JP6917054B2 - A guide wire guiding means and a treatment tool for a basket-type endoscope device provided with the guide wire guiding means. - Google Patents

Description

The present invention is a guide wire guiding means and a guide to be attached to a basket-type endoscopic device treatment tool having a basket-type treatment portion that is inserted into the body cavity and is used for collecting and crushing foreign substances such as stones in the body cavity. The present invention relates to a treatment tool for a basket-type endoscope device provided with a wire guiding means.

Generally, in order to remove biliary calculus and the like, a basket-type endoscope device treatment tool that is inserted into an endoscope channel and protrudes from the tip of the endoscope to collect or crush a foreign substance is used. In this basket-type endoscope device treatment tool, a retractable basket-shaped basket portion provided at the tip of the operation wire is inserted into the flexible sheath together with the operation wire, and is connected to the rear end of the flexible sheath. By operating the operation part, the operation wire is pushed to project and expand the basket part from the tip of the flexible sheath, and stones, etc. are taken into the basket part, and the operation wire is pulled to contract the basket part, such as stones. Is to be grasped and crushed or recovered. Some treatment tools for this basket-type endoscope device use, for example, a guide wire for guiding the insertion of a flexible sheath into the bile duct in the papilla of the duodenum. The following Patent Documents 1 and 2 are examples of documents describing techniques relating to treatment tools for basket-type endoscope devices using such guide wires.

Patent Document 1 describes a flexible sheath in which a main lumen capable of exposing and retracting the distal end of the treatment tool body from the distal end side opening is formed therein, and a distal end portion of the flexible sheath. A fixed portion that is fixed and has a length of 3 to 30 mm, and a free portion that extends from the fixed portion to the proximal end side and is not fixed to the flexible sheath and can be separated from the flexible sheath. By providing a portion and a guide wire tube in which a guide wire lumen capable of exposing and pulling in the distal end of the guide wire from the distal end side opening is provided, the smooth operation of the treatment tool main body is not hindered. Moreover, a treatment tool for a basket-type endoscopy device that can realize a smooth position operation at the distal end is described.

Patent Document 2 describes a flexible sheath having a space inside which a guide wire can be inserted, an operating member which is inserted into the space inside the flexible sheath and can move forward and backward, and an operating member which is connected to the tip of the operating member to provide expandability. A basket portion composed of a plurality of gripping wires, a tip tip connected to the tip of the gripping wire and provided with a hole through which a guide wire can be inserted in the longitudinal direction, and a tip end fixed to the hand end of the operating member and fixed to the hand end of the sheath. A treatment tool for a basket-type endoscopic device including a rod member having a hole protruding from the operating portion and having a hole through which a guide wire can be inserted in the long axis direction is described.

Japanese Unexamined Patent Publication No. 2014-30492 Japanese Patent No. 2653686

The treatment tool for the basket-type endoscopic device described in Patent Document 1 described above uses a guide wire that allows a guide wire to penetrate the guide wire tube and is attached to the outer periphery of the tip side of the flexible sheath and protrudes from the guide wire tube. The flexible sheath is guided to the bile duct in the duodenal papilla, but the rigidity of the guide wire is low due to the use of a thin guide wire, and it is difficult to insert the guide wire into the bile duct in the papilla. There was a problem that there was.

The treatment tool for a basket-type endoscopic device described in Patent Document 2 has a hole for inserting a guide wire in the tip tips of a plurality of gripping wires constituting the basket portion, and thus has high rigidity. When using a thick guide wire for this purpose, it is necessary to make the tip tip larger than, for example, the sheath diameter in order to allow the thick guide wire and the bundled basket wire to penetrate into the tip tip, and the sheath is placed on the papilla of the bile duct. On the contrary, if the guide wire is made thinner and the tip tip is made smaller, the rigidity of the guide wire is low and the sheath cannot be guided.

