JPH0422091B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an endoscope intrabody cavity pressure adjustment device that is used in an endoscope to adjust the body cavity pressure during observation.

[Prior art] Internal organs in body cavities, such as the gastrointestinal tract, generally have a self-contracting habit, so when examining the inside of a body cavity using an endoscope, it is necessary to Air is pumped through the body, and the pressure is used to inflate the inner walls of the body cavity for observation.

However, if the pressure inside the body cavity becomes too high due to excessive air supply due to cleaning the objective lens surface or due to carelessness on the part of the operator, the inner wall of the body cavity will hyperextend, making it difficult to observe minute changes in the mucous membrane. Not only will it be impossible to do so, but there is also the risk of causing accidents such as damage to the inner walls of the body cavity.

Therefore, in the past, a pressure-sensitive branch line was branched from the middle of the suction line of the endoscope, a pressure detector was installed in the branch line to detect the internal body cavity pressure, and the suction line connected to the suction line was A device is known in which the device is operated by an output signal from a pressure detector to perform suction and automatically reduce the pressure inside the body cavity.

[Problems to be solved by the invention] Not only air but also mucus, blood, and other filth from body cavities are sucked into the suction duct of an endoscope, and these filth often end up on the branch duct side. There was a break-in. This resulted in drawbacks such as the branch pipes becoming clogged and the equipment not working properly, and the inside of the branch pipes being difficult to clean, resulting in hygienic inconveniences such as infection due to residual filth. .

This invention eliminates such conventional drawbacks and
It is an object of the present invention to provide a body cavity pressure adjusting device for an endoscope in which dirt is difficult to enter into a branch pipe.

[Means for Solving the Problems] In order to solve the above-mentioned problems, an endoscope intracavity pressure adjustment device according to the present invention includes a suction tube that communicates between the insertion portion of the endoscope and the suction device. a branch line that branches off from the middle of the suction line and communicates with the pressure detector; an on-off valve that is provided in the middle of the suction line to open and close the suction line; In the body cavity pressure regulating device for an endoscope, the endoscope has a control means that operates based on an output signal to control the operation of the on-off valve, and in the branch part, the suction pipe is arranged substantially horizontally, and the branch pipe is connected to the branch pipe. a lid that is arranged substantially vertically upward and that forms a window on a side surface of the housing that accommodates the branch section, and that the suction pipe line and the branch pipe line are provided inside the window in a detachable and replaceable manner; and a lid that opens and closes the window; It is characterized by having a body.

[Operation] When the pressure inside the body cavity increases, the pressure is detected by the pressure detector, a control signal is output from the control circuit to the on-off valve, and suction is performed to the suction device through the suction conduit. This keeps the pressure inside the body cavity constant. During this suction, filth in the body cavity is also suctioned,
The filth passes through the suction pipe.

At this time, in the device of the present invention, the suction pipe is arranged approximately horizontally, and the branch pipe is arranged substantially vertically upward, so that it is difficult for dirt to enter the branch pipe.
Almost no invasion.

[Example] FIG. 2 is a block diagram of the device of the present invention, in which 1 is an insertion section of an endoscope inserted into a body cavity, and 2 is a block diagram of the device of the present invention.
3 is an operation unit, 3 is a connector connected to an external light source device 4, and a lighting lamp 5 is installed in the light source device 4.
and an air pump 6 are provided. Illumination light enters the illumination light guide 7 of the endoscope from the illumination lamp 5, and gas such as air is sent from the air pump 6 to the air pipe line 8 inserted into the endoscope. The air supply pipe line 8 is connected from the connector 3 to the operating section 2.
It passes through the insertion section 1 and opens at the distal end of the insertion section, and a switching valve 9 is protruded and inserted into the operation section 2 halfway there. This switching valve 9 is a well-known one, and a detailed explanation will be omitted.
communicates with the outside air and the air sent from the air pump 6 is released to the outside, and when the switching valve 9 is pressed with a fingertip, the gap with the outside air is closed and air is sent into the body cavity from the opening 10 at the tip of the insertion section. It is becoming more and more like this. Note that an electric switch or the like may be provided in place of such a switching valve, and an air supply pump that supplies air continuously or whose air supply operation is automatically controlled may be used. Good too.

11 is a forceps channel through which a treatment instrument or the like is inserted, the tip of which opens at the tip of the insertion section 1;
The base end is a forceps insertion port 1 formed at the bottom of the operating section 2.
It is connected to 2. Reference numeral 13 denotes a known forceps plug attached to the forceps insertion port 12, which closes the forceps insertion port 12 when no treatment instruments are inserted. In addition, a suction tube 14 is connected to the forceps channel 11 near the forceps insertion port 12, and the suction tube 14 is connected to an external suction device 15.
The forceps channel 11 and the suction tube 14 form a suction conduit that opens at the distal end of the insertion section 1 . The suction device 15
consists of a suction pump 15a and a suction tank 15b that stores the suction material. Further, a first electromagnetic on-off valve 21 is provided in the middle of the suction tube 14 . As shown in FIG. 3, for example, the first electromagnetic on-off valve 21 is operated by a piston 21b that is directly connected to an electromagnetic device 21a and moves back and forth to open the suction tube 1.
4 is crushed from the side to close the conduit, and since the suctioned dirt does not touch anything other than the inner surface of the suction tube 14, cleaning etc. can be carried out completely.

