JPH1033477A - Cleaning device of endoscope channel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To steadily and efficiently clean all the endoscope channels jointed to a valve device. SOLUTION: Onto the cylinder of the air/water feed valve (or suction valve) is attached a bearing 15 to which applied a movable shaft 16 to move free up and down, then a main channel F1 , drain channel F2 , F4 and suction channel F3 , F5 are processed onto the movable shaft 16. The channel F2 , F3 are made to lead to water tubes attached to the front and rear of the cylinder while the channel F4 , F5 are made to lead to the air tubes front and rear. In these channels F2 -F5 are put check valves 18-21 facing the current toward the top. By this means, the front and rear water tubes are cleaned when you set the movable shaft 16 down position to feed or suck washing water by an injector from an injection hole 16A upward as well as the air tubes are cleaned when you set the movable shaft 16 upward.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endoscope conduit cleaning device, and more particularly to a conduit for supplying air / water to a distal end portion and a conduit for suctioning from the distal end portion. The present invention relates to a pipe cleaning device applied to a part of a gas / water supply valve and a suction valve.

[0002]

2. Description of the Related Art In an endoscope, air or water (such as saline) is supplied to an observation window or the like from an air supply / water supply nozzle at a distal end portion. And the like can be sucked. For this purpose, a plurality of conduits are disposed in the endoscope, and an air supply / water supply valve device for performing a switching operation when supplying air or water is provided in the operation unit, and a suction device for performing an operation during suction. A valve device and the like are provided.

FIG. 6 shows the configuration of the above-described air / water supply valve device.
It is composed of a piston part 1 and a cylinder part 2. In FIG. 6, the cylinder (cylindrical) part 2 is buried in an operation part 3, and the cylinder part 2 has a water supply pipe 4A directed to the tip end side.
Water pipe 4B toward the tank side, and air pipe 5 toward the front end
A, the air supply pipe 5B facing the tank side is connected and fixed. An attaching / detaching portion 2K having a slightly larger diameter than the lower cylinder is formed on the upper portion of the cylinder portion 2.

On the other hand, the piston portion 1 is attached to the detachable portion 2
K has a bearing 7 formed on the lower side, and a piston shaft 9 provided with an operation button 8 on the bearing 7.
Are mounted to be vertically movable and urged upward by a spring 10. The piston shaft 9 is provided with a flow path E1 vertically penetrating at the center of the shaft, and a flow path E2 of a circumferential groove formed at a range of 360 degrees on the side surface.

According to the above configuration, the piston portion 1 can be detachably attached to the cylinder portion 2 by fitting the fitting portion 7K to the attaching / detaching portion 2K. When the piston unit 1 is mounted, the piston shaft 9 is disposed at the position indicated by a dashed line in the figure, and in this state, the air supply pipes 5A and 5B are opened, and the flow path E1 of the piston shaft 9 is opened.
By closing the upper part of the air supply, air sent from the light source pump through the air supply pipe 5B can be introduced into the air supply pipe 5A and supplied to the tip nozzle. On the other hand, when the operation button 8 is pressed downward, the flow path E2 of the piston shaft 9 moves downward in the cylinder portion 2 to open the water supply pipes 4A and 4B, and the water is transmitted from the tank side. Water sent via the water pipe 4B can be introduced into the water pipe 4A and supplied to the tip nozzle.

By the way, in such an endoscope, after use, the above-mentioned water supply pipes 4A and 4B, air supply pipes 5A and 5B, a suction pipe, or another pipe are used by using a syringe or the like. Cleaning is performed. That is, in the case of the air supply / water supply pipes 5 and 4 described above, first, the piston unit 1 of the valve device described above is removed from the cylinder unit 2 and the cylinder unit 2 is removed.
The tip of the syringe is inserted and placed inside. In this syringe,
Wash water is filled, and the syringe is operated to send wash water from the inside of the cylinder unit 2 to the water supply pipes 4A and the air supply pipes 5A and 5B to clean the inside of each pipe.

