JPH038213B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an improvement in an endoscope duct cleaning device for cleaning the inside of an endoscope duct.

[Technical background of the invention and its problems]

The endoscope pipe cleaning device is used to supply air and water to the endoscope.
It is known that cleaning liquid is supplied to various pipes such as suction, and the various pipes are cleaned after use.

There are two types of endoscope channel cleaning devices: one is a simple type that uses a syringe-like device as a liquid delivery means to send liquid to a mouthpiece that connects to various pipes of the endoscope, and the other is a simple type that uses an electric pump as a liquid delivery means. It is classified into two types: a type that is used to send a cleaning liquid to the mouthpiece of an endoscope;

By the way, it is known that the flow resistance and internal volume of an endoscope vary depending on the tube, but in the case of the above-mentioned simple type, the amount of liquid delivered per operation is not that large. If there is a difference in the internal volume of the pipes, there is a disadvantage that the cleaning liquid will spread to the one with the smaller volume, but not to the one with the larger volume. For this reason, it is necessary to perform the liquid feeding operation intermittently many times in order to wash, which causes significant fatigue during washing, and also causes the simple type to become meaningless in the long run. It was hot. In addition, when using an electric pump to send cleaning liquid to a pipe, it is possible to send the cleaning liquid continuously, but if there is a difference in flow resistance between the pipes, it will flow only to the side with less resistance. This has the disadvantage that the cleaning solution flows and does not flow much toward the side with greater flow resistance. In other words, depending on the cleaning method, there are cases where the internal volume of the pipe has a large effect, and cases where the flow resistance has a large effect, and this point is a difficulty in cleaning performance.

[Purpose of the invention]

This invention was made in view of the above circumstances, and its purpose is to provide an endoscope duct cleaning device that can better clean the various ducts of an endoscope. .

[Summary of the invention]

That is, the present invention provides an orifice opening adjusted based on the flow rate of the cleaning liquid of the liquid sending means in each of the various pipes in the connecting means for connecting the liquid feeding pipes to the various mouthpieces of the endoscope. By doing so, the flow resistance of the pipe and the supply of cleaning liquid corresponding to the internal volume of the pipe are achieved.

[Embodiments of the invention]

The present invention will be explained below based on a first embodiment shown in FIGS. 1 to 5. The first embodiment shows an application of the present invention to a simple type, and FIG. 2 shows an endoscope 1 to be cleaned, and FIG. 3 shows an endoscope 1 using a syringe-like device as a liquid feeding means. A mirror channel cleaning device 25 is shown.

First, we will explain endoscope 1.
3 is an operating section, 3 is an insertion section connected to the operating section 2, and 4 is a universal cord having a connector 4a connected to its tip. In addition, 5 is the insertion part 3
6 is the insertion part side air supply pipe inserted into the insertion part side, 6 is the insertion part side water supply pipe, 7 is the insertion part side suction pipe,
8 is an insertion side gas pipe inserted into the operating section 1; 9
10 is the connector side air supply pipe inserted into the universal cord 4, and 10 is the connector side water supply pipe,
11 is a connector-side suction line, and 12 is a connector-side gas line. The distal ends of the insertion section side air supply conduit 5, the insertion section side water supply conduit 6, and the suction conduit 11 each open at the distal end 3a of the insertion section 3, and the rear end of the connector side air supply conduit 9 are a water supply cap 13 provided on the side of the connector 4a and an air supply cap 14 provided on the tip surface of the connector 4a.
The rear end of the connector side water supply pipe 10 is opened to the water supply mouthpiece 13 of the connector 4a, the rear end of the connector side suction pipe 11 is opened to the suction mouthpiece 15 provided on the side of the connector 4a, and the rear end of the connector side water supply pipe 10 is opened to the water supply mouthpiece 13 of the connector 4a. The rear end of the side gas pipe 12 opens into a gas mouthpiece 16 provided on the side of the connector 4a. Note that the distal end of the gas pipe line 8 on the insertion part side is connected to the middle of the air supply pipe line 5 on the insertion part side. Further, the operating section 2 is provided with a line of gas cylinders 19 (all of which correspond to mouthpieces) incorporating an air/water supply cylinder 17, a suction cylinder 18, and a valve mechanism 19a. The remaining ends of the air supply pipes 9 and 5 and the water supply pipes 10 and 6 are connected to the air and water cylinder 17, and the suction pipe 1 is connected to the suction cylinder 18.
The remaining ends of gas pipes 1 and 7 are connected in communication, and the remaining ends of gas pipes 12 and 8 are also connected in communication with gas cylinder 19, so that each air and water supply cylinder 1
7. Operation buttons (all not shown) for operating the air/water supply piston, the suction piston, and the valve mechanism 19a are removably attached to the flange portions 20 at the open ends of the suction cylinder 18 and the gas cylinder 19. By combining, switching of air and water supply,
It is possible to switch between suction and CO ₂ . Note that the midway of the insertion section side suction channel 7 is connected to a forceps port 21 provided in the operating section 2 via a forceps channel 22, so that a treatment instrument such as forceps can be inserted. ing.
Further, 23 is a flange portion provided at the open end of the forceps mouth 22.