In the treatment of the treatment tool for the basket-type endoscopic device using the guide wire, as shown in FIG. 4, the doctor pulls the operation wire and pulls the basket portion 4 at the tip into the inside to reduce the diameter. The flexible sheath 2 with the guide wire 9 protruding is positioned near the papilla 210 of the duodenum as shown in FIG. 4A, the guide wire 9 is inserted into the bile duct 22 in the papilla 210, and then FIG. 4 As shown in (b), the flexible sheath 2 is guided into the bile duct 22 while being guided by the guide wire 9, and the operation wire is pushed out with the tip moved above the calculus 230 to project the basket portion 4. After opening, as shown in FIG. 4C, the guide wire 9 is pulled into the flexible sheath 2, then the operation wire is pulled in to capture the calculus 230 in the gap of the basket portion 4, and the basket portion 4 is pulled into the flexible sheath. Further pull it into 2 to tighten and crush the calculus 230, or pull the basket part 4 at the tip of the calculus 230 to a position in contact with the flexible sheath 2, and pull the flexible sheath 2 in this state into the bile duct. 22 The calculus 230 is collected by pulling it out.

An object of the present invention is to solve such a problem by the prior art, and to provide a guide wire guiding means and the guide wire guiding means capable of easily inserting a highly rigid guide wire into the bile duct in the papilla. It is to provide a treatment tool for a basket-type endoscope device.

In order to achieve the above object, the present invention has a long cylindrical flexible sheath, an operation wire that is freely inserted into the cylinder of the flexible sheath, and a rear end of the end of the operation wire. coupled together to tip, tip Ri consists plurality of baskets wires formed to elastically reduced in diameter or expanded in a state of being coupled together at the distal end chip, the elastic restoring of the plurality of basket wires and a basket portion that will be configured to diameter or flared basket by the force, a guide wire guiding means for guiding the basket portion by the guide wire, is the guide wire guiding means, said distal tip outside diameter a root portion which forms winding a metal wire into a coil shape so as to be a smaller inner diameter, through the guide wire forms winding a metal wire into a coil shape so that the inner diameter through which the said guide wire from said root portion A guide portion for guiding the guide wire to the tip side, and an extension portion composed of a metal wire that elastically connects the base portion and the metal wire of the guide portion so that the guide wire can be inserted into the guide portion. wherein the distal tip is positioned distally from the base portion, the first feature that the distal end side of the plurality of baskets wires summarized by the distal tip is configured to penetrate the base portion.

Further, according to the first feature of the present invention, in the guide wire guiding means of the first feature, the metal wire is wound in a coil shape between the root portion and the extension portion, and the coil-shaped inner diameter for accommodating the tip is maintained. The second feature is that the portion is formed, and the third feature is that the coiled central axis of the root portion and the guide portion is coaxially formed in the guide wire guiding means of the first or second feature. In the guide wire guiding means of the first or second feature, the guide wire guiding means of the fourth feature is characterized in that the coiled central axes of the root portion and the guide portion are arranged side by side so as to be parallel to each other. The fifth feature of the means is that the coil-shaped longitudinal side surfaces of the root portion and the guide portion are arranged so as to be aligned with each other. The sixth feature is that a plurality of welded portions are formed by welding adjacent metal wires in the same shape.

Further, in the present invention, a long cylindrical flexible sheath, an operation wire that is freely inserted into the cylinder of the flexible sheath, and an end end are collectively connected to the rear end tip of the tip of the operation wire. is, tip Ri consists plurality of baskets wires formed to elastically reduced in diameter or expanded in a state of being coupled together at the distal end chip, the basket by an elastic restoring force of the plurality of basket wires a basket type endoscope apparatus for treatment instrument and a basket portion that will be configured to diameter or expanded to form winding a metal wire into a coil shape so that the small-inner-diameter than said distal tip outside diameter A guide portion for winding a metal wire in a coil shape so as to have an inner diameter through which the guide wire penetrates the root portion and guiding the guide wire from the root portion side to the tip side, and the guide wire. It is provided with an extension portion made of a metal wire that elastically connects the root portion and the metal wire of the guide portion so that the tip can be inserted into the guide portion, and the tip tip is located on the tip side of the root portion. the distal end side of the plurality of baskets wires summarized by the distal tip to a seventh aspect of in that a guide wire guiding means arranged so as to penetrate the base portion.

