JPS5920145A - Cleaning aid tool 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 The present invention relates to an endoscope cleaning aid used when cleaning a conduit formed within an endoscope.

Generally, when cleaning a scope, not only its outer surface but also the ducts formed inside the scope are cleaned at the same time. By the way, the above-mentioned pipes are cleaned by selecting the opening at one end, the opening at the other end, and the opening in the middle and injecting cleaning liquid from there, but generally a large amount of cleaning water is used. In addition, it was not possible to thoroughly clean the inside of the air/water supply switching valve, suction switching valve, sub-water supply mouthpiece, etc. For example, in the suction pipe, one end communicates with the tip nozzle (outlet/outlet), the other end communicates with the base of the φ Nilight guide connector cover, and the midway part communicates with the suction switching valve and the treatment common insertion port. There is. Further, since the cleaning liquid is injected from the insertion port or the mouthpiece, a large amount of cleaning liquid is required.

In addition, the inside of the suction switching valve was not penetrated well and could not be thoroughly cleaned. In particular, if the openings are closed while leaving the inlet and outlet portions, there will be areas where the cleaning liquid stagnates due to the shape, and the cleaning of those areas will be incomplete. In addition, in pipes that are switched using air and water switching valves, the air and water supply side pipes are completely switched, so the cleaning liquid does not flow to either side, resulting in areas that cannot be cleaned. .

The present invention has been made in view of the above circumstances, and its purpose is to use a cleaning liquid to clean the entire duct formed in the endoscope without sacrificing the cleaning effect. An object of the present invention is to provide an endoscope cleaning aid that can be used in a reduced amount.

That is, in the present invention, when all the cleaning liquid is sent into the pipe line of an endoscope, a cap having a small hole for leakage is attached to the outlet other than the outlet and the opening through which the cleaning liquid is sent. be.

Hereinafter, one embodiment of the present invention will be described based on all the drawings.

1 in FIG. 1 is an endoscope to which the cleaning aid A'z of the present invention can be applied. This endoscope 1 has an elongated insertion section 3 connected to the operation section 112, and a universal cord 4 is connected to the operation section 2.

The main body 5 of the operating section 2 is relatively long, with an intermediate section 21 and a side section 6, and a side end π (3) of the insertion section 3.
ll The wall is provided with an insertion port 8 for a treatment instrument insertion hole 7, which will be described later. The instrument passes through the insertion portion 3 from the insertion port 8 of the treatment instrument insertion hole 7 and reaches the outlet 9 formed at the distal end of the insertion portion 3.
ing. Note that a sealing member 10 that maintains airtightness is removably provided in the insertion port 8 as an opening.

In addition, an air/water supply switching valve 11 is provided at the proximal end of the operation unit 2.
and a suction switching valve 12 are provided side by side. moreover,
An eyepiece section I3 is provided at the 20,000 yuan end of the operation section Ill. The air/water switching valve II is arranged so that the air/water supply operation can be selected by switching the air/water supply pipeline (not shown).

In addition, the suction switching lambda valve 12 has a suction switch 6 that is inserted across the insertion section 3, the operation section 2, and the universal cord 4.
V is inserted in the middle of the first passage 14 to control the suction operation.
It's C. The suction pipe line 14 includes a suction cheep 15 on the universal cord 4 side, a suction tube 16 connecting the suction switching valve 12 and the treatment instrument insertion hole 7, and a treatment instrument insertion hole 7 on the distal side from the connection end of the suction tube 16. is formed by. The suction tube 15 has a length of 9Jh through a 4-yen universal cord to the connector portion 17, and is connected to a base 18 serving as an opening. This opening i'
,',I protrudes from the outer surface of the connector portion 17, and is connected to an aspirator (not shown).

