JP2009028197A - Forcipate plug of endoscope - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a forcipate plug of an endoscope certainly preventing the leakage of a contaminated liquid caused by water hammering or the like in both states at the times of use and non-use of a treatment implement. <P>SOLUTION: An inside closing film 17 consisting of a material having elasticity, which directly receives the pressure in the treatment implement inserting channel 3 formed in a forcipate plug main body 11, is formed into a V-shaped cross-sectional form gradually narrowed toward its depth and a slit 18, which is closed in a normal state but widened by the passage of the treatment implement 50 inserted into and pulled out of the treatment implement inserting channel 3, is formed at the tip part of the inside closing film 17. A circular small hole 16 widened by the passage of the treatment implement 50 inserted into and pulled out of the treatment implement inserting channel 3 is formed to an outside closing film 15 consisting of the material having elasticity formed in a lid member 12. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a forceps plug of an endoscope for preventing in-vivo sewage or the like flowing backward through a treatment instrument insertion channel of an endoscope from being blown out from an inlet portion of the treatment instrument insertion channel.

  In general, a forceps plug of an endoscope is a forceps plug main body that is attached to the entrance of the treatment instrument insertion channel so as to communicate with the treatment instrument insertion channel, and a lid body that is detachably attached to the protruding side opening of the forceps plug main body. And a closure membrane that is pushed out by the passage of the treatment tool inserted into and removed from the treatment tool insertion channel is formed in each of the forceps plug body and the lid body.

  In the conventional forceps plug, a small hole was formed in the inner closure membrane on the forceps plug main body side, and a slit was formed in the outer closure membrane on the lid side. When there is a sudden increase in pressure in the treatment instrument insertion channel (so-called water hammer phenomenon) due to a patient's getp or the like when it is not in the state, it is difficult to completely prevent scattering of sewage (for example, patents) Reference 1).

Therefore, in the forceps plugs of endoscopes in recent years, the inner closing membrane is formed in a V-shaped cross-sectional shape gradually narrowing toward the back side (that is, the treatment instrument insertion channel side), and the tip end portion thereof is formed. There exists what formed the slit (for example, patent document 2).
JP 2005-52454 A JP 2006-288780 A

  In the endoscopic forceps plug formed in Patent Document 2, when the treatment tool is not used, the water hammer pressure acts in a direction to strongly close the slit of the inner closing membrane, so that the scattering of the sewage Etc. can be almost completely prevented.

  However, since each slit is formed in the inner and outer double closure membranes, in the state of use in which the treatment tool is passed, between the end of the slit that has been spread by the passage of the treatment tool and the treatment tool. Leakage from the generated gap cannot be completely prevented, and sewage leakage may occur due to the water hammer effect.

  An object of the present invention is to provide an endoscopic forceps plug that can reliably prevent leakage of sewage due to a water hammer effect or the like in both states of using and not using a treatment instrument.

  In order to achieve the above object, the forceps plug of the endoscope of the present invention includes a forceps plug main body having a proximal end attached to the entrance of the treatment instrument insertion channel in a state communicating with the treatment instrument insertion channel of the endoscope; An endoscopic forceps plug provided with a lid detachably attached to the projecting end opening of the forceps plug body, and is formed in the forceps plug body and directly receives the pressure in the treatment instrument insertion channel An inner closing membrane made of an elastic material is formed in a V-shaped cross-sectional shape gradually narrowing toward the back side, and is normally closed at the tip end portion and is inserted into and removed from the treatment instrument insertion channel. A slit that is spread by the passage of the treatment instrument is formed, and a circular shape that is spread by the passage of the treatment instrument inserted into and removed from the treatment instrument insertion channel is formed on the outer closing membrane made of a resilient material formed on the lid. A small hole is formed It is those who are.

  In addition, the small hole may be formed in the center position of the outer closing membrane, and the thickness of the outer closing membrane may be formed gradually thinner from the peripheral side to the central side.

