JPH09135808A - Water supply tank structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent water leakage without any need of providing a valve mechanism at the connection of an endoscope and improve washing, disinfecting and sterilizing functions. SOLUTION: This water supply tank 23 is provided with an endoscope connection 28 in a tube 27 having an air supply pipeline and a water supply pipeline, for connection to an endoscope 22. The water supply tank is thereby formed to be capable of feeding air and water to the end of the endoscope 22. In this case, when the endoscope connection 28 of the water supply tank 23 is pulled out from the endoscope 22, the air supply pipeline is first detached and after the internal pressure of the water supply tank 23 drops, the water supply pipeline is detached. Also, the water supply tank 23 is structured so that the endoscope connection 28, after completely pulled out from the endoscope 22, is positioned above the level of a liquid in the water supply tank 23.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water supply tank structure having an endoscope connecting portion for connecting to an endoscope and supplying air and water to the distal end of the endoscope.

[0002]

2. Description of the Related Art Conventionally, a light source device to which an endoscope is connected is provided with a water supply tank for supplying air and water to the tip of the endoscope. In this water supply tank, as shown in FIG. 13, the cap portion 2 of the tank main body 1 is provided with a flexible tube 3 as a conduit including an air supply conduit and a water supply conduit. An endoscope connecting portion 4 for connecting to an endoscope (not shown) is provided at the tip of the tube 3, and the endoscope connecting portion 4 is provided with a valve mechanism described later.

FIG. 14 shows the internal structure of the endoscope connecting portion 4 of the tank body 1. The tube 3 is a double tube, and the outer tube 3a
The air supply conduit 5 is provided by, and the water supply conduit 6 is provided by the inner pipe 3b. A cylindrical body 7 is provided at the tip of the outer tube 3a.
Is fixed, and the valve box 8 is fixed to the tip portion of the inner pipe 3b.

An opening 10 is provided at the end face of the valve box 8, and a valve pressing member 12 having a flange 11 on the outside and an internal conduit 12a on the inside is freely movable back and forth. It is fitted. A passage 13 for penetrating the internal pipe line 12a of the valve pressing member 12 and the water supply pipe line 6 is provided at the base end portion of the valve pressing member 12, and the base end face of the valve pressing member 12 is housed inside the valve box 8. The valve body 14 is provided. Further, a compression spring 15 is interposed between the valve box 8 and the flange portion 11 to advance the valve pressing member 12 and urge it in the valve closing direction.

When the endoscope connecting portion 4 is connected to the endoscope, the valve pressing member 12 is pressed against the restoring force of the compression spring 15 and is in the retracted state. Although the valve conduit is opened and the internal conduit 12a of the valve pressing member 12 and the water supply conduit 6 are in a penetrating state, when the endoscope connecting portion 4 is removed from the endoscope, the valve pressing member 12 is moved forward by the compression spring 15. Then, the valve element 14 closes (closes) the passage 13.

Therefore, the sterilized water and the like remaining in the water supply pipe line 6 after being washed, disinfected, sterilized, etc.
Therefore, the water does not enter the internal conduit 12a of the valve pressing member 12, and water leakage from the tip of the valve pressing member 12 can be prevented.

Further, FIG. 15 shows that a tank body 1 made of a synthetic resin material has a cap 2 made of a synthetic resin material.
The cap 2 is provided with a tube 3 having an endoscope connecting portion 4 for connecting to an endoscope (not shown) at the tip thereof. The tank body 1 is provided with a tightening band 16 formed of synthetic resin.
Is integrally provided with a mounting bracket 17 made of stainless steel for mounting on a light source device (not shown). Further, the tightening band 16 is provided with a hole 16a for holding the endoscope connecting portion 4.

Then, when the endoscope connecting portion 4 is removed from the endoscope, the endoscope connecting portion 4 is temporarily held in the hole 16a. The tightening band 16 can be attached to the light source device or the like by fitting and fixing the tightening band 16 to the body of the tank body 1. At the time of cleaning and disinfecting, the tightening band 16 can be removed from the tank body 1.

As shown in FIG. 16, a valve mechanism is provided inside the endoscope connecting portion 4, and the valve mechanism is opened by pushing the mouthpiece portion 18 in the direction of arrow e to open the water supply conduit. When disinfecting liquid, sterilizing water, and cleaning water are circulated in the water supply pipe, a separate cleaning adapter 19 is attached to the mouthpiece 18
Is pressed to move in the direction of arrow e, the valve mechanism is opened, the syringe 20 containing the disinfectant, sterilizing water, and cleaning water is attached to the cleaning adapter 19, and the disinfecting solution, sterilizing water, and cleaning water are attached to the water supply conduit. can do.