The suction switching valve 12 is constructed as shown in FIG. That is, this suction switching valve 12 and cylinder 19
and a piston 20, the cylinder 19 shown in - is formed into a bottomed cylindrical shape with its lower end closed and its L end opened to the outside. The outer periphery of the upper end of the cylinder 19 is formed to have a smaller diameter than the outer periphery of the intermediate portion 21, and a step 22 is formed between it and the intermediate portion 21 side. Further, by forming a male threaded portion 23 on the outer periphery of the upper end of the cylinder 19, the upper end becomes a mounting portion 24. For this installation, the part 24 is drilled into the wall 5a of the main body 5 of the operation part 2, and the part 24 is inserted into the hole 25, and the male threaded part 23 is pushed outward, and the step 2 is inserted into the hole 25.
When the end face of 2 is pressed against the inner surface of the wall portion 5a, l'C,
Screw the nut-shaped fixing member 26 into the male threaded portion 23,
The wall portion 5a' of the main body 5 (the mounting is fixed in a sandwiched state).Furthermore, a first connection port 27 is opened and formed in the side wall of the cylinder 19, and this first connection port 27 has a The suction tube 15 is connected to the cylinder 19. A second connection port 28 for connecting the suction tube 16 is provided in the bottom wall of the cylinder 19. B VC is connected to the suction tube 16 with the axial direction (pipe axis) of the suction tube 16 completely aligned with the cylinder axis t.
As shown in FIG. 1, the suction tube 16 extending from the bottom wall of the tube 9 first extends in the direction of the cylinder axis t, then gently curves and extends toward the insertion section 3. is connected to the middle of the treatment instrument insertion hole 7.

On the other hand, on the innermost end side of the piston 20σ, a large diameter portion 29'f has an outer diameter that neatly fits and slides on the inner surface of the cylinder 190!
11 on the outer side from the large diameter portion 29.
11th order, small diameter part 30, medium diameter part 31, 17 formed in the current state
4, a biasing member locking portion 32 and a finger rest portion 33 are arranged in series. Further, around the outer end of the piston 20, a biasing member 34 formed into a cylindrical shape using a comb or the like is concentrically disposed, and the upper end of the biasing member 34 is biased toward the piston 20. The lower end of the barbed member 34 is tightly fitted and locked into the member locking portion 32, and the lower end of the barb member 34 is airtightly inserted into the urging member locking portion 35, which is an annular groove formed on the outer periphery of the fixing portion 26. It is fitted and engaged. In this embodiment, the biasing member 34 is formed into a so-called skirt shape whose lower side widens. Further, a constricted portion 3 is provided in the middle of the peripheral wall of the biasing portion 34 and protrudes inward over its entire circumference.
6 is formed, and this constriction part 36 is a seventh part to be described later.
As shown in the figure, when the piston 20 is fully pushed in and crushed, the upper and lower walls 36a, 36 of the constriction 36
b are overlapped and joined together. Further, in the valley part of the constriction part 36, there are a plurality of small openings (LSI
... is formed, and the biasing member 3 is inserted into each small hole 37...
It is designed to be occluded when 4 is crushed.

Thus, the biasing member 34 biases it outward, and normally it is kept on standby at the position shown in FIG.

In this standby position, the large diameter portion 29 facing the first connection port 27 has a notch 3 as shown in FIG.
8 is formed, and a guide groove 39 is formed along the axial direction of the peripheral surface Kid piston 26 on the opposite side (back side) of the notch 38. The f-id groove 39 is screwed into the cylinder 19, and the f-id pin 40 is fitted into and engaged with the f-id groove 39, so that the piston 20f is moved only in its axial direction.

Furthermore, the above-mentioned notch 38 is provided in the large diameter portion 29 of the piston 20.
Vertical grooves 41.41 connecting the small diameter portion JOf and the small diameter portion JOf are provided on both sides, thereby communicating the notch portion 38 and the small diameter portion 30. Moreover, at the outer end of the piston 20,
A ventilation hole 42 that opens on the outer surface of the finger rest 33 is provided. The ventilation hole 42 communicates with the outside of the small diameter portion 30 via a through hole 43 provided in the small diameter portion 30. When the piston 2o is in a standby state, the notch 38, the vertical grooves 41, 41, and the small diameter 30° through hole 43 form a passage that communicates with the ventilation hole 42.
It communicates with the outside via. Moreover, the notch portion 38 is the vertical groove 4
1.41, the area around the small diameter part 30, the area around the medium diameter part 31, and the small diameter part 30 are connected directly to the outside via LSI...