However, in FIG. 2, the air and water piston, the suction piston, and the operation button are removed. It should be noted that the internal volume of the conduit is extremely large compared to Nos. 6, 9, and 10.

Next, the endoscope duct cleaning device 25 that cleans the various ducts of the endoscope 1 will be explained.
26 is a simple pump 27 and this simple pump 2
7, a syringe-shaped operating section 28, 29 a connector (corresponding to a connecting means) that can be freely connected to the air/water supply cylinder 17 and the suction cylinder 18, and 30 a liquid supply pipe. be. The liquid feeding pipe line 30 has short tubes 32a and 32b connected to the branch side ends of a branch pipe 31 formed in a Y-shape, and a long tube 33 connected to the remaining end. configured.

On the other hand, as the simple pump 27, one shown in FIG. 4 is adopted. That is, in addition to integrally protruding a hub 35 on the rear outer periphery of the T-shaped syringe connector 34, a delivery mouthpiece 36 is attached to the tip opening, and a suction mouthpiece 37 is attached to the lower end opening with a screw 38. Check valves 39a and 39b are interposed between the outlet fitting 36 and the end surface of the cylinder connecting body 34, and between the suction fitting 37 and the end surface of the cylinder connecting body 34, respectively.
A filter portion 4 is attached to the tip of the suction cap 37.
In addition to connecting the suction tube 41 provided with
It is constructed by integrally protruding.

On the other hand, the operating section 28 is composed of a syringe 48 into which a piston 47 is slidably inserted. The tip of this syringe 48 is connected to the syringe receiving part 4.
3 and the Luer lock cap 42 to constitute the entire liquid feeding means 26. Here, the above-mentioned check valves 39a and 39b are explained. Both of these valve bodies are formed by providing a circular slit 44 in a disk-shaped elastic body (such as silicone rubber) as shown in FIG. 45 is adopted, of which the syringe connector 34 is connected to the delivery port 36 side.
The valve seat 46a is provided on the end face of the valve seat 46a so as to come into contact with the central surface section defined by the slit 44.
6b is used. However,
By pushing and pulling the piston 47 in the syringe 48, the cleaning liquid (general term for liquids required for cleaning, including chemical solutions) 50 stored in the liquid tank 49 is sucked up from the filter part 40 to the syringe connection body 34.
It is now possible to send the money to the sending account 36.

The rear end of the tube 33 is connected to the outlet metal 36 of the liquid feeding means 26, and the tube 3
The connector 29 is connected to the tips of 2a and 32b to constitute an endoscope channel cleaning device 25.
This connector 29 is provided with an adjustment means which is a main part of the present invention, and the structure thereof and the structure around the connector 29 are shown in FIG.

