JPS615828A - Liquid feeder of endoscope - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an endoscope, such as a biliary tract endoscope, that delivers a liquid such as physiological saline into the body from the endoscope side.

"Prior art and its problems" When using a biliary tract endoscope (fiberscope) to remove, for example, gallstones under endoscopic observation, forceps are inserted through the forceps insertion port to grasp the gallstones, and then the gallstones are grasped and removed. Pull out f. However, bile secreted from the gallbladder is darkly colored and obstructs the view of the biliary tract, making it difficult to grasp gallstones with forceps. Therefore, it is common practice to inject physiological saline in a drip form through the forceps insertion port to wash away the bile and secure the visual field.

Figures 4 and 5 show conventional examples of the endoscope 11.
A forceps insertion port 14 is provided at the front of the operating portion 13 of the forceps insertion port 14, and a forceps tube 15 connected to the forceps insertion port 14 is guided to the distal end of the body insertion portion 12 and opened.
A T-shaped tube 16 is inserted into the tube, and a liquid supply tube 19 hanging from a saline bottle 18 is connected to the branch tube 17 . Further, a forceps plug 21 is attached to the orthogonal tube 20 of the T-shaped tube 16. Inserting the T-tube 16 and forceps (1)
4 has the same taper as the taper at the tip of the syringe, and is connected by a taper joint.

■--The forceps plug 21 has a forceps insertion slit 22 that is normally closed. When forceps (not shown) are inserted through this forceps insertion slit 22, the forceps are inserted into the forceps insertion port 14.
It passes through the forceps tube 15 and protrudes from the distal end of the body insertion section 12. The forceps are operated from the operating section 13 side to grasp the gallstone. The state of the inside of the biliary tract and the condition of the forceps are observed through the objective lens at the tip of the body insertion section 12 and the image camera passed through the interior of the body insertion section 12 and the operating section 13 through the eyepiece lens 23. 24 is a light source device, and its illumination light is given to the distal end of the body insertion part 12 by a light guide cable 25 and a light guide fiber inserted into the operating section 13 and the body insertion part 12.

1- In the conventional device, physiological saline is dripped from a saline bottle 18 through a liquid supply tube 19.

Enter the T-shaped tube 16 from the branch tube 17 and insert the forceps 1-114.
and the biliary tract via the forceps channel 15.

Therefore, bile secreted from the gallbladder? 1 can be washed away with this physiological saline water, and the inside of the biliary tract can be observed using the eyepiece device 23, or the state of grasping gallstones using forceps can be observed.

However, this conventional endoscope utilizes a T-tube 16 inserted into the forceps insertion ``114'' and a physiological saline bottle 18.
The 0-drop interval, which had the problem of not being able to control the dripping status of physiological saline, can be adjusted with a regulator 27 installed in the middle of the fluid supply tube 19. However, in order to stop the dripping, there is no choice but to break the liquid supply tube 19 or remove the liquid supply tube 19 from the branch pipe 17, and such a method of use is virtually impossible. Therefore, at the moment when a gallstone is grasped with forceps, the dropped physiological saline hits the gallstone and pushes the stone deeper into the biliary tract, or in the worst case, the gallstone once grasped comes off from the forceps. In addition, the forceps insertion port 14 to which the T-tube 16 is attached is usually provided at the front part of the operation section 13 at the boundary with the body insertion section 12, so when the entire endoscope 11 is rotated during the examination, the forceps insertion port 14 is There were cases in which the juncture 16 and the liquid supply tube 19 connected thereto were in the way and hindered operation. Furthermore, if the liquid supply tube 19 or T-shaped tube 16 comes into contact with surrounding people or obstacles, the T-shaped tube 1
6 and the forceps insertion port 14 are simply connected with the same taper as the taper at the tip of the syringe. has been completely sterilized after the last inspection.
In addition, the operating doctor puts on completely sterile surgical gloves and operates the endoscope, but the saline bottle 18 and the fluid supply duplex 19 are used without being specially sterilized. Since it is connected to the forceps insertion port 14,
There was a risk of spreading bacteria to the surrounding area and adversely affecting the patient.

``Purpose of the Invention'' The present invention was made based on the above-mentioned awareness of the problems with conventional endoscopes. The purpose is to obtain a vision. Another object of the present invention is to provide an endoscope in which a fluid supply tube hanging down from a fluid supply bottle for saline or the like does not easily come off the endoscope.