Further, a CO ₂ cylinder (not shown) is connected to the endoscope through a regulator and a relief valve,
CO ₂ gas is fed into the air feeding line of the endoscope. Further, by connecting the tank body 1 to the endoscope and operating the air / water supply button of the endoscope, it is possible to supply / water the air to the tip of the endoscope.

When CO ₂ gas is used, especially when a lower endoscope and an electric scalpel are used in combination, there is a possibility that combustible gas (methane gas) may fill the colon in the large intestine.
A safer lower endoscopic treatment can be performed because O ₂ gas can be replaced with a non-flammable gas. Further, also in the upper endoscope, by using CO ₂ gas which is absorbed quickly in the body when insufflating air, an endoscopic examination can be performed with less pain to the patient.

[0012]

However, as in the conventional case, when a valve mechanism is provided in the endoscope connecting portion 4 to take measures against water leakage when the endoscope connecting portion 4 is removed from the endoscope, etc. , The structure becomes complicated. Also, cleaning the inside of the air and water supply pipeline,
A jig and an adapter for opening the valve body 14 at the time of disinfection and sterilization are separately prepared and attached to the endoscope connection portion 4 to be connected to the endoscope of the tank body 1, and the cleaning liquid, the sterilizing water, the disinfecting liquid, etc. are syringed. It is flowing in. However, if the jig and the adapter are separated, they may be lost.

Further, a member provided with a hole 16a for holding the endoscope connecting portion 4 connected to the endoscope of the tank body 1 and a fitting for attaching the tank body 1 to the light source device is separately provided. , If it can be removed during cleaning and disinfection,
Not only the time and effort required for cleaning and disinfection may increase, but it may be lost during removal.

If the endoscope is provided with a mouthpiece for inflowing CO ₂ gas, and the tank body 1 side is connected to the same mouthpiece of the endoscope used for normal air supply, the air supply conduit and the CO 2 inside the endoscope are connected. ₂
A gas pipeline is provided, and each pipeline joins before the connection portion with the tank body 1. Therefore, CO ₂ gas can also be sent by inserting the tank body 1 into the endoscope normally, but the narrow endoscope has an air supply pipe and a gas supply pipe, and the two pipes merge. As a result, the pipeline structure became complicated and disinfection and sterilization could be impaired.

The present invention has been made in view of the above circumstances, and its purpose is to prevent water leakage without providing a valve mechanism, and to facilitate water washing, disinfection and sterilization. It is to provide a tank structure.

[0016]

In order to achieve the above-mentioned object, the present invention provides an endoscope connecting portion, which is connected to an endoscope, with a conduit provided with an air supply conduit and a water supply conduit. In the water supply tank structure for supplying air and water to the tip of the endoscope,
When removing the endoscope connection part of the water supply tank from the endoscope, the air supply conduit side comes out first, and after the internal pressure in the water supply tank drops, the water supply conduit side comes out and the endoscope connection is made. After the portion is completely removed from the endoscope, the endoscope connection portion is positioned above the liquid surface of the liquid in the water supply tank.

When the endoscope connection part of the water supply tank is removed from the endoscope, the air supply conduit side comes out first, and after the internal pressure in the water supply tank drops, the water supply conduit side comes out and the endoscope connection part becomes visible. After being completely removed from the mirror, it is above the liquid level of the liquid in the water supply tank, and all the liquid such as sterilized water in the water supply pipe returns to the water supply tank and from the tip of the endoscope connection part. It does not drip.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 6 show a first embodiment. FIG. 1 shows a state in which an endoscope 22 and a water supply tank 23 are attached to the light source device 21, and a mounting metal fitting 24 is provided on the water supplying tank 23.
The water supply tank 23 is attached to the light source device 21 by engaging with the hook 25 of No. 1. The endoscope 22 is the light source device 2
An endoscope connecting portion 28, which is attached to the scope connector portion 26 of No. 1 and is provided at a tip portion of a tube 27 as a conduit connected to the water supply tank 23, is connected to the endoscope 22.

2 to 4 show a procedure for removing the water supply tank 23 from the endoscope 22. An air supply mouthpiece 29 and a water supply mouthpiece 30 are provided adjacent to each other on the side wall of the endoscope 22.
The water supply tank 23 connected to the endoscope 22 via the endoscope connecting portion 28 first connects the endoscope connecting portion 28 to the arrow a in FIG.
By pulling out in the direction of, the air is removed from the air supply mouthpiece 29 for supplying air to the water supply tank 23 provided in the endoscope 22 (see FIG. 3). After that, the endoscope connecting portion 28 is rotated by 90 ° in the direction of the arrow b in FIG. 3 and pulled out in the direction of the arrow c in FIG. 4, so that the sterile water from the water supply tank 23 to the endoscope 22 is supplied from the water supply mouthpiece 30. Be removed.

