JP2002369823A - Clip device for endoscope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a clip device for endoscope capable of easily clipping a diseased blood vessel or the like that an endoscope can approach only from an oblique direction and performing sure hemostatic treatment. SOLUTION: In the clip device for endoscope, a clip 2 in which a pair of arm parts 2a connected with each other at their base end side is opened and closed by deforming the vicinity of the base end connection part 2c and a clip closing ring 6 maintaining the arm parts 2a in a closed state by being engaged with the vicinity of the base end connection part 2c of the clip 2 are arranged detachably from a sheath 1 near the tip of the sheath 1. The clip 2 and the clip closing ring 6 are engaged so as to turn the pair of the arm parts 2a of the clip 2 to a direction inclined to the extension line of the axis of the sheath 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clip device for an endoscope which is used to pass through a treatment tool insertion channel of an endoscope and is used for stopping blood in a body.

[0002]

2. Description of the Related Art In general, a clip device for an endoscope is configured such that a pair of arms of a clip are connected at a base end side, and the arms are opened and closed by deforming the vicinity of the base connection portion. I have.

[0003] By engaging a clip closing ring near the base end connecting portion of the clip by engaging a clip closing ring near the base end connecting portion by engaging near the base end connecting portion, a pair of arms are used. The clip can be placed in a state where the affected part blood vessel or the like is sandwiched.

[0004]

However, if the clip closing ring is configured to simply engage the clip, the clip will be directed straight forward (ie, in the direction of the extension of the sheath axis). A diseased blood vessel or the like to which the endoscope can be approached only from an oblique direction is difficult to clip and cannot perform reliable hemostasis.

Accordingly, the present invention provides an endoscope clip device that can easily clip a diseased blood vessel or the like to which an endoscope can only approach from an oblique direction and can perform a reliable hemostatic treatment. The purpose is to provide.

[0006]

In order to achieve the above object, an endoscope clip device according to the present invention is characterized in that a pair of arms connected on the proximal end deforms the vicinity of the proximal connection. And a clip closing ring that engages near the base end connecting portion of the clip to keep the arm closed by disposing the clip near the distal end of the sheath. In the endoscope clip device described above, the clip and the clip closing ring are engaged so that the pair of arms of the clip face in a direction inclined with respect to the extension of the axis of the sheath.

The base connecting portion of the clip is formed in an α-shaped annular shape, and a pair of arms are formed by the extended portions. The base connecting portion is an extension of the center line of the pair of arms. May be formed so as to be deviated with respect to.

[0008]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a distal end portion of an endoscope clip device. A flexible sheath 1 inserted into and removed from a treatment tool insertion channel of an endoscope (not shown) is made of, for example, a tetrafluoroethylene resin tube. Is formed.

An operating section (not shown) is connected to the proximal end of the sheath 1, and an operating wire 3 driven in the axial direction by an operation on the operating section moves almost the full length at the axial position of the sheath 1. And is arranged to pass through.

A clip connecting hook 4 is connected to a distal end portion of the operation wire 3 via a connecting member 5, and a base end connecting portion 2 c of the clip 2 is hooked on a hook-like portion at the distal end of the clip connecting hook 4. It is connected to.

The clip 2 is formed, for example, by bending a stainless steel plate material for a spring or the like, and has a pair of arm portions in which an extended portion of a base end connecting portion 2c formed in an α-shaped ring extends forward. 2a.

However, the base connecting portion 2c is formed by a pair of arm portions 2a.
Is formed so as to be deviated from the extension of the center line A of
At each end of the arm 2a, a claw-like portion 2b is formed by being bent inward and protruding.

FIG. 1 shows the state in which the clip 2 is spread by a solid line. When the sheath 1 is inserted into the treatment instrument insertion channel of the endoscope, as shown by a two-dot chain line. , The clip 1 is elastically deformed and the sheath 1 is narrowed.
Stored in the tip of.

The base end of the clip connecting hook 4 is connected to a support pin 5a projecting laterally from the connecting member 5 so as to be rotatably engaged therewith. Therefore, by slightly sending the operation wire 3 forward, the posture of the clip connecting hook 4 is inclined, and the engagement with the clip 2 can be easily released. However, the engagement with the clip 2 may be released by deforming or breaking the distal end portion of the clip connecting hook 4.

