JPH105233A - Processor for endoscope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a processor to enable easy and enough cleaning of an operation part of an endscope. SOLUTION: Between a 1st finger loop 12 connected to an operation wire 33 and an operation part main body 10 connected to an outer pipe 31, a connecting member 1 is connected deviated from the axis of the operation wire 33. A second finger loop 24 is connected to a flexible pipe 32, which is located between an operation wire 33 and an outer pipe 31, slidably along the connecting member 1.

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 through a treatment tool insertion channel of an endoscope.

[0002]

2. Description of the Related Art For example, the most basic configuration of a treatment tool for an endoscope, such as a foreign matter collection tool, is such that the distal end of an operation wire inserted in a flexible tube so as to be able to advance and retreat in the axial direction is attached to its own end. A gripping member that opens to the side by elasticity is attached, and by performing an operation of relatively moving the operation wire and the flexible tube in the axial direction, the gripping member moves in and out of the distal end portion of the flexible tube. Thus, the gripping member is opened and closed.

[0003] In addition, the tube has a double structure, and an outer tube that does not move with respect to the operation wire is disposed outside the flexible tube. When the gripping member is opened and closed, the intermediate flexible tube moves and the gripping member moves forward and backward. Some have not moved (actually 2-39
No. 445).

[0004] In such a conventional treatment device for an endoscope, a flexible tube and an operation wire arranged coaxially are connected to a central axis position of an operation section surrounded by the circumference.

[0005]

However, if the flexible tube and the operation wire are connected to the center axis position of the operation part surrounded by the surroundings as described above, dirt and the like penetrating into the gap around the axis position may be removed. Since it is difficult to wash after use, there may be a problem in hygiene.

Accordingly, an object of the present invention is to provide a treatment tool for an endoscope that can easily and sufficiently clean an operation section.

[0007]

In order to achieve the above object, a treatment tool for an endoscope according to the present invention has a treatment member attached to a distal end of an operation wire inserted in a flexible tube so as to be able to advance and retreat in an axial direction. Remotely move the treatment member by moving the first finger hook connected to the proximal end of the operation wire relative to the second finger hook connected to the proximal end of the flexible tube in the axial direction. In an endoscope treatment tool that is operated manually,
A flexible mantle tube is arranged outside the tube coaxially with the flexible tube, and its proximal end is connected to the operation unit main body. The space between the first finger hook and the operation unit main body is It is characterized in that the operation wires are connected by a connection member that is displaced in one direction from the axis position of the operation wire, and the second finger hook slides along the connection member.

The connecting member may be detachably attached to at least one of the first finger rest and the operation portion main body, and a connection between the operation wire and the first finger rest may be provided. May be releasable.

[0009] The treatment member may be a gripping member urged to open laterally by its own elasticity.

[0010]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows the entire configuration of an endoscope foreign matter collection tool. The outermost layer of an insertion portion 30 that is passed through a treatment tool insertion channel of an endoscope (not shown) is made of, for example, tetrafluoroethylene. It is a mantle tube 31 formed by a flexible tube.

Inside the mantle tube 31, the outside diameter is the mantle tube 31.
An inner tube 32 made of a flexible tube smaller than the inner diameter of the outer tube 31 is arranged coaxially with the outer tube 31 so as to be movable in the axial direction relatively to the outer tube 31.

A flexible operation wire 33 is disposed at an axial position in the inner tube 32 so as to be able to advance and retreat in the axial direction. The base ends of the pair of gripping members 5 are connected and fixed to the distal end of the operation wire 33 via the connection pipe 6. Hereinafter, the side with the gripping member 5 is referred to as the distal end side, and the opposite side is referred to as the hand side.

The gripping member 5 is made of a material having a spring property, for example, stainless steel for a spring. As shown in FIG. Is biased towards.

The proximal end of the mantle tube 31 is connected to the operation unit main body 1.
It is pressed down and fixed to the operation section main body 10 by a fixing nut 2 screwed to zero. And the operation unit body 10
, One connecting rod 1 is protruded straight toward the hand side in parallel with the inner tube 32.

