JP2002360587A - Unit type clipping device for endoscope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a unit type clipping device for an endoscope which can be used always in a right state by easily setting the unit of a clip to the side of a sheath in the case of mounting the unit of the clip to the side of the sheath. SOLUTION: In the unit type clipping device for the endoscope obtained by uniting the clip 2, a clip connection hook 4 and a clip closing ring 6, a connection member 5 fitted to the tip of an operation wire 3 and the hook 4 are connected in a straightly connected state by engaging a plurality of sets of an engaging pin 5a arranged in a direction vertical to the axial direction of the wire 3 and an engaging hole 4a to be engaged with the engaging pin 5a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a unit-type clip device for an endoscope which is used to pass through a treatment tool insertion channel of an endoscope to perform hemostasis, ligation or marking in a body.

[0002]

2. Description of the Related Art FIG. 8 shows a distal end portion of a conventional endoscope unit-type clip device before use. The clip 2 is openable and closable by an external force, and is disengaged from a base end of the clip 2. A clip connecting hook 4 that is freely connected and a clip closing ring 6 for forcibly closing the clip 2 are temporarily fixed means 9 made of a low-viscosity adhesive or the like.
Are integrated into a unit.

[0003] In a sheath 1 capable of accommodating the clip 2 in the distal end, an operation wire 3 having a coupling member 5 for coupling to a clip coupling hook 4 attached to the distal end, and a clip closing ring 6 supported by the distal end. And a ring support tube 7 for insertion.

[0004]

When the unit of the clip 2 is mounted on the sheath 1 side, the conventional endoscope unit-type clip device as described above protrudes from the distal end of the connecting member 5. The connecting pin 5a is passed through an engaging hole 4a formed in the clip connecting hook 4 to connect the connecting member 5 to the clip connecting hook 4.

However, in such a state that the engaging pin 5a of the connecting member 5 is passed through the engaging hole 4a of the clip connecting hook 4, as shown in FIG. The clip closing ring 6 cannot be set straight, for example, by fitting the clip closing ring 6 correctly to the tip of the ring support tube 7, and may be damaged by use in an incomplete setting state. Was.

Accordingly, the present invention provides a unit-type clip device for an endoscope that can be easily set when the clip unit is mounted on the sheath side and can always be used in a correct state. The purpose is to:

[0007]

In order to achieve the above object, a unit-type clip device for an endoscope according to the present invention is connected to a clip which can be opened and closed by an external force, and is detachably connected to a base end of the clip. A clip connecting hook and a clip closing ring for forcibly closing the clip are integrally unitized by temporary fixing means, and connected to the clip connecting hook in a sheath capable of accommodating the clip in the distal end. Member and a clip connecting hook in an endoscope unit-type clip device in which an operating wire having a connecting member attached to a distal end thereof and a ring support tube for supporting a clip closing ring at the distal end are inserted therethrough. And a plurality of sets of engaging pins arranged in a direction perpendicular to the axial direction of the operation wire and engaging holes engaging with the engaging pins are engaged. It is those linked to the state.

When a plurality of sets of engaging pins and engaging holes are arranged in parallel at intervals in the axial direction of the operation wire, the diameter of the connecting portion does not increase.

[0009]

Embodiments of the present invention will be described with reference to the drawings. FIG. 3 shows an overall configuration of a unit-type clip device for an endoscope, in which a clip 2 is arranged at a distal end portion of a flexible sheath 1 made of, for example, a tetrafluoroethylene resin tube or the like. Although the clip 2 can be opened and closed by an external force, FIG. 3 shows a state where the clip 2 is opened.

An operating section 20 connected to the proximal end of the sheath 1
A slider 22 is slidably attached to a main body shaft 23 having a finger hook 23a attached to an end thereof, and a proximal cylindrical body 21 attached to a proximal end of the sheath 1 is attached to the main body shaft 23.
The slider 22 is slidably disposed independently of the slider 22.

FIG. 4 shows the clip 2 placed with the mucous membrane of the affected part 100 in the body sandwiched therebetween. The clip 2 is formed, for example, by bending a stainless steel plate for a spring or the like, and has a claw-like portion 2b that is bent inward and protrudes from each end of the pair of arms 2a.

The base ends of the pair of arms 2a are connected to each other by a base connection 2c formed in a slightly square α shape. The arms are formed by deforming the base connection 2c. The part 2a opens and closes.

In the indwelling state, the base end connecting portion 2c of the clip 2 is drawn into a short cylindrical clip closing ring 6 described later, and the clip closing ring 6 has its distal end to support the pair of arms 2a of the clip 2 at the back. At the same time as pressing from the side, the base end connecting portion 2c is deformed, whereby the pair of arms 2a is closed in parallel, and the pair of arms 2a is held in a state where the affected part 100 is sandwiched.

FIG. 5 shows a distal end portion of the unit type clip device for an endoscope in a state before use. A clip connecting hook 4 is engaged with a proximal end portion of the clip 2 at a distal end portion bent in a hook shape. A short cylindrical clip closing ring 6 for being connected and forcibly closing the clip 2
Are arranged so as to surround a connecting portion between the clip 2 and the clip connecting hook 4.

The internal space of the clip closing ring 6 is filled with a temporary fixing means 9 made of, for example, a low-adhesive adhesive, so that the clip 2, the clip connecting hook 4 and the temporary fixing means 9 are connected. It is integrally unitized so as not to move relatively easily. However, if a slightly strong external force is applied, the temporary fixing means 9 collapses and the unit state is eliminated.

