JPS6349126A - Suction controller of endoscope - Google Patents

Abstract

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

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a suction control device for an endoscope that controls a suction line in the endoscope.

[Conventional technology]

A suction control device for an endoscope, which is conventionally known in, for example, Japanese Utility Model Publication No. 56-94441, is inserted into a forceps port communicating with a forceps channel.

The configuration is such that the connection state of the suction line to the forceps channel can be switched. That is, a suction line is connected to the intermediate side wall portion of the cylinder that communicates with the forceps channel, and an inner cylinder is fixed inside the cylinder. A valve is provided within this inner cylinder and is fitted in a dual-function manner. This valve is normally open and the forceps port is open. Outside air is sucked through these openings to reduce the strain on the suction pump. When sending liquid into the body cavity through the forceps channel and the child channel, the valve is slid to close the suction port.

[Problem that the invention seeks to solve]

By the way, in the above-mentioned conventional device, the relief port is closed with a finger during suction, and therefore internal dirt, etc. sucked in through the forceps channel may reach the relief port due to inertia and adhere to the operator's fingers.

There were hygiene issues. Moreover, such a phenomenon also occurs when a patient coughs.

The present invention has been made by focusing on the above-mentioned problems.

The purpose is to provide a suction control device for an endoscope that can prevent operating fingers from getting dirty even though the relief opening is blocked by the fingers during suction.

[Means and operations for solving the problems] In order to solve the above problems, the present invention provides a suction path that communicates with a channel that communicates with two body cavities, and suction is drawn through the channel via this suction path. At the same time, a leak path is provided which has an outer end opening that branches off from the middle of the suction path and opens to the outside and can be closed with a finger, and the connection portion of this leak path to the suction path is connected to the channel of the suction path. This is an endoscope suction control device in which the side portion and the leak path side portion are connected to form an angle of 90° or less.

Since the connection portion of the leak path to the suction path is connected such that the channel side portion of the suction path and the leak path side portion form an acute angle, the sucked body fluid etc. will not go around to the leak path side.

〔Example〕

FIG. 1 shows a first embodiment of the invention. The drawing shows a suction control device 2 provided in an operating section 1 of an endoscope. That is, this suction control device 2 is incorporated in a forceps mouth portion 4 that communicates with a forceps channel 3 inserted across the operating portion 1 and an endoscope insertion portion (not shown). The main body of the forceps mouth portion 4 also serves as the cylinder 5 of the suction control device 2.

A hollow piston body 6 is slidably provided inside the cylinder 5. This piston body 6 has holes 7 and 8 formed in the lower center and side walls, respectively.

An inner cylinder 9 is connected to the center portion of the upper wall. This inner cylinder 9 is movably fitted into a support cylinder 11 attached to the upper end of the cylinder 5. The inner cylinder 9 is biased upward by a coil spring 12 installed between the inner cylinder 9 and the support cylinder 11. Moreover, the inner cylinder 9 thus biased is waiting against the lower end of the syringe receiver 13 attached to the upper edge of the support cylinder 11. Note that the inner surface of the syringe receiver 13 is also tapered to match the circumferential surface of the tapered connecting cylinder portion of the syringe.

Roughly, on the outer periphery of the support cylinder 11, there are a pair of upper and lower collars 14.
15 is formed and supported by the cylinder 5 via this. Also, cylinder 5. The outer ends of the support tube 11 and the syringe receiver 13 are covered with a cap 16 made of resin. and.

A notch 17 is formed in the cap 16 so as to communicate with the inside of the inner cylinder 9 and the piston body 6.

A syringe is inserted through the notch 17. Further, this cut 17 is normally closed.

Furthermore, a leak path 18 is formed between the outer periphery of the support cylinder 11 and the inner surface of the cylinder 5 by cutting out a part of the flanges 14 and 15. It communicates with the hole 19 and communicates with the outside. Also,
The leak passage 18 is formed by a leak pipe 21 projecting from the side wall portion of the cylinder 5. A leak pipe 21 that extends and forms this leak path 18 is connected to a midway point of a suction pipe 23 that forms a suction path 22.

One end of the suction tube 23 is connected to a suction port 24 formed in the side wall of the cylinder 5. Also.

This suction port 24 is adapted to face and match the hole 8 of the piston body 6 in the standby state.

In this invention, the connection of the leak path 18 to the suction path 22 is such that the channel side portion 23a of the suction tube 23 and the leak path side portion 21a of the leak tube 21 are connected to form an acute angle, as shown in FIG. It is.

When using the forceps mouth portion 4 incorporating the suction control zero charge 2, first, in the clearing state, the suction tube 23 is connected to a suction pump (not shown) and is subjected to suction action. but.

Since the leak hole 19 of the cap 16 communicates with the outside through the leak path 18, even if the suction port 24 matches the hole 8 and communicates with the forceps channel 3, it only sucks outside air through the leak path 18.

No suction action is applied to the forceps channel 3 side.

Further, when performing a suction operation, the operator closes the outer end opening of the leak hole 19 of the cap 16 with his or her finger.

