an endoscope 131 that uses a cleaning device according to a second embodiment of the present invention. This endoscope 131 is different from the first embodiment described above in that a carbon dioxide gas supply opening/closing control valve 132 is installed side by side with a suction opening/closing control valve 21, and inside the endoscope 131 there is A gas supply pipe line 133 that is opened and closed by an opening/closing control valve 132 and communicates with the air supply pipe line 5 is provided. Furthermore, the carbon dioxide gas supply opening/closing control valve 132 has substantially the same structure as the suction opening/closing control valve 21, except that it is not provided with the leak hole 82.

As the cleaning device of this embodiment, the cylinder 1
The cleaning device 85 of the first embodiment has an elastic cap that is fitted into the opening of the cleaning device 85 and closes the opening.
added to. Then, in the same manner as described in the above embodiment, the piston is removed from the cylinder, and an elastic cap is fitted onto the cylinder 135 for cleaning.

FIG. 9 shows a third embodiment of the present invention,
In this embodiment, the configuration of the switching mechanism 97 of the connection port body 88 is different. That is, the conduit switching member 96 is rotatably attached to the insertion housing 95, and an annular rubber packing 141 is attached to the peripheral wall of the insertion portion of the insertion housing 95, and the rubber packing 141 is positioned between the insertion portions. As shown in FIGS. 10 and 11, a first side hole 142 and a second side hole 143 are formed in the upper and lower side walls. Furthermore, a third side hole 144 and a fourth side hole 145 are provided in the side wall of the conduit switching member 96 corresponding to the side wall portions, respectively. When the conduit switching member 96 is in the first rotational position, the first side hole 142 and the third side hole 14 are connected to each other.
4 match and communicate, but the second side hole 143 and the fourth
The side holes 145 are closed off at different positions. At a second rotational position in which the conduit switching member 96 is rotated 90 degrees from the first rotational position, the first and third side holes 142, 144 are closed, and the second and fourth side holes 143, 145 are in communication. and open it. Thereby, if the first rotational position is set, the air can be sent only to the downstream side pipe section 5b of the air supply pipe line 5. Moreover, if it is set to the second rotational position, it can be fed into the remaining pipes 5a and 6 for cleaning.

12 and 13 show a fourth embodiment of the present invention, in which the third side hole 144 of the third embodiment is formed on each of the four sides, and the pipe switching member 96 The liquid can be sent to the downstream side pipe section 5b of the air supply pipe line 5 even when the pump is in either the first or second rotational position.
In other words, when it is in the first rotation position, the liquid is sent only to the downstream side pipe section 5b of the air supply pipe line 5, as in the third embodiment, but when it is in the second rotation position, the liquid is sent to all the pipes. The liquid can be sent to channels 5 and 6 for cleaning.

Note that an electric pump may be used in the delivery device section of the above embodiment.

As explained above, the present invention first removes the valve body from each on-off control valve on the endoscope side, opens the cylinder, connects the connection port to this opening, and supplies cleaning liquid from the cleaning liquid supply source. Cleaning can be performed by injecting a cleaning liquid into the cylinder and each pipe line communicating with the cylinder. Therefore, simply by connecting the connection port to the opening of the cylinder, the cylinder and the inside of the pipe leading thereto can be easily cleaned. In other words, it is not necessary to operate and hold the opening/closing control valve, and cleaning work can be simplified. Furthermore, since the valve body is removed from the cylinder and the cleaning liquid is injected into it for cleaning, its interior etc. can be thoroughly cleaned.

Furthermore, since the connection port body of the present invention incorporates a switching mechanism that allows communication with the above-mentioned pipe sections to be selected, in addition to cleaning each pipe section, it is also possible to clean some pipes that have parts that are easily clogged, such as air and water supply nozzles. The cleaning liquid can be sent intensively to only the area to powerfully clean it and eliminate blockages. Furthermore, each cleaning can be easily and reliably performed by simply switching the switching mechanism.

[Brief explanation of drawings]

FIG. 1 is a side view showing a schematic configuration of an endoscope that can be used in the first embodiment of the present invention, and FIG. 2 is a sectional view showing an opening/closing control valve in the endoscope.
FIG. 3 is an explanatory diagram showing the overall configuration of a cleaning device as a first embodiment of the present invention, and FIG. 4 is a side cross-sectional view showing the connection port body of the cleaning device connected to the endoscope side. Figure 5 is a side sectional view of the connection port body in another state, Figure 6 is a side sectional view of the delivery device section of the cleaning device, and Figure 7 is the channel connection port of the cleaning device. 8 is a side sectional view showing a state in which the body is connected, FIG. 8 is a side view showing the schematic configuration of an endoscope used in the second embodiment of the present invention, and FIG. 9 is a side view of the endoscope used in the third embodiment of the present invention. 10 is a sectional view of the connection port body taken along the line - in FIG. 9; FIG. 11 is a sectional view of the connection port body taken along the line XI-XI in FIG. 9; FIG. 12 is a sectional view of the same part as FIG. 10 above, showing a fourth embodiment of the present invention;
FIG. 3 is a sectional view of the same portion as FIG. 11. 1... Endoscope, 5... Air supply pipe, 6... Water supply pipe, 17... Suction pipe, 21... Suction opening/closing control valve, 22... Opening/closing control for air and water supply. valve, 30
... Cylinder, 31 ... Piston, 71 ... Cylinder, 72 ... Piston, 88 ... Connection port body, 9
3...Channel connection port body, 95...Insertion housing, 96...Pipe line switching member, 97...Switching mechanism, 111...Elastic member for coupling, 112...Elastic cap.

Claims (1)

[Scope of Claims] 1. A conduit divided into a distal end conduit section and a proximal conduit section is incorporated, and a control valve for opening and closing the conduit is provided between the conduit sections, and this control valve In an endoscope conduit cleaning device that cleans the conduit by sending a cleaning liquid into the conduit of an endoscope, the device having a piston removably installed in a cylinder that opens to the outside and communicates with both conduits, a cleaning liquid supply source, a delivery means for sending the cleaning liquid from the cleaning liquid supply source, a connection port connected to the delivery means and watertightly connected to the cylinder from which the piston has been removed, and supplying the cleaning liquid into the cylinder; An endoscope conduit cleaning device characterized by comprising a switching mechanism incorporated in the connection port body and capable of selecting communication with the conduit section. 2. The delivery means includes a suction pipe that is connected to the cleaning liquid supply source and has a check valve that allows only the cleaning liquid from the cleaning liquid supply source to pass through, and a non-return pipe that is connected to the connection port body and has a check valve that allows only the flow of cleaning liquid from the cleaning liquid supply source to flow therethrough. A patent claim comprising: a delivery passage having a valve; a pressure supply chamber communicating with the suction pipe and the delivery passage; and a manual pump connected to the pressure supply chamber for suction and pressure delivery. The cleaning device for an endoscope conduit according to item 1.