JP2001269349A - Treatment tool for endoscope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a simple structured treatment tool for an endoscope having a treating part locked to a lesion in a coelom, by forming the treating part in a substantially spatula shape and forming, on the surface of the treating part, a locking projection locked to the lesion. SOLUTION: The treating part 16 of a grip clamp 10 comprises a body part 52 formed in an oblate spatula shape. The surface of the body part 52 is provided with a plurality of saw tooth projections 54, 54, etc., capable of being hooked to the lesion 53. These projections 54, 54, etc., are formed in hooking shape to the lesion 53 in a pulling direction operation of the treating part 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a treatment tool for an endoscope which is inserted through a treatment tool insertion opening of an endoscope and treats an affected part in a body cavity.

[0002]

2. Description of the Related Art A grasping forceps, which is a treatment tool for an endoscope, is used in combination with a clip device (Japanese Patent Application Laid-Open No. 9-289989) and a snare forceps when using a two-channel treatment fiberscope. . That is, a clipping device or snare forceps is inserted from one channel, a grasping forceps is inserted from another channel, and the affected part is flicked by the treatment part of the grasping forceps, thereby performing the hemostatic treatment of the affected part by the clip device or the affected part by the snare forceps. To facilitate the cautery cutting procedure.

[0003] As a treatment portion of a conventional grasping forceps, there are known W-shaped, crocodile-shaped, V-shaped, and wide-mouthed types for opening and closing two holding pieces.

[0004]

However, the treatment section of the conventional grasping forceps is provided with two holding pieces and an opening / closing mechanism for opening and closing the two holding pieces, so that the structure becomes complicated and There is a disadvantage that the treatment section becomes large.

The present invention has been made in view of such circumstances, and has as its object to provide a simple endoscope treatment tool having a structure capable of dragging an affected part.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a flexible tube which is inserted from a treatment instrument insertion port of an endoscope and is introduced into a body cavity, and a flexible tube inserted through the flexible tube. An operation wire provided at the distal end of the operation wire, a treatment unit provided at the distal end of the operation wire and locked to a diseased part in a body cavity, and an operation unit provided at a rear end of the operation wire for pushing and pulling the operation wire are provided. The treatment tool for an endoscope, wherein a protrusion for locking to be locked to the affected part is formed on a surface of the treatment part.

According to the treatment tool for an endoscope according to the first aspect, since the projection for locking to be locked on the surface of the treatment section is formed, the treatment tool for an endoscope having a simple structure is provided. it can.

When an endoscope treatment tool is used together with a clip device, if the bleeding of the affected part is large, it is difficult to see the surface of the affected part, and it is difficult to accurately apply the treatment part to the affected part.

Therefore, according to a second aspect of the present invention, a cleaning water supply unit is connected to a flexible tube of a treatment instrument for an endoscope, and the cleaning water is supplied from the cleaning water supply unit into a body cavity through the flexible tube. It was supplied and the affected area was washed with water. That is, in the present invention, since the flexible tube is used also as a water channel, it can be effectively used when there is a lot of bleeding in the affected part. Thus, the treatment section can be accurately brought into contact with the diseased part and the diseased part can be dragged, so that the hemostatic treatment by the clip device becomes easy.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a treatment tool for an endoscope according to the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 is a front view of a grasping forceps 10 to which a treatment tool for an endoscope according to the present invention is applied. A grasping forceps 10 shown in FIG.
12, an insertion portion (flexible tube) 14 to be inserted into the treatment instrument insertion port of the endoscope, a treatment portion 16 to be hooked on an affected part, and the like.

A shaft 18 is provided on the hand operation unit 12, and the shaft 18 is slidably fitted into an operating element 20 formed in a cylindrical shape. Flanges 22 and 24 are formed at the upper and lower ends of the operation element 20, and a slider 26 shown in FIG. 2 is fixed to the flange 24 by screws 28. The slider 26 is disposed through the inside of the shaft 18 via slits 30 formed in the longitudinal direction of the shaft 18,
It is slidable along 30. Also, slider 2
6 includes an operation wire 32 disposed inside the shaft 18.
The rear end is fixed, and the treatment section 16 is connected to the distal end of the operation wire 32.