On the other hand, the piston 20f: A horizontal hole 44 is formed in the circumferential surface of the large diameter portion 29 facing the first connection port 27 at the push-in position (see FIG. 7) where the piston 20f hits the bottom surface of the cylinder 19. Furthermore, a communication hole 45 that opens into the bottom space of the cylinder 19 is formed at the inner end of the piston 20 (7).
This communication hole 45 communicates with the horizontal hole 44 . In other words, the horizontal hole 44 and the communication hole 45 are connected to the first and second connection ports 27 and 28' in the position where the piston 20 is pushed in.
f It forms a communicating passage. However, this horizontal hole 4
4, the male stone 20 is closed by the inner surface of the cylinder 19 in the standby state, as shown in FIG.

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

First, in a standby state (equipped state) as shown in FIG. 2, the piston 2o is raised by the urging force of the urging member 34, and the horizontal hole 44 is closed by the inner surface of the cylinder 19. On the other hand, the notch 38 is aligned with the first connection port 27 and communicates with the suction tube 15 . Also,
The cutout portion 38 has a vertical groove 41.41, a small diameter portion 30. Through hole 43
It communicates with the outside through the ventilation hole 42, and at the same time, the small hole 37 of the biasing member 34... communicates with the outside even when all the valves are closed. Therefore, the suction tube 15 is removed by a suction device (not shown).
Even if suction is performed through the suction tube 16, only outside air is suctioned, and suction from the blocked suction tube 16 side is not performed.

Therefore, when performing suction, place your finger on the finger rest 33 of the piston 20 to close the open end of the vent hole 42, and move the piston 2θ as shown in FIG.
Push it in until it touches the inner bottom of the At this time, the biasing member 34
The small holes 37 are initially open, but are closed when the biasing member 34 is crushed during pushing as shown in FIG. In other words, the upper and lower wall portions 3 of the constriction portion 36
By overlapping and joining 6h and 36b, the small holes 37 are closed. Further, the notch 38, which was inwardly aligned with the first connection port 27, is removed from the position of the first connection port 27 and is closed by the inner surface of the cylinder I9 below. Thus, it is completely cut off from the outside world. On the other hand, the horizontal hole 44 of the piston 2° is aligned with the first connection port 27 (1\/), and the first
The connection port 27 is connected to the horizontal hole 44, communication: ii, 45 and the second
It communicates with the suction tube 16 through a connection port 28 . Therefore, this suction switching valve 12 can be pulled down by +i and li in order to open the suction pipe line I4.

A, when completely stopping this suction operation, the piston 20
When you release your finger, the urging force of the urging member 34 automatically returns to the standby state shown in FIG. 2 and stops the suction operation. In this return process, the small holes 37 are opened before the ventilation holes 42, so that the inside of the ventilation holes 42 becomes a negative pressure, which prevents dirt and the like from being sucked in from the suction tube 16 side.

Next, the cleaning aid A used to clean the suction pipe 14 will be described with reference to FIG. 8. That is, this cleaning aid A has a cap 5 attached to the opening of the cylinder 19 from which the piston 20 and biasing member 34 of the suction switching valve 12 are removed.
Consists of 1. This cap 51 is made by press-fitting a metal tip 53 into a cap body 52 made of rubber, and the tip 53 has a small hole (orifice) 54 formed therein for leakage. Further, the lower end edge 55 of the cap body 52 is watertightly fitted and engaged with the biasing member locking portion 35, which is an annular groove formed on the outer periphery of the fixing member 26. . [The cat cap 51 can be attached to and detached from the biasing member locking portion 35 by utilizing the elasticity of the cap body 52.

Next, use this cleaning aid A to clean the suction line 1 of the endoscope 1.
4 will be explained.

First, by holding the biasing member 34 of the suction switching valve 12 and pulling it strongly upward, the lower end of the biasing member 34 is pushed onto the fixing member 3.
6 from the urging member retaining portion 35 and remove it together with the piston 20.

