JPH0668717U - Water supply line switching device for endoscope - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a sanitary endoscope water line switching device that can reliably clean both inside of the water pipe for cleaning the observation window and for cleaning the front part by brushing after the inspection. The purpose is to do. A switching valve 46 is detachably attached to a cylinder body 41, and an inlet of an observation window cleaning water supply pipe 36, an inlet of a front cleaning water supply pipe 38, and an outlet of a common water supply pipe 28 are switching valves. The observation window cleaning water supply pipe 36, the front cleaning water supply pipe 38, and the common water supply pipe 28 are diagonally connected to the cylinder body 41 so that the water discharge pipe 46 faces the opening of the cylinder body 41 when removed. did.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a water supply conduit switching device for an endoscope capable of switching between water supply to the surface of the observation window and water supply to the front of the observation window.

[0002]

[Prior art]

 When the endoscope is inserted into the body cavity, mucus adheres to the surface of the observation window and interferes with observation. Therefore, it is necessary to wash the surface of the observation window by sending water toward the surface of the observation window.

In addition, in the large intestine or the like, in some cases, the intestinal mucosa cannot be observed because dirt or the like adheres to the intestine, which is the object to be observed. Need to be washed away.

Therefore, at the tip of the insertion part of the colonoscope or the like, there are an observation window cleaning water supply nozzle that opens toward the surface of the observation window and a front cleaning water supply nozzle that opens toward the front of the observation window. It is provided.

It is necessary to jet water as vigorously as possible from this front washing water supply nozzle. Therefore, in the past, a syringe was used to send water to the front washing water supply nozzle, and the water was pushed out toward the front washing water supply nozzle by hand.

This is a method adopted because the pressure of a pump that is standardly equipped in a light source device or the like for sending water to a water supply nozzle for cleaning an observation window is too low for front cleaning. , An assistant was required to operate the syringe, and the operability was poor.

Therefore, in recent years, the pressure of the pump has been increased so that the front washing is also improved so that the same pump pressure as in the observation window washing can be used. For example, as shown in Japanese Patent Laid-Open No. 57-89840, The inlet of the observation window water pipe for feeding water to the window washing water nozzle, the inlet of the front washing water pipe for feeding water to the front washing water nozzle, and the outlet of the common water pipe to which water is fed. By connecting to the common cylinder body in the operation part and rotating the switching valve inserted in the cylinder body, either the observation window cleaning water pipe or the front cleaning water pipe can be selectively used as the common water pipe. It was connected so that water for the observation window cleaning and water for the front cleaning could be supplied by the pressure of the pump.

[0008]

[Problems to be solved by the device]

 It is an extremely important issue in recent years to completely clean the endoscope after it is used, not only on the outer surface of the endoscope, but also on the water pipe where dirt inside the body may flow back from the tip opening. It is necessary to clean the inside as well.

In order to reliably clean the inside of such a water supply pipe, it is necessary to brush the inside of the pipe. However, since a tapered nozzle is provided at the tip opening of the water supply pipe, the cleaning brush cannot be inserted into the pipe from the tip side.

Therefore, the brush must be inserted from the side of the cylinder body to which the base end of the pipe is connected, but the water supply pipe is connected to the cylinder body in a direction perpendicular to the pipe axis. Even if it was removed from the cylinder body, it was difficult to insert the cleaning brush into the water pipe through the opening of the cylinder body.

Therefore, conventionally, when the inside of the water pipe cannot be cleaned by brushing, the next patient is inspected without removing the dirt and the like adhering to the inside of the water pipe, resulting in unsanitary conditions. was there.

Therefore, the present invention provides a sanitary endoscope water line switching device capable of surely cleaning the inside of both the observation window cleaning and front cleaning water pipes by brushing after the inspection. The purpose is to

[0013]

[Means for Solving the Problems]

 In order to achieve the above object, the device for switching a water supply conduit of an endoscope of the present invention supplies water to a water supply nozzle for cleaning an observation window that opens toward the surface of the observation window provided at the tip of the insertion section. Of the observation window cleaning water supply pipe, the inlet of the front cleaning water supply pipe for supplying water to the front cleaning water supply nozzle that opens toward the front of the observation window, and the common water supply pipe. By connecting the outlet of the water pipe to a common cylinder body and operating a switching valve that is inserted into the cylinder body and operated from the outside, inside the cylinder body, the water supply pipe for cleaning the observation window and the front cleaning In a water pipe switching device for an endoscope, in which any one of the water pipes for use is selectively connected to the common water pipe, the switching valve is detachably attached to the cylinder body, and For cleaning the observation window above The inlet for the water pipe, the inlet for the front cleaning water pipe, and the outlet for the common water pipe are oriented so as to face the opening of the cylinder body when the switching valve is removed. The water pipe, the front cleaning water pipe, and the common water pipe are obliquely connected to the cylinder body.