Further, in the treatment tool for the basket-type endoscope device of the seventh feature of the present invention, the guide wire guiding means winds the metal wire between the root portion and the extension portion in a coil shape, and the above-mentioned. The eighth feature is that a coiled inner diameter holding portion for accommodating the tip tip is formed, and in the treatment tool for the basket-type endoscope device of the seventh or eighth feature, the guide wire guiding means is the root. The ninth feature is that the coiled central axis of the portion and the guide portion are formed coaxially, and in the treatment tool for the basket-type endoscope device of the seventh or eighth feature, the guide wire guiding means is the root. The tenth feature is that the coiled central axes of the portion and the guide portion are arranged side by side so as to be parallel to each other. The eleventh feature is that the coil-shaped longitudinal side surfaces of the root portion and the guide portion are arranged side by side. means to form a plurality of welds with a welded coiled adjacent metal lines of the root portion and the guide portion and twelfth characteristic of the kite.

The treatment tool for a basket-type endoscope device provided with the guide wire guiding means and the guide wire guiding means according to the present invention has a root portion in which a metal wire is wound so as to have an inner diameter smaller than the outer diameter of the tip tip, and a guide wire. A guide portion for guiding the guide wire by winding a metal wire so as to have an inner diameter to be penetrated is connected to the root portion and the guide portion so that the guide wire can be inserted into the guide portion. The extension portion to be extended is formed of an elastic metal wire, the tip tip is located on the tip side of the root portion, and a guide wire guide is provided so that a plurality of basket wires connected by the tip tip penetrate the root portion. By constructing the means, a thick guide wire having high rigidity can be easily inserted into the bile duct in the papilla.

FIG. 5 is a diagram showing an overall configuration of a treatment tool for a basket-type endoscope device provided with a guide wire guiding means according to a first embodiment of the present invention. The figure for demonstrating the guide wire guide means according to Example 1 of this invention. The figure for demonstrating the guide wire guide means according to Examples 2 and 3 of this invention. The figure for demonstrating the guide wire guide means according to Examples 4 and 5 of this invention. The figure for demonstrating the problem of the treatment tool for a basket-type endoscope apparatus provided with the guide wire guiding means by this invention. The figure for demonstrating the guide wire guide means by another Example of this invention.

Hereinafter, a plurality of embodiments of the guide wire guiding means and the treatment tool for the basket-type endoscope device provided with the guide wire guiding means according to the present invention will be described in detail with reference to the drawings.

[Basic configuration]
First, as shown in FIG. 1, the overall configuration of the treatment tool for the basket-type endoscope device provided with the guide wire guiding means according to the first embodiment of the present invention is made of a coil such as a resin or a flat wire coil. The elongated flexible sheath 2 and the cylindrical tip metal fitting 20 made of a hard metal material attached to the tip end side of the flexible sheath 2 are freely inserted into the flexible sheath 2. The operation wire 3 includes a wire 3, an operation unit 10 attached to the rear end of the operation wire 3 for advancing / retreating the operation wire 3, and a plurality of basket wires 8 connected to the tip of the operation wire 3. A basket portion 4 for gripping or crushing a stone, which is a treatment portion that can be recessed from the inside of the flexible sheath 2 by the advance / retreat operation of A highly rigid (relatively thick) guide wire 9 and a guide wire guiding means 70 attached to the tip of the basket portion 4 for guiding the guide wire 9 in an arbitrary direction are provided.

