JP2009207591A - Operation part of disposable treatment implement for endoscope - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an operation part of a disposable treatment implement for an endoscope, which is usable in an excellent state by easily setting it so as to be the maximum stroke suited to respective models, when using the same operation part for the plurality of models having the different required maximum strokes of an operation wire. <P>SOLUTION: Attaching position selecting means 17, 25 and 27 can optionally select the attaching position of a slide operation member 24 to a wire attaching member 16 from a plurality of different parts in the longitudinal direction of a slit 12 is provided and the attaching position of the slide operation member 24 to the wire attaching member 16 is selected, whereby the maximum movable distance of the wire attaching member 16 inside the slit 12 is set. Also, a fixing means 28 is provided for fixing the attaching position of the slide operation member 24 to the wire attaching member 16 in a state where the attaching position of the slide operation member 24 to the wire attaching member 16 has been selected. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an operation unit of an endoscope disposable treatment instrument used through a treatment instrument insertion channel of an endoscope.

  As a treatment instrument for an endoscope, a sheath portion in which an operation wire is movably inserted and arranged in the axial direction and an operation portion in which a slide operation member for advancing and retracting the operation wire is arranged are provided. There is a disposable treatment tool in which the operation part and the operation part are made into a single-use type.

  However, in order to reduce costs by standardizing parts, when shipping using the same operation unit for multiple models with different required maximum strokes of the operation wire, it is necessary to respond to differences in the required maximum stroke of the operation wire. It is necessary to set the maximum movable distance of the slide operation member.

  If the maximum movable distance is insufficient, the function of the treatment tool cannot be exerted. If the maximum movable distance is excessive, the treatment member jumps out from the distal end of the sheath part, and the treatment member or the sheath part is damaged or buckled. There is a fear.

Therefore, conventionally, the maximum movable distance of the slide operation member can be arbitrarily set by cutting a stopper made of a flexible tube provided in the operation unit main body into an appropriate length (for example, Patent Document 1).
JP 2000-126189 A

  However, if the stopper made of a flexible tube is pressed with a stronger force than expected during use, the stopper may be crushed, resulting in an excessive stroke of the operation wire or poor operation. Further, if the stopper is accidentally cut shorter than a predetermined length, the entire operation unit may not be usable.

  When using the same operation unit for multiple models with different required maximum strokes of the operation wire, the present invention can be easily set to the maximum stroke suitable for each and used in good condition. An object of the present invention is to provide an operation unit for a disposable treatment instrument for an endoscope.

  In order to achieve the above object, the operation part of the disposable treatment instrument for endoscope according to the present invention is a wire mounting member in which the base end of the operation wire is connected in a slit formed in the operation part body in the longitudinal direction. The slide operation member projecting out of the slit is attached, and the operation wire is moved back and forth in the axial direction by moving the wire attachment member along the longitudinal direction of the slit with the slide operation member. In the operation portion of the disposable treatment instrument for endoscope, there is provided an attachment position selection means capable of arbitrarily selecting the attachment position of the slide operation member with respect to the wire attachment member from a plurality of places different in the longitudinal direction of the slit. In the slit by selecting the mounting position of the slide operation member relative to the wire mounting member A fixing means for setting the maximum movable distance of the ear attachment member and fixing the attachment position of the slide operation member to the wire attachment member in a state where the attachment position of the slide operation member to the wire attachment member is selected. It is provided.

  One of the slide operation member and the wire attachment member is provided with an insertion portion loosely fitted in the slit and formed with a plurality of holes along the longitudinal direction of the slit, and the other includes an insertion portion and A cylindrical portion is provided that is loosely fitted to the operation portion main body and has a through-hole formed at a position overlapping one of the plurality of holes, and a connecting pin that engages the through-hole and the hole is provided. Thus, the attachment position selection means may be formed by these.

  Alternatively, one of the wire attachment member and the slide operation member is provided with a cylindrical portion that is loosely fitted to the operation portion main body and has a plurality of through holes formed along the longitudinal direction of the slit, and the other is a cylinder. An insertion portion is provided which is loosely fitted into the slit so as to be located inside the slit and has a hole formed at a position overlapping with one of the plurality of through holes, and is engaged across the through hole and the hole. A connection pin may be provided, and the attachment position selection means may be formed by these.

  Further, the fixing means may fix the connecting pin in a state of being engaged across the through hole and the hole, and the fixing means may be an adhesive.

  According to the present invention, it is possible to set and fix the maximum movable distance of the wire attachment member in the slit by arbitrarily selecting the attachment position of the slide operation member with respect to the wire attachment member from among a plurality of locations. When the same operation unit is used for a plurality of models having different required maximum strokes, it can be easily set to have a maximum stroke suitable for each and used in a good condition.