[0014]

【Example】

 An embodiment will be described with reference to the drawings. FIG. 2 schematically shows the endoscope 1 and the air supply pump 2 and the like connected thereto.

The air supply pump 2 can adjust the pump pressure in three stages of strong, medium, and weak, and is provided so as to discharge air into the water supply bottle 3. Water is filled in the water bottle 3, and an airtight stopper is provided at the upper end opening.

The connector 4 of the endoscope 1 is connected to the light source device, but the inlets of the air supply pipe 5 and the water supply pipe 6 are open to the side of the connector 4, and the opening and the water bottle. 3 and 3 are connected via a connecting pipe 7. The suction connection pipe and the like are not shown.

The inlet of the water supply connection pipe 7b opens in the water in the water supply bottle 3, and the inlet of the air supply connection pipe 7a opens in the air layer portion in the water supply bottle 3 above the water surface. An observation window 12 is provided at the front end 11a of the insertion portion 11 of the endoscope 1 toward the front, and a solid-state image sensor 14 is provided at an image-forming position of an objective optical system 13 arranged inside thereof. There is.

The image signal output from the solid-state imaging device 14 is processed by a video processor (not shown), and an observation image is displayed on the monitor. However, the present invention may be applied to an endoscope of a type in which image transmission is performed by an image guide fiber bundle.

An observation window cleaning water supply nozzle 16 and an air supply nozzle 17 for cleaning the surface of the observation window 12 are arranged at the distal end 11 a of the insertion portion so as to open toward the surface of the observation window 12. There is. Further, a front cleaning water supply nozzle 18 for cleaning the subject by jetting water vigorously toward the center of the observation field of view is provided so as to open toward the front of the observation window 12.

The proximal end side of the insertion portion 11 is connected to the operation portion 21 via the connection portion 20. The operation unit 21 is provided with an air supply / water supply operation button 22 and a suction operation button 23 juxtaposed to each other, and a plurality of remote control switches 24 for remotely controlling the video processor. In addition, a bending operation mechanism for bending the distal end side portion of the insertion section 11 by remote control is also provided in the operation section 21, but the illustration thereof is omitted.

An air / water switch device 26 is provided inside the air / water operation button 22, and includes an outlet of the air supply pipe 5 and an outlet of the water supply pipe 6, and an inlet of the air supply pipe 27 and a common water pipe 28. The entrance is connected.

This air / water switching device 26 is the same as that described in the embodiment of Japanese Utility Model Application No. 4-4158, filed on July 2, 1992, and each pipe 5, 6, 27, 28 is connected to the cylinder body of the air / water switching device 26 in an oblique direction or in the same direction as the shaft.

By operating the air / water supply button 22, a standby state in which both the inlet of the air supply pipe 27 and the inlet of the common water supply pipe 28 are closed, and the air supply pipe 5 and the air supply pipe 27 are communicated with each other. The gas state and the water supply state in which the water supply pipe 6 and the common water supply pipe 28 communicate with each other are switched.

Reference numeral 30 denotes a forceps insertion port portion projecting from the connecting portion 20 so as to communicate with the proximal end portion of the forceps channel 31 opening at the insertion portion distal end 11 a, and a rubber cap-shaped forceps plug 32 is provided. It is attached to the mouth.

The observation window cleaning water supply pipe 36 connected to the observation window cleaning water supply nozzle 16 and the front cleaning water supply pipe 38 connected to the front cleaning water supply nozzle 18 respectively pass through the inside of the insertion portion 11. Then, in the connecting portion 20, it is connected to the common water supply pipe 28 via the water supply pipe line switching device 40.

