JP3134057B2 - Structure of remote control unit in endoscope treatment tool - Google Patents

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 used for an operation, a medical examination, or the like, in which a treatment portion provided at a distal end portion of an interlocking cable inserted into a body through an endoscope is remotely controlled. The present invention relates to a structure of a remote operation unit for connecting a base end of the interlocking cable to an operation unit operated and operated.

[0002]

2. Description of the Related Art In a conventional treatment tool for an endoscope shown in FIG. 4, both cup blades 10 are attached to a distal end portion 4b of a coiled flexible guide tube 4 inserted into a body through an endoscope. At the same time, the coiled flexible reinforcing tube 6 is fitted to the base end 4a of the coiled flexible guide tube 4 and the outer periphery thereof.
Are inserted into the mouth 13, and the female screw portion 18 of the mouth 13 is
The male thread 17 of the operation section main body 12 is screwed to the operation section main body 1.
2 is connected to the movable operation body 14. The coil-shaped flexible reinforcing tube 6 is for preventing the coil-shaped flexible guide tube 4 from being broken near the mouth 13.

[0003] A locking ring 26 is attached to the coiled flexible guide tube 4 between the holding portion 20 of the male screw portion 17 and the holding portion 21 of the female screw portion 18 to provide the coiled flexible reinforcement. While being locked to the pipe 6,
A locking ring 27 is attached to the coiled flexible reinforcing tube 6 between 0 and 21 and is inserted around the locking ring 26 of the coiled flexible guide tube 4. A locking ring 27 of the reinforcing tube 6 is clamped by the clamping portions 20 and 21.

The two cup blades 10 are remotely operated by a movable operation body 14 via an interlocking wire 7 in a coil-shaped flexible guide tube 4 to open and close.

[0005]

In the above-mentioned coiled flexible reinforcing tube 6, a locking ring 27 is soldered to the upper end of the cover coil 23. Therefore, the locking ring 27 must be formed separately from the cover coil 23 and then attached to the cover coil 23. Therefore, a locking ring 27 is required in addition to the cover coil 23, and the number of parts increases, and the locking ring 27
This requires a molding operation and an attaching operation, which causes a decrease in work efficiency.

An object of the present invention is to improve the coil-shaped flexible reinforcing tube 6 so as to reduce the number of parts and increase the work efficiency.

[0007]

The present invention will be described with reference to the reference numerals in the drawings (FIGS. 1 to 3) of the embodiments described later. This gun claim
The endoscope treatment tool according to the invention of Item 1, is a distal end portion (4b) of a flexible guide tube (4) inserted into the body via the endoscope.
The treatment body (10) attached to the flexible guide tube (4)
It is operated by remote operation by a movable operation body (14) of an operation section main body (12) via an interlocking wire (7) inside. The base end (4a) of the flexible guide tube (4) and the flexible reinforcing tube (6) inserted into the outer periphery thereof are inserted into the mouth (13), and the mouth (13) is inserted. It is fixed to the operation section main body (12). A locking portion (26) is provided on the flexible guide tube (4) between the holding portions (20, 21) provided on the operation portion main body (12) and the mouth body (13) to provide the flexible member. While being locked to the reinforcing pipe (6), the holding portions (2
0, 21) between the flexible reinforcing tube (6) and the locking portion (2).
4) Provided and inserted around the outer periphery of the locking portion (26) of the flexible guide tube (4).

The endoscope according to the second aspect of the present invention.
Treatment instrument is a flexible plan to be inserted into the body through an endoscope.
The treatment body (1) attached to the tip (4b) of the inner tube (4)
0) through the interlocking wire (7) in the flexible guide tube (4).
And move farther by the movable operation body (14) of the operation section body (12).
It is operated by remote operation. The flexible guide tube
The base (4a) of (4) and a flexible support inserted into the outer periphery thereof.
Insert the strong tube (6) into the mouth (13) and
The mouth body (13) is fixed to the operation unit body (12).
You. The operation unit body (12) and the mouth body (13) are provided.
The flexible guide tube (4) is sandwiched between the holding portions (20, 21).
A locking portion (26) is provided to lock the flexible reinforcing tube (6).
Between the two holding parts (20, 21).
A flexible guide tube provided with a locking portion (24) in a flexible reinforcing tube (6)
The flexible reinforcing tube (6) is inserted into the outer periphery of the locking portion (26) of (4), and the flexible reinforcing tube (6) is formed by a coil (23) to form the locking portion (24) of the flexible reinforcing tube (6). ) Is a part of the coil (23), and the coiled locking portion (24) is clamped by the clamping portions (20, 21).

