JP2002186581A - Forceps stopper of endoscope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a forceps stopper of an endoscope good in sealability at the time of passage of a treatment instrument and making it hard to leak a dirty liquid in the body at the time of insertion and extraction of the treatment instrument in spite of simple constitution. SOLUTION: As a slit 12, one '-' shape center slit 12a and parallel slits 12b comprising a plurality of slits crossing the center slit 12a almost at a right angle are formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a forceps stopper of an endoscope which is disposed at an entrance of a treatment tool insertion channel of the endoscope.

[0002]

2. Description of the Related Art A forceps stopper for an endoscope seals an entrance portion of a treatment tool insertion channel so that contaminants and the like in the body are not spouted in a normal state where the treatment tool is not used, and a treatment tool is inserted into the treatment tool insertion channel. At the time of insertion / removal, an operation for opening / closing the entrance is not required, and it is necessary to seal the inside of the treatment tool so as to prevent in-vivo contaminants and the like from being ejected.

Therefore, the simplest conventional forceps stopper for an endoscope is a rubber closing film 91 having a negative or positive slit 92 as shown in FIGS. 9 and 11, for example. Is arranged at the entrance of the treatment instrument insertion channel.

[0004]

However, as described above,
The forceps stopper having the shape of a + or + shaped slit 92 formed in the closing membrane 91 is, as shown in FIG. 10 and FIG.
When 00 passes, the slit 92 is pushed out to the peripheral part by the treatment tool 100 to form a large gap A between the slit 92 and the outer surface of the treatment tool 100, and there is a case where the body waste fluid spouts out therefrom. is there.

Accordingly, the present invention provides a forceps stopper for an endoscope which has a simple structure, has a good sealing property when a treatment tool passes therethrough, and hardly leaks body fluid when inserting or removing the treatment tool. The purpose is to.

[0006]

In order to achieve the above object, a forceps stopper for an endoscope according to the present invention is made of a material having elasticity so as to close an entrance portion of a treatment instrument insertion channel of the endoscope. A closing membrane is disposed, and a slit that is normally opened by a treatment tool passing therethrough while maintaining a closed state due to the elasticity of the closing membrane is formed in the forceps stopper of the endoscope formed in the closing membrane by a slit. A single "-"-shaped center slit and a parallel slit composed of a plurality of slits substantially orthogonal to the center slit are formed.

[0007] Two of the plurality of slits constituting the parallel slit are divided on both sides at positions substantially equidistant from the center of the center slit, and the distance between the two slits is set. When the diameter is larger than the radius of the treatment tool passing therethrough and smaller than the diameter, it is effective in reducing the gap generated between the treatment tool and the outer surface of the treatment tool.

[0008]

Embodiments of the present invention will be described with reference to the drawings. FIG. 3 shows an endoscope in which a base end of an insertion section 2 covered with a flexible tube is connected to a lower end of an operation section 1.

The distal end of the treatment instrument insertion channel 3 inserted into the insertion section 2 is open to the outside at the distal end of the insertion section 2, and the forceps plug 10 disposed at the entrance of the treatment instrument insertion channel 3 is operated by the operating section 1. Projecting obliquely upward from the lower end portion of the.

FIG. 4 shows a state in which the treatment tool 100 is passed through the forceps stopper 10. The forceps stopper 10 is formed in a tubular shape by using a resilient rubber material or the like. It is detachably attached to an inlet mouthpiece 30 provided at the end.

A closure membrane 11 is formed inside the forceps plug 10 at a position facing the opening of the inlet mouthpiece 30, as shown in FIG. 1, which is a plan view showing a state where the treatment tool 100 is not passed through. In addition, the closing film 11 is formed with a substantially K-shaped slit 12.

The slit 12 has a cut-like shape formed in the closing film 11 by, for example, a razor or the like.
A parallel slit 12b composed of two slits substantially orthogonal to 2a is formed.

The two slits forming the parallel slit 12b are arranged on both sides at positions substantially equidistant from the center of the center slit 12a. The slit 12 is closed due to the elasticity of the slit.

When the treatment tool 100 is passed through the forceps stopper 10,
As shown in FIG. 2, the slit 12 is elastically deformed by the treatment tool 100 in a state where the slit 12 is pushed open, and the slit 12 is formed by a “−”-shaped center slit 12 a and a parallel slit 12 b substantially orthogonal thereto. As a result, the opened slit 12 and the treatment tool 10
Only a small gap A is generated between the outer surface of the first and second surfaces.