3 and 4 show the connecting portion 20 in an enlarged manner. Between the mouth of the forceps channel 31 and the forceps plug 32, a suction tube 39 communicating with a suction switching device (not shown) inside the suction operation button 23 is connected. Since the forceps insertion port portion 30 is not directly related to the present invention, detailed description thereof will be omitted.

In the water supply line switching device 40, a bottom block 41b attached to the tubular portion 41a of the cylinder body 41 with a fixing nut 42 so as to close the bottom portion thereof is provided with an operating portion as shown in FIG. It is fixed to the frame 21a of 21 with screws. 43 and 44 are O-rings for sealing.

In the cylinder body 41, a switching valve 46 is inserted into the bottom block 41b from the mouth side of the tubular portion 41a that opens outward. The switching valve 46 is rotatably fitted in a recess formed in the bottom block 41b. 47 is an O-ring for sealing.

As shown in FIG. 5, the outlet of the common water supply pipe 28 is connected to the bottom block 41b from one side, and from the opposite direction, the inlet of the observation window cleaning water supply pipe 36 and the front cleaning transmission pipe 36 are connected. The inlet of the water pipe 38 is connected.

However, as shown in FIG. 3, the pipes 28, 36, 38 are obliquely connected to the cylinder body 41 so that their openings are directed toward the mouth of the opening of the tubular portion 41b. ing.

The tip portion of the switching valve 46 located inside the bottom block 41b communicates with the three pipes 28, 36, 38 connected to the bottom block 41b as shown in the sectional view of FIG. A Y-shaped communication hole 49 is formed such that

Therefore, in the state shown in FIG. 5, the common water supply pipe 28 communicates with both the observation window cleaning water supply pipe 36 and the front cleaning water supply pipe 38 through the communication hole 49 to perform the air supply / water supply operation. When the button 22 is set to the water supply state, water is ejected from both the observation window cleaning water supply nozzle 16 and the front cleaning water supply nozzle 18.

Then, as shown in FIG. 6, when the switching valve 46 is rotated so that only the common water supply pipe 28 and the observation window cleaning water supply pipe 36 communicate with each other, water is supplied only from the observation window cleaning water supply nozzle 16. When the switching valve 46 is rotated so that only the common water supply pipe 28 and the front cleaning water supply pipe 38 communicate with each other, as shown in FIG. 7, water is ejected only from the front cleaning water supply nozzle 18. . In each figure, W means for observation window cleaning and J means for front cleaning.

Returning to FIGS. 3 and 4, the cap 50 is screwed from the outside to the mouth of the cylinder portion 41 a of the cylinder body 41. Reference numeral 51 denotes a rubber packing for sealing which is sandwiched between the outer surface of the connecting portion 20 and the cap 50. The cap 50 also has a rubber lining 50a on the outer surface side.

An operation knob 57 is fixed to the projecting end portion of the switching valve 46 protruding outward from the center of the cap 50 with a screw, and the switching knob 46 is rotated by manually rotating the operation knob 57. Then, it is possible to perform the above-mentioned operation of switching the water supply line. The outer surface of the operation knob 57 is covered with a plastic cover 57a.

FIG. 8 shows a state in which the operation knob 57 is viewed from the front, and the double index 52 formed on the operation knob 57 is changed to the double index 53 of the JW mark formed on the surface of the connecting portion 20. If combined, the observation window cleaning and front cleaning shown in FIG. 5 will be performed together, and if the single index 54 formed on the operation knob 57 is aligned with the W-marked index 55 on the surface of the connecting portion 20, FIG. When the observation window is washed as shown in FIG. 7 and the single index 54 of the operating knob 57 is aligned with the J-marked index 56, the forward washing is performed as shown in FIG.

Returning to FIG. 3 again, the switching valve 46 and the cylinder portion 41 a of the cylinder body 41 are provided with a click mechanism at an inner portion covered with the cap 50. That is, a click ball 61 and a click spring 62 that urges the ball 61 are attached to the switching valve 46 side, and a click plate 64 having a click groove 63 is screwed to the cylinder portion 41a side. Has been done.

As shown in FIG. 9, the click groove 63 is formed in a Y shape corresponding to the shape of the communication hole 49 formed in the switching valve 46, and as shown in FIG. 10, the click groove 63 is formed. At the position where the click ball 61 engages with 63, the rotation of the switching valve 46 stops in a stable state. The three rest positions correspond to the states of FIGS. 5, 6 and 7 described above.