FIG. 5 shows the internal structure of the water supply tank 23. The mouth of the tank body 31 is provided with a male screw portion 31a for screwing and fitting with the cap 32. The cap 32 is provided with the attachment fitting 24 to be mounted on the light source device 21 on the side surface, and a bamboo shoot-shaped connection portion 33 for connecting the water supply conduit 27a and the air supply conduit 27b of the tube 27 is provided on the upper surface.

A male screw 33 is attached to the lower portion of the connecting portion 33 so as to be screwed and fixed to a tube fixing member 34 made of stainless steel.
a is formed. Further, a female screw 32a is provided on the inner peripheral surface of the cap 32 so as to be screwed into and fitted to the tank body 31. The packing 35 detachably retained on the inner surface of the cap 32 is made of rubber, and is compressed by the pressing force when the tank body 31 and the cap 32 are screwed and fitted, so that the inside of the tank body 31 can be kept watertight and airtight. . A water supply tube 36 for supplying sterilized water in the tank body 31 is inserted into a bamboo shoot-shaped connecting portion 37 provided on the back surface of the cap 32, and is fitted and fixed to the cap 32 by a nut 38 that holds the water supply tube 36. .

A rubber tube reinforcing member 39 having a flange-shaped lower portion is adhered to the tube 27,
The tube fixing member 34 is engaged with the flange of the tube reinforcing member 39 so that the tube reinforcing member 39 does not come off from the connecting portion 33.

The endoscope connecting portion 28 is connected to the water pipe 27 of the tube 27 by a pipe connecting member 40 made of stainless steel.
a and the air supply line 27b. Tube 2
7 and the endoscope connecting portion 28 are fixed to each other by screwing and fitting the female screw portion 41a of the fixing member 41 to the male screw portion 28a made of stainless steel lined on the endoscope connecting portion 28. The fixing member 41 and the tube 27 are engaged with the flange of the tube reinforcing member 42 so that the fixing member 41 does not come off.

Further, as shown in FIG.
A hard member 43 such as a heat-shrinkable tube made of Teflon is coated on the outer side of the cap 32 so that the tube 27 is hard to the midway and the tube 27 is self-supporting. Further, a maximum designated water level scale 44 is displayed on the peripheral wall of the tank main body 31, and it is instructed not to enter sterilizing water or the like above the scale 44.

Next, the operation of the water tank structure constructed as described above will be described. When removing the water supply tank 23 from the endoscope 22, when the endoscope connecting portion 28 of the water supply tank 23 is removed from the endoscope 22, the water supply pipe line 27 a is provided with the air supply mouthpiece 29 provided in the endoscope 22. First removed,
The compressed gas accumulated in the tank body 31 is discharged through the water supply pipe 27a, and the outside air and the atmospheric pressure in the tank body 31 become equal. After that, the endoscope 2 is fed from the air supply line 27b.
The water supply cap 30 provided in 2 is removed.

Further, the tube 27 is made of a rigid member 43 so as to be self-supporting so that the endoscope connecting portion 28 does not go down below the maximum designated water level scale 44. Therefore, the sterilized water or the like returns to the tank main body 31 without dripping from the tip of the endoscope connecting portion 28.

In this way, the internal pressure in the tank main body 31 becomes equal to that of the outside air, and the tube 27 is self-supported so that the endoscope connecting portion 28 does not go down below the maximum designated water level scale 44. Tube 27 when removed
The sterilized water and the like inside returns to the tank main body 31, and water dripping can be prevented without providing a conventional valve mechanism.

FIG. 7 shows the second embodiment. The same components as those of the first embodiment are designated by the same reference numerals and the description thereof will be omitted. In this embodiment, a spring-made stainless steel rod member 45 protruding upward inside the tube 27 is inserted into the cap 32, and the tube 27 in the upper part of the cap 32 is made rigid to a midpoint and the maximum designated water level scale 44 is used. The endoscope connecting portion 28 is designed to be self-supporting so as not to lower. Therefore, the sterilized water or the like returns to the tank main body 31 without dripping from the tip of the endoscope connecting portion 28.