[0007]

However, in the above-mentioned cleaning of the endoscope inner pipe, since various pipes are to be washed at once, a check valve is provided in the middle of the pipe. In some cases, there has been a problem that reliable and efficient cleaning cannot be performed. That is, the air / water pipe 5,
In the case of No. 4, the water pipe 4 and the air pipe 5 have different diameters and lengths, and if cleaning water is simultaneously fed into both pipes, the longer pipe or the thicker pipe will have its ends changed. The washing water does not reach the part, and good washing cannot be performed.

In some cases, a check valve is provided on the supply side of the air / water supply from the valve device shown in FIG. 6. For example, when a check valve is provided in the water supply pipe 4B, this check valve is provided. The water pipe 4B is not washed. Therefore, in this case, it is necessary to separately perform cleaning from the supply side of the water supply, which is not efficient.

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above problems, and has as its object to provide an endoscope which can surely and efficiently clean all of the endoscope channels connected to a valve device. It is an object of the present invention to provide a mirror channel cleaning device.

[0010]

According to a first aspect of the present invention, there is provided an endoscope pipeline cleaning apparatus.
A pipe cleaning device fitted to a cylinder section of a valve device for controlling flow in a pipe of an endoscope, wherein the pipe cleaning apparatus communicates with each of a plurality of pipes connected to the cylinder section. A plurality of flow paths formed so as to be either for discharge or for suction, a main flow path connected to the plurality of flow paths, and for supplying cleaning water from the outside, A check valve that is provided for the flow path and the flow path that is used for suction, and that prevents backflow of the fluid. The cleaning water is supplied to one of the plurality of conduits through the discharge flow passage, and the suction water is applied from the outside through the main flow passage, so that the cleaning water is supplied to the other one of the plurality of conduits. One of the pipes is caused to flow from the outer open end of the pipe, and the washing water is supplied to the suction channel. Through, characterized in that so as to suction into the main path. According to a second aspect of the present invention, the shaft section having the plurality of flow paths and the main flow path is mounted on a bearing so as to be vertically movable, and the discharge flow path and the suction pipe are selectively connected to the cylinder section. And a switching connection. A third aspect of the present invention is characterized in that a syringe barrel port for arranging a syringe barrel is provided at an outer end of the main flow path.

According to the above configuration, a flow path whose flow direction is controlled by the check valve is provided for each of the plurality of pipes. For example, a certain series of pipes attached to the cylinder portion is provided. When divided into a front (front end) pipe and a rear (tank) pipe, a discharge flow path and a check valve are formed in communication with the front pipe, and a suction flow is formed in communication with the rear pipe. A passage and a check valve are formed. Therefore, for example, when the washing liquid is supplied to the main flow path by the syringe, the cleaning liquid is supplied from the discharge flow path to the front pipe, and the pipe is washed. Thereafter, when the syringe is sucked in a state where the tank side of the rear pipe is immersed in the washing water, the washing water is passed from the tank side to the cylinder in the rear pipe, whereby the pipe is removed. Is washed.

According to the second aspect of the present invention, when there are two pairs of the front side pipeline and the rear side pipeline, the shaft portion is moved up and down to thereby form the discharge channel and the suction channel. The configuration is such that the pipes can be switched for each pair, and the water pipe, the air pipe, and the like can be individually washed.

[0013]

FIG. 1 shows a configuration of an endoscope conduit cleaning apparatus according to an embodiment of the present invention. FIG. 2 shows a configuration relating to a flow path of a piston shaft, and FIG. The configuration of the switching operation unit is shown, and FIGS. 4 and 5 show a state where the cleaning device is attached to the cylinder unit. First, the structure of the air supply / water supply pipe in the endoscope will be described with reference to FIG. As shown in the figure, in the endoscope, a front side water supply pipe 4 </ b> A and a front side water supply pipe 4 </ b> A are provided between an injection nozzle 12 disposed at a distal end and a cylinder part 2 of an air supply / water supply valve apparatus disposed at an operation unit 3. Air pipe 5
A is disposed, and between the cylinder portion 2 and the tank receiver on the light source device side, a water supply pipe 4B and an air supply pipe 5B on the rear side are disposed. The air supply pipe 5B also extends from the insertion portion of the light source device to the light source pump. Connected. Then, as described with reference to FIG. 6, the piston portion (1) provided with the operation button (8) is disposed on the attaching / detaching portion 2K of the cylinder portion 2.