As shown in FIG. 1, when the cap 50 is loosened from the threaded portion of the tubular portion 41 a, the switching valve 46, the operating knob 57 and the cap 50 can be integrally removed from the cylinder body 41. it can.

Then, from the mouth of the opening of the tubular portion 41 a of the cylinder body 41, the outlet of the common water pipe 28 that opens to the bottom block 41 b, the inlet of the observation window cleaning water pipe 36, and the inlet of the front cleaning water pipe 38. And can be seen obliquely, and as a result, as shown in FIG. 1, the cleaning brush 70 can be inserted into each of the tubes 28, 36, 38 from the mouth of the opening of the tubular portion 41a.

Therefore, every time the endoscopic examination is completed for one floor, the cap 50 is removed, the cleaning brush 70 is inserted from the opening mouth of the cylindrical portion 41 a of the cylinder body 41, and the common water pipe 28, The insides of the observation window cleaning water supply pipe 36 and the front cleaning water supply pipe 38 can be reliably cleaned by brushing.

The cleaning brush 70 can also be inserted into the communication hole 49 formed at the tip of the switching valve 46 to clean the communication hole 49 by brushing.

[0043]

[Effect of device]

 According to the water supply pipe line switching device for an endoscope of the present invention, when the switching valve is removed from the cylinder body, the water supply pipe for observation window cleaning, the water pipe for cleaning observation window, and the water pipe for front cleaning are opened from the opening of the cylinder body. Since it is possible to insert a cleaning brush into the pipe, it is possible to reliably clean the inside of each water pipe by brushing each time the endoscopic inspection is completed, and dirt and mucus adhered to the inside of the pipe during the previous inspection. Can be completely removed for a sanitary inspection.

[Brief description of drawings]

FIG. 1 is a side sectional view showing a cleaning state of a water supply conduit switching device for an endoscope according to an embodiment.

FIG. 2 is a schematic diagram of the entire endoscope of the embodiment.

FIG. 3 is a side sectional view of a connecting portion of the endoscope of the embodiment.

FIG. 4 is a plan sectional view of a water supply conduit switching device for an endoscope according to an embodiment.

FIG. 5 is a diagram illustrating a switching state of the water supply conduit switching device for the endoscope according to the embodiment.

FIG. 6 is an explanatory view of a switching state of the water supply conduit switching device of the endoscope according to the embodiment.

FIG. 7 is a diagram illustrating a switching state of the water supply conduit switching device for the endoscope according to the embodiment.

FIG. 8 is a front view of an operation knob portion of the water supply conduit switching device for the endoscope of the embodiment.

FIG. 9 is a plan view of a click plate of the water supply conduit switching device for an endoscope according to the embodiment.

FIG. 10 is a side view of the click plate of the water supply conduit switching device for an endoscope according to the embodiment.

[Explanation of symbols]

 28 Common Water Pipe 36 Water Pipe for Observation Window Washing 38 Water Pipe for Front Washing 40 Water Pipe Line Switching Device for Endoscope 41 Cylinder 41a Cylinder 41b Bottom Block 46 Switching Valve

Claims (1)

[Scope of utility model registration request] 1. An inlet of an observation window cleaning water supply pipe for supplying water to an observation window cleaning water supply nozzle that is opened toward the surface of the observation window provided at the tip of the insertion section, and is directed toward the front of the observation window. Connect the inlet of the water pipe for front washing for sending water to the water nozzle for front washing that opens at the same time and the outlet of the common water pipe to which water is sent to the common cylinder body, and insert it into the cylinder body. By operating a switching valve operated from the outside in the cylinder body, either one of the observation window cleaning water pipe and the front cleaning water pipe is selectively connected to the common water pipe. In the water supply pipe line switching device for an endoscope described above, the switching valve is detachably provided to the cylinder body, and the inlet of the observation window cleaning water pipe, the front cleaning water pipe inlet, and the common pipe are provided. Water pipe The observation window washing water pipe, the front washing water pipe, and the common water pipe so that the mouth faces the direction of the opening of the cylinder body when the switching valve is removed. A water supply line switching device for an endoscope, which is connected obliquely to the.