First, the structure of the connector 29 will be described. 55 is a rectangular plate-shaped main body made of metal or plastic, 56 is an air/water cylinder inlet fitting, 57 is a suction cylinder inlet fitting, and 58 is a gas cylinder. It's a stopper. The air/water cylinder injection cap 56 and the suction cylinder injection cap 57 each have a flange 59 on the upper end side, and a cap seat 61 having a flange 60 formed on the outer periphery is screwed onto the lower end side, and a flange 61 is screwed onto the outer periphery of the lower end. A sealing member 62 is arranged to ensure watertightness and confidentiality. These air and water supply cylinder inlet fittings 56 and suction cylinder inlet fittings 57
The bodies of the main body 55 are fitted so as to be movable in a direction perpendicular to the plate surface of the main body 55, and are urged downward by a spring 63 interposed between the lower surface of the main body 55 and the base washer 61. , installed. Note that the seal member 6
2, each air and water cylinder inlet fitting 56,
Needless to say, the lower end of the suction cylinder injection port 57 is formed into an external shape that can be removably inserted into the air/water supply cylinder 17 and the suction cylinder 18. The gas cylinder stopper 58 has a flange 64 at its upper end, and a protrusion 64a screwed into its lower end for opening the valve mechanism 19a of the gas cylinder 19. The body of this gas cylinder stopper 58 is similar to the air/water supply cylinder inlet fitting 57 and the suction cylinder inlet fitting 58.
It is movably attached to the main body 55 using a spring 65. Note that 68 is a sealing member provided on the outer periphery of the protrusion 64a, and the spring 65 has a stronger biasing force than the spring 66 of the valve mechanism 19a. The air and water cylinder inlet fittings 56, suction cylinder inlet fittings 57, and gas cylinder plugs 58 are arranged at the same intervals and in the same arrangement as the air and water cylinders 17, suction cylinders 18, and gas fittings 16 of the endoscope 1. In addition to being arranged in a straight line on the center of the main body 55 in the longitudinal direction, a box-shaped slider 67 is provided on the lower surface of the main body 55 so as to wrap around each slider, thereby forming the entire connector 29. The tubes 32a and 32b of the liquid supply conduit 30 are connected to the bases of the air and water cylinder inlet fitting 56 and the suction cylinder inlet fitting 57 of the connector 29, respectively, and the cleaning liquid 50 is supplied to the respective conduits of the endoscope 1. We are making it possible to supply. That is, here, the slider 67 has a through hole in the lower wall 67 that has a diameter larger than the diameter of the flange portion 20 of each cylinder 17, 18, 19 of the endoscope 1. gas cap 1
In addition to forming the through holes corresponding to the slider 67, a configuration is used in which the centers of these through holes are communicated with each other by a slot portion having approximately the same size as the diameter of the neck portion 20a of the flange portion 20. After inserting each air/water cylinder inlet fitting 56, suction cylinder inlet fitting 57, and gas cylinder stopper 58 into each cylinder 17, 18, 19 of the endoscope 1 through each through hole, the groove part of the slider 67 is inserted into the flange. When the connector 29 is locked, the air/water cylinder inlet fitting 56 is connected to the air/water cylinder 17 of the endoscope 1, and the suction cylinder inlet fitting 57 is connected to the endoscope 1. In addition to being connected to the suction cylinder 18 of the endoscope 1, the valve mechanism 19a of the gas cylinder 19 of the endoscope 1 can be pressed and opened by pressing the valve mechanism 19a of the gas cylinder 19 of the endoscope 1 while sealing it with the gas cylinder stopper 58.

The above-mentioned adjusting means for adjusting the flow rate of the cleaning liquid 50 is provided at the lower end side of the flow path 70 of each air/water supply cylinder injection port 56 and suction injection port 57. This regulating means includes an orifice 71 for restricting the flow rate in each flow path 70.
In addition to providing the orifices 71a and 71b, the diameter of the orifice 71a on the side that communicates with the air and water supply pipes 5, 6, 9, and 10, which have a small internal volume, is made smaller, and the internal volume is reduced by the increased resistance. is the large suction pipe 7,
The flow rate is adjusted so that a large amount of the cleaning liquid 50 can be supplied to 11 (opening of the air/water supply side orifice 71a<opening of the suction side orifice 71b).

Therefore, when cleaning the endoscope 1 using the simple type endoscope pipe cleaning device 25 configured as described above, first, the air and water supply cylinder injection port of the connector 29 is connected to the tips of the tubes 32a and 32b. 56, connect the base of the suction cylinder injection cap 57, connect the simple pump 27 to the rear end of the tube 33, and further connect the syringe 48 equipped with the piston 47 to the Luer lock cap 42 of the syringe connector 34. , assemble the endoscope channel cleaning device 25. Thereafter, in addition to putting the tip of the suction tube 41 of the simple pump 27 into the cleaning liquid 50 in the liquid tank 49, the connector 29 is connected to the air and water supply cylinder 1.
7. Fix to the suction cylinder 18 and gas cylinder 19 using slider operation. As a result, as shown in FIG. This means that the gas cylinder 19 is sealed while keeping it open. Thereafter, by pushing and pulling the piston 47 of the syringe 48 from this state, the cleaning liquid 50 is supplied to each air/water supply cylinder 17 and suction cylinder 18 via the liquid supply pipe line 30 and the connector 29. That is, in the simple pump 27, when the piston 47 is pulled, the check valve 39a on the side of the outlet fitting 36 is closed by suction pressure, and the check valve 39b on the side of the suction fitting 37 is opened, and the filter 4 is opened.
In addition to suctioning the cleaning liquid 50 through 0, by pushing the piston 47, the check valve 39a on the outlet mouthpiece 36 side opens, and the check valve 39b on the suction mouthpiece 37 side closes. The cleaning liquid 50 is sent to each of the air/water cylinders 17 and suction cylinders 18 through the air/water cylinder inlet fitting 56 and the suction cylinder suction fitting 57 of the connector 29 .

