JP2002345828A - Endoscope clip device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] A clip having a low cost and excellent strength, in which an indwelling clip does not easily fall off from an affected part by the action of an external force or the like, and excellent indwellability can be obtained. An endoscope clip device is provided. A clip (2) formed so that a pair of arms (2a) connected on the base end side are opened and closed by deforming the vicinity of the base connection part (2c), and a pair of arms (2a) near the base connection part (2c) of the clip (2). In a clip device for an endoscope in which a clip closing ring 6 for maintaining an arm portion 2a closed by engagement is disposed near the distal end of the sheath 1 so as to be detachable from the sheath 1, a pair of arms of the clip 2 By forming each of the portions 2a in a wavy shape, the opposing surfaces of the pair of arms 2a were formed as uneven surfaces without making a hole in the arms 2a or adding other members.

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 to perform hemostasis, ligation or marking 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] A clip closing ring is provided to keep the arm portion of the clip closed by engaging it near the base connecting portion of the clip, and the clip closing ring and the clip are arranged near the distal end of the sheath. Is arranged so as to be detachable from the sheath.

[0004] By operating the operating motion transmitting member inserted through the sheath from the proximal end side of the sheath, the clip closing ring not engaged near the proximal end connecting portion of the clip is engaged with the base of the clip. The clip can be retained in a state where the clip is engaged with the vicinity of the end connection portion so as to sandwich the mucous membrane of the affected part or the like.

[0005]

However, in the state where the mucous membrane of the affected part is simply sandwiched between the arms of the clip, the indwelling force is extremely unstable, and the clip easily falls off due to the action of external force or the like. I will.

In order to solve this problem, there is a clip which has a projection and a protrusion attached to the opposite faces of the arms of the clip to make the opposite face uneven (see Japanese Utility Model Laid-Open No. 60-34810). It takes a lot of man-hours to do
Significant cost increases.

[0007] There is also a clip in which projections are simply applied to opposing surfaces of arms of a clip (Japanese Patent Laid-Open No. 9-289).
No. 989), a sufficient indwelling force cannot be obtained with such a configuration.

Therefore, the present invention has a configuration in which the clip is inexpensive and excellent in strength, the clip during placement is not easily dropped off from the affected part by the action of external force or the like, and an endoscope capable of obtaining excellent placement properties. It is an object to provide a mirror clip device.

[0009]

In order to achieve the above-mentioned 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 maintain the arm in a closed state and is detachably disposed near the distal end of the sheath. An operation transmitting member for engaging the clip closing ring, which is not engaged near the proximal connection portion of the clip, near the proximal connection portion of the clip by remote operation from the proximal end of the sheath is inserted into the sheath. In the disposed endoscope clip device, by forming a pair of arms of the clip in a wave shape, the pair of arms face each other without making a hole in the arms or adding other members. surface It is obtained by forming the uneven surface.

[0010]

Embodiments of the present invention will be described with reference to the drawings. FIG. 2 shows the overall configuration of the endoscope clip device, 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. The clip 2 is in a natural state where no external force is applied (that is, in an open state).

An operation unit 20 connected to the proximal end of the sheath 1
The slider 22 is slidably attached to a main body shaft 23 having a finger hook 23a attached to the end, and the proximal cylindrical body 21 of the sheath 1 is slidably disposed independently of the main body shaft 23 and the slider 22. It is configured.

FIG. 1 shows the distal end portion of the sheath 1 in an enlarged manner. The base end side is configured to be connected by an α-shaped annular base end connection portion 2c.

The arms 2a are each formed in a wave shape by press working or the like, so that the pair of arms 2a can face each other without making a hole or adding any other member to the arms 2a. Has an uneven surface.

The arm 2a of the clip 2 is opened and closed by deforming the base connecting portion 2c. In this figure, the clip 2 is elastically deformed by being pulled into the distal end of the sheath 1 and the arm 2a is opened. 2a is in a constricted state.

An operation wire 3 which is operated in the axial direction by the above-mentioned slider 22 arranged in the operation section 20 is arranged at the axial position of the sheath 1 so as to be able to advance and retreat in the axial direction. A clip connecting hook 4 that can be disengaged from the clip 2 is attached.

The clip connecting hook 4 is formed with an arcuate slit-like engaging groove 4 a having an open side surface so as to engage with the base end of the clip 2. Therefore, the delivery portion of the operation wire 3 bends simply by sending the operation wire 3 slightly forward of the sheath 1, and at the same time, the clip connecting hook 4 bends and the engagement with the clip 2 is released.

In the distal end of the sheath 1, there is disposed a short cylindrical clip closing ring 6 for deforming the proximal connecting portion 2c of the clip 2. The proximal end portion of the clip closing ring 6 is removably fitted to the distal end portion of the flexible operation tube 7 connected to the main body shaft 23 of the operation portion 20, and the proximal end connecting portion 2c of the clip 2 is It is deformed by being pulled into the clip closing ring 6.

In the endoscope clip device thus configured, the sheath 1 is passed through the treatment instrument insertion channel of the endoscope (not shown), and the clip 2 is connected to the sheath 1 as shown in FIG. A pair of arms 2a is opened by projecting forward from the tip.

In this state, the affected part 10 is located between the pair of arms 2a.
0, and when the clip closing ring 6 is pushed out from the operation unit 20 side, as shown in FIG. 4, the distal end of the clip closing ring 6 pushes the pair of arms 2a of the clip 2 from the back side at the same time as the base. The end connecting portion 2c is deformed, whereby the pair of arms 2a are closed in parallel, and the pair of arms 2a sandwich the affected part 100.

Then, the clip connecting hook 4 is detached from the clip 2 and the member on the side of the sheath 1 is pulled out to the hand side, as shown in FIG.
At the same time, the clip 2 is placed so as to sandwich the mucous membrane of the affected part 100.

In this indwelling state, the arm 2a of the clip 2 is formed in a wavy shape. Does not easily fall off the mucous membrane.

[0022]

According to the present invention, the pair of arms of the clip are formed in a wave shape, and the opposing surfaces are formed as uneven surfaces, so that the clip during placement can be easily removed from the affected part by the action of external force or the like. It is possible to obtain excellent indwellability without falling off, and it is possible to manufacture at low cost because there is no need to add other members to the arm, and because there is no need to make a hole in the arm, strength It is also excellent.

[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 an external view showing the entire configuration of the endoscope clip device according to the embodiment of the present invention.

FIG. 3 is a side cross-sectional view showing an open state in opening and closing operations of the clip of the endoscope clip device according to the embodiment of the present invention.

FIG. 4 is a side cross-sectional view showing a closed state in opening and closing operations of the clip of the endoscope clip device according to the embodiment of the present invention.

FIG. 5 is a side cross-sectional view showing the indwelling state of the clip of the endoscope clip device according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sheath 2 Clip 2a Arm part 2c Base end connection part 3 Operation wire (operation operation transmission member) 4 Clip connection hook 6 Clip closing ring 7 Flexible operation tube (operation operation transmission member) 20 Operation part

Claims (1)

[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 engages near the base connection part of the clip. A clip closing ring for keeping the arm closed by disposing the clip closing ring near the distal end of the sheath so as to be detachable from the sheath, and not engaging the vicinity of the base end connecting portion of the clip. An endoscope clip device in which an operation operation transmitting member for engaging a ring near a proximal end connecting portion of the clip by remote operation from a proximal end side of the sheath is inserted through the sheath, and a pair of the clips is provided. By forming the arms in a wavy shape, the opposing surfaces of the pair of arms are formed in an uneven surface without making a hole or adding another member to the arms. Endoscope clip device.