JP2001170063A - Operation instrument for endoscopic treatment tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an operation device for an endoscopic treatment tool independently fitting a long insertion member inserted in its inside in such a state as freely advancing/retreating axially, to the endoscope as well as a cannula. SOLUTION: This operation instrument for the endoscopic treatment tool is provided with a guide rail plate 71 freely fixed to and released from an inlet 95 of an insertion channel 91 for the endoscopic treatment tool, a cannula fixing pick 79 freely advancing/retreating and fixing the base end 29 of the cannula 20 on the extension line of the axis of the inlet 95 of the treatment tool insertion channel 91 along the guide rail plate 71, and a long insertion member fixing pick 83 freely advancing/retreating and fixing the base end 19 of a long insertion member 10 on the extension line of the axis of the inlet 95 of the treatment tool insertion channel 91 along the guide rail plate 71.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation of an endoscope treatment tool for operating an endoscope treatment tool having a structure in which a long insertion member is inserted into a mantle tube so as to be able to freely advance and retreat. Related to the device.

[0002]

2. Description of the Related Art A treatment tool for an endoscope which is used by being inserted into a treatment tool insertion channel of an endoscope has a structure in which a long insertion member is inserted and arranged in a mantle tube so as to be able to advance and retreat in an axial direction. There are many things.

[0003] The operating device of such an endoscope treatment instrument is as follows.
Generally, two relatively movable finger hooks are provided, and an operator engages with a finger of the hand to move the long insertion member in the mantle tube in the axial direction.

[0004] However, in such a configuration, it may not be possible to fix the state in which the distal end of the mantle tube protrudes from the distal end of the endoscope by an appropriate length as it is. Therefore, there is one in which the proximal end of the mantle tube can be fixed to the entrance portion of the treatment instrument insertion channel (Japanese Patent Application Laid-Open No. 9-103433).

[0005]

However, in the case where the base end portion of the outer tube can be fixed to the entrance portion of the treatment instrument insertion channel, the long insertion member can be fixed to the entrance portion of the treatment instrument insertion channel. Cannot be fixed to

[0006] This is because the operating device of the treatment tool for an endoscope described in Japanese Patent Application Laid-Open No. 9-103433 has a triple cylinder structure, and is provided on an outer tube fixed to an entrance portion of a treatment tool insertion channel. On the other hand, the inner cylinder can be fixed, but it is structurally impossible to fix the innermost cylinder.

However, if the long insertion member inserted into the mantle tube cannot be fixed to the entrance of the treatment instrument insertion channel, the operation is very inconvenient depending on the type of the treatment instrument. It may be.

For example, when the long insertion member is a puncture needle,
There is a case where it is desired to move only the mantle tube without moving the needle. Further, in the case where the long insertion member is a snare operation wire for cutting a polyp, there is a case where it is desired to move only the mantle tube without moving the snare operation wire.

Accordingly, the present invention provides an endoscope in which not only a mantle tube but also a long insertion member which is inserted through the inside thereof so as to be able to advance and retreat in the axial direction can be individually fixed to the endoscope. It is an object of the present invention to provide an operating device for a treatment tool.

[0010]

In order to achieve the above-mentioned object, an operation device for an endoscope treatment instrument according to the present invention is inserted into a treatment instrument insertion channel of an endoscope and operated by a user from the near side. For manipulating an endoscope treatment tool having an outer tube that advances and retreats in the axial direction and a long insertion member that is inserted into the outer tube and that reciprocates in the axial direction by operation from the proximal side, from the proximal side, In an operation device for a treatment tool for an endoscope, a guide rail plate that can be fixed and released freely with respect to an entrance portion of a treatment tool insertion channel of an endoscope, and a base end portion of a mantle tube are connected to an entrance portion of the treatment tool insertion channel. An outer tube fixed knob that can be advanced and retracted and fixed along the guide rail plate on the extension of the axis, and the base end of the long insertion member is extended along the guide rail plate on the extension of the axis of the entrance portion of the treatment instrument insertion channel. Independent of the mantle tube It is provided with a a withdrawal and fixed freely elongate insertion member fixing knob.

A guide tube which can be inserted through the mantle tube and inserted into the treatment instrument insertion channel of the endoscope may be provided. In this case, the base end of the guide tube is inserted through the treatment instrument insertion channel. A guide tube fixing knob may be provided which is capable of freely moving back and forth and fixed along the guide rail plate on an extension of the axis of the inlet portion of the channel.

[0012]

Embodiments of the present invention will be described with reference to the drawings. 2 and 3 show that a tissue sampling tool, which is one of the treatment tools for an endoscope, is passed through a treatment tool insertion channel 91 of an endoscope 90, and a distal end portion of the tissue sampling tool is inserted into an endoscope insertion portion 92. 2 shows a state in which it is slightly protruded from the tip end portion and a state in which it is retracted.

The tip of a needle shaft 10 (a long insertion member) of the tissue sampling tool is formed with a needle point 11 which is pointed forward, and a tissue is stored in a portion immediately after the needle point 11. Is formed in a shape in which the needle shaft 10 is cut out from the side surface and dented.