According to such a structure of the air supply / water supply line, the air supply operation (the flow path E1) is performed by the piston (1) in FIG. 6 in a state where the air at a predetermined pressure is supplied from the light source pump. When the upper part is closed, air is supplied using the air supply pipes 5A and 5B, and when the water supply operation is performed (the piston shaft 9 is pushed down while closing the flow path E1), the tank is provided using the water supply pipes 4A and 4B. Water is supplied from.

Next, the cleaning device 14 shown in FIG. 1 has a structure in which a cylindrical movable shaft 16 is mounted on a bearing 15 so as to be movable up and down.
Is sized to fit into the detachable part 2K of the cylinder part 2, and a packing or the like is arranged. In addition, the movable shaft 1
In 6, an injection barrel opening 16 </ b> A into which the tip of a syringe barrel (syringe) is fitted is provided on the upper part, and a main flow path F <b> 1 is formed along the central axis of the movable shaft 16 by connecting to the syringe barrel port 16 </ b> A.

As shown in the enlarged view of FIG. 2, the first discharge passage F2 is connected to the main passage F1.
, A first suction pipe line F3 is provided, and these flow paths F2 and F3 are connected to the movable shaft 16 as shown in FIG.
Is located at a position that communicates with the water pipe 4 when is at the lower position. These flow paths F2 and F3 are constituted by holes formed in two places at 180-degree intervals on the side surface of the movable shaft 16 and grooves formed in the circumferential direction. Note that the circumferential groove may be formed over the entire 360 degrees, or may be formed in an appropriate angle range.

Further, a second discharge channel F4 and a second suction channel F5 are formed by connecting to the main channel F1, and these channels F4 and F5 are formed as shown in FIG. In addition, when the movable shaft 16 is at the upper position, it is arranged and formed at a position communicating with the air supply pipe 5. That is, the lower part from the chain line 100 in FIG. 2 is shown rotated 90 degrees from the upper part, and the flow path F4 is formed on the bottom side of the movable shaft 16,
The flow path F5 is formed at intervals of 180 degrees similarly to the flow path F2 and the like.
It is composed of a hole in the side surface penetratingly formed at a location and a groove formed in the circumferential direction, and the position of this hole is shifted by 90 degrees from the flow path F2 and the like.

Further, each of the flow paths F2, F3 and F5 is provided with check valves 18 to 20 at two holes.
One check valve 21 is provided in the flow path F4, and the check valves 18 and 20 of the discharge flow paths F2 and F4 prevent the inflow into the movable shaft 16, and the check flow paths of the suction flow paths F3 and F5. Check valve 19, 2
Numeral 1 prevents outflow from the movable shaft 16. As such check valves 18 to 21, various check valves can be applied, such as those constituted by a rubber-like valve, those which are closed by a moving ball at the time of backflow.

As described above, in the embodiment, two pairs of flow paths F2 to F5 are provided corresponding to the water supply pipe 4 and the air supply pipe 5, but these flow paths F2 to F5 are switched and selectively used. Is done. That is, FIG. 1 shows a set state when the water supply pipe 4 is washed. As shown in the drawing, a collar 16B formed in the upper middle part of the movable shaft 16 is inserted into a switching groove 23 formed in the inner periphery of the bearing 15. The position is the water pipe cleaning position W.

That is, as shown in FIG. 3A, the switching groove 23 is formed above the internal member 15B of the bearing 15, and the switching groove 23 is fitted to the switching groove 23. Both side surfaces of the flange 16B are cut. In addition, the water pipe cleaning position W on the upper surface of the internal member 15B,
A mark of the air pipe cleaning position A is engraved on the bottom surface of the switching groove 23. The above-described setting state of the water pipe cleaning position W is as shown in FIG.
6B is fitted in the switching groove 23, and the movable shaft 16 is disposed on the lower side. On the other hand, from the state shown in FIG.
Is lifted and rotated 90 degrees, and the collar 16B is placed on the upper surface of the inner member 15B to obtain the state shown in FIG.