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a treatment tool for an endoscope according to an embodiment of the present invention.

[0010] The treatment tool for an endoscope shown in FIG. 1 is operated by remotely operating a treatment section 2 attached to an interlocking cable 1 inserted into the body through the endoscope by an operation section 3. . <The interlocking cable 1> In the interlocking cable 1, a coil-shaped flexible guide tube 4 is connected between the operation unit 3 and the treatment unit 2, and a proximal end of the coil-shaped flexible guide tube 4. A coil-shaped flexible reinforcing tube 6 is inserted around the outer periphery of the base end 4a of the coil-shaped flexible guide tube 4 at a connecting portion 5 that connects the coil-shaped flexible guide tube 4 to the operating portion 3. An interlocking wire 7 (interlocking wire) is inserted into the guide tube 4. This interlocking wire 7
A protective thin tube 8 is inserted around the outer periphery of the base end 7a.

<Treatment section 2> In the treatment section 2, a support portion 9 is attached to the distal end portion 4b of the coil-shaped flexible guide tube 4, and a pair of cup blades 10 are attached to the support portion 9.
The opening / closing link mechanism 11 for opening and closing the two cup blades 10 while the (treatment body) is supported so as to be openable
Is supported. The distal end (not shown) of the interlocking wire 7 is connected to the opening / closing link mechanism 11.

<Operation unit 3> The operation unit 3 includes an operation unit main body 12, a mouth 13 and a movable operation body 14.
In the operation section main body 12, a fixed operation section 16 is attached to an upper end portion of the guide cylinder 15, and a movable operation body 14 is movably inserted around the outer periphery of the guide cylinder 15 so as to approach the fixed operation section 16. Separate. A male screw portion 17 (screw portion, fixed portion) is formed on the outer periphery of the lower end portion of the guide tube 15. Female screw part 18 (screw part, fixed part) at the upper end in the mouth 13
Is formed and opened upward. An insertion hole 19 is provided in the mouth body 13 from the female screw portion 18 to the lower end thereof, and forms a step with the bottom of the female screw portion 18.
The male screw 17 is screwed into the female screw 18 to
Are connected to the guide tube 15. A holding portion 20 is formed at the lower end of the male screw portion 17, and a holding portion 21 is formed at a step between the female screw portion 18 and the insertion hole 19.
Is formed, and a holding space 22 is provided between the holding portions 20 and 21.
Are formed.

<Connecting part 5 between the interlocking cable 1 and the operation part 3>
The coiled flexible reinforcing tube 6 includes a cover coil 23,
At the upper end of the cover coil 23, a locking coil 24 (locking portion) is integrally formed as a part thereof.
The locking coil 24 (locking portion) projects with a diameter larger than the outer diameter of the cover coil 23, and forms a step 25 with the cover coil 23.

The base end 4a of the coil-shaped flexible guide tube 4
At a position slightly lower than the upper end, a locking ring 26 (locking portion) having a diameter larger than the outer diameter of the coil is attached to and protruded from the outer periphery by soldering.

The base end 4a of the coiled flexible guide tube 4
Is inserted into the cover coil 23 of the coiled flexible reinforcing tube 6 from the side of the locking coil 24, and the outer periphery of the locking ring 26 of the coiled flexible guide tube 4 is fitted around the coiled flexible reinforcing tube 6. And the locking ring 26 is locked to the step 25 of the coiled flexible reinforcing tube 6. As described above, the interlocking wire 7 is inserted into the coil-shaped flexible guide tube 4 and the interlocking wire 7
The protective thin tube 8 inserted around the outer periphery of the base end portion 7a is inserted into the base end portion 4a of the coiled flexible guide tube 4.