As a result, external air is no longer suctioned through the leak path 18, so that a suction action is exerted on the forceps channel 3 side of the endoscope, thereby making it possible to aspirate body fluids in one body cavity. That is, it passes through the inside of the piston body 6 from the forceps channel 3 and is discharged to the outside through the suction line 22 in the suction tube 23.

By the way, as shown in FIG. 1, the connection of the leak path 18 to the suction path 22 is such that the channel side portion 23a of the suction tube 23 and the leak path I11 portion 21a of the leak tube 21 are connected to form an acute angle. It is. Therefore, during this suction, the body fluid flowing in the suction path 22 flows directly along the suction path 22 and is unlikely to go around to the leak tube 21 side. That is, body fluids and the like do not enter the leak tube 21 and wet or stain the finger of the operator who closes the tip opening of one of the leak holes.

On the other hand, when a syringe such as a syringe is connected and used, the connecting cylinder portion of the syringe is inserted into the notch 17 of the krub 16 and fitted into the syringe receiver 13. At this time,
The tip of the connecting cylinder of the syringe hits the upper end of the inner cylinder 9 and pushes down together with the piston body 6 against the biasing force of the coil spring 12. As a result, the hole 8 of the piston body 6 is displaced from the suction port 24 of the cylinder 5, and communication therebetween is cut off. Therefore, the syringe communicates only with forceps channel 3.

For example, a medicinal solution can be injected.

Also, if you release the syringe from the pressed state.

The piston body 9 returns to the state shown in FIG. In other words.

The syringe must be pressed down at all times during injection.

FIG. 2 shows a second embodiment of the invention. In this embodiment, a syringe receiver 13 is directly attached to the upper end of the inner cylinder 9, and a valve member 3 made of an elastic material is attached to the lower end of the inner cylinder 9.
The syringe receiver 13 and the valve member 30 are each integrally formed with membrane valves 31 and 32 that open under a certain pressure. Further, when the inner cylinder 9 is pushed down, the valve member 30 is moved to the valve seat 3 formed at the inner bottom of the cylinder 5.
It is designed to be pressed against 3 and closed. That is, when a syringe is connected and the valve body 30 is pushed down together with the inner cylinder 9, the portion communicating with the suction port 24 is cut off. Then, it can be injected into the forceps channel 3 from a syringe through the inner cylinder 9. Further, a protrusion 34 is provided on the upper side wall of the inner cylinder 9 so as to project therefrom. Correspondingly, a flange 35 is provided on the upper inner wall of the support cylinder 11 to protrude around the entire circumference, and a part of the flange 35 is cut out. The projection 35 can pass through this notch 36. As shown in FIG. 2, in the holding state, the protrusion 35 is on the upper side through the notch 36, and the cap 16
It is held against the bottom surface of the When pushing down the inner cylinder 9, the protrusion 35 is passed through the notch 36, and when keeping this pressed down state, the inner cylinder 9 is rotated and positioned below the collar 35, thereby engaging the inner cylinder 9. Let it stop. therefore.

It is easy to operate because there is no need to maintain pressing force.

Further, as shown in FIG. 2, the suction port 24 communicates with the suction path 22 from around the valve body 30 in the closed state.

Furthermore, the leak pipe 21 in this embodiment is connected to the suction pipe 23 at a right angle outside the cylinder 5. moreover,
This suction pipe 23 has an opening 37 opened in the side wall of the cylinder 5.
It communicates with the leak passage 18 in the cylinder 5 via.

Therefore, the leak path 18 in this portion is bent, making it difficult for liquid to pass through.

Note that the other usage methods are almost the same as those of the first embodiment.

FIG. 3 shows a third embodiment of the invention. In this embodiment, an inner tube 9 is fixedly provided inside the cylinder 5, and a syringe receiver 13 is formed at the outer end of the inner tube 9. Further, a valve member 40 is attached to the inner end of the inner cylinder 9. Furthermore, a leak passage 41 is formed between the outer periphery of the inner tube 9 and the cylinder 5. A leak pipe 21 is connected to this leak passage 41. Also, this leak pipe 2
1 is connected in the middle of a suction path 22 connected to the side wall of the cylinder 5 so as to communicate with the forceps channel 3.

In the case of this embodiment, the suction path 22 is bent at its connection portion, but the connection portion of the leak pipe 21 to the suction path 22 is such that the channel side portion of the suction path 22 and the leak pipe portion are connected to each other. They are connected to form an acute angle.

Therefore, the same effects as those described above can be achieved.

On the other hand, another leak conduit 42 is connected to the leak passage 41. Further, this leak conduit 42 protrudes to the outside of the cylinder 5 and is connected to a leak hole 19 formed in the cap 16.

The valve member 40 is formed with a check valve 43 that allows flow to flow from the outside, and has a closing effect during suction operation, and allows the liquid to pass when injected using a syringe.