  A slide operation member that protrudes out of the slit is attached to a wire attachment member that is connected to the base end of the operation wire in a slit that is elongated in the front-rear direction on the operation unit body. By moving the operation wire along the longitudinal direction of the slit, the position of the slide operation member attached to the wire attachment member in the operation portion of the disposable treatment instrument for an endoscope configured so that the operation wire is advanced and retracted in the axial direction. An attachment position selection means that can be arbitrarily selected from a plurality of different locations in the longitudinal direction of the slit is provided, and the position of the wire attachment member in the slit is selected by selecting the attachment position of the slide operation member with respect to the wire attachment member. The maximum movable distance can be set and the wire Providing a fixing means for fixing the mounting position of the slide operation member in a state where the mounting position of the slide operation member against member is selected for the wire attachment member.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a side sectional view of an operation unit of a disposable treatment instrument for endoscope, and FIG. 2 is an exploded perspective view thereof.

  An operation portion main body 11 to which a base end cap 2 of a flexible sheath 1 to be inserted into and removed from a treatment instrument insertion channel of an endoscope (not shown) is connected is formed in a long and narrow bar shape in the front-rear direction, and the position of the central axis line Is formed in a shape divided into right and left except for a region in the vicinity of both front and rear ends. A fixed finger hook 13 for engaging the first finger of the operator's hand is provided at the rear end of the operation unit main body 11.

  The proximal end portion of the operation wire 3 inserted through the entire length of the flexible sheath 1 so as to be movable back and forth in the axial direction is drawn from the proximal end of the flexible sheath 1 into the slit 12 of the operation portion main body 11. The connecting rod 4 fixed to the proximal end of the operation wire 3 is connected to the wire attachment member 16 in the slit 12.

  Reference numeral 22 denotes a connection terminal for connecting a high-frequency power cord (not shown), and the connecting rod 4 is pressed and fixed to the wire attachment member 16 at the tip of the conductive rod of the connection terminal 22. As a result, a high frequency current can be passed from the connection terminal 22 to the operation wire 3.

  The wire attachment member 16 is integrally provided with a cylindrical portion 16a that is loosely fitted to the operation portion main body 11 so as to be movable back and forth in the axial direction. However, in this embodiment, the cylindrical portion 16a formed as a single unit independently from the ease of manufacturing the parts is screwed and fixed to the wire mounting member 16 so as to be integrated.

  A slide operation member 24 having a shape protruding out of the slit 12 is attached to the wire attachment member 16. The slide operation member 24 is formed with two rings for engaging the operator's second finger and third finger, and the wire attachment member 16 is moved by the slide operation member 24 in the longitudinal direction ( That is, the operation wire 3 is moved back and forth in the axial direction by moving along the longitudinal direction of the slit 12.

  A plurality of holes 25 (here, five holes) having the same diameter along the longitudinal direction of the slit 12 are fitted into the slide operation member 24 loosely inside the slit 12 and have a constant depth and a constant interval. The insertion part 24a formed by is provided. In this embodiment, such rows of holes 25 are provided at 180 ° symmetrical positions (back and front).

  On the other hand, the wire attachment member 16 is loosely fitted over the insertion portion 24 a of the slide operation member 24 and the operation portion main body 11 and overlaps with one of the holes 25 of the slide operation member 24. The cylindrical part 16a in which is formed is provided. A plurality of through holes 17 may be provided.

  A hard connecting pin 27 is provided to engage with the through hole 17 of the wire attachment member 16 and the hole 25 of the slide operation member 24 so as to be inserted straight. By sliding the tubular portion 16a of the wire attachment member 16 with respect to the portion 24a, the connecting pin 27 is engaged across the arbitrary hole 25 of the slide operation member 24 and the through hole 17 of the wire attachment member 16. Can do.

  In this way, “attachment position selection means” is configured that can arbitrarily select the attachment position of the slide operation member 24 with respect to the wire attachment member 16 from a plurality of locations that differ in the longitudinal direction of the slit 12. .

  Further, the connecting pin 27 is fixed by an adhesive 28 (fixing means) in a state of being engaged with the through hole 17 and the hole 25, and the hole 25 with which the connecting pin 27 is engaged is selected and attached to the wire. In a state where the mounting position of the slide operation member 24 with respect to the member 16 is selected, the mounting position of the slide operation member 24 with respect to the wire mounting member 16 is fixed. Note that the fixing means for that purpose may be other than the adhesive 28 (for example, a screw).