The base end 4a of the coiled flexible guide tube 4
The coiled flexible reinforcing tube 6 is inserted into the mouth 13 from the female screw portion 18 side, and protrudes from the lower end of the mouth 13 through an insertion hole 19. The proximal end portion 7a of the interlocking wire 7 is connected to the movable operating body 14 through the inside of the guide tube 15 of the operation portion main body 12 from the male screw portion 17 side together with the proximal end portion 4a of the coiled flexible guide tube 4. ing.

A holding space 22 between the holding portions 20 and 21
In the case of (2), the locking coil 24 is clamped by the clamping portions 20 and 21 against the elastic force in a state where the step 25 is applied to the clamping portion 21.

[0018] moving the movable operation member 14 in <endoscopic effect of treatment instrument> operation unit 3 via the interlocking wire 7 of the interlocking rope 1, has two cup blade 10 in the treatment portion 2 closing link mechanism It is opened and closed by 11.

[Features of the present embodiment]
(Other than the other technical ideas described below). In the flexible reinforcing tube 6 formed by the cover coil 23, the locking portion inserted into the outer periphery of the locking ring 26 of the coiled flexible guide tube 4 is a part of the cover coil 23, The stop coil 24 was clamped between the clamping portions 20 and 21. Accordingly, the number of components can be reduced, and the work efficiency of the work can be improved without the need for attaching the locking coil 24 to the cover coil 23.

The locking coil 24 has an elastic force, and is held between the holding portions 20 and 21 against the elastic force. Therefore, the function of the locking coil 24 as a spring washer prevents the threaded portion between the male screw portion 17 and the female screw portion 18 from being loosened.

[Other Embodiments] In addition to the above-described embodiments, the present invention may be configured as shown by * below. * At the base end 4a of the coiled flexible guide tube 4, instead of the locking ring 26 as a locking portion, this locking portion also
Like the locking coil 24 of the coiled flexible reinforcing tube 6, it is formed as a part of the coil.

[Other technical ideas] The technical ideas (other than the claims) that can be grasped from each embodiment are described together with the effects. (B) A treatment tool for an endoscope which is operated by remotely operating a treatment section 2 provided at a distal end portion of an interlocking cable 1 inserted into a body through an endoscope by an operation section 3, A flexible guide tube 4 connected between the operation unit 3 and the treatment unit 2 and a connecting unit 5 connecting the base end 4a of the flexible guide tube 4 to the operation unit 3 are flexible. A flexible reinforcing tube 6 inserted around the outer periphery of the proximal end portion 4a of the flexible guide tube 4 and an interlocking wire (interlocking wire 7) inserted into the flexible guide tube 6; There is a support 9 attached to the distal end 4b of the flexible guide tube 4, and a treatment body (10) supported by the support 9 and connected to the distal end of the interlocking wire (interlocking wire 7). )
The operation unit 3 includes an operation unit body 12
And a fixing portion (screw portion, male screw portion 1) of the operation portion body 12
7), a mouth 13 through which the base end portion 4a of the flexible guide tube 4 and the flexible reinforcing tube 6 are inserted by being connected to a fixed portion (screw portion, female screw portion 18); Movably supported with respect to the base end portion 7 of the interlocking wire (interlocking wire 7).
a movable operation body 14 connected to the operation section main body 12 and the connection section 5 between the interlocking cable 1 and the operation section 3.
Holding portions 20 and 21 provided between fixing portions (a screw portion, a male screw portion 17 and a female screw portion 18) of the body 13 and the mouth 13;
A holding space 22 provided between the holding portions 20 and 21; and a locking portion (locking ring 26) provided on the flexible guide tube 4 and locked to the flexible reinforcing tube 6 in the holding space 22. And a locking portion (locking coil 24) provided in the flexible reinforcing tube 6 in the holding space 22 and fitted around the outer circumference of the locking portion (locking ring 26) of the flexible guide tube 4. The flexible reinforcing pipe 6
Is formed by a coil 23, and the locking portion (locking coil 24) of the flexible reinforcing tube 6 is made a part of the coil 23, and the coil-shaped locking portion (locking coil 24) is 2
The structure of the remote control unit in the treatment tool for an endoscope, wherein the remote control unit is sandwiched between 0 and 21.

Accordingly, the number of components can be reduced, and the locking portion (the locking coil 2
4) The work efficiency can be improved without the need for the attachment work of 4).

