JPH0142206B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a suction control device for an endoscope that performs absorption through two or more channels.

[Background technology and its problems]

Conventionally, an endoscope in which two channels are provided in one endoscope is known (U.S. Patent No. 4270525).
Specification). In this type of endoscope, the entrance portions of each channel communicate with each other, and a cap is removably fitted into the adapter portion of one of the channels. Furthermore, switching between absorption using only one channel and suction using both channels is done by attaching or removing the cap, which makes the switching operation cumbersome. Further, when a treatment instrument is inserted into the channel on the side where the cap is attached/detached, suction cannot be drawn from the channel. Furthermore, when a cap is attached, a treatment instrument cannot be inserted through that channel. Furthermore, since the cap is attached and detached, it is necessary to ensure sufficient fitting force for the cap, which makes the structure very complicated. Furthermore, there is a risk that the cap may come off and interfere with the desired operation. Furthermore, since the structure of the conduit is complicated, there is a drawback that the suctioned material remains in the conduit and tends to become dirty.

[Purpose of the invention]

The present invention has been made focusing on the above circumstances,
Its purpose is to use a relatively simple configuration to quickly switch between suction in one channel and simultaneous suction in both channels with a simple operation, and to enable immediate insertion of treatment instruments into each channel. Another object of the present invention is to provide a suction control device for an endoscope that allows easy cleaning of the inside of a duct.

[Summary of the invention]

Therefore, in the endoscope suction control device of the present invention, two channels are arranged in the endoscope insertion section, and a connecting part is connected to one channel, and a connecting part is inserted into the channel through this connecting part, and the endoscope is inserted into the endoscope. A cap body having an insertion port opening at the side and a side hole communicating with the insertion port is fixed to the mounting hole of the operating section, and a connecting body connected to the other channel is fixed to the operating section, A valve body, which has an insertion port that communicates with the channel and opens to the outside through this connection body, and a side hole that communicates with the insertion port, is rotatably and removably inserted into the mounting port of the operating section. Further, an operating body for rotating the valve body is provided on the return body, and a communication device is provided that is inclined toward the opening of the mounting hole for receiving the valve body and opens at a position opposite to the side hole of the cap body and the side hole of the valve body. It is provided with a hole.

Therefore, the operator can easily select suction using only one channel or simultaneous suction using both channels simply by rotating the valve body with the operating body that protrudes outward. In either case, the treatment instrument can be immediately inserted into each channel. Further, by removing the valve body from the operating section, cleaning can be easily performed by inserting a cleaning tool such as a brush into the conduit including the communication hole.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

FIG. 1 shows the vicinity of the operating section 2 of the endoscope 1, and the operating section 2 has a grip section 3 formed therein. Further, a long and flexible insertion section 4 is connected to one end of the operating section 2, and an eyepiece section 5 is provided at the other end. Furthermore, a light guide cord 6 is connected to the end of the operation section 2 on the eyepiece section 5 side, and an angle operation knob 7, an air/water supply switching valve 8, and a suction control valve 9 are provided. Also,
Insertion openings 13 and 14 of two right and left channels 11 and 12, which will be described later, are opened side by side at the end of the operation section 2 on the insertion section 4 side.

As shown in FIG. 2, the right side channel 11 and the left side channel 12 are arranged in parallel and inserted from the operating section 2 to the insertion section 4, and each tip is opened at the distal end surface of the insertion section 4. ing. Further, a suction channel 15 is connected to the left side channel 12, and the other end of this suction channel 15 is connected to a light guide cord 6 with the suction control valve 9 inserted therebetween, as shown in FIG. guided within. It is connected to an external suction source (not shown) and is sucked by the suction source. The suction control valve 9 is used to open or shut off the suction channel 15 to select whether or not to operate the suction.

On the other hand, each of the insertion openings 13 and 14 is constructed as shown in FIG. That is, a hole 17 is formed in the operation section main body 16, and the switching section main body 18 is fitted into the hole 17 and fixed. Further, two holes 19 and 20 are formed in the switching section main body 18, and a first base tube 21 forming the insertion opening 13 of the light side channel 11 passes through each hole 19. is installed. This first
The base tube 21 is attached and fixed by a tightening ring 22. Further, a tube (not shown) forming the light side channel 11 is connected to the inner end of the first base tube 21. moreover,
A hole 23 is formed in the side wall of the first base tube 21, and this hole 23 corresponds to and communicates with a communication hole 24 that communicates the holes 19 and 20 with the switching section main body 18.

Further, a second mouthpiece tube 25 which also serves as a switching valve element is inserted and attached to the other hole 20. This second base tube 25 also forms the insertion opening 14 of the left side channel 12, and is detachably fitted into the hole 20. Furthermore, a valve hole 26 is provided in the side wall of the second base pipe 25.
is formed, and by rotating the second base tube 25, the valve hole 26 can be aligned with the communication hole 24. In other words, the valve 2 opens and closes the communication hole 24 by rotating the second base pipe 25.
7. Further, a switching lever 28 as an operating body is attached and fixed to the outer end circumferential wall of the second cap pipe 25, which also serves as a switching valve body, and the switching lever 28 is operated from the outside to switch the valve 25.
It is designed to open and close.

Further, a connection cap 29 is connected to the inner end of the second cap pipe 25.
9 is connected to a tube (not shown) forming a left side channel 12. In addition, the third
30 in the figure are O-rings for sealing.

Furthermore, the first and second base pipes 21, 2
A forceps plug 32 made of an elastic body and provided with a notch 31 is attached to the outer end of each of the forceps 5 .
A treatment tool such as forceps is inserted into each of the insertion openings 13 and 14 through a notch 31 of a forceps plug 32.