In the sheath 1, a main body shaft 23 of the operation unit 20 is provided.
A ring support tube 7 made of, for example, a tetrafluoroethylene resin tube or the like, having a base end attached thereto, and an operation wire 3 having a base end attached to a slider 22 of an operation section 20,
They are relatively independently inserted so as to be able to advance and retreat in the axial direction. A connecting member 5 for connecting to the clip connecting hook 4 is attached to the distal end of the operation wire 3.

The connecting member 5 has an engaging pin 5a which is inserted into an engaging hole 4a formed in the clip connecting hook 4 and protrudes laterally (in a direction perpendicular to the axial direction of the operation wire 3). A counterbore 7a into which the clip closing ring 6 is fitted is formed on the inner peripheral surface of the distal end of the ring support tube 7.

A plurality of pairs (here, two pairs) of the engagement hole 4a and the engagement pin 5a are spaced apart in the axial direction of the operation wire 3.
Are arranged in parallel. With such an arrangement, even if a plurality of sets of the engagement holes 4a and the engagement pins 5a are provided, the diameter of the connecting portion does not increase.

In order to use the endoscope unit-type clip device configured as described above, when attaching the unit of the clip 2 to the sheath 1 side, the clip connecting hook 4
Of the connecting member 5 in each of the plurality of engaging holes 4a.
Insert.

Then, as shown in FIG. 1, the clip connecting hook 4 and the connecting member 5 are connected in a straight state, and a plurality of sets of the engaging holes 4a and the engaging pins 5a are engaged with an interval. Therefore, the clip connecting hook 4 and the connecting member 5 do not rotate at the connecting portion, and a straight connected state is maintained.

As a result, the clip closing ring 6 is smoothly fitted into the counterbore-shaped portion 7a of the ring support tube 7 only by pulling the operation wire 3 toward the operation portion 20 as shown in FIG.

Then, if the sheath 1 is sent out to the front side, as shown in the side sectional view and the front sectional view in FIGS.
The clip 2 is housed in the distal end of the sheath 1 in a state of being elastically deformed and narrowed, and preparation for use is completed.

[0023]

According to the present invention, the connecting member and the clip connecting hook attached to the tip of the operating wire are connected to the engaging pin and the engaging pin arranged in the direction perpendicular to the axial direction of the operating wire. By engaging a plurality of engagement holes with each other and connecting them in a straight state, the clip connecting hook and the connecting member are kept in a straight connected state and the state is maintained. When mounted on the side, setting can be easily performed, and the device can always be used in a correct state.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a distal end portion of a unit-type clip device for an endoscope according to an embodiment of the present invention in a state of being prepared for use.

FIG. 2 is a side cross-sectional view of the distal end portion of the unit-type clip device for an endoscope according to the embodiment of the present invention in a state of being prepared for use.

FIG. 3 is an external front view showing the entire configuration of the unit-type clip device for an endoscope according to the embodiment of the present invention.

FIG. 4 is a front sectional view of the clip in an indwelling state of the unit-type clip device for an endoscope according to the embodiment of the present invention.

FIG. 5 is a front cross-sectional view (a side cross-sectional view of a clip-side unit) of a distal end portion of the endoscope unit-type clip device according to the embodiment of the present invention in a state of being prepared for use.

FIG. 6 is a side cross-sectional view of a distal end portion of the endoscope unit-type clip device according to the embodiment of the present invention in a state where preparation for use is completed.

FIG. 7 is a front sectional view of a distal end portion of the endoscope unit-type clip device according to the embodiment of the present invention in a state where preparation for use is completed.

FIG. 8 is a side sectional view of a distal end portion of a conventional endoscope unit-type clip device in a state of being prepared for use.

FIG. 9 is a side cross-sectional view of a distal end portion of a conventional endoscope unit-type clip device in preparation for use.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sheath 2 Clip 3 Operation wire 4 Clip connection hook 4a Engagement hole 5 Connection member 5a Engagement pin 6 Clip closing ring 7 Ring support tube 9 Temporary fixing means

[Procedure amendment]

[Submission date] June 14, 2001 (2001.6.1)
4)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0015

[Correction method] Change

[Correction contents]

The internal space of the clip closing ring 6 is filled with a temporary fixing means 9 made of, for example, a low-adhesive pressure-sensitive adhesive, whereby the clip 2, the clip connecting hook 4, and the clip closing ring 6 are connected. It is unitized integrally so as not to move relatively easily. However, if a slightly strong external force is applied, the temporary fixing means 9 collapses and the unit state is eliminated.

Claims (2)

[Claims] 1. A clip which can be opened and closed by an external force, a clip connecting hook which is detachably connected to a base end of the clip, and a clip closing ring for forcibly closing the clip. An operation wire having a connecting member for connecting with the clip connecting hook attached to the distal end in a sheath which is unitized integrally by the stopping means and which can accommodate the clip in the distal end, In the unit-type clip device for an endoscope in which a ring support tube for supporting the clip is inserted, the connection member and the clip connection hook are disposed in a direction perpendicular to an axial direction of the operation wire. A unit type for an endoscope, wherein a plurality of sets of an engaging pin and an engaging hole engaged with the engaging pin are engaged and connected in a straight state. Clip device. 2. The unit-type clip device for an endoscope according to claim 1, wherein the plurality of sets of the engaging pins and the engaging holes are arranged in parallel at intervals in the axial direction of the operation wire.