(B) In claim 2 or (a), the coil-shaped locking portion (locking coil 24) is
It has elasticity (coil spring) while being sandwiched between 0 and 21. Therefore, the fixed portion (male thread portion 17) and the fixed portion (female thread portion 18) are prevented from loosening by the function of the coiled locking portion (locking coil 24) as a spring washer.

[0025]

According to the remote operation structure of the treatment tool for an endoscope according to the present invention, the locking portion (24) of the flexible reinforcing tube (6) is a part of the coil (23). Thus, the number of parts can be reduced, and the work efficiency of the work can be increased without the need for attaching the locking portion (24) to the coil (23).

[Brief description of the drawings]

FIG. 1A is a front view showing an endoscope treatment tool according to the present embodiment, and FIG. 1B is a partially cutaway front view of FIG. 1A.

FIG. 2A is a partial front view showing a state in which the interlocking cable and the operation unit are disassembled at a connecting portion between the interlocking cable and the operation unit shown in FIG. 1B, and FIG. FIG. 4 is a partial front view in which only an interlocking cable is assembled.

3A is an enlarged sectional view of a connecting portion between an interlocking cable and an operation unit shown in FIG. 1B, and FIG. 3B is an enlarged sectional view of FIG.

FIG. 4A is a partially cutaway front view showing a conventional endoscope treatment tool, and FIG. 4B is an enlarged cross-sectional view of a connecting portion between an interlocking cable and an operation unit shown in FIG. (C) is an enlarged sectional view of (b).

[Explanation of symbols]

4 ... Coiled flexible guide tube, 6 ... Coiled flexible reinforcing tube, 7 ... Interlocking wire (interlocking wire) 10 ... Cup blade body (treatment body), 12 ... Operation unit main body, 13 ... Mouth body, 14 ... Movable operating body, 20, 21 ... Nipping part, 23 ... Cover coil, 24
... locking coil (locking portion), 26 ... locking ring (locking portion).

Claims (2)

(57) [Claims] A treatment body (1) attached to a distal end (4b) of a flexible guide tube (4) inserted into a body through an endoscope.
0) is remotely operated by a movable operation body (14) on an operation section main body (12) through an interlocking wire (7) in a flexible guide tube (4). The base end (4a) of the flexible guide tube (4) and the flexible reinforcing tube (6) inserted into the outer periphery thereof are inserted into the mouth (13), and the mouth (13) is inserted. The operation unit body (1
2), and a locking portion (26) is fixed to the flexible guide tube (4) between the holding portions (20, 21) provided on the operation portion main body (12) and the mouth (13). The flexible reinforcing tube (6) is provided and locked to the flexible reinforcing tube (6), and the locking portion (24) is provided to the flexible reinforcing tube (6) between the sandwiching portions (20, 21) to provide flexibility. A structure of a remote control unit in an endoscope treatment tool, wherein the remote control unit is fitted around an outer periphery of a locking portion (26) of a guide tube (4). 2. A flexible scheme to be inserted into a body through an endoscope.
The treatment body (1) attached to the tip (4b) of the inner tube (4)
0) through the interlocking wire (7) in the flexible guide tube (4).
And move farther by the movable operation body (14) with the operation section body (12).
In a treatment tool for an endoscope which is operated by a separate operation, a base end portion (4a) of the flexible guide tube (4) and an outer periphery thereof are provided.
Insert the inserted flexible reinforcing tube (6) into the mouth (13).
The mouth body (13) is connected to the operation unit body (1).
2), and a pair of clamps provided on the operation unit main body (12) and the mouth body (13).
Locked to the flexible guide tube (4) between the holding parts (20, 21)
A part (26) is provided for engaging with the flexible reinforcing tube (6).
At the same time, the flexibility between the holding portions (20, 21)
The reinforcing pipe (6) is provided with a locking portion (24) to provide a flexible guide pipe.
(4) The flexible reinforcing tube (6) is inserted into the outer periphery of the locking portion (26), and is formed by the coil (23).
The engaging portion (24) of the flexible reinforcing tube (6) is
(23), and this coiled locking portion (24)
Characterized in that it is clamped by the clamping portions (20, 21).
Structure of the remote control unit in the endoscope treatment tool.