As shown in FIG. 1, a ring-shaped finger hook 34 is formed at the upper end of the shaft 18. This finger hook 3
4, the operator's thumb is inserted during operation, and in this state, the index finger and the middle finger are inserted between the flanges 22 and 24 of the operation element 20. After this, the operator 20
Is pushed and pulled, the treatment section 16 is pushed and pulled via the slider 26 and the operation wire 32.

As shown in FIG. 2, a joint pipe 36 is connected to the shaft 18, and the insertion portion 14 is connected to the joint pipe 36 via a bending preventing tube 38. The joint pipe 36 has a washing water supply pipe 40.
Are formed to protrude. The supply port 42 of the cleaning water supply pipe 40 is detachably connected to the cleaning water supply unit 43 of FIG. 1 and the wire insertion passage 3 of the joint pipe 36 of FIG.
7 is connected. Further, the hand operation portion 12 side of the wire insertion passage 37 is sealed by a donut-shaped packing 44 into which the operation wire 32 is inserted. The packing 44 is fixed by a holding tube 46 screwed into the joint tube 36. Therefore, the cleaning water W supplied from the cleaning water supply unit 43 in FIG. 1 to the supply port 42 in FIG.
The wire insertion passage 37 does not flow to the hand operation unit 12 side.
Through the insertion portion 14.

The insertion section 14 has a flexible tube 48 made of resin.
The flexible tube 48 has a rear end connected to the bend preventing tube 38 and a distal end connected to the treatment section 16.
It is open at the rear. Therefore, the cleaning water W guided to the insertion section 14 is ejected from the distal end opening 50 of the flexible tube 48 via the wire insertion passage 49 of the flexible tube 48.

As shown in FIG. 3, the treatment section 16 comprises a main body 52 formed in a flat spatula shape. A plurality of serrated protrusions (locking protrusions) 54, 54... (See FIG. 3) which are hooked on the affected part 53 of FIG. These projections 54, 54 ...
Is formed into a shape that is hooked on the affected part 53 in the pulling direction operation of the treatment section 16, that is, a shape in which a tapered surface 54A is formed on the pushing direction side and a vertical surface 54B (see FIG. 2) is formed on the pulling direction side. I have. The number of the projections 54 is one.
It may be a book.

Next, the grasping forceps 10 constructed as described above is used.
How to use will be described.

First, as shown in FIG.
After the insertion of the grasping forceps 10 from the first treatment instrument insertion opening (not shown) of the endoscope, the first treatment instrument insertion channel outlet 62 formed on the distal end surface of the insertion section 60 is inserted. The treatment section 16 of the grasping forceps 10 is protruded. The distal end surface of the insertion section 60 has a first treatment instrument insertion channel outlet 6.
A second treatment instrument insertion channel outlet 64, an objective lens 66, and a pair of illumination windows 68, 68 sandwiching the objective lens 66 are formed adjacent to the second treatment tool insertion channel. Since the structure of the endoscope is well-known, a detailed description thereof will be omitted here. However, a light guide formed by bundling a number of optical fibers is provided in the insertion section 60 of the endoscope. The light transmitted through the guide is emitted to the affected part 53 from the illumination windows 68, 68. Then, the observed object image formed by the objective lens 66 is captured by an image sensor (not shown) and converted into an image signal. Then, the signal is processed by a processor device (not shown) to which the electric connector of the endoscope is connected, and is displayed on a monitor (not shown). Thereby, the affected part 53 is observed on the monitor.

Next, prior to the hemostatic treatment of the affected part 53 by the clip device 70 (see FIG. 5), the state of the affected part 53 is observed on the monitor. At this time, if the bleeding of the affected part 53 is large, the cleaning water W is supplied to the supply port 42 from the cleaning water supply unit 43 in FIG. This washing water is supplied to the wire insertion passage 3 in FIG.
It is guided to the opening 50 through 7 and 49, and is injected from the opening 50 to the affected part 53. Thereby, the blood of the affected part 53 is washed away, and the surface of the affected part 53 is clearly observed.