In this way, the internal pressure in the tank body 31 becomes equal to that of the outside air, and the tube 27 is made to stand by itself so that the endoscope connecting portion 28 does not go down below the maximum designated water level scale 44. Tube 27 when removed
The sterilized water and the like inside returns to the tank main body 31, and water dripping can be prevented without providing a conventional valve mechanism.

FIGS. 8 and 9 show a third embodiment,
The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. FIG. 8 shows a state in which the endoscope 22 and the water supply tank 23 are attached to the light source device 21. The water tank 23 is provided with a fitting 24, and is attached to the hook 25 of the light source device 21 via the fitting 24. The endoscope 22 is attached to the light source device 21, and the endoscope connection portion 28 of the water supply tank 23 is attached.
Is connected to the endoscope 22.

A cap 32 made of a synthetic resin material is attached to the tank body 31 of the water supply tank 23 by screwing, and a tube 27 is connected to the cap 32 by a connecting fitting 46. An endoscope connecting portion 28 is provided at the tip. The cap 32 is integrally formed with a stainless steel fitting 24 for mounting on the light source device 21. Further, the cap 32 is provided with a holder 47 for holding the endoscope connecting portion 28 when it is not connected to the endoscope 22.

According to this embodiment, since the mounting member 24 and the holder 47 are integrally provided on the cap 32, it is possible to prevent an increase in the number of parts and prevent loss.
10 and 11 show the fourth embodiment, and the same components as those of the first embodiment are designated by the same reference numerals and the description thereof will be omitted. In this embodiment, the endoscope connecting portion 28 having no valve mechanism is used.
Syringe connection cap 49 that can connect the syringe 48 to the
Are integrally formed. Syringe connection cap 49
Connects to the endoscope connecting portion 28 in the direction of arrow d, and then
A syringe 48 containing a cleaning solution, sterile water, a disinfectant solution, etc. is connected to a syringe connection cap 49. When the piston 50 of the syringe 48 containing the cleaning liquid, the sterilizing water, the disinfecting liquid, etc. is pressed, the endoscope connecting portion 2 is inserted through the syringe connecting cap 49.
8, cleaning liquid in the air supply line 27a and the water supply line 27b,
Can flow into sterile water, disinfectant, etc.

According to this embodiment, the cleaning liquid, the sterilizing water, the disinfecting liquid and the like can be simultaneously introduced into the air supply pipe 27a and the water supply pipe 27b of the endoscope connection portion 28 having no valve mechanism. FIG. 12 shows the fifth embodiment, and the same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted. FIG.
CO ₂ cylinder shows a configuration which flows from (not shown) of CO ₂ gas to the water supply tank 23, a stainless steel cap 51 for flowing the CO ₂ gas from the CO ₂ cylinder in the cap 32 is screwed. This base 51 is JI
It is a luer lock base standardized by S T3101, DIN 13090.

Explaining the piping path from the CO ₂ cylinder to the base 51, the CO ₂ cylinder with a valve is connected in that order to the regulator and the relief valve, and the relief valve is connected to a connecting tube having a luer lock base. , The luer lock mouthpiece and the mouthpiece 51 are connected. CO ₂
Adjust the gas pressure with the regulator to a certain level (60
Adjust to 0hPa 700hPa) and then adjust to the specified pressure (500hPa) with the relief valve.

The CO ₂ gas whose pressure has been adjusted is used by the endoscope 2
By pressing an air supply / water supply button (not shown) 2, CO ₂ gas or sterilized water can be supplied to the body of the endoscope 22 via the water supply tank 23.

According to the embodiment described above, the following configuration can be obtained. (Supplementary Note 1) In a water supply tank structure for supplying air and water to the distal end of an endoscope, which has an endoscope connecting portion connected to an endoscope in a pipe line including an air supply pipe and a water supply pipe When the endoscope connecting portion of the water supply tank is removed from the endoscope, the air supply conduit side comes out first, and after the internal pressure in the water supply tank decreases, the water supply conduit side comes out and the endoscope A water tank structure characterized in that after the connection portion is completely removed from the endoscope, the endoscope connection portion is positioned above the liquid level of the liquid in the water tank.

(Supplementary Note 2) In the endoscope connection portion of the water supply tank, the water supply pipeline is prevented from coming off unless rotation is performed after the air supply pipeline side is removed.
Water tank structure described.

(Supplementary Note 3) The endoscope connecting portion of the water supply tank is rigid outside the pipe provided with the air supply pipe and the water supply pipe in order to always keep the upper part of the liquid level in the water supply tank. The water supply tank structure according to appendix 1, further comprising a member.

(Supplementary Note 4) A spring is provided inside a pipe provided with an air supply pipe and a water supply pipe in order to keep the endoscope connecting portion of the water supply tank always above the liquid level in the water supply tank. The water tank structure according to appendix 1, wherein a rod having properties is inserted.