A suction passage 13 communicating with the tissue storage recess 12 is formed over the entire length of the needle shaft 10 behind the tissue storage recess 12. Therefore, the portion of the needle shaft 10 behind the tissue storage recess 12 is formed in a pipe shape.

Reference numeral 14 denotes a groove into which a rod or the like is inserted so as to push out the sample tissue collected inside the tissue storage recess 12, and is formed adjacent to the rear side of the tissue storage recess 12.

An outer tube 20 is fitted on the needle shaft 10 so as to be able to advance and retreat in the axial direction. The distal end of the outer tube 20 formed in a thin cylindrical shape is formed in a tapered shape,
As a result, the inner peripheral tip portion of the outer tube 20 is an annular blade 21.

The mantle tube 20 and the needle shaft 10 are inserted into the treatment tool insertion channel 91 in a state of being passed through the flexible guide tube 30 so as not to directly touch the treatment tool insertion channel 91 of the endoscope 90. Has been passed. However, when the treatment instrument insertion channel 91 is used in such a manner as not to be damaged by the needle tip 11 or the blade 21, the guide tube 30 may be omitted.

FIGS. 4, 5 and 6 show the needle shaft 10, the mantle tube 20 and the guide tube 30 independently.
A proximal end portion of the needle shaft 10 is provided with a proximal end portion 19 of a needle shaft made of, for example, a male luer lock for connecting a suction tool, and a proximal end portion of the outer tube 20 and the guide tube 30.
Are provided at the base end portion of a mantle tube base cap 29 fixed to a mantle tube holder 78 and a guide tube holder 74 described later.
And a guide tube base end cap 39 are attached.

FIG. 7 shows a state in which the tissue sampling tool is set on the endoscope 90. Reference numerals 91 and 92 denote a treatment tool insertion channel and a flexible endoscope insertion portion 93, respectively. Denotes an endoscope operation unit, 94 denotes a connection unit to a video processor and a light source device, and 95 denotes a treatment tool insertion mouthpiece protruding from an entrance of the treatment tool insertion channel 91.

The operation section 50 of the tissue sampling tool includes a connection fixing section 60 detachably attached to the treatment tool insertion base 95,
The needle shaft 10 and an advance / retreat operation unit 70 for performing advance / retreat operations and fixing of the mantle tube 20 are integrally connected to each other.
Further, in this embodiment, the advance / retreat operation of the guide tube 30 can also be performed by the advance / retreat operation unit 70.

FIG. 8 shows the connection fixing portion 60 shown in FIG. The connection cylinder 61 is a straight cylindrical shape, and a connection base 62 made of, for example, a luer lock female base that is detachable from the treatment instrument insertion base 95 is formed on one end side,
The treatment tool insertion base 95 is attached so that the axes are aligned. The guide rail plate 71 of the advance / retreat operation unit 70 is rotatably or fixedly connected around the axis to the other end.

FIG. 1 shows the advancing / retreating operation unit 70 shown in FIG. 7. The guide rail plate 71 connected to the connecting tube 61 as described above is straight as a whole as shown in FIG. A long groove 72 is formed at the center line position and is open at the protruding end side. Further, the protruding end portion is bent outward to form a stopper 73 against which a long insertion member lock nut 83 described later collides.

Reference numeral 81 denotes a long insertion member holder for holding the needle shaft base end cap 19, which is manually prolonged by a male screw projecting from the long insertion member holder 81 and crossing the long groove 72 of the guide rail plate 71. The insertion member lock nut 83 (a long insertion member fixing knob) is screwed.

The long insertion member holder 81 is fixed to the guide rail plate 71 by tightening the long insertion member lock nut 83, and the long insertion member holder 81 is loosened when the long insertion member lock nut 83 is loosened. Are movable along the long groove 72.

An outer tube holder 78 that holds the outer tube base end cap 29 is disposed below the elongated insertion member holder 81 (at a position closer to the connection fixing portion 60), and protrudes from the outer tube holder 78. Long groove 7 of guide rail plate 71
A manual mantle tube lock nut 79 (manure tube fixing knob) is screwed into a male screw that crosses the two.

Then, the mantle tube holder 78 is tightened by tightening the mantle tube lock nut 79 so that the guide rail plate 7 is moved.
When the mantle tube lock nut 79 is loosened, the mantle tube holder 78 becomes movable along the long groove 72.

Further, a guide tube holder 74 for holding the guide tube base end cap 39 is disposed below the outer tube holder 78 (at a position closer to the connection fixing portion 60), and protrudes from the guide tube holder 74. A manual guide tube lock nut 75 is screwed into a male screw that crosses the long groove 72 of the guide rail plate 71.

Then, the guide tube lock nut 75
The guide tube holder 74 is fixed to the guide rail plate 71 by tightening, and the guide tube holder 7 is loosened when the guide tube lock nut 75 is loosened.
4 is movable along the long groove 72.

In this operation, the needle shaft base end cap 19 held by the long insertion member holder 81, the outer tube base end cap 29 held by the outer tube holder 78, and the guide tube holder 74 are held. Each of the guide tube base caps 39 thus advanced and retracted on an extension of the axis of the treatment tool insertion cap 95 and the connecting cylinder 61.