The connecting rod 1 has a distal end fitted into a hole formed in the operation section main body 10, and a screw formed at the distal end thereof is screwed and fixed to the operation section main body 10. A thumb hook 12 for engaging the first finger of the operator is attached to the proximal end of the connecting rod 1.

The proximal end of the connecting rod 1 is fitted into a hole formed in the thumb hook 12, and the thumb hook 12 is inserted from the side thereof.
It is fixed to the thumb rest 12 (first finger rest) by a fixing screw 13 screwed into the bracket. A circumferential groove is formed in the connecting rod 1 at a portion where the tip of the fixing screw 13 abuts so that the two parts do not separate even if the fixing screw 13 is slightly loosened.

Thus, the thumb hook 12 is connected to the connecting rod 1.
Thus, when the fixing screw 13 is loosened, the connection state is released. It is also possible to unscrew the distal end of the connecting rod 1 from the operating section main body 10.

The proximal end portion of the operation wire 33 extends from the inside of the inner tube 32 and is connected to the operation portion main body 10 and the thumb rest 1.
2, a portion of the retaining tube 3 which is disposed straight and parallel to the connecting rod 1 and is fixed to an end thereof is fixed by being embedded in a thumb hook 12.

The buckling prevention pipe 7 made of stainless steel is covered with the operation wire 33 up to the inside of the inner tube 32. With such a structure, the mantle tube 31 connected to the operation unit main body 10 and the operation wire 33 connected to the thumb rest 12 do not relatively move.

Although there is a space between the operation unit main body 10 and the thumb rest 12, a slider 20 slidable forward and backward within a certain range along the connecting rod 1 is disposed in the space.

A portion between a pair of flanges 23 projecting from the outer peripheral surface of the slider 20 at an interval forms a finger hook 24 for engaging the second and third fingers of the operator's hand. (Second finger hook).

The slider 20 has two through holes formed in the axial direction of the operation wire 33 and the like. The operation wire 33 is loosely inserted into one of the through holes, and the connecting rod 1 is slidably inserted into the other. Has been passed.

The proximal end of the inner tube 32 is connected and fixedly connected to the slider 20. Reference numeral 4 denotes a holding tube for holding the end of the inner tube 32 so as not to spread.

With such a structure, the inner tube 32 can be moved in the axial direction relative to the outer tube 31 and the operation wire 33 together with the slider 20 (and thus with the finger rest 24).

The distal end of the inner tube 32 is located near the distal end of the outer tube 31, and as shown in FIG.
In a state where the slider 20 is moved closer to the hand with respect to 0, the distal end of the inner tube 32 is retracted into the distal end of the outer tube 31, and as shown in FIG. Is moved to the front side, the tip of the inner tube 32 projects from the tip of the outer tube 31.

FIGS. 3 and 4 show a state in which the operator puts his / her finger on the thumb rest 12 and the finger rest 24 of the operation part. As shown in FIGS. 2 and 4, when the finger rest 24 is operated in a direction away from the thumb rest 12, the distal end portion of the inner tube 32 projects from the distal end of the outer tube 31, and presses the gripping member 5 from the rear outside. And let it close.

Then, as shown in FIGS. 1 and 3,
When the finger hook 24 is operated in a direction approaching the thumb hook 12, the distal end portion of the inner tube 32 is retracted into the distal end of the outer tube 31, and the front side of the gripping member 5 is opened by its own elasticity.

In the thus configured endoscope foreign matter collecting device, the operation unit main body 10 and the thumb rest 12 are laterally shifted from the operation wire 33 and arranged in parallel with the operation wire 33. Since it is connected by the connecting rod 1 and does not surround the operation wire 33, it is possible to relatively easily clean the periphery of the operation wire 33 after use.

Then, the connection between the connecting rod 1 and the thumb rest 12 is released by loosening the fixing screw 13, and the thumb rest 12 is pulled toward the hand side, and the operation wire 33 having the gripping member 5 at the tip is connected to the inner tube 32. It can be pulled out from inside to the hand side.

By doing so, the extracted operation wire 33 and the like can be sufficiently washed, and the slider 20 can be further pulled toward the operation section main body 10 from the inside of the outer tube 31 to the inner tube 32. And each part can be sufficiently washed.