The basket portion 4 is attached to a plurality of basket wires 8 which are a plurality of metal wires having elastic restoring force and the tip of the operation wire 3, and a rear end side (operation portion 10 side) of the plurality of basket wires 8 is attached. A rear end tip 7 that is integrally joined to the operation wire 3 and a tip 6 that is a portion that is integrally connected to the tip sides of a plurality of basket wires 8 are provided, and the front end tip 6 and the rear end tip 7 are provided. When the intervals are extended and stored in the flexible sheath 2, it forms a long shape, and when it is taken out from the flexible sheath 2, it becomes a basket shape by the elastic restoring force of a plurality of basket wires 8. It is configured to elastically shrink or expand. Further, in the present embodiment, the tip tip 6 is a portion formed into a spherical shape by heating the filler metal in which the tips of the plurality of basket wires 8 are gathered by welding or the like using the filler metal. It is not limited, and may be formed by using other parts such as inserting and joining a plurality of basket wire tips in a cylindrical metal product. In the present application, the portion in which the tip portions of the plurality of basket wires are combined is referred to as a tip tip.

The operation unit 10 penetrates the grip portion 14 attached to the rear end of the operation wire 3 via the operation pipe 12 and the operation pipe 12 of the grip portion 14 attached to the operation wire 3, and the water supply port 13 opens. The operation unit main body 11 is provided so as to move the operation wire 3 with respect to the flexible sheath 2 by moving the grip portion 14 forward and backward. The water supply port 13 is configured such that the inner end portion communicates with the in-cylinder space of the operation unit main body 11 and an injection or the like (not shown) can be attached to feed the chemical solution or the like into the flexible sheath 2.

In particular, as shown in FIG. 2, the guide wire guiding means 70 according to the present embodiment has a root portion 74 in which a metal wire is wound so as to have an inner diameter smaller than the diameter of the tip tip 6, and the tip side of the root portion 74 (FIG. A holding portion 73 for holding the tip tip 6 by winding a metal wire so as to have a diameter larger than the outer diameter of the tip tip 6 located on the left side) and the tip side of the holding portion 73 (left side in the figure). A guide portion 71 for guiding the guide wire 9 by winding a metal wire so as to have an inner diameter that allows the guide wire 9 to pass through the guide wire 9 and the holding portion 73 and the guide portion 71 are connected to each other to guide the guide wire. 9 is composed of an extension portion 72 extending so as to be inserted into the guide portion 71, and a metal wire is wound around the root portion 74, the holding portion 73, the extension portion 72, and the guide portion 71. It is composed of.

The root portion 74 and the holding portion 73 hold the tip tip 6 by extending from the tip tip 6 toward the operation portion side and expanding the plurality of basket wires 8 protruding from the root portion 74 by its own elastic restoring force. Since it is held in the portion 73, the tip 6 is prevented from falling off from the guide wire guiding means 70.

In the guide wire guiding means 70 according to this example, when the outer diameters of the tip tip 6 and the guide wire 9 are about 1 mm, the root portion 74 has an inner diameter of 0.85 mm, the length is 1.0 mm, and the holding portion 73 has an outer diameter of 1. .34 mm, length 20. mm, the guide portion 71 has an inner diameter of 1.8 mm and a length of 20. mm is suitable. The length of the guide portion 71 is preferably twice or more the diameter of the guide wire in order to guide the guide wire 9 in the direction in which the basket portion 4 extends.

The guide wire guiding means for the basket-type endoscope device treatment tool configured in this way includes the first step of forming the spherical tip 6 by joining the tips of the plurality of basket wires 8 by brazing welding or the like. The rear end of the plurality of basket wires 8 whose tips are connected by the first step is passed through the root portion 74 from the tip side of the guide portion 71, and the operation portion (drawing) until the tip tip 6 comes into contact with the tip of the root portion 74. The second step of projecting to the right side) side, and the third step of bending the basket wire 8 projected by the second step outward and fixing the bent basket wire 8 and the tip tip 6 by sandwiching the root portion 74. It can be assembled by doing and. Similarly, in the examples described later, spherical tip tips 6 are formed by brazing the tips of a plurality of basket wires 8 and the basket wires 8 are projected until the tip tips 6 come into contact with the root portion 74, and then the basket is used. The wire 8 is bent outward, and the bent basket wire 8 and the tip tip 6 are assembled by sandwiching and fixing the root portion 74, but the order is not limited to this manufacturing method.

