JPH05211994A - Treatment jig for endoscope - Google Patents

Abstract

PURPOSE:To clear a tight binding degree on the side of a hand operation part when the tissue of a polyp is tightly bound by the treatment part of a snair wire without being affected by irregularity at every product. CONSTITUTION:In a treatment jig for an endoscope consisting of a sheath 2, the operation part 3 provided to the base end part of the sheath 2, the operation wire 3 inserted in the sheath 2 from the operation part 3 having a snare wire 5 freely protruding and receding from the leading end 2a of the sheath at its leading end part and the slider 8 provided to the operation part 3 and operating the operation wire 4 so as to advance and retract the same, graduations 11 are provided to the operation part 3 and the index 12 movable in the graduation direction is provided to the slider 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a treatment instrument for an endoscope having a treatment portion such as a high-frequency snare or grasping forceps used transendoscopically.

[0002]

2. Description of the Related Art A treatment instrument for an endoscope such as a high-frequency snare which is inserted endoscopically into a body cavity through an insertion channel of the endoscope is disclosed in, for example, Japanese Utility Model Laid-Open No. 2-63802. It is known from No. 330571.

These treatment instruments for endoscopes are a sheath, an operating portion provided at the proximal end portion of the sheath, and a treatment portion which is inserted into the sheath through the operating portion and which can be inserted and retracted from the distal end of the sheath to the distal end of the sheath. The operating wire having the snare wire and the slider which is provided in the operating portion and which moves the operating wire forward and backward.

When the snare wire projects from the distal end of the sheath, it forms a loop that expands due to its own elastic restoring force. The snare wire is hooked on the polyp, then the operating wire is pulled, and the snare wire is pulled into the sheath from the distal end of the sheath. After the polyps are bound tightly, the snare wire can be cut by applying a high-frequency current.

Further, there is also one in which a scale is provided on the operation portion so that the operator who operates the endoscopic treatment tool can grasp the protruding length from the tip of the sheath of the snare wire so that the amount of movement of the slider can be known. is there.

[0006]

However, since the treatment instrument for an endoscope is inserted into the body cavity transendoscopically through the insertion channel of the endoscope, the polyp on the hand operation portion side can be changed. I don't know if I'm tied up. For this reason, as shown in FIG. 4, the polyp A may be pulled too much into the sheath b together with the snare wire a, and the polyp A may be torn off, which may cause a blood vessel in the polyp A to be severed and cause major bleeding.

Further, a scale provided on the operating portion so that the movement amount of the slider can be recognized can solve the above-mentioned problems to some extent, but the length of the operating wire including the sheath and the snare wire varies depending on the product. Therefore, it is necessary to remember the amount of protrusion of the snare wire with respect to the amount of movement of the slider before use.

The present invention has been made by paying attention to the above-mentioned circumstances, and the purpose thereof is not to be influenced by the variation of each product, and when a tissue such as a polyp is tightly bound by a treatment portion such as a snare wire, It is an object of the present invention to provide a treatment tool for an endoscope, which allows the operator to know the degree of tight binding on the side of the operating section, and which can accurately treat the target site.

[0009]

In order to achieve the above object, the present invention provides a sheath, an operating portion provided at a proximal end portion of the sheath, and a distal end portion inserted from the operating portion into the sheath. In an endoscopic treatment tool comprising an operation wire having a treatment section capable of projecting and retracting from the distal end of a sheath, and a slider provided in the operation section for advancing and retracting the operation wire, a scale is provided on the operation section, and The slider is provided with an index that can be moved in the scale direction.

[0010]

Before use, the index is moved at a position where the tip of the sheath and the tip of the treatment portion are aligned with each other to align with the desired scale line of the scale. Next, the sheath is inserted into the body cavity through the insertion channel of the endoscope, the slider is operated to advance the operation wire, and the treatment portion is projected from the distal end of the sheath to be hooked on the polyp. Next, operate the slider to retract the operating wire until the indicator reaches the position of the scale line that was initially set,
The treatment part is retracted from the tip of the sheath to bind the polyp tightly.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows the entire high frequency snare 1 as a treatment tool for an endoscope. Reference numeral 2 is a sheath made of a flexible tube, and the operation portion 3 is detachably connected to the base end portion. A conductive operation wire 4 is inserted into the sheath 2 from the operation portion 3 side so as to be able to move forward and backward, and a snare wire 5 as a treatment portion formed by bending the conductive wire into a loop shape at the distal end portion of the operation wire 4. Are fixed by the connecting pipe 6.