"Summary of the Invention" The endoscope of the present invention has a liquid feeding path for feeding a liquid such as physiological saline, which is provided from the operation part of the endoscope to the tip of the body insertion part. This valve is equipped with a liquid feeding interruption valve that can be opened and the liquid feeding interrupted by an external operation. If fluid delivery into the body is interrupted by this fluid delivery interruption valve, gallstones will not be washed away by a liquid such as physiological saline. The liquid feeding path is provided at the rear of the forceps channel at a position where it can be operated with the fingers of the hand holding the operating part, and the liquid feeding path is a relay connecting the rear end of the forceps channel and the liquid feeding interruption valve. It consists of a tube and a liquid feeding pipe that communicates with the liquid feeding interruption valve and projects outside of the operating section. This liquid supply pipe is preferably provided along the light guide cable protruding from the body insertion part. According to this configuration, the liquid supply tube of the liquid supply bottle can be fixedly connected to the liquid supply pipe, The fluid tube does not come off accidentally, and even if the fluid tube is used without sterilization, the fluid tube is located at the rear of the endoscope.
Bacteria rarely have a negative effect on patients.

"Embodiments of the Invention" The present invention will be described below with reference to illustrated embodiments. In Figures 1 to 1s3, the body insertion part 12) of the endoscope 11, the operation part 13, the forceps insertion port 14, the eyepiece device 23, and the light source device 2 are shown.
4 and the light guide cable 25 are the same elements as in the conventional device. A light guide cable 25 and a liquid injection pipe 30 extending along the light guide cable 25 are fixed to the rear end of the operating section 13 . The light source device 24 and the liquid injection pipe 30 are also provided at the rear end of the operation unit 13.
A liquid supply interruption valve 31 is fixed to a surface adjacent to the fixed surface of the liquid injection pipe 30, and the inner end of the liquid injection pipe 30
Inside, the valve housing 32 of this liquid supply interruption valve 31 is opened. This liquid injection pipe 30 can be constructed from a metal pipe such as stainless steel,
Its outer end serves as a connection port 33 for the liquid supply tube 19 .

The position of the liquid supply interruption valve 31 is set so that it can be operated with the fingers of the hand holding the operating section 13. Moreover, when the liquid sending pipe 30 is placed along the light guide cable 25,
Since the protruding parts from the operation part 13 are summarized in 7% of the cylinder,
The advantage is that you are less likely to come into contact with surrounding obstacles.

The valve housing 32 of the liquid feeding interruption valve 31 also has an open rear end of a relay tube 34, and the front end of the relay tube 34 is connected to the rear end of the forceps tube 15. These liquid injection pipes 30, liquid supply interruption valve 31 (
The valve housing 32), the relay tube 34, and the forceps tube 15 constitute a series of liquid feeding paths from the rear end of the operation@13 to the distal end of the body insertion section 12. Since the relay tube 34 is inserted into the narrow operating section 13, it is preferably formed from a U (flexible tube).

A valve body 40 that controls communication between the liquid injection pipe 30 and the relay tube 34 is slidably inserted into the valve housing 32 of the liquid supply interruption valve 31 . The valve housing 32 has the mounting hole 3 of the casing 35 of the operating section 13.
6 from the inside, and a retaining ring 37 is screwed onto the valve housing 32 from the outside of the casing 35, thereby fixing both to the casing 35. A spring receiver 38 is further screwed and fixed to the retaining ring 37 from the outside, and a compression spring 39 is inserted between this spring receiver 38 and the pressing operation part 41 that is threaded and fixed to the valve body 40. Then, the valve body 40 is moved outward by +1 force.

When the pulp body 40 is positioned outward according to the force of the compression spring 39, the liquid injection pipe 30 and the relay tube 34 communicate with each other, and when the valve body 40 is pushed down against the force of the compression spring 39, the injection pipe 30 and the relay tube 34 are in communication with each other. Communication between the liquid pipe 30 and the relay tube 34 is cut off.

Therefore, in this endoscope having the configuration as described above, when the body insertion part 12 is inserted into the body, the liquid injection pipe 30 is connected [
When the fluid supply tube 19 hanging down from the saline bottle 18 is connected to 133, the saline dripping through the fluid supply pipe 19 reaches the fluid supply interruption valve 31 from the fluid injection pipe 30, which is normally open. Iriko liquid supply interruption valve 31
Furthermore, it is supplied into the body via the relay tube 34 and the forceps tube 15. Therefore, when inspecting the biliary tract, bile can be washed away and the field of view can be secured.