As shown in FIG. 1, the treatment tool for the basket-type endoscopic device provided with the guide wire guiding means according to the present embodiment configured in this way has the base portion 74 and the holding portion 73 of the guide wire guiding means 70 as the basket portion. 4 The guide wire 9 is placed in the basket portion by being fixed to the tip tip 6 at the tip, the guide portion 71 penetrating the guide wire 9 inside and protruding, and the guide wire guiding means has a wound spring structure having an elastic restoring force. 4 can be guided in the extending direction, and a thick guide wire 9 having high rigidity can be easily inserted into the bile duct in the papilla.

[Other Examples]
The guide wire guiding means according to the first embodiment described above has a root portion 74 having an inner diameter smaller than the diameter of the tip tip 6, a holding portion 73 having a diameter larger than the outer diameter of the tip tip 6, and a guide portion 71 having an inner diameter penetrating the guide wire 9. Although the example configured from the above has been described, the guide wire guiding means according to the present invention is not limited to these structures, and may have other shapes, and other examples will be described below.

The guide wire guiding means according to the second embodiment also serves as an extension portion and a holding portion in the first embodiment, and is made of metal so as to have an inner diameter smaller than the diameter of the tip tip 6 as shown in FIG. 3A (a). To guide the guide wire 9 by winding a metal wire so as to be located on the root portion 74 on which the wire is wound and the tip side (left side in the drawing) of the root portion 74 and to have an inner diameter that allows the guide wire 9 to pass through. The guide portion 71 and the root portion 74 and the guide portion 71 are connected by bending a metal wire so that the guide wire 9 can be inserted into the guide portion 71 and an extension capable of accommodating the tip tip 6 inside. It is composed of a part 72 and is formed by winding one metal wire.

The guide wire guiding means according to the second embodiment also serves as the extension portion and the holding portion in the first embodiment, and the basket wire is in a state where the operation portion side of the tip tip 6 is abutted against the tip end side of the root portion 74 as shown in the figure. Since the 8 is expanded by its own elastic restoring force, the root portion 74 can prevent the tip tip 6 from coming off.

In particular, in this embodiment, since the holding portion is omitted and the extension portion 72 in which the metal wire is curved is formed between the root portion 74 and the guide portion 71, the number of wires is reduced and a space for inserting the guide wire 9 is provided. Since the guide wire can be expanded and the guide wire penetrates the inside of the guide portion 71 and protrudes in the same manner as in the first embodiment, the guide wire 9 is guided in the direction in which the basket portion 4 extends, and the thick guide wire 9 having high rigidity is inserted in the papilla. Can be easily inserted into the bile duct.

As shown in FIG. 3A (b), the guide wire guiding means according to the third embodiment extends the extension portion 72 in the first embodiment with respect to the central axis Z0 of the holding portion 73 and the root portion 74 with respect to the central axis Z1 of the guide portion 71. Is shifted in parallel, and the constituent parts are the same as those of the first embodiment shown in FIG. 1 except for the extension portion 72. In the examples after the third embodiment, the drawing of the tip tip 6 and the basket wire 8 is omitted.

The guide wire guiding means according to the third embodiment laterally crosses the central axis Z1 of the guide portion 71 that penetrates the guide wire 9 with respect to the central axis Z0 of the holding portion 73 and the root portion 74 that are coaxial with the central axis of the basket portion 4. By shifting in the direction, the guide wire 9 can be held parallel to the central axis of the basket portion 4, and since this shift amount La is, for example, about 2 mm, it does not interfere with the treatment. A thick guide wire 9 having high rigidity can be easily inserted into the bile duct in the papilla.