When the snare wire 5 protrudes from the sheath tip 2a, it expands into a loop due to its elastic restoring force, and is retracted from the sheath tip 2a into the sheath 2 to be narrowed as shown in FIG. ing.

The operation section 3 is composed of an operation section body 7 and a slider 8 which is movable with respect to the operation section body 7. A finger hook portion 9 is provided at the base end of the operation portion main body 7, and the slider 8 is detachably connected to the operation wire 4 via an operation pipe 10.

Further, the operating portion main body 7 is provided with a scale 11 having a scale line 11a extending in the moving direction of the slider 8, and the slider 8 is provided with an index 12. The index 12 is formed by providing a rectangular plate 13 with an elongated hole 14 along the longitudinal direction thereof, and is attached by screwing a fixing screw 15 inserted into the elongated hole 14 into the slider 8. Therefore, index 12
Can move in the direction of the scale 11 within the range of the long hole 14,
By tightening the fixing screw 15 with the index 12 aligned with the desired scale line 11a, it can be fixed to the slider 8.

Next, the operation of the high frequency snare 1 configured as described above will be described. Before insertion into the insertion channel of the endoscope (not shown), the slider 8 is moved forward and backward to align the tip of the snare wire 5 with the sheath tip 2a as shown in FIG. To the slider 8 by moving the index 12 to the desired scale line 11a and tightening the fixing screw 15.

After inserting the insertion portion of the endoscope into the body cavity, the sheath 2 of the high-frequency snare 1 is inserted into the insertion channel. At this time, the slider 8 is fully pulled toward the hand side, and the snare wire 5 is inserted into the sheath 2 in a state of being fully retracted.

Under the observation of the endoscope, the insertion portion of the endoscope is operated to guide the distal end portion of the high-frequency snare 1, that is, the sheath distal end 2a to the vicinity of the polyp A. Next, when the slider 8 is moved forward to project the snare wire 5 from the sheath tip 2a via the operation wire 4, the slider 8 expands in a loop by its elastic restoring force.

Thereafter, as shown in FIG. 3A, the snare wire 5 is hooked on the polyp A by combining the operation of the endoscope and the advancing / retreating operation of the high-frequency snare 1, and the slider 8 is pulled toward the hand side. At this time, the operator looks at the scale 11 provided on the operation section main body 7 and pulls the slider 8 until the index 12 coincides with the scale line 11a initially aligned, and as shown in FIG. , The snare wire 5 is drawn inside the sheath 2, and the polyp A is bound by the snare wire 5.
In this state, snare wire 5
Then, a high frequency is supplied to the polyp A to burn it off at the binding part.

By thus pulling the slider 8 to the position where the index 12 points to the scale line 11a which is initially aligned,
Even if there is variation in each product, it is not affected, the amount of binding is known, it is possible to prevent the snare wire 5 from being pulled in too much as shown in FIG. 4, and there is no risk of tearing the polyp A by the snare wire 5. In addition, in the said one Example, although the high frequency snare which has a snare wire was demonstrated,
It can also be applied to a treatment tool for an endoscope having a treatment section such as grasping forceps.

[0021]

As described above, according to the present invention, when a tissue such as a polyp is tightly bound by a treatment portion such as a snare wire without being influenced by variations in products, the degree of tightness at the hand operation portion side. There is an effect that the user understands and can treat the target site accurately.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a high frequency snare according to an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional side view showing a state in which a snare wire is drawn into the sheath of the same embodiment.

3A and 3B are views for explaining the operation of the embodiment.

FIG. 4 is a view for explaining a state in which a snare wire is pulled too far into a sheath.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... High frequency snare, 2 ... Sheath, 3 ... Operation part, 4 ... Operation wire, 5 ... Snare wire, 8 ... Slider, 11 ... Scale, 12 ... Index.

Claims (1)

[Claims] 1. A sheath, an operation portion provided at a proximal end portion of the sheath, an operation wire having a treatment portion inserted into the sheath from the operation portion and having a distal end portion capable of projecting and retracting from a sheath tip, and An endoscopic treatment instrument comprising a slider provided on an operation section for moving the operation wire forward and backward, comprising a scale provided on the operation section and an index provided on the slider and movable in the scale direction. A treatment tool for an endoscope, which is characterized in that