As shown in FIG. 8, the cleaning aid A is attached to the opening of the cylinder 19. Therefore, a cleaning liquid injection tube (not shown)' (i=
From this connection, the entire cleaning liquid is sent to the suction line 14. Thus, the cleaning liquid flows to the outlet 9 side and the mouthpiece 18 side of the suction pipe 14, and completely cleans the suction pipe 14. - Mapuko,
Cleaning liquid is also sent to the inside of the cylinder 19 in the suction switching valve 12, but if the opening part of the cylinder 19 is left completely open at this time, a large amount of cleaning water will flow out from there, causing the universal code 4 Side suction line 14
In order to thoroughly clean the area, it is necessary to supply a high quality cleaning solution, and unless this is done, the cleaning will be insufficient. Furthermore, if the opening of the cylinder 19 were to be completely closed, the cleaning liquid sent to the cylinder 19 would stagnate inside the cylinder, and therefore the dirt would remain -1.

However, by using the cleaning aid Ai of the present invention, a large amount of leakage can be avoided, and the leakage small hole 54
A certain amount of water will flow out through the pipe, allowing the stagnation containing dirt to be discharged outside. Note that the outflow amount can be adjusted by adjusting the diameter of the small leakage hole 54 (orifice diameter). According to this configuration, the suction pipe line 14
It would be possible to reduce the amount of cleaning fluid used over the entire length without reducing the cleaning effect.

On the other hand, FIG. 9 shows another embodiment of the cleaning aid A. Cap 60rci leakage small hole 61 of this embodiment
One end of a metal cap body 62 is formed so that it can be fitted into the opening of the cylinder 19, and a sealing ring 63 is attached to the outer periphery of the cap body 62. Further, a knob portion 6a is integrally formed at the outer end of the cap body 62. The cap 60 in this case is fitted into the opening of the cylinder 19 and is engaged by frictional force.

In each of the above embodiments, the cylinder 1 of the suction switching valve 12
Although the case where the cleaning aid A is attached to the opening of the cylinder 19 has been described, the present invention is not limited to this. For example, the case where the cleaning aid A is attached to the insertion opening 8 and
The cleaning liquid may be sent through the opening. Furthermore, it goes without saying that it can be used not only for cleaning the suction pipe 14 but also for cleaning the entire air and water supply pipe described above. In addition, if there are multiple openings other than the outlet of the pipe and the opening for sending the cleaning liquid, a cleaning aid may be attached to each of the multiple openings,
You may select any one of these openings for installation.

Furthermore, it is desirable to select the diameter of the small leakage hole depending on the location where it will be used so that the flow will spread over the entire length of the pipe.

As explained above, if the cleaning aid of the present invention is used,
When cleaning the conduit of an endoscope, it is possible to clean the conduit without sacrificing the cleaning effect over the entire length of the conduit, and the amount of cleaning liquid used at that time can be greatly reduced.

[Brief explanation of drawings]

FIG. 1 is a schematic explanatory diagram of the entire endoscope using the cleaning aid of the present invention, FIG. 2 is a side sectional view of the suction switching valve of the endoscope, and FIGS. 3 and 4 are Perspective views of the male stone seen from different directions, Figure 5 is part of Figure 2 ■-■
Along the line / Cross-sectional view, Figure 6 is a cross-sectional view along the line ■-■ in Figure 2, Figure 7
The figure is a side sectional view of the suction switching valve in the pushed-in state.
FIG. 9 is a side sectional view showing the cleaning aid attached to the endoscope, and FIG. 9 is a side sectional view showing another embodiment of the cleaning aid attached to the endoscope.ノ...Endoscope, 8...Insertion port, 9...Exit, 12
... Suction cutoff (Q Lee valve, 14... Suction pipe line, 18.
...Base, 19...Cylinder, A...Cleaning aid,
51...Key 1. 52...Gear, main body, 53
...Chip, 541. Small hole, 6o... Cap, 6
1... Small hole, 62... Cap body, 63... Seal ring. Applicant's Representative Patent Attorney Takehiko Suzue Figure 1 Figure 2 Figure 3 Figure 5 Figure 6 Figure 7 Figure 8

Claims (1)

[Claims] In an endoscope cleaning aid used when cleaning the conduit of an endoscope having a conduit having multiple openings in addition to the outlet, the endoscope conduit 34; 1. A cleaning aid for an endoscope, comprising a cap attached to at least one opening other than the outlet and the opening for feeding cleaning liquid, and provided with a small hole for leakage.