FIG. 4 shows a fourth embodiment of the present invention. In this embodiment, as in the third embodiment, an inner tube 9 is fixedly provided inside the cylinder 5, and a syringe receiver 13 is formed at the outer end of the inner tube 9. Similarly, a valve member 40 is attached to the inner end of the inner cylinder 9. leak pipe 2
1 is installed outside the cylinder 5. This leak pipe 21 is connected to the middle of the suction pipe 22. The connection portion of the leak passage 18 to the suction passage 22 is such that the channel side portion of the suction pipe 23 and the leak passage portion form an acute angle.

Therefore, in the case of this embodiment as well, the same effects as described above can be achieved. In addition, other uses can be made in the same manner as in the above embodiment.

FIG. 5 shows a fifth embodiment of the present invention. In this embodiment, a connecting portion between a suction path 51 and a leak path 52 is formed inside the cylinder 5, along with the forceps port 50. In this connecting portion, the connecting portion of the leak path 52 to the suction path 51 is connected such that the channel side portion of the suction path 51 and the leak path portion form an acute angle.

The suction path 51 is a suction pipe 2 extending outside the cylinder 5.
Connected to 3. In addition, the leak path 52 is connected to the cap 1
It communicates with a leak hole 19 formed in 6. A closing tongue piece 53 is integrally formed on the opening edge of the leak hole 19. As shown in FIG. 5, this closing tongue piece 53 normally leaves the opening part of the leak hole 19 open, but when closing the opening part of the leak hole 19, the closing tongue piece 53 is inserted from the outside. Press down and bend the leak hole 19.
All you have to do is cover the opening.

A syringe receiver 13 is formed in the forceps port 50, and the forceps port 50 is covered with a cap 16. A notch 17 is formed in the portion of the cap 16 corresponding to the forceps opening 50.

Note that an elastic O-ring 54 corresponding to a syringe is attached inside the forceps mouth 50.

FIG. 6 shows a sixth embodiment of the present invention.

This is an example in which the leak hole 19 of the first embodiment is modified. That is, a lid 60 integrally formed with the cap 16 is provided at the upper edge of the opening of the leak hole 19, and the lid 60 is elastically deformed to close the opening of the leak hole 19. . 1 Normally, the leak hole 19 is opened as shown in FIG. 6, but it is now possible to close one leak hole by pushing the lid 60 with your finger as shown by the arrow in the figure. ing.

FIG. 7 shows a seventh embodiment of the present invention.

This forms a suction path 22 communicating with the suction tube 23 between the inner surface of the cap 16 attached to the syringe 5 and the syringe 5, and furthermore, the cap 16 has the suction path 22 connected to the suction tube 23.
A leak hole 60 forming a leak path 18 connecting in the middle of the
It has been established.

The angle between the suction path 22 and the leak path 18 is made acute as in the above embodiment.

Note that, as a possible disclosed example, there is one in which the leak pipe is bent at an acute angle in the middle.

〔Effect of the invention〕

As explained above, in the present invention, the connection portion of the leak path to the suction path is connected such that the channel side portion of the suction path and the leak path portion form an angle of 90° or less. Suctioned body fluids etc. do not go around to the leak road side. Therefore, the user's hands will not get dirty or wet.

Can be used hygienically.

[Brief explanation of drawings]

10 is a sectional view of the first embodiment of the invention, FIG. 2 is a sectional view of the second embodiment of the invention, FIG. 3 is a sectional view of the third embodiment of the invention, and FIG. is a cross-sectional view of the fourth embodiment of the present invention, FIG. 5 is a cross-sectional view of the fifth embodiment of the present invention, FIG. 6 is a cross-sectional view of the sixth actual flow example of the present invention, and FIG. FIG. 7 is a sectional view of a seventh embodiment of the present invention. 2... Suction control m+ device, 3... Forceps channel, 1
8... Leak path, 22... Suction path, 24... Suction port, 51... Suction path, 52... Leak path. Applicant's representative Patent attorney Atsushi Tsuboi Fig. 1 Fig. 2 Fig. 3 Fig. 4 Fig. 5 Fig. 6 Fig. 1, ylt Display Patent Application No. 1988-191440 2, Title of Invention Endoscope Suction Control device 3, relationship with the amendment person case Patent applicant (037) Olympus Optical Industry Co., Ltd. 4, Agent UBE Building 7, 3-7-2 Kasumigaseki, Chiyoda-ku, Tokyo;
Contents of amendment (1) “Leak path 18” on page 12, line 4 of the specification
is corrected to "leak pipe 21". (2) "In the 4th line of page 14 and the 5th line of the same page,"
Correct "syringe" to "cylinder". (3) Add the number "13" and its "lead line" as shown in the attached drawing in Figure 5, which is not shown.

Claims (1)

[Claims] A suction path communicating with a channel leading into the body cavity is provided, and suction is drawn through the channel via this suction path, and an outer end opening that branches off from the middle of the suction path and opens to the outside can be freely closed with a finger. A leak path having a section is provided, and a connection portion of this leak path to the suction path is such that the channel side portion of the suction path and the leak path side portion are 9
A suction control device for an endoscope, characterized in that the devices are connected to form an angle of 0° or less.