JPH0513409U - Endoscopic treatment tool - Google Patents

Abstract

(57) [Abstract] [Purpose] An operating section in which a treatment section is provided at the tip of an insertion section to be inserted into a body cavity through an endoscope, and a wire connected to the treatment section is provided at the rear end of the insertion section. It is an object of the present invention to prevent a wire from coming off from a wire receiver in a treatment tool for an endoscope which is operated with a slider to collect a diseased tissue or the like in a body cavity. A wire 5 is bent together with a protection pipe 8 and engaged with a wire receiver 9.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a treatment tool for an endoscope used when collecting a diseased tissue or the like in a body cavity.

[0002]

[Prior Art]

 Conventionally, this type of endoscopic treatment tool is inserted into a body cavity through a forceps channel of an endoscope, as disclosed in JP-A-58-27540 and JP-B-62-141810. A treatment section is provided at the tip of the insertion section, and the wire connected to this treatment section is operated by the slider of the operation section provided at the rear end of the insertion section to collect diseased tissue in the body cavity. There is.

However, in such a conventional endoscope treatment tool, since the wire is connected to the slider by bending the rear end of the wire into the wire receiver of the slider, the wire is operated when the slider is operated with a strong force. There was a problem in that the operator could not operate the treatment part because it came out of the wire receiver.

[0004]

[Problems to be solved by the device]

 The present invention has been made in view of the above points, and an object thereof is to prevent a wire from coming off a wire receiver and to provide a safe and reliable endoscopic treatment tool. It is a thing.

[0005]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention provides an insertion portion having a treatment portion at the tip inserted into a body cavity through an endoscope, and the treatment portion provided at the rear end of the insertion portion via a wire. An endoscope treatment instrument having an operation section to be operated, a slider slidably provided on the operation section and having a wire receiver, and a protective pipe provided at a rear end section of the wire, comprising: The rear end portion is bent together with the protection pipe and engaged with the wire receiver.

[0006]

[Action]

 In the present invention, by bending the rear end portion of the wire together with the protective pipe to engage with the wire receiver, the locking force of the wire with respect to the wire receiver is increased, and the wire can be prevented from coming off the wire receiver.

[0007]

【Example】

 Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is a schematic view of an endoscopic treatment tool according to an embodiment of the present invention. The endoscopic treatment tool is inserted into a body cavity through a forceps channel of an endoscope (not shown). A treatment section 2 is provided at the tip of the insertion section 1 and an operation section 3 is provided at the rear end of the insertion section 1.

The insertion portion 1 is formed of a coil tube or a teflon tube formed by winding a piano wire or the like in a coil shape, and has flexibility. The treatment section 2 has a pair of openable and closable gripping members 4 as shown in FIG. 3, and the gripping members 4 are configured to collect a diseased tissue or the like.

Further, one end of a wire 5 is connected to the treatment section 2. As shown in FIG. 2, the other end of this wire 5 is inserted into the insertion portion 1 and connected to the slider 6 of the operation portion 3. When the slider 6 is slid in the front-back direction, it is gripped by the pulling force of the wire 5. The member 4 is adapted to open and close.

At the rear end of the operation section 3, a finger hooking section 7 for an operator to hook his / her finger is provided. A protective pipe 8 for preventing buckling is tightly fitted and fixed to the rear end of the wire 5. The rear end of the protective pipe 8 is bent into a U-shape together with the wire 5, and is engaged with the wire receiver 9 provided on the slider 6. The wire receiver 9 is fixed in the slider 6 by pressing members 10a and 10b screwed into the slider 6. Further, in this embodiment, the insertion portion 1 is formed of a coil tube, and a silver coating 11 is applied to the surface of the coil constituting the coil tube to reduce sliding friction with the wire 5 as shown in FIG. Has been done.

In the endoscopic treatment tool configured as described above, since the rear end of the wire 5 is bent together with the protective pipe 8 and engaged with the wire receiver 9, the engagement of the wire 5 with the wire receiver 9 is prevented. The stopping force is increased and the wire 5 can be prevented from coming off the wire receiver 9.

The present invention is not limited to the above embodiment. For example, in the above-described embodiment, the rear end of the wire 5 and the rear end of the protection pipe 8 are provided on the same plane, but as shown in FIGS. 5 and 6, the rear end of the operation wire 5 is separated from the rear end of the protection pipe 8. You may make it protrude. By doing so, it can be confirmed that the operation wire 5 is surely bent together with the protection pipe 8.

Further, in the above-mentioned embodiment, the silver coating 11 is applied to the inner surface of the insertion portion 1, but as shown in FIG. 7, the outer surface of the insertion portion 1 is applied with Teflon coating 12, so that the foreign matter inside the insertion portion 1 May be prevented from being mixed.

[0015]

[Effect of the device]

 As described above, according to the present invention, the insertion portion having the treatment portion at the tip inserted into the body cavity through the endoscope and the treatment portion provided at the rear end of the insertion portion are operated via the wire. In a treatment instrument for an endoscope having an operation part, a slider slidably provided on the operation part and having a wire receiver, and a protection pipe provided at a rear end part of the wire, The end portion is bent together with the protection pipe and engaged with the wire receiver. Therefore, it is possible to prevent the wire from coming off the wire receiver, and it is possible to provide a safe and reliable endoscopic treatment tool.

[Brief description of drawings]

FIG. 1 is a schematic view of a treatment instrument for an endoscope showing a first embodiment of the present invention.

FIG. 2 is a configuration diagram of an operation unit in the embodiment.

FIG. 3 is a diagram showing a distal end portion of an insertion portion in the embodiment.

FIG. 4 is a configuration diagram of an insertion portion in the embodiment.

FIG. 5 is a view showing a second embodiment of the treatment tool for an endoscope according to the present invention.

FIG. 6 is a diagram showing a rear end portion of the wire in the example.

FIG. 7 is a view showing a third embodiment of the endoscopic treatment tool according to the present invention.

[Explanation of symbols]

1 ... insertion part, 2 ... treatment part, 3 ... operation part, 4 ... grip member,
5 ... Wire, 6 ... Slider, 7 ... Finger hook, 8 ... Protective pipe, 9 ... Wire receiver.

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[Procedure amendment]

[Submission date] April 10, 1991

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 2

[Correction method] Change

[Correction content]

[Fig. 2]

Claims (1)

[Scope of utility model registration request] 1. An insertion section which is inserted into a body cavity through an endoscope and which has a treatment section at a distal end, an operation section which is provided at a rear end of the insertion section and operates the treatment section through a wire, and In a treatment instrument for an endoscope having a slider slidably provided on an operation portion and having a wire receiver, and a protective pipe provided at a rear end portion of the wire, the rear end portion of the wire is provided together with the protective pipe. A treatment instrument for an endoscope, which is bent and engaged with the wire receiver.