In the sheath 1, a flexible ring operation tube 7 which is advanced and retracted from the proximal end side is arranged along the inner surface of the sheath 1, and the distal end thereof has a proximal end connecting portion of the clip 2. Short-clip clip closing ring 6 for deforming 2c
Is attached. Although the ring operation tube 7 is formed of a flexible tube, a tightly wound coil or the like may be used.

The clip closing ring 6 is fitted to the front end of the ring operating tube 7 so as to be detachable forward. Then, the clip 2 is deformed by drawing the base end connecting portion 2c of the clip 2 into the clip closing ring 6, thereby closing the pair of arms 2a.

However, the base end connecting portion 2c is formed by a pair of arm portions 2a.
Is formed so as to be deviated with respect to the extension of the center line A, and the clip 2 is moved with respect to the extension of the axis of the sheath 1 by the engagement between the base end connecting portion 2 c and the clip closing ring 6. It opens and closes in a tilted direction, specifically, diagonally forward.

The clip closing ring 6 is filled with a low-adhesive pressure-sensitive adhesive 9 for preventing the clip 2 connected to the tip of the clip connecting hook 4 from rattling. However, when the clip 2 is pulled into the clip closing ring 6, the adhesive 9 is thereby pushed inward.

In the endoscope clip device configured as described above, the sheath 1 is passed through the treatment tool insertion channel of the endoscope (not shown), and the clip 2 is moved forward from the distal end of the sheath 1. I do.

When the distal end of the sheath 1 protrudes from the distal end of the endoscope, the clip closing ring 6 is protruded from the distal end of the sheath 1 and the operation wire 3 is pulled toward the proximal side, thereby connecting the proximal end connecting portion of the clip 2. 2c is drawn into the clip closing ring 6, and as shown in FIG. 2, the clip 2 is in a state of widening diagonally forward.

Then, the clip closing ring 6 is further pushed out from the operation portion side (or the operation wire 3 is pulled from the operation portion side) and fitted into the clip closing ring 6 up to the arm portion 2a of the clip 2. , A pair of arms 2a
Is closed, and the claw-shaped portion 2b sandwiches the diseased part blood vessel 100 (see FIG. 3).

Then, the clip connecting hook 4 is detached from the clip 2 and the entire member on the side of the sheath 1 is pulled out toward the hand side, so that the clip 2 together with the clip closing ring 6 as shown in FIG. Will be detained.

The present invention is not limited to the above embodiment, and the clip 2 and the clip closing ring 6 are engaged so that the clip 2 faces in a direction inclined with respect to the extension of the axis of the sheath 1. The arm 2a of the clip 2
The base connection portion 2c may be configured in any manner.

[0024]

According to the present invention, the clip and the clip closing ring are engaged with each other so that the pair of arms of the clip face in a direction inclined with respect to the extension of the axis of the sheath. A diseased blood vessel or the like to which the endoscope can approach only from an oblique direction can be easily clipped, and a reliable hemostatic treatment can be performed.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a distal end portion of an endoscope clip device according to an embodiment of the present invention.

FIG. 2 is a side cross-sectional view of a distal end portion of the endoscope clip device according to the embodiment of the present invention during an indwelling operation.

FIG. 3 is a side cross-sectional view of a distal end portion of the endoscope clip device according to the embodiment of the present invention in a detained state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sheath 2 Clip 2a Arm part 2b Claw part 2c Base end connection part 3 Operation wire 4 Clip connection hook 6 Clip closing ring A Center line of a pair of arm parts

Claims (2)

[Claims] 1. A clip formed so that a pair of arms connected on the base end side can be opened and closed by deforming the vicinity of the base connection part, and engaging near the base connection part of the clip. A clip closing ring for maintaining the arm in a closed state by the endoscope clip device arranged so as to be detachable from the sheath near the distal end of the sheath, the clip and the clip closing ring, A clip device for an endoscope, wherein a pair of arms of the clip are engaged so as to face in a direction inclined with respect to an extension of an axis of the sheath. 2. A base connecting portion of the clip is formed in an α-shaped annular shape, and the pair of arms are formed by extending portions thereof, and the base connecting portion is formed at the center of the pair of arms. The clip device for an endoscope according to claim 1, wherein the clip device is formed so as to be deviated from an extension of the line.