(Supplementary Note 5) Water supply for supplying air and water to the distal end of the endoscope by providing an endoscope connecting portion for connection to an endoscope in a conduit provided with an air supply conduit and a water supply conduit. In the tank structure, a cap for the tank body is integrally provided with a holder for mounting the tank body on a light source device and the like and a holder for an endoscope connecting portion for connecting to the endoscope. Disinfectant, sterilized water with a syringe in the air supply line and water supply line,
A water supply tank structure, which is integrally provided with a syringe connection cap capable of simultaneously supplying a cleaning liquid and the like.

(Supplementary Note 6) The mounting portion mounted on the light source device or the like is made of metal, and the holder of the endoscope connecting portion for connecting to the endoscope is integrally formed with the cap made of synthetic resin of the water supply tank. The water tank structure according to appendix 5, characterized in that

(Supplementary Note 7) A syringe for connecting an endoscope to the endoscope is formed of rubber, and a syringe capable of simultaneously delivering a disinfecting solution, sterilizing water, a cleaning solution, etc., to the air supply pipe and the water supply pipe by a syringe. The water tank structure according to appendix 5, wherein the connection cap is integrally molded.

(Appendix 8) C is attached to the cap of the water tank.
A base that allows the inflow of O ₂ gas is provided, and C is attached to the tip of the endoscope.
The water tank structure according to appendix 5, which is capable of supplying O ₂ gas.

[0044]

As described above, according to the present invention, when the endoscope connecting portion of the water supply tank is removed from the endoscope, the air supply conduit side comes out first and the internal pressure in the water supply tank decreases. After the water supply pipe side is pulled out and the endoscope connection part is completely removed from the endoscope, it is above the liquid level of the liquid in the water supply tank, and all the liquid such as sterilized water in the water supply pipe is It returns to the inside of the water tank and does not drip from the tip of the endoscope connection part. Therefore, it is not necessary to provide a valve mechanism in the endoscope connecting portion as in the conventional case, and there is an effect that cleaning, disinfection and sterilization are improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a light source device according to a first embodiment of the present invention in which an endoscope and a water supply tank are mounted.

FIG. 2 is a perspective view of the endoscope of the embodiment immediately before the endoscope connecting portion is removed.

FIG. 3 is a perspective view of a hypothesis in which an endoscope connecting portion is removed from the endoscope of the embodiment.

FIG. 4 is a perspective view showing a state in which an endoscope connecting portion is removed from the endoscope of the embodiment.

FIG. 5 is a vertical sectional side view of the water supply tank of the same embodiment.

FIG. 6 is a side view of the water supply tank of the same embodiment.

FIG. 7 is a side view of a water supply tank showing a second embodiment of the present invention.

FIG. 8 is a perspective view showing a light source device according to a third embodiment of the present invention in which an endoscope and a water supply tank are mounted.

FIG. 9 is a perspective view of the water supply tank of the same embodiment.

FIG. 10 is a perspective view showing a fourth embodiment of the present invention and showing a relationship between a pipeline having an air feeding pipeline and a water feeding pipeline and a syringe.

FIG. 11 is a vertical cross-sectional side view showing the same embodiment and showing a state in which a syringe is connected to a pipeline having an air supply pipeline and a water supply pipeline.

FIG. 12 is a perspective view of a water supply tank showing a fifth embodiment of the present invention.

FIG. 13 is a side view of a conventional water supply tank.

FIG. 14 is a vertical sectional side view of a conventional endoscope connecting portion.

FIG. 15 is a perspective view showing a relationship between a conventional water tank and a tightening band.

FIG. 16 is a perspective view showing a relationship between a pipe having a conventional air supply pipe and a water supply pipe and a syringe.

[Explanation of symbols]

 22 ... Endoscope 23 ... Water supply tank 27 ... Tube 27a ... Water supply conduit 27b ... Air supply conduit 28 ... Endoscope connection part

Claims (1)

[Claims] 1. A water supply tank structure for supplying air and water to a distal end of an endoscope, which has an endoscope connecting portion connected to an endoscope in a pipe line provided with an air supply pipe and a water supply pipe. In the case of removing the endoscope connection part of the water supply tank from the endoscope, the air supply conduit side comes out first, after the internal pressure in the water supply tank decreases, the water supply conduit side comes out, and the endoscope A water tank structure characterized in that after the mirror connection part is completely removed from the endoscope, the endoscope connection part is positioned above the liquid level of the liquid in the water supply tank.