  According to the present invention, the inner closing membrane in the forceps plug body is formed into a V-shaped cross-sectional shape that gradually narrows toward the back side, and a slit is formed at the protruding end portion, thereby forming the lid. By forming a circular small hole in the outer closing membrane, leakage of dirt is reliably prevented by the inner closing membrane having a V-shaped cross-section when the treatment tool is not used, and the outer closing membrane is small when the treatment tool is used. Since the leakage of the filth is surely prevented at the hole, it is possible to reliably prevent the leakage of the filth due to a water hammer effect or the like in both the use state and the non-use state of the treatment instrument.

  A forceps plug main body whose proximal end is attached to the entrance of the treatment instrument insertion channel so as to communicate with the treatment instrument insertion channel of the endoscope, and a lid body detachably attached to the protruding end side opening of the forceps plug main body. An endoscopic forceps plug having an inner closure membrane made of a resilient material that is formed in a forceps plug body and directly receives pressure in a treatment instrument insertion channel, gradually stenosis toward the back side. The slit is formed in the lid by forming a V-shaped cross-sectional shape, and forming a slit at the projecting end portion that is normally closed and expanded by passing the treatment instrument inserted into and removed from the treatment instrument insertion channel. In addition, a circular small hole is formed in the outer closing membrane made of an elastic material that is expanded by the passage of the treatment instrument inserted into and removed from the treatment instrument insertion channel.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 4 shows the overall configuration of the endoscope. Reference numeral 1 denotes an insertion portion, and 2 denotes an operation portion connected to the proximal end of the insertion portion 1.

  A treatment instrument insertion channel 3 for inserting the treatment instrument 50 is inserted through the entire length of the insertion section 1, and an inlet opening of the treatment instrument insertion channel 3 disposed at the lower end of the operation section 2 is disposed in the insertion section 1. A forceps plug 10 is detachably attached to prevent the body sewage or the like flowing backward through the treatment instrument insertion channel 3 from blowing out.

  FIG. 1 shows a forceps plug 10. The forceps plug 10 includes a forceps plug main body 11 attached to the inlet base 4 of the treatment instrument insertion channel 3 and a detachable lid 12 at the projecting end side opening of the forceps plug main body 11, and the whole is elastic. It is made of some rubber material.

  A portion of the inner surface of the forceps plug main body 11 near the proximal end is formed with a small diameter portion 13 that can be engaged with and disengaged from the inlet base 4 of the treatment instrument insertion channel 3. The base 4 can be attached or removed in a tightened state.

  The lid body 12 is integrally connected to the base portion of the forceps plug body 11 by a connecting string-like member 14 formed integrally with the lid body 12 by an elastic rubber material, and can be removed from the forceps plug body 11. It is designed to be hung near it.

  The outer peripheral wall of the half portion near the protruding end of the forceps plug body 11 with which the lid 12 is engaged is formed in a reverse tapered cylindrical shape whose diameter gradually increases toward the protruding end, and the side of the lid 12 that is engaged therewith is a forceps. It is formed in a reverse tapered hole shape corresponding to the shape on the plug body 11 side.

  Therefore, when the lid 12 is elastically deformed and covered with the forceps plug body 11 as shown in FIG. 1, the lid 12 is in close contact with the outer surface of the forceps plug body 11 and fixed to the forceps plug body 11. If the lid 12 is elastically deformed from this state, it can be removed from the forceps plug body 11.

  An outer closing film 15 and an inner closing film 17 are formed in the lid 12 and the forceps plug body 11 thus configured. The outer closing membrane 15 formed integrally with the lid body 12 is formed in a shape in which the outer surface is recessed in a hemispherical shape, and is a circular small piece that is expanded by the passage of the treatment instrument 50 inserted into and removed from the treatment instrument insertion channel 3. A hole 16 is formed. FIG. 2 is a plan view thereof.

  The small hole 16 is formed at the central position of the outer closing membrane 15 with a diameter smaller than the outer diameter of the sheath portion that closes most of the treatment instrument 50, and the outer closing membrane 15 is smoothly deformed when the treatment instrument 50 passes. Thus, as shown in FIG. 1, the thickness of the outer closing membrane 15 is formed so as to gradually become thinner from the peripheral side to the small hole 16 side.