As a result, the cleaning liquid 50 is supplied to each of the air supply pipes 5, 9,
In addition to being sent to the suction pipes 7 and 11, it is also sent from the air supply pipe 5 to the gas pipes 8 and 12 through the opened valve mechanism 19a, thereby cleaning the various pipes of the endoscope 1. However, this type of cleaning system is greatly affected by the internal volume of the pipes of the endoscope 1 (air and water pipes < suction pipes), and this is an advantage of the simple type. There is a concern that the advantages of not requiring much effort and time may be lost.

However, according to this invention, the orifice 71
a, 71b are set such that the opening of the air/water supply side orifice 71a is smaller than the opening of the suction side orifice 1b, so that a large amount of cleaning liquid 50 is sent into the suction pipes 7, 11 having a large internal volume. Therefore, the cleaning liquid 50 can be quickly distributed to all the pipes of the endoscope 1 (both pipes with a small internal volume and pipes with a large internal volume) by effectively using the limited amount of liquid sent at one time. This makes it possible to completely fill the inside of the pipe with the cleaning liquid 50. Therefore, not only can high cleaning performance be obtained, but the many liquid feeding operations that were conventionally required intermittently can be reduced, reducing fatigue during cleaning and further reducing the amount of time required. In the corner, you can take full advantage of the features of the simple type.

In the first embodiment described above, the connector (connection means) 29 is provided with orifices 71a, 71b, and the cylinders 17, 18, all provided in the operating section 2,
The cleaning liquid 50 is sent from 19 to the various pipes of the endoscope 1, but as shown in FIGS. 6 and 7, the first implementation As in the example, orifices 71a and 71b are provided whose openings are set according to the internal volume of the pipe, and the overall length of the tube 32b is lengthened so that the air supply cap 14 can be connected without connecting the end to the connector 29. hand,
The cleaning liquid 50 may be sent to various pipes of the endoscope 1. At this time, the air/water cylinder inlet fitting 56 connected to the air/water cylinder 17 is watertightly plugged, and the water feeding fitting 13 is watertightly closed with a water feeding fitting plug 73 made of an elastic member. .

Moreover, instead of providing an orifice in the endoscope channel cleaning device, as shown in FIG. In addition to providing an orifice 76 to adjust the flow rate, or inserting a cylindrical member 77 with a leakage hole 77a in the center as shown in FIG. A flow rate adjusting means may be provided on the endoscope 1 side. Of course, it may be provided both on the endoscope 1 side and on the endoscope channel cleaning device.
Note that FIG. 10 shows a modification of FIG. 8, in which a forceps plug 75 has leakage holes 74 formed in the two forceps ports 21.
This shows the one with .

FIG. 11 and FIG. 12 show a second embodiment in which the present invention is applied to an endoscope channel cleaning device 81 that employs an electric pump 80 as a liquid feeding means. Contrary to the first embodiment, the openings of the orifices 71a and 71b provided in the connector 29 of 81 are made larger on the side of the air and water supply pipe where the flow resistance is large, and are made smaller on the side of the suction pipe where the flow resistance is small. The opening of the air/water-side orifice 71a>the opening of the suction-side orifice 71b) is configured as an adjusting means, and the cleaning liquid 50 is adjusted to the air/water cylinder 1 at approximately the same pressure so that both of them are in appropriate amounts.
7. The suction cylinder 18 is used to send the liquid to various pipes of the endoscope 1. In the endoscope conduit cleaning device 81 that continuously sends liquid, as described above, the cleaning liquid flows smoothly into the conduit due to the influence of the flow resistance of the conduit of the endoscope 1. There is a concern that the orifices 71a and 71
By adjusting the flow resistance by b, the fluid can flow smoothly and smoothly in both the direction of low flow resistance and the direction of high flow resistance, and clean the conduit of the endoscope 1 with high cleaning performance. Can be done. Of course, such a means for adjusting the cleaning liquid 50 may be provided on the endoscope 1 side as described above, or may be provided on both the endoscope 1 and the endoscope channel cleaning device 25. . However, in FIG. 11 and FIG. 12, the same components as those in the first embodiment are given the same reference numerals, and the explanation thereof is omitted.