Although the communicating hole 24 and the hole 23 are in a straight line, their axes are arranged obliquely so as to intersect the central axes of the insertion openings 13 and 14, as shown in FIG. 24 is the second base pipe 25
It opens in the hole 20 from which it was removed. Further, the straight line L along the upper wall of the communication hole 24 is inclined so as to intersect within the opening plane of the hole portion 20 . By doing this, when removing the second cap pipe 25 and cleaning the communication hole 24 and the hole 23, the brush 3
3 can be easily inserted.

Next, the operation of the suction control device of the endoscope will be explained.

First, when suction is performed simultaneously through both channels 11 and 12, the switching lever 28 is used to switch the valve 27 to the second cap pipe 2 as a switching valve body.
5 is rotated to the position shown in FIGS. 3 and 4. That is, the valve 27 is opened and both the insertion openings 13 and 14 are communicated with each other through the communication hole 24. Both channels 11, 12 thus communicate through their communication holes 24 and also communicate with the suction channel 15. Therefore, when the suction control valve 9 is opened, the suction force and its respective channels 1
1, 12, both channels 11, 12
can be suctioned at the same time.

When suction is performed only through one left channel 12, the second mouthpiece 25 serving as a switching valve body of the valve 27 is rotated by 90 degrees using the switching lever 28. As a result, the valve hole 26 is closed by the inner wall surface of the hole portion 20, and the communication hole 24 is closed by the outer surface of the second cap pipe 25. In other words, the valve 27 is closed and the insertion port 1
Interrupt communication between 3 and 14. Therefore, the suction force received from the suction channel 15 acts only on one of the left channels 12.

Normally, the device is switched to the one that allows suction through only the left channel 12, and the other right channel 11 is used for inserting a treatment instrument. In this case, even if suction is applied while the treatment instrument is being inserted, the treatment instrument etc. will not be contaminated by the suction material. Therefore, when puncturing an injection or the like into a tissue, it is possible to prevent dirt from entering the tissue and causing damage to the living body.

On the other hand, if a large amount of suction is urgently required, rotate the switching lever 28 while holding the treatment instrument to open the valve 27, open the communication hole 24, and apply suction to both channels 11, 12
It is possible to suction from both at the same time, and a large amount can be suctioned.
This switching operation can be easily performed while inserting the treatment tool and holding the treatment tool.

On the other hand, when cleaning the insertion openings 13 and 14, the second base tube 25 is removed and cleaned as shown in FIG. Further, the communication hole 24 is cleaned by inserting a brush 33 through the hole 20 from which the second cap tube 25 has been removed. Therefore, every nook and corner can be cleaned easily and thoroughly.

In addition, the insertion port 1 of each channel 11, 12
Since a treatment instrument can always be inserted into channels 3 and 14, the treatment instrument can be inserted through the respective channels 11 and 12 if necessary, and suction can be performed even when the treatment instrument is inserted.

In addition, if the second base tube 25 is attached to the switching part main body 16 side in a semi-fixed state (of course it can rotate freely) and cannot be easily removed, the second base tube 25 is attached as shown in FIG. It is preferable to use a cleaning adapter 41 that can be fitted into the mouth of the base tube 25. This cleaning adapter 41 is provided with a hole 42 for guiding the brush 33, and this hole 34 is shaped to be connected to the valve hole 26 in a loosely opposing manner. In this way, even when the brush 33 cannot be inserted straight into the communication hole 24, the brush 33 can be easily inserted into the communication hole 24.
You can insert 3.

〔Effect of the invention〕

As explained above, according to the present invention, suction using only one channel and simultaneous suction using both channels can be quickly switched with a simple operation. Further, regardless of the switching state of the valve, the treatment instrument can be inserted through the channel, and restrictions on use are largely eliminated.

Furthermore, since the cap body has the function of a valve and the operating body is attached to this cap body, there is no need to take up more space than necessary for the switching mechanism, and the operation section of the endoscope can be made larger. It also disappears.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an endoscope according to an embodiment of the present invention, FIG. 2 is a schematic diagram showing the channel path, FIG. 3 is a sectional view of the vicinity of the insertion port, and FIG.
The figure is a cross-sectional view taken along the line - in FIG. 3, FIG. 5 is a cross-sectional view showing the insertion port during cleaning, and FIG. 6 is a cross-sectional view of the vicinity of the insertion port in another embodiment of the present invention. . 1... Endoscope, 11... Light side channel,
12...Left side channel, 13...Insertion port, 14...Insertion port, 15...Suction channel, 18...Switching unit main body, 21...First mouthpiece pipe, 24...Communication hole, 25 ...Second base pipe, 2
7...Valve, 28...Switching lever.

Claims (1)

[Claims] 1. Two channels disposed within the endoscope insertion section, one of which communicates with the suction channel, a connecting portion connected to the one channel, and an insertion port that communicates with the channel through this connecting portion and opens to the outside. a base body having a side hole communicating with the insertion opening portion and fixed to the mounting hole of the operating unit; a connecting body connected to the other channel and fixed to the operating unit; and this connecting body. a valve body that is rotatably and removably fitted into a mounting hole of an operating section, the valve body having an insertion port that communicates with the channel through the channel and opens to the outside, and a side hole that communicates with the inside of the insertion port; An operating body provided on the valve body and protruding outward for rotating the valve body, and an operating body that is inclined toward the opening of the mounting hole that receives the valve body and faces the side hole of the base body and the side hole of the valve body. 1. A suction control device for an endoscope, comprising a communication hole that opens at a certain position.