  In this manner, when the attachment position of the slide operation member 24 with respect to the wire attachment member 16 is arbitrarily selected from a plurality of locations that differ in the longitudinal direction of the slit 12, the maximum movable distance of the slide operation member 24 (that is, the operation wire) 3) is approximately equal to the difference between the total length of the wire attachment member 16 and the slide operation member 24 and the length of the slit 12.

  As a result, as illustrated in FIGS. 3 and 4, the maximum movable distances L <b> 1 and L <b> 2 of the wire attachment member 16 in the slit 12 are changed by changing the attachment position of the slide operation member 24 with respect to the wire attachment member 16. It can be set according to the situation, and the state can be fixed before shipment.

  FIG. 5 shows the operation part of the disposable treatment instrument for endoscope according to the second embodiment of the present invention, in which a plurality of through holes 17 are formed on the tubular part 16a side of the wire mounting member 16 to perform a slide operation. A hole is formed at a position overlapping with one of the plurality of through holes 17 on the insertion portion 24 a side of the member 24. Other configurations are the same as those in the first embodiment. Even if comprised in this way, the effect similar to a 1st Example is acquired.

  Further, in each of the above-described embodiments, the tubular portion 16 a is formed not integrally with the wire attachment member 16 but integrally with the slide operation member 24, and the insertion portion 24 a is not integral with the slide operation member 24 but the wire attachment member 16. It is possible to adopt a structure formed integrally with the.

It is side surface sectional drawing of the operation part of the disposable treatment tool for endoscopes of the 1st Example of this invention. It is a disassembled perspective view of the operation part of the disposable treatment tool for endoscopes of 1st Example of this invention. It is side surface sectional drawing which shows operation | movement of the operation part of the disposable treatment tool for endoscopes of 1st Example of this invention. It is side surface sectional drawing which shows operation | movement of the operation part of the disposable treatment tool for endoscopes of 1st Example of this invention. It is side surface sectional drawing of the operation part of the disposable treatment tool for endoscopes of the 2nd Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Flexible sheath 3 Operation wire 11 Operation part main body 12 Slit 16 Wire attachment member 16a Cylindrical part 17 Through-hole (attachment position selection means)
24 slide operation member 24a insertion part 25 hole (attachment position selection means)
27 Connecting pin (Mounting position selection means)
28 Adhesive (fixing means)

Claims (5)

A slide operation member that protrudes out of the slit is attached to a wire attachment member that is connected to the proximal end of the operation wire in a slit that is elongated in the front-rear direction on the operation body, and the wire attachment member is slid. In the operation part of the disposable treatment instrument for endoscope configured such that the operation wire is moved forward and backward in the axial direction by moving the operation member along the longitudinal direction of the slit,
The slide operation on the wire attachment member is provided by providing attachment position selection means capable of arbitrarily selecting the attachment position of the slide operation member relative to the wire attachment member from a plurality of places different in the longitudinal direction of the slit. By selecting the attachment position of the member, it is possible to set the maximum movable distance of the wire attachment member in the slit,
A disposable treatment instrument for an endoscope, comprising a fixing means for fixing the mounting position of the slide operation member with respect to the wire mounting member in a state where the mounting position of the slide operation member with respect to the wire mounting member is selected. Operation part.   One of the slide operation member and the wire attachment member is provided with an insertion portion that is loosely fitted into the slit and formed with a plurality of holes along the longitudinal direction of the slit, and the other is provided with the inner portion. A cylindrical portion that is loosely fitted to the insertion portion and the operation portion main body and has a through-hole formed at a position overlapping one of the plurality of holes is provided, and the tubular portion extends across the through-hole and the hole. The operation part of the disposable treatment instrument for endoscope according to claim 1, wherein a connecting pin to be fitted is provided, and the attachment position selecting means is formed by these connecting pins.   One of the wire attachment member and the slide operation member is provided with a cylindrical portion that is loosely fitted to the operation portion main body and has a plurality of through holes formed along the longitudinal direction of the slit. Is provided with an insertion portion that is loosely fitted into the slit so as to be located inside the cylindrical portion and has a hole formed at a position overlapping one of the plurality of through holes, and the through hole and the hole. The operation part of the disposable treatment instrument for endoscope according to claim 1, wherein a connecting pin that engages with each other is provided to form the attachment position selecting means.   The operation part of the disposable treatment instrument for endoscope according to claim 2 or 3, wherein the fixing means fixes the connecting pin in a state of being engaged with the through hole and the hole.   The operation part of the disposable treatment instrument for endoscope according to claim 4, wherein the fixing means is an adhesive.

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