As shown in FIG. 3B (a), the guide wire guiding means according to the fourth embodiment also serves as the extension portion and the holding portion in the third embodiment, and is a metal wire having an inner diameter smaller than the diameter of the tip tip 6. The guide wire 9 is guided by winding a metal wire so as to have an inner diameter that allows the guide wire 9 to pass through the root portion 74 and the central axis Z0 of the root portion 74, which is shifted by a shift amount Lb. It is provided with a guide portion 71 for connecting and an extension portion 72 for connecting and extending the shifted root portion 74 and the guide portion 71 so that the central axes of the root portion 74 and the guide portion 71 are shifted. It was done.

The guide wire guiding means according to the fourth embodiment can hold the guide wire 9 parallel to the central axis of the basket portion 4 as in the third embodiment, and the shift amount Lb can be set to less than 2 mm, for example. Since it is possible, the thick guide wire 9 having high rigidity can be easily inserted into the bile duct in the nipple without obstructing the operation.

As shown in FIG. 3B (b), the guide wire guiding means according to the fifth embodiment has the root portion and the guide portion in the fourth embodiment arranged side by side so as to overlap the longitudinal positions of the tip tip 6. The root portion 74 in which a metal wire is wound so that the inner diameter is smaller than the diameter and the tip side are located at substantially the same position as the tip side (left side in the figure) of the root portion 74 so that the inner diameter penetrates the guide wire 9. A guide portion 71 for winding a metal wire around the guide wire 9 to guide the guide wire 9 and an extension portion 72 for connecting and extending the root portion 74 and the guide portion 71 are provided.

The guide wire guiding means according to the fifth embodiment further narrows the shift amount Lc in addition to the other effect that the guide wire 9 can be held parallel to the central axis of the basket portion 4 as in the third embodiment. Since the root portion 74 and the guide portion 71 are arranged side by side in the horizontal position, the straightness of the guide wire can be improved against the elastic force of the guide wire 9 when the guide wire 9 is passed through the guide portion 71. Can be done. The juxtaposed portion of the root portion 74 and the guide portion 71 may be welded. Further, the right end portion of the guide portion 71 may be projected to the right end portion of the guide wire root portion 74 within a range that does not interfere when the basket 8 is expanded.

The configuration of the guide wire guide means according to the present invention is not limited to that in each of the above-described embodiments, and includes a guide wire guide means configured by a winding spring structure having an elastic restoring force, and further, a guide portion. The direction of is not limited to the same as or parallel to the central axis of the root portion, and may be changed by a predetermined angle in order to facilitate the insertion of the guide wire or to regulate the direction of the guide wire.

Further, in the guide wire guiding means according to the above-described embodiment, the root portion 74, the holding portion 73, and the guide portion 71 are formed in a coil shape in which a metal wire is wound. )-(C), for example, a laser-welded welded portion 77 may be formed on these coil-shaped adjacent metal wires to improve the strength of the coil structure. On the outer circumference of the coil as seen from the axial direction of the cylinder, at least two locations may be formed at the target positions, or a plurality of locations may be formed at equal angles, and the welding method is not limited to laser welding.