After the affected part 53 is washed with water, the clip device 7
0 is inserted from the second treatment tool insertion port (not shown) of the endoscope,
It is made to protrude from the second treatment instrument insertion channel outlet 64 formed on the distal end face of the insertion portion 60 as shown in FIG.

Thereafter, the projections 54, 54,... Of the treatment section 16 of the grasping forceps 10 are brought into contact with the affected area 53 and hooked.
The treatment section 16 is pulled and operated by the operation element 20. This allows
The affected part 53 is dragged by the treatment part 16, and is then stopped by the clip 72 of the clip device 70. It should be noted that the clipping device 7 while spraying the washing water W
A hemostatic treatment with zero may be performed.

As described above, according to the treatment section 16 of the grasping forceps 10, since it is constituted only by the main body 52 formed in a spatula shape, the number of parts can be reduced, and the affected part 53 is formed on the surface of the main body 52. Serrated projections 54, 54 hooked on
Are formed, it is possible to provide the grasping forceps 10 having a simple structure.

In the grasping forceps 10, the operation unit 12
Is provided with a washing water supply pipe 40, and the washing water is supplied from the washing water supply pipe 40 to the affected part 53 via a flexible tube 48;
Since the affected part 53 can be washed with water, the treatment part 16 can be accurately brought into contact with the affected part 53 and the affected part 53 can be dragged even when the bleeding of the affected part is large. Therefore, this grasping forceps 10
Is used, the hemostatic treatment by the clip device 70 is facilitated.

Since the treatment section of the conventional grasping forceps is provided with two holding pieces and an opening / closing mechanism for the two holding pieces, it is difficult in design to form an outlet for washing water. However, by forming the treatment section 16 in a spatula shape as in the present embodiment, the injection port (opening 50) of the washing water could be easily formed.

[0025]

As described above, according to the treatment tool for an endoscope according to the present invention, since the locking projection for locking to the affected part is formed on the surface of the treatment part, the inner end of the structure is simple. An endoscope treatment tool can be provided.

Further, according to the present invention, the flexible tube is also used as a water channel, and when the bleeding of the affected part is frequent, washing water is supplied to the flexible tube to wash the affected part with water, so that the treatment part is accurately applied to the affected part. be able to. Therefore, the hemostatic treatment by the clip device becomes easy.

[Brief description of the drawings]

FIG. 1 is an overall view of a grasping forceps of the present embodiment.

FIG. 2 is a sectional view of the grasping forceps shown in FIG. 1;

FIG. 3 is an enlarged perspective view of a treatment section of the grasping forceps shown in FIG. 1;

FIG. 4 is an explanatory view showing a state in which cleaning water is being sprayed from a grasping forceps to an affected part.

FIG. 5 is an explanatory view showing a situation in which a grasping forceps is used together with a clip device.

[Description of Signs] 10: grasping forceps, 12: hand operation unit, 14: insertion unit, 1
6 treatment section, 18 shaft member, 20 operator, 32 operating wire, 36 joint pipe, 40 washing water supply pipe, 4
2 ... supply port, 43 ... washing water supply part, 44 ... packing, 4
8 ... flexible tube, 52 ... body part, 53 ... affected part, 54 ...
Protrusion

Claims (2)

[Claims] 1. A flexible tube inserted through a treatment instrument insertion port of an endoscope and introduced into a body cavity, an operation wire inserted through the flexible tube, and a body cavity provided at a distal end of the operation wire. An endoscopic treatment tool comprising: a treatment portion locked to an affected part in the inside; and an operation portion provided at a rear end of the operation wire to push and pull the operation wire, wherein a surface of the treatment portion is provided. A treatment device for an endoscope, wherein a projection for locking is formed on the affected part. 2. A washing water supply unit is connected to the flexible tube, and washing water from the washing water supply unit can be supplied into a body cavity through the flexible tube. 2. The treatment tool for an endoscope according to 1.