The embodiment has the above-mentioned structure. Next, the cleaning operation will be described with reference to FIGS. FIG. 4 shows how the water pipe 4 is washed. In this case, as shown in FIG. 4B, the flange 16B of the movable shaft 16 is attached to the bearing 15 (the internal member 15B) so that the mark W can be seen. It is fitted into the switching groove 23 and set at the water pipe cleaning position W. At this time, the first discharge channel F2 is provided in the front water supply pipe 4A.
The first suction passage F3 is connected to the rear water supply pipe 4B. Then, the tip of the syringe filled with the washing liquid is inserted into the upper syringe opening 16A, and the washing liquid is injected into the main flow path F1, and the washing liquid is opened from the first discharge flow path F2 by opening the check valve 18 to the front side. The water flows into the water pipe 4A and flows to the tip. Thereby, the water pipe 4A is cleaned, and this operation can be repeated as many times as necessary.

On the other hand, when the tank side of the rear water pipe 4B is immersed in the cleaning liquid in the tank and the suction pipe is used to suck the cleaning liquid, the cleaning liquid flows into the water pipe 4B from the tank, and the first suction flow. The washing liquid reaches the inside of the syringe via the passage F3, the check valve 19, and the main flow passage F1. Thus, the rear water pipe 4B can be washed. The washing of the front water pipe 4A may be performed by injecting a new washing liquid into the syringe as described above, or may flow from the tank into the syringe when washing the rear water pipe 4B. The cleaning liquid thus made may be used for cleaning the front water pipe 4A, and this cleaning operation may be repeated.

FIG. 5 shows how the air supply pipe 5 is washed. In this case, the movable shaft 16 is pulled upward from the state shown in FIG. 4 and rotated by 90 degrees, as shown in FIG. To
With the mark A visible, the collar 16B is
It is arranged on the upper surface of B and set at the air pipe cleaning position A. At this time, a second discharge channel F4 is provided in the front air supply pipe 5A.
A second suction passage F5 is connected to the rear air supply pipe 5B. Then, when the cleaning liquid is injected from the syringe, the cleaning liquid flows from the second discharge channel F3 into the air supply pipe 5A on the front side by opening the check valve 20 and flows to the tip. This allows
The air supply pipe 5A is cleaned.

On the other hand, if the rear side air supply pipe 5B is sucked by a syringe while the tank side is immersed in the cleaning liquid in the tank, the cleaning liquid flows from the tank into the air supply pipe 5B, and the second suction pipe is formed. The cleaning liquid is introduced into the syringe via the flow path F5, the check valve 21, and the main flow path F1, and thereby, the rear air supply pipe 5B can be cleaned.

As described above, according to this embodiment, the pipes provided in the cylinder section of the valve device can be separately cleaned, and even if the pipes have different diameters and lengths, Reliable washing can be performed. In this case, the check valves 18 to 21 prevent backflow of dirty washing water,
Cleaning will be performed efficiently. In addition, the check valve serves to set the supply direction of the cleaning water. In this example, by flowing the cleaning water toward the front end portion, the front end side, which is more contaminated than the rear end side, can be efficiently cleaned. In addition, in the case of the air / water supply pipe, the cleaning water is supplied in the same direction as the supply direction when the endoscope is used, and a check valve is provided in the middle of the rear water supply pipe 4B or the air supply pipe 5B. , It is possible to perform good cleaning.

In the flow paths F2, F3, and F5 of the above-described embodiment, the circumferential grooves formed outside the two through holes are not essential, and need not be provided at all, and may be formed in a small angle range. In this case, the set position of the movable shaft 16 is clarified by a mark or the like, and the flow paths F2, F3, F5
Can be reliably connected to each pipeline. However, when the circumferential groove is provided, there is an advantage that the circumferential alignment is not required.