In this case, by setting the dimension so that the distance L between the two parallel slits 12b is larger than the radius D / 2 and smaller than the diameter D of the treatment tool 100 passing therethrough, The parallel slits 12b are located not on the center of the treatment tool 100 but on the outer edge thereof, which is effective in that the area of the gap A becomes very small.

FIG. 5 shows a closing membrane 1 according to a second embodiment of the present invention.
1 is a plan view of FIG. 1, in which three parallel slits 12b are provided, and the slits 12 are formed in a substantially "king" shape in which a center slit 12a does not protrude from the parallel slits 12b.

Even in this case, as shown in FIG. 6, when the treatment tool 100 is passed, only a small gap A is generated between the pushed-open slit 12 and the outer surface of the treatment tool 100.

The outer two parallel slits 12b
Are formed not on the center of the treatment tool 100 but on the outer edge (D / 2 <L <D), respectively.
The area of the gap A becomes extremely small, and the amount of body waste discharged when the treatment tool 100 is used can be extremely reduced.

FIG. 7 shows a closing membrane 1 according to a third embodiment of the present invention.
FIG. 5 is a plan view of FIG. 1, in which five parallel slits 12b are further added one by one between the three slits of the second embodiment. By doing so, as shown in FIG. 8, the gap A generated when the treatment tool 100 is passed can be further reduced.

[0020]

According to the present invention, since a single "-"-shaped center slit and a parallel slit composed of a plurality of slits substantially perpendicular to the center slit are formed as slits, Although having a simple configuration, the gap generated when the treatment tool passes through is small and the sealing property is good, so that the amount of leakage of contaminants in the body when inserting and removing the treatment tool can be significantly suppressed.

[Brief description of the drawings]

FIG. 1 is a plan view of a closure membrane of a forceps stopper of an endoscope according to a first embodiment of the present invention.

FIG. 2 is a plan view showing a state in which a treatment tool is passed through a forceps stopper of the endoscope according to the first embodiment of the present invention.

FIG. 3 is an external view of an endoscope according to an embodiment of the present invention.

FIG. 4 is a longitudinal sectional view of a forceps stopper of the endoscope according to the first embodiment of the present invention.

FIG. 5 is a plan view of a closing membrane of a forceps stopper of an endoscope according to a second embodiment of the present invention.

FIG. 6 is a plan view showing a state in which a treatment tool is passed through a forceps stopper of an endoscope according to a second embodiment of the present invention.

FIG. 7 is a plan view of a closing membrane of a forceps stopper of an endoscope according to a third embodiment of the present invention.

FIG. 8 is a plan view showing a state in which a treatment tool is passed through a forceps stopper of an endoscope according to a third embodiment of the present invention.

FIG. 9 is a plan view of a closure membrane of a forceps stopper of a conventional endoscope.

FIG. 10 is a plan view showing a state in which a treatment tool is passed through a forceps stopper of a conventional endoscope.

FIG. 11 is a plan view of a closing membrane of a forceps stopper of a conventional endoscope.

FIG. 12 is a plan view showing a state in which a treatment tool is passed through a forceps stopper of a conventional endoscope.

[Explanation of symbols]

 Reference Signs List 3 treatment tool insertion channel 10 forceps plug 11 closing membrane 12 slit 12a center slit 12b parallel slit 100 treatment tool

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Satoshi Kidooka 2-36-9 Maeno-cho, Itabashi-ku, Tokyo Asahi Gaku Kogyo Co., Ltd. F-term (reference) 4C061 AA00 BB00 CC00 DD00 HH23 JJ06

Claims (2)

[Claims] 1. A closing membrane made of a resilient material which is disposed so as to close an entrance portion of a treatment instrument insertion channel of an endoscope, usually maintains a closed state by elasticity of the closing membrane. In the forceps stopper of the endoscope in which a slit that is elastically pushed open by a treatment tool that passes through is provided, as the slit, one "-"-shaped center slit and substantially orthogonal to the center slit A forceps stopper for an endoscope, wherein a parallel slit comprising a plurality of slits is formed. 2. A method according to claim 1, wherein two of the plurality of slits forming the parallel slit are divided on both sides at a position substantially equidistant from the center of the center slit, and the two slits are arranged between the two slits. 2. The endoscope forceps stopper according to claim 1, wherein the distance between the endoscopes is larger than the radius of the treatment instrument passing therethrough and smaller than the diameter.