In this manner, the needle shaft base end 19, the mantle tube base end 29, and the guide tube base end 39 are individually moved along the long groove 72 as shown by the arrow A, respectively. Position. However, the order of the positional relationship cannot be changed.

Therefore, at the time of use, first, the guide tube 30 is fixed at a position such that the distal end of the guide tube 30 comes out of the distal end of the endoscope insertion portion 92, and then the outer tube 20 is attached to the endoscope 90
Not only the operation of moving the needle shaft 10 forward and backward while fixing the needle tube 10 but also the operation of moving the mantle tube 20 forward and backward while fixing the needle shaft 10 to the endoscope 90 as necessary. By performing an operation of fixing both of them, the tissue in the body cavity can be easily and promptly collected.

FIG. 10 schematically shows an example in which the present invention is applied to an endoscope snare for resecting a polyp or the like.
An operation wire 110 provided with a snare loop 111 for binding a polyp at a distal end thereof is inserted into an outer tube 120 so as to be able to advance and retreat in an axial direction as a long insertion member. The guide tube 30 is not provided.

A connection terminal 100 for connecting a high-frequency power cord (not shown) to the operation wire 110.
Are provided in the long insertion member holder 81 portion.
Other configurations are the same as those of the first embodiment.

In addition, the present invention can be applied to various endoscope treatment tools such as endoscope grasping forceps.

[0035]

According to the present invention, the base end of the mantle tube and the base of the long insertion member are arranged along a guide rail plate which can be fixed and released freely with respect to the entrance of the treatment instrument insertion channel of the endoscope. Since the ends can be independently advanced and retracted and fixed, not only the operation to fix the mantle tube and advance and retreat the long insertion member, but also fix the long insertion member and advance and retreat the mantle tube as necessary By performing the operation of performing the operation for fixing both the mantle tube and the long insertion member, the endoscopic treatment can be easily and promptly performed.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an advancing / retreating operation unit of an operation unit of a tissue sampling tool for an endoscope according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of a distal end portion of the endoscope with the tissue sampling tool according to the first embodiment of the present invention set in the endoscope;

FIG. 3 is a cross-sectional view of a different state of a distal end portion of the endoscope with the tissue sampling tool according to the first embodiment of the present invention set in the endoscope.

FIG. 4 is a cross-sectional view showing the entire configuration of the needle shaft according to the first embodiment of the present invention.

FIG. 5 is a cross-sectional view showing the overall configuration of the mantle tube according to the first embodiment of the present invention.

FIG. 6 is a cross-sectional view showing the entire configuration of the guide tube according to the first embodiment of the present invention.

FIG. 7 is an external view showing an entire configuration of the endoscope with the tissue sampling tool for an endoscope according to the first embodiment of the present invention set in the endoscope.

FIG. 8 is a longitudinal sectional view of a connecting and fixing part of an operation part of the tissue sampling tool for an endoscope according to the first embodiment of the present invention.

FIG. 9 is a perspective view of a guide rail plate according to the first embodiment of the present invention.

FIG. 10 is a schematic view showing a state in which a snare for an endoscope according to a second embodiment of the present invention is set in the endoscope.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Needle shaft (long insertion member) 20 Mantle tube 50 Operation part 60 Connection fixing part 62 Connection mouthpiece 70 Advance / retreat operation part 71 Guide rail plate 72 Long groove 78 Mantle tube holder 79 Mantle tube lock nut (Sleeve tube fixing knob) 81 Long Insertion member holder 83 Long insertion member lock nut (Long insertion member fixed knob) 91 Treatment tool insertion channel 95 Treatment tool insertion base (entrance portion) 110 Operation wire (Long insertion member) 120 Outer tube

Claims (3)

[Claims] An outer tube inserted into a treatment tool insertion channel of an endoscope and advanced and retracted in an axial direction by operation from a proximal side, and an outer tube inserted and arranged in the outer tube and operated in an axial direction by operation from the proximal side. An endoscope treatment tool having a long insertion / removal member that advances / retreats, in an operation device for an endoscope treatment tool for performing an advance / retreat operation from a hand side, with respect to an entrance portion of a treatment instrument insertion channel of the endoscope. A guide rail plate which can be fixed and released freely, and an outer tube fixing knob which allows the base end of the outer tube to advance and retreat and to be fixed along the guide rail plate on an extension of the axis of the entrance portion of the treatment instrument insertion channel. The base portion of the long insertion member can be moved independently of the outer tube along the guide rail plate on the extension of the axis of the entrance portion of the treatment tool insertion channel, and can be freely fixed to the long insertion member. And An operating device for a treatment tool for an endoscope, wherein the operating device is provided. 2. A device for operating a treatment tool for an endoscope according to claim 1, further comprising a guide tube which can be inserted through the outer tube and is inserted into a treatment tool insertion channel of the endoscope. . 3. A guide tube fixing knob which is capable of advancing and retracting the base end of the guide tube along the guide rail plate on an extension of an axis of an entrance portion of the treatment instrument insertion channel along the guide rail plate. 3. The operating device for an endoscope treatment tool according to 2.