In the above embodiment, the case where the present invention is applied to the air / water pipes 5 and 4 has been described. However, the present invention can also be applied to a suction pipe in an endoscope and other pipes. That is, for example, in a suction pipe, a pair of front and rear suction pipes connected to a cylinder portion of a suction valve device are provided with a discharge channel and a suction channel so as to communicate with each other. Place a check valve on the road. Thereby, similarly to the above case, the front suction tube and the rear suction tube can be separately washed.

Further, the washing apparatus described in the above embodiment can be constructed by integrally forming the injection cylinder.

[0029]

As described above, according to the first and third aspects of the present invention, a plurality of pipes of the cylinder unit are formed so as to fit into the cylinder unit of the valve device. A discharge flow path and a suction flow path are arranged so as to communicate with the water, a check valve is provided in these flow paths, and washing water is supplied from the main flow path using the discharge flow path and the suction flow path. Since each pipe is separately supplied, all pipes connected to the valve device can be reliably washed.In addition, by setting the supply direction of the washing water, a check is made halfway through the pipes. Cleaning water can be supplied even when a valve is provided, and efficient cleaning can be performed.

According to the second aspect of the present invention, the shaft having the flow passage formed therein is vertically movably mounted, and the flow passage is selectively switched and connected to the conduit of the cylinder portion. Even when there are two types (two pairs) of pipelines, there is an advantage that each pipeline can be reliably washed.

[Brief description of the drawings]

FIG. 1 shows a configuration of an endoscope duct cleaning apparatus according to an embodiment of the present invention, wherein FIG. 1 (A) is a longitudinal sectional view and FIG. 1 (B) is a top view.

FIG. 2 is an enlarged sectional view showing a flow path of a movable shaft and a check valve in the apparatus of FIG.

FIG. 3 is a perspective view showing a configuration of a switching operation unit in the apparatus of FIG.

FIG. 4 is a view showing a state in which the apparatus of FIG. 1 is applied to an endoscope, and is an operation diagram when a water pipe is washed.

FIG. 5 is a view showing a state in which the device of FIG. 1 is applied to an endoscope, and is an operation diagram when the air supply pipe is cleaned.

FIG. 6 is a partial cross-sectional view showing a configuration of a conventional endoscope valve (air / water supply valve) device.

[Explanation of symbols]

 2, ... cylinder part, 2K ... detachable part, 4A, 4B ... water supply pipe, 5A, 5B ... air supply pipe, 14 ... cleaning device, 15 ... bearing, 15B ... internal member, 16 ... movable shaft, 16A ... injection port, 16B ... collar, 23 ... switching groove, 18-21 ... check valve, F1 ... main flow path, E1, E2, F2-F5 ... flow path.

Claims (3)

[Claims] 1. A pipeline cleaning device fitted to a cylinder portion of a valve device for controlling flow in a pipeline of an endoscope, wherein the pipeline cleaning device includes a plurality of pipelines connected to the cylinder portion. A plurality of flow paths formed to communicate with each other and set for either discharge or suction; and a main flow path connected to the plurality of flow paths for supplying cleaning water from outside. A check valve provided for the flow path for discharge and the flow path for suction, and for preventing backflow of the fluid, and supplying supply pressure from outside via the main flow path. By supplying the washing water to one of the plurality of conduits via the discharge flow path, and applying suction pressure from the outside via the main flow path, the cleaning water is supplied to the plurality of conduits. Into the other one of the pipelines from the external open end of this pipeline,
An endoscope pipeline cleaning device, wherein the cleaning water is sucked into the main channel via the suction channel. 2. A shaft portion having the plurality of flow passages and a main flow passage formed thereon is mounted on a bearing so as to be vertically movable, and the discharge passage and the suction passage are selectively switched and connected to the cylinder passage. 2. The endoscope channel cleaning device according to claim 1, wherein the endoscope channel cleaning device is configured to perform the following. 3. The endoscope channel cleaning apparatus according to claim 1, wherein a syringe barrel port for arranging a syringe barrel is provided at an outer end of the main flow path.