Furthermore, when forceps are inserted through forceps insertion [114] in order to remove gallstones, the condition of the forceps can be observed. Then, when it is necessary to prevent dripping of physiological saline, such as at the moment when a gallstone is grasped with the forceps insertion port 14, the examining doctor depresses the press operation part 41 of the liquid supply interruption valve 31.

Then, the valve body 40, which is integrated with the suppression operation section 41, cuts off the communication between the liquid injection pipe 30 and the relay tube 34, so that dripping of physiological saline stops. Therefore, it is possible to prevent an accident in which a gallstone that is grasped or attempted to be grasped is washed away by the dripping physiological saline, and it is possible to accurately remove Ip stones. If injection of a contrast agent is required, this can be done by inserting a syringe into the forceps insertion port 14.

-) In the bipedal embodiment, the present invention is explained by taking the examination of the biliary tract as an example. It is similarly applicable to endoscopes. In addition, the endoscope of the present invention is not only an endoscope dedicated to these organs, but also uses, for example, the water supply tube of a gastric endoscope as a fluid supply path of a water endoscope, and the water supply valve can be used to determine whether or not to supply water to the axilla. A similar function can be obtained by replacing it with a valve.

``Effects of the Invention'' As described above, since the liquid feeding device for an endoscope of the present invention is provided with a liquid feeding interruption valve in the liquid feeding path, in principle, it is difficult to inject liquids such as physiological saline that are constantly flowing into the body. , and can be stopped at any time if necessary. In other words, since the interval at which the liquid is dropped can be freely controlled, it is possible to prevent ISI &, where the gallstones are unexpectedly washed away by the dropped liquid, when removing gallstones under endoscopic observation. . In addition, as in the embodiment, if the liquid feeding interruption valve is provided at the rear end of the operating unit and the liquid feeding pipe is also fixed to the rear end of the operating unit, the liquid feeding pipe and the saline bottle etc. Since it can be firmly connected to the liquid supply tube of the liquid supply bottle, there is no possibility that the liquid supply tube will come off during the inspection. If the liquid supply pipe is installed at the rear end of the operation unit, the distance between the patient and the fluid supply bottle and fluid supply tube will be increased, so even if the saline bottle and fluid supply tube are not sterilized, there will be no adverse effects. It rarely affects patients.

[Brief explanation of the drawing]

FIG. 1 is an 11-degree plan view of the main parts showing an embodiment of the liquid feeding device for an endoscope according to the present invention, FIG. 2 is a plan view of the same, and FIG.
4 is a perspective view of the main part showing an embodiment of a conventional endoscope liquid feeding device, and ff55 is a sectional view taken along the line -■.
- This is a decapitation along the v line. 11... Endoscope, 12... In-body insertion part, 13...
Operation unit, 15... Forceps tube, 18... Physiological saline bottle, 19... Liquid supply tube, 25... Light guide cable, 30... Liquid injection pipe, 31... Liquid feeding interruption Valve, 32...Valve housing, 33...
・Connection port, 34... Relay tube, 35... Casing, 39... Compression spring, 40... Valve body,
41... Suppression operation section. Special Patent Information Applicant Asahi Optical Industry Co., Ltd. Agent Kunio Miura'''V

Claims (4)

[Claims] (1) In a liquid feeding device for an endoscope, which is provided with a liquid feeding path for feeding a liquid such as physiological saline from the operation part of the endoscope to the tip of the body insertion part, the liquid feeding path is always filled with water. A liquid feeding device for an endoscope, comprising a liquid feeding interruption valve that opens a liquid feeding path and interrupts liquid feeding by an external operation. (2) In claim 1, the liquid feeding interruption valve is provided at a rear part of the operating section of the endoscope at a position where it can be operated with the fingers of the hand holding the operating section. liquid equipment. (3) In claim 2, the liquid feeding path connects a forceps channel that extends from the forceps insertion port provided in the operating section to the tip of the body insertion part, and a rear end of this forceps channel and a liquid feeding interruption valve. A liquid feeding device for an endoscope, consisting of a relay tube that connects to a liquid feeding interruption valve, and a liquid feeding pipe that protrudes into the outer cylinder of an operating section. (4) In claim 3, the liquid sending pipe is
A fluid delivery device for an endoscope that is installed along the light guide cable that protrudes from the body insertion section.