A branch pipe line 18 is formed in communication with the suction tube 14, and a pressure detection section 16 for detecting the pressure inside the suction tube 14 is provided in the branch pipe line 18. , the forceps channel 11) and the branch line 18, the pressure inside the body cavity is detected. A indicates a branch. Further, a second air supply pump 17 for supplying a small amount of air into the suction tube 14 is provided in the middle of the branch pipe line 18, close to the pressure detector 16, and is connected to the branch pipe line 18 and the suction tube 14. A second electromagnetic on-off valve 22 that opens and closes communication with the tube 14 is provided near the branch A.

19 is a first electromagnetic on-off valve 21 and a suction device 15
It is an open tube that branches off from between and communicates with the outside air, and a third electromagnetic on-off valve 23 is provided in the middle of the tube.

20 is the first to third electromagnetic on-off valves 21, 2
This is a control means for controlling the opening and closing of parts 2 and 23. This control means 20 includes an amplifier circuit 20a that amplifies the output signal of the pressure detector 16, a separately input set value and an output signal from the pressure detector 16, and a drive circuit 20b for each electromagnetic switch. valves 21, 22,
A control circuit 20c outputting a signal for operating 23.
, and a display circuit 20d that displays the control status.

When the pressure inside the body cavity increases, the control circuit 20 outputs a control signal to open the first electromagnetic on-off valve 21 and close the second and third electromagnetic on-off valves 22 and 23 based on the output signal from the pressure detector 16. Then, suction is performed from the tip of the insertion portion through the suction tube 14. This keeps the pressure inside the body cavity constant.

Figure 1 shows the endoscope and suction device 1 of the device of this embodiment.
5 is a side view of the internal pressure regulator main body in which parts other than 5 are mounted in one housing. FIG.

In the figure, 24 is a housing of the internal pressure regulator main body, and the above-mentioned first to third electromagnetic on-off valves 21, 22, and 23 are fixedly installed inside the housing. The tube that passes through these electromagnetic on-off valves is, for example, a thick and short silicon tube 1.
4a, 18a, 19a, and these silicon tubes are made of synthetic resin T-shaped tubes 26, 26.
The T-tubes 26, 26 are connected to each other by
is connected to the middle of the above-mentioned suction tube 14 by short silicon tubes 14b and 14c. By removing the spring clips 27 attached to tighten the above-mentioned connecting portions, the tubes can be freely connected and disconnected. Therefore, each tube can be removed and replaced, and as shown in FIG. 4, this part can also be removed and replaced using a warping unit.

Moreover, among the above-mentioned tubes, tubes 14a, 14b, 14c placed in the middle of the suction line
The tubes 18a, 1 are arranged horizontally and form branch pipes branched by the T-shaped pipes 26, 26.
9a is arranged substantially vertically upward. Therefore, when dirt and the like pass through the suction pipe, it is difficult for the dirt to enter the branch pipe, and almost no dirt enters the branch pipe.

On the other hand, as shown in FIG. 1, a large open window 28 is formed in the housing 24 on the side of the branch part where the above-mentioned tubes and electromagnetic on-off valves 21 and 23 are arranged. The window 28 can be freely opened and closed by a lid body 30 that rotates around the window 29. Therefore, the lid body 30
By opening the tube, you can visually check the branching part, check the state of dirt and the presence or absence of collapse of each tube, and at the same time, replace the tube. Furthermore, window 28
A transparent cover may be attached to the branch, or the lid body 30 may be made of transparent synthetic resin, etc., so that the area around the branch portion can be constantly viewed from the outside.

[Effects of the Invention] According to the endoscopic body cavity pressure adjustment device of the present invention, the suction pipe is arranged substantially horizontally at the branch part, and the branch pipe for pressure sensing is arranged substantially vertically upward. , almost no dirt enters the branch pipe side, so the equipment always operates normally.
It has excellent effects such as no infection or other hygienic problems caused by residual filth.

In addition, a window is formed in the housing that accommodates the branch part, and the suction pipe line and the branch pipe line are provided inside the window so that they can be attached and detached, and a lid body is provided to open and close the window. The window can be closed to protect the branch from the outside, and if necessary, the window can be opened to replace the conduit.Furthermore, since the window is provided on the side of the housing, the horizontal suction The conduit and the branch conduit arranged substantially perpendicularly upward can be easily attached and removed through the window.

[Brief explanation of drawings]

Fig. 1 is a side view of the internal pressure regulator main body used in an embodiment of the present invention, Fig. 2 is an overall block diagram of the embodiment, Fig. 3 is a perspective view of an electromagnetic on-off valve used in the embodiment, and Fig. 4 is a perspective view of an electromagnetic shut-off valve used in the embodiment. The figure is also a perspective view of the tube unit. 1... Endoscope insertion section, 11... Forceps channel,
14... Suction tube, 15... Suction device, 16... Pressure detector, 18... Branch pipe line, 20... Control means, 2
1... Solenoid on/off valve, 26... T-shaped pipe, 27... Clip.

Claims (1)

[Scope of Claims] 1. A suction conduit that communicates between the insertion section of the endoscope and the suction device, a branch conduit that branches off from the middle of the suction conduit and communicates with the pressure detector, and the suction an on-off valve provided in the middle of the pipeline to open and close the suction pipeline;
In the endoscope body cavity pressure adjustment device, the endoscope has a control means that is operated by an output signal from the pressure detector to control the operation of the on-off valve, and the suction pipe is arranged substantially horizontally at the branching part. arranging the branch pipe line substantially vertically upward, forming a window on the side surface of the housing housing the branch part, and providing the suction pipe line and the branch pipe line removably and replaceably inside the window; A body cavity pressure adjustment device for an endoscope, characterized in that a lid body for opening and closing the window is provided. 2. The body cavity pressure adjustment device for an endoscope according to claim 1, wherein the branch portion is provided within the device so as to be visible from the outside.