JP2002369824A - Unit type clip device for endoscope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a unit type clip device for endoscope which is easily set when mounting the unit of a clip on the sheath side and can be used in a correct state at all times. SOLUTION: In the unit type clip device for endoscope, the clip 2, a clip connection hook 4 freely engageably and disengageably connected to the base end of the clip 2 and a clip closing ring 6 for forcibly turning the clip 2 to a closed state are integrally made into a unit by a temporary fixing means 9. By providing the clip connection hook 4 and a connection member 5 with screw connection means 4n and 5n and connecting the screw connection means 4n and 5n, the clip connection hook 4 and the connection member 5 are connected straightly on the extension line of the center axis of the tip part of an operation wire 3.

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. 5 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. The freely connected clip connecting hook 4 and a clip closing ring 6 for forcibly closing the clip 2 are integrally unitized by a temporary fixing means 9 made of an adhesive having low adhesiveness. ing.

[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 receiving member 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, when the engaging pin 5a of the connecting member 5 is passed through the engaging hole 4a of the clip connecting hook 4, the clip connecting hook 4 is connected to the connecting member 5 as shown in FIG. The clip closing ring 6 cannot be straightened, and it is difficult to set the clip closing ring 6 correctly at the tip of the ring receiving member 7 or the like. 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-mentioned 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 a temporary fixing means, and connected to the clip connecting hook in a sheath capable of accommodating the clip in the distal end. In an endoscope unit-type clip device in which an operation wire having a connecting member attached to a distal end thereof and a ring receiving member receiving a clip closing ring at the distal end are inserted and arranged, screws are attached to the clip connecting hook and the connecting member. By providing coupling means and coupling the screw coupling means,
The clip connecting hook and the connecting member are connected straight on an extension of the central axis of the distal end portion of the operation wire.

[0008]

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 operation 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. 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 connecting portion 2c formed in an α-shape. The base connecting portion 2c is deformed to form a pair of arms. 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 supporting the pair of arms 2a of the clip 2 at the back. At the same time as pushing from the side, the base end connecting portion 2c is deformed, whereby the pair of arms 2a is closed, and the pair of arms 2a is held in a state where the in-vivo diseased part 100 is sandwiched.

FIG. 1 shows a distal end portion of a unit-type clip device for an endoscope in a ready state before use. A clip connecting hook 4 is engaged with a proximal end portion of a clip 2 at a distal end portion bent in a hook shape. A short cylindrical clip closing ring 6 for joining and forcibly closing the clip 2 is arranged so as to surround a connecting portion between the clip 2 and the clip connecting hook 4.

A temporary fixing means 9 made of, for example, a low-adhesive adhesive or the like is provided in the internal space of the clip closing ring 6.
So that the clip 2, the clip connecting hook 4, and the clip closing ring 6 are 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.
The ring receiving coil 7, which is a coil pipe formed by tightly winding a stainless steel wire with a fixed diameter and having a fixed diameter at the base end thereof, and the operation wire 3 having the base end mounted on the slider 22 of the operation section 20 are relatively positioned. Are independently and coaxially inserted and arranged to be able to advance and retreat in the axial direction.

A connecting member 5 for connecting to the clip connecting hook 4 is fixed to the tip of the operating wire 3, and a ring receiving cylinder 7 a into which the clip closing ring 6 is fitted is attached to the tip of the ring receiving coil 7. Is fixed.

The rear end of the clip connecting hook 4 and the connecting member 5
A female screw 4n and a male screw 5n, which are screw connection means to be screwed to each other, are formed straight at the tip of each of them. However, the clip connecting hook 4 side may be a male screw and the connecting member 5 side may be a female screw.

When the unit of the clip 2 is mounted on the sheath 1 side in order to use the endoscope unit-type clip device thus constructed, the clip connecting hook 4
And the male screw 5n of the connecting member 5 are screwed together.

Then, as shown in FIG. 2, the clip connecting hook 4 and the connecting member 5 are connected straight on the extension of the central axis of the distal end portion of the operation wire 3. Therefore, the clip closing ring 6 is smoothly fitted into the ring receiving cylinder 7a only by pulling the operation wire 3 toward the operation section 20 side.

Then, if the sheath 1 is sent out to the front side, the clip 2 is accommodated in the distal end of the sheath 1 and preparation for use is completed.

[0021]

According to the present invention, the clip connecting hook and the connecting member are provided with the screw connecting means, and the screw connecting means is connected to the clip connecting hook and the connecting member so that the clip connecting hook and the connecting member are at the center of the distal end portion of the operation wire. Since the clip unit is connected straight on the extension of the axis, when the clip unit is mounted on the sheath side, the setting can be easily performed, and the clip unit 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 side 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 side cross-sectional view of the clip in an indwelling state of the endoscope unit-type clip device according to the embodiment of the present invention.

FIG. 5 is a side sectional view of a distal end portion of the conventional endoscope unit-type clip device in a state of being prepared for use.

FIG. 6 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.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sheath 2 Clip 3 Operation wire 4 Clip connection hook 4n Female screw (screw connection means) 5 Connection member 5n Male screw (screw connection means) 6 Clip closing ring 7 Ring receiving coil (Ring receiving member) 7a Ring receiving cylinder (Ring) Receiving member) 9 Temporary fixing means

Claims (1)

[Claims] 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 endoscope unit-type clip device in which the ring receiving member received in is inserted and arranged, by providing a screw connecting means to the clip connecting hook and the connecting member, by connecting the screw connecting means,
A unit type clip device for an endoscope, wherein the clip connecting hook and the connecting member are connected straight on an extension of a central axis of a distal end portion of the operation wire.