  On the other hand, the inner closing membrane 17 that is integrally formed with the forceps plug body 11 and directly receives the pressure in the treatment instrument insertion channel 3 gradually narrows toward the back side (that is, toward the treatment instrument insertion channel 3 side). Formed in a V-shaped cross-sectional shape, a “−”-shaped slit 18 that is normally closed and expanded by the passage of the treatment instrument 50 inserted into and removed from the treatment instrument insertion channel 3 is formed at the protruding end portion. ing. FIG. 3 is an external perspective view of that portion.

  In the endoscope forceps plug thus configured, in the state where the treatment instrument 50 is not inserted into the treatment instrument insertion channel 3, even if a water hammer occurs due to a patient's gop or the like, the pressure is maintained on the inner closure membrane. Since it acts in the direction which closes the 17 slits 18 strongly, filth does not scatter outside.

  However, as shown in FIG. 5, in the use state where the treatment instrument 50 is inserted through the treatment instrument insertion channel 3, as shown in FIG. It is not possible to completely prevent the leakage of dirty liquid from the gap A that occurs between the treatment part 50 and the treatment tool 50.

  However, as shown in FIG. 6, on the lid 12 side, a circular small hole 16 having a diameter smaller than the outer diameter of the treatment instrument 50 is pushed and expanded by the treatment instrument 50, and the small hole 16 allows the treatment instrument 50 to be spaced without any gap. Since it is in a tightened state, leakage of sewage to the outside is reliably prevented there.

  In this way, it is possible to reliably prevent the leakage of dirty liquid from the forceps plug 10 due to the water hammer action in both the use state and the non-use state of the treatment instrument 50. In addition, the outer closing membrane 15 is formed so as to be gradually thinner from the peripheral side to the small hole 16 side, and conversely, it is formed to be gradually thicker from the central side to the peripheral side. Even if it is passed, the outer closing membrane 15 is not easily broken, and excellent durability can be maintained.

It is side surface sectional drawing of the forceps stopper of the endoscope of the Example of this invention. It is a top view of the forceps plug of the endoscope of the Example of this invention. It is a fragmentary perspective view of the forceps plug of the endoscope of the embodiment of the present invention. 1 is an external view illustrating an overall configuration of an endoscope according to an embodiment of the present invention. It is side surface sectional drawing of the use condition by which the treatment tool was let through the forceps stopper main body of the Example of this invention. It is a perspective view of the small hole part of the use state by which the treatment tool was let through the forceps stopper main body of the Example of this invention. It is a perspective view of the slit part of the use condition by which the treatment tool was let through the forceps stopper main body of the Example of this invention.

Explanation of symbols

3 treatment instrument insertion channel 10 forceps plug 11 forceps plug body 12 lid 15 outer closing membrane 16 small hole 17 inner closing membrane 18 slit 50 treatment tool

Claims (2)

A forceps plug body whose base end side is attached to the entrance of the treatment tool insertion channel so as to communicate with the treatment instrument insertion channel of the endoscope, and a lid body detachably attached to the projecting end side opening of the forceps plug body An endoscopic forceps plug comprising:
An inner closing membrane made of an elastic material that is formed in the forceps plug body and directly receives the pressure in the treatment instrument insertion channel is formed in a V-shaped cross-sectional shape that gradually narrows toward the back side. In addition, a slit is formed in the protruding end portion, which is normally closed and expanded by the passage of the treatment instrument inserted into and removed from the treatment instrument insertion channel.
A circular small hole is formed in the outer closing membrane made of a resilient material formed on the lid body, and the hole is pushed and expanded by the passage of the treatment instrument inserted into and removed from the treatment instrument insertion channel. Endoscope forceps plug.   The endoscopic forceps plug according to claim 1, wherein the small hole is formed at a central position of the outer closing membrane, and the thickness of the outer closing membrane is gradually reduced from the peripheral side to the central side.

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