The cleaning liquid can be injected into the inner tube 32 from the slider 20 side, and the injection port base 21 is formed in a tapered shape. Similarly, the operation wire 33
A cleaning liquid can be injected into the inside from the operation unit main body 10 side.

In the case where the gripping member 5 is so large that it cannot pass through the inner tube 32, for example, as shown in FIG.
Without attaching the retaining tube 7 to the proximal end of the operation wire 33, the operation wire 33 is fixed to the thumb hook 12 by the fixing screw 14.

With such a configuration, the connection between the operation wire 33 and the thumb hook 12 is released by loosening the fixing screw 14, so that the gripping member 5 is pulled forward, so that the inside of the inner tube 32 is moved forward. Operation wire 3
3 can be extracted.

The present invention is not limited to the above-described embodiment. For example, the gripping member 5 may have any shape, and the open state is shown in FIG. 6 and the closed state is shown in FIG. It may be a three-wire type or another shape as shown in FIG.

In contrast to the above embodiment, the operation wire 3
3 and the mantle tube 31 are connected to the slider 20, and the inner tube 32
May be connected to the thumb rest 12. Further, the present invention may be applied to an endoscope treatment tool other than the foreign matter collection tool, and may be applied not only to medical use but also to industrial use.

[0036]

According to the present invention, the position between the first finger hook connected to the operation wire and the operation portion main body connected to the mantle tube is displaced in one direction from the axial position of the operation wire. The second finger hook connected by the connecting rod and connected to the flexible tube positioned between the operation wire and the mantle tube slides along the connection member, so that the operation portion is rotated around the operation wire. Since an open space is formed in the operating section, the operating section can be easily cleaned after use. Then, by making the connection between the connecting member and the first finger hook or the operation unit main body freely releasable, the operation wire, the flexible tube, and the mantle tube can be separated, and they can be sufficiently washed individually. .

[Brief description of the drawings]

FIG. 1 is a side cross-sectional view of an open state of an embodiment of an endoscope foreign matter recovery tool to which the present invention is applied.

FIG. 2 is a side sectional view of a closed state of the embodiment of the endoscope foreign matter recovery tool to which the present invention is applied.

FIG. 3 is a side view of the embodiment of the endoscope foreign matter recovery tool to which the present invention is applied, which is being operated in an open state.

FIG. 4 is a side view of the embodiment of the endoscope foreign matter recovery tool to which the present invention is applied, which is being operated in a closed state.

FIG. 5 is a side sectional view of a connection portion between an operation wire and a thumb hook according to another embodiment of the endoscope foreign matter recovery tool to which the present invention is applied.

FIG. 6 is a perspective view of another embodiment of an endoscope foreign matter recovery tool to which the present invention is applied, with a distal end portion in an open state.

FIG. 7 is a perspective view of a distal end portion of another embodiment of an endoscope foreign matter recovery tool to which the present invention is applied, in a closed state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Connecting rod 5 Grasping member 10 Operation part main body 12 Thumb rest 13 Fixing screw 20 Slider 24 Finger rest 31 Mantle tube 32 Inner tube 33 Operation wire

Claims (4)

[Claims] A treatment member is attached to a distal end of an operation wire inserted in a flexible tube so as to be able to advance and retreat in an axial direction, and a first finger hook connected to a proximal end of the operation wire is attached to a proximal end of the flexible tube. A treatment tool for an endoscope which is moved in the axial direction relative to a second finger rest connected to the endoscope to remotely operate the treatment member; A flexible mantle tube is arranged on the outside and its base end is connected to the operation portion main body, and a direction between the first finger hook and the operation portion main body is set in one direction from an axial position of the operation wire. An endoscope treatment tool, wherein the second finger hook is slid along the connecting member by a connecting member that is displaced from the endoscope. 2. The endoscope treatment tool according to claim 1, wherein the connecting member is detachably attached to at least one of the first finger rest and the operation portion main body. 3. The treatment tool for an endoscope according to claim 1, wherein the connection between the operation wire and the first finger rest is releasable. 4. The treatment member according to claim 1, wherein the treatment member is a grip member urged to open laterally by its own elasticity.
Or the treatment tool for endoscopes according to 3.