2 Flexible sheath, 3 Operation wire, 4 Basket part, 6 Tip tip,
7 Rear Tip, 8 Basket Wire, 9 Guide Wire, 10 Operation Unit,
11 Operation unit body, 12 Operation pipe, 13 Water supply port, 14 Grip unit, 20 Tip bracket,
22 Bile duct, 23 Calculus, 70 Guide wire guide means, 71 Guide, 72 Extension,
73 Retaining part, 74 Root part, 77 Welding part, Nipple, 230 Stone

Claims (12)

A long cylindrical flexible sheath, an operation wire that is freely inserted into the cylinder of the flexible sheath, and an end end are collectively connected to the rear end tip of the tip of the operation wire, and the tip is a tip click. Ri from a plurality of baskets wires formed to elastically reduced in diameter or expanded in a state of being coupled together to flop formed, reduced in diameter or flared basket by an elastic restoring force of the plurality of basket wires and a basket portion that will be configured, a guide wire guiding means basket type endoscope apparatus treatment instrument for guiding the basket portion by a guide wire,
The guide wire guiding means, wherein a root portion of the metal wire so that the small-inner-diameter and form wound into a coil from the distal tip outer diameter, winding a metal wire such that the inner diameter of the coiled through which the said guide wire A guide portion for guiding the guide wire from the root portion side to the tip side, and a metal wire between the root portion and the guide portion so as to leave a space so that the guide wire can be inserted into the guide portion. Equipped with an extension made of metal wires that connect with elastic force
The distal tip is positioned distally from the base portion, constituting the guide wire guiding means so that the tip side of a plurality of baskets wires summarized by the tip penetrates the base portion. The guide wire guiding means according to claim 1, wherein the metal wire is wound in a coil shape between the root portion and the extension portion to form a holding portion having a coiled inner diameter for accommodating the tip. The guide wire guiding means according to claim 1 or 2, wherein the coiled central axis of the root portion and the guide portion is coaxially formed. The guide wire guiding means according to claim 1 or 2, wherein the coiled central axes of the root portion and the guide portion are arranged side by side so as to be parallel to each other. The guide wire guiding means according to claim 4, wherein the coil-shaped longitudinal side surfaces of the root portion and the guide portion are arranged so as to line up. The guide wire guiding means according to any one of claims 1 to 5, wherein a plurality of welded portions are formed by welding coiled adjacent metal wires of the root portion and the guide portion. A long cylindrical flexible sheath, an operation wire that is freely inserted into the cylinder of the flexible sheath, and an end end are collectively connected to the rear end tip of the tip of the operation wire, and the tip is a tip click. Ri from a plurality of baskets wires formed to elastically reduced in diameter or expanded in a state of being coupled together to flop formed, reduced in diameter or flared basket by an elastic restoring force of the plurality of basket wires a basket portion that will be configured, a basket-type endoscope apparatus treatment tool comprising,
Wherein a root portion which forms winding a metal wire such that a small inner diameter than said distal tip outside diameter coiled, a winding form with a guide wire metal wire into a coil shape so that the inner diameter through which the said guide wire A metal wire that elastically connects the guide portion for guiding from the root portion side to the tip side and the metal wire of the root portion and the guide portion so that the guide wire can be inserted into the guide portion. and a extension consisting of the distal tip is positioned distally from the base portion, the arrangement guidewire guide means so that the tip side of a plurality of baskets wires summarized by the tip penetrates the base portion A treatment tool for a basket-type endoscopic device provided. The basket according to claim 7, wherein the guide wire guiding means winds the metal wire in a coil shape between the root portion and the extension portion to form a holding portion having a coiled inner diameter for accommodating the tip. Treatment tool for type endoscope devices. The treatment tool for a basket-type endoscope device according to claim 7 or 8, wherein the guide wire guiding means coaxially forms the coiled central axis of the root portion and the guide portion. The treatment tool for a basket-type endoscope device according to claim 7 or 8, wherein the guide wire guiding means is arranged side by side so that the coiled central axis of the root portion and the guide portion are parallel to each other. The treatment tool for a basket-type endoscope device according to claim 10, wherein the guide wire guiding means is arranged so that the coil-shaped longitudinal side surfaces of the root portion and the guide portion are arranged side by side. The guide wire guiding means, basket-type endoscope apparatus according to any one of the root portion and the guide portion from請Motomeko 7 a metal wire to form a plurality of weld and welding the coiled adjacent 11 Treatment tool.

Images