Note that in both the first and second embodiments described above, a fixed orifice was used to adjust the flow rate of the cleaning liquid, but the third embodiment shown in FIGS. For example, an orifice member 91 is provided at the lower end of at least one of the air and water cylinder inlet fitting 56 and the suction cylinder inlet fitting 57 so that the opening area of the orifice 90 can be varied by moving forward and backward from the lower end toward the outside. hand,
The flow rate of the cleaning liquid 50 may be adjusted according to the cleaning method by configuring an adjustment means. In FIG. 13, 92 is a bottomed cylindrical channel formed in the orifice member 91 along the axial direction, and 93 is an orifice provided on the peripheral wall of the orifice member 91 so as to communicate with the channel 92. It is a hole.

〔Effect of the invention〕

As explained above, according to the present invention, it is possible to adjust the flow resistance of the conduit of the endoscope and the flow rate of the cleaning liquid in the internal volume of the conduit by using the means for adjusting the flow rate. Therefore, the cleaning liquid can be simultaneously and quickly sent to every corner of the endoscope's various conduits.

[Brief explanation of the drawing]

1 to 5 show a first embodiment in which the present invention is applied to a simple endoscope channel cleaning device,
FIG. 1 is a cross-sectional view showing the structure of the connecting means and the adjusting means provided on the connecting means, FIG. 2 is a schematic configuration diagram showing an endoscope being cleaned by the endoscope channel cleaning device, and FIG. Fig. 3 is a front view showing the overall structure of the endoscope channel cleaning device, Fig. 4 is a cross-sectional view showing the structure of the pump part that constitutes the liquid feeding means, and Fig. 5 is a back check that makes up the pump part. 6 and 7 are front views showing the valve body of the valve, and FIGS. 6 and 7 show modifications of the first embodiment, and FIG. 6 shows an endoscope tube in which cleaning liquid is sent from the connector side of the endoscope. FIG. 7 is a cross-sectional view showing the structure of the adjustment means provided in the liquid supply pipe, and FIG. 8 is an orifice provided at the forceps port of the endoscope to adjust the flow rate of the cleaning liquid. FIG. 9 is a front view showing a modified example of the present invention, which has a different structure, and shows an adjusting means for adjusting the flow rate of the cleaning liquid using the water supply mouthpiece of the endoscope. FIG. 10 is a sectional view showing a modification of the embodiment shown in FIG. 8, and FIGS. 11 and 12 are endoscope pipe cleaning using an electric pump as the liquid feeding means. The second application of this invention to a device
Fig. 11 is a front view showing the overall structure of the endoscope channel cleaning device, and Fig. 12 is a sectional view showing the structure of the connecting means and the adjusting means provided in the connecting means. , FIGS. 13a and 13b are cross-sectional views showing the structure of different adjusting means and the variable state of the flow rate according to a third embodiment of the present invention. 1... Endoscope, 5, 6, 7, 8, 9, 10, 1
1, 12... Insertion part side air supply pipe, insertion part side water supply pipe, insertion part side suction pipe, insertion part side gas pipe, connector side air supply pipe, connector side water supply pipe, connector side suction pipe , connector side gas pipe line (endoscope pipe line), 25, 81... endoscope pipe cleaning device, 26
...Liquid feeding means, 29...Connector (connection means),
30...Liquid feeding pipe line, 71a, 71b, 76, 7
8, 90... Orifice (adjustment means).

Claims (1)

[Scope of Claims] 1. A liquid sending means for sending a cleaning liquid to various pipes of the endoscope, and various caps that communicate the sent cleaning liquid with the various pipes of the endoscope. a liquid-feeding conduit for guiding the liquid-feeding conduit, a connecting means for connecting the liquid-feeding conduit to various mouthpieces of the endoscope, and a connecting means for connecting the cleaning liquid of the liquid-feeding means to each of the various conduits provided within the connecting means. An endoscope conduit cleaning device characterized by comprising: an orifice opening adjusted based on the flow rate.