JP2018191986A - Guide wire guiding means and treatment instrument for basket-type endoscopic device with the same - Google Patents

Abstract

To provide guide wire guiding means that can easily insert the highly rigid guide wire into a bile duct in the papilla, and provide a treatment instrument for a basket-type endoscopic device.SOLUTION: Guide wire guiding means is configured by: forming a proximal end 74 being an inner diameter smaller than an outer diameter of a distal tip 6, a guide part 71 for guiding guide wire 9 by making it penetrate, and an extension part 72 for connecting the proximal end 74 with the guide part 71 and extended to empty an interval capable of inserting the guide wire 9 into the guide part 71, by one metal wire having elastic force; positioning the distal tip 6 in the tip side from the proximal end 74; and making multiple basket wire 8 connected by the distal tip 6 penetrate through the proximal end 74.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a guide wire guide means which is inserted into a treatment tool for a basket type endoscope apparatus having a basket type treatment part which is inserted into a body cavity and used for collecting and crushing foreign substances such as stones in the body cavity. The present invention relates to a treatment instrument for a basket type endoscope apparatus provided with a wire guiding means.

  In general, in order to remove a bile duct stone or the like, a treatment tool for a basket type endoscope device is used which is inserted into an endoscope channel and protrudes from the distal end of the endoscope to collect or crush foreign matter. This treatment tool for a basket type endoscope apparatus is connected to the rear end of a flexible sheath by inserting a retractable basket-like basket portion provided at the tip of the operation wire into the flexible sheath together with the operation wire. When the operation wire is pushed, the operation wire is pushed and the basket portion protrudes and expands from the distal end of the flexible sheath, and a calculus or the like is taken into the basket portion, and the operation wire is pulled to contract the basket portion to produce a calculus or the like. Is held and crushed or collected. For example, this basket-type endoscopic apparatus treatment tool uses a guide wire for guiding insertion of a flexible sheath into the bile duct in the papilla of the duodenum. The following Patent Documents 1 and 2 are cited as documents that describe techniques related to the treatment tool for a basket-type endoscope apparatus using such a guide wire.

  Patent Document 1 discloses 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, and a distal end portion of the flexible sheath. A fixed part that is fixed and has a length of 3 to 30 mm, and a free part that extends from the fixed part to the proximal end side and is not fixed to the flexible sheath and can be separated from the flexible sheath And a guide wire tube in which a guide wire lumen capable of exposing and retracting the distal end of the guide wire from the distal end side opening is formed, and does not hinder the smooth operation of the treatment instrument body, A treatment instrument for a basket-type endoscope apparatus that can realize a smooth position operation of the distal end is described.

  Patent Document 2 discloses a flexible sheath having a space in which a guide wire can be inserted therein, an operation member that is inserted into the space in the flexible sheath and is freely movable back and forth, and is connected to the distal end of the operation member and has an open and expandability. A basket portion comprising a plurality of gripping wires, a distal tip connected to the distal end of the gripping wire and provided with a hole through which a guide wire can be inserted in the longitudinal direction, and fixed to the proximal end of the operation member and secured to the proximal end of the sheath There is described a treatment tool for a basket-type endoscope apparatus that includes a rod member that protrudes from the operated portion and is provided with a hole through which a guide wire can be inserted in the long axis direction.

JP 2014-30492 A Japanese Patent No. 2653686

  The treatment instrument for a basket type endoscope apparatus described in Patent Document 1 described above uses a guide wire protruding from the guide wire tube by attaching a guide wire tube penetrating the guide wire to the outer periphery on the distal end side of the flexible sheath. The flexible sheath is guided to the bile duct in the papilla of the duodenum, but because the guide wire is thin, the guide wire has low rigidity and it is difficult to insert the guide wire into the bile duct in the papilla. There was a problem that there was.

  Since the treatment tool for a basket type endoscope apparatus described in Patent Document 2 is provided with a hole through which a guide wire can be inserted into the tip of a plurality of gripping wire tips constituting the basket portion, it has high rigidity. When a thick guide wire is used, the distal tip needs to be larger than the sheath diameter, for example, in order to penetrate the thick guide wire and the collected basket wire into the distal tip. In contrast, if the guide wire is made thin and the tip is made smaller, the rigidity of the guide wire is low and the sheath cannot be guided.

  In addition, as shown in FIG. 4, the treatment of the treatment device for the basket type endoscope apparatus using the guide wire is performed by a doctor pulling the operation wire and pulling the basket portion 4 at the tip portion into the inside to reduce the diameter. The flexible sheath 2 with the guide wire 9 protruding is positioned in the vicinity of the duodenal papilla 210 as shown in FIG. 4A, and the guide wire 9 is inserted into the bile duct 22 in the papilla 210, and then FIG. As shown in (b), the flexible sheath 2 is inserted into the bile duct 22 while being guided by the guide wire 9 and the operation wire is pushed out in a state where the tip is moved to a position higher than the calculus 230 to project the basket portion 4. Next, as shown in FIG. 4 (c), the guide wire 9 is drawn into the flexible sheath 2, and then the operation wire is drawn to capture the calculus 230 in the gap of the basket portion 4, and the basket portion 4 is moved to the flexible sheath. 2 Then, the calculus 230 is tightened and crushed, or the basket portion 4 at the tip of the state where the calculus 230 is captured is pulled to a position in contact with the flexible sheath 2, and the flexible sheath 2 in this state is removed from the bile duct 22. The calculus 230 is collected by pulling it out.

  An object of the present invention is to solve the above-described problems of the prior art, and includes a guide wire guiding means capable of easily inserting a rigid guide wire into the bile duct in the nipple and the guide wire guiding means. Another object of the present invention is to provide a treatment tool for a basket type endoscope apparatus.

To achieve the above object, the present invention provides a flexible sheath having a long cylindrical shape, an operation wire inserted into the cylinder of the flexible sheath so as to freely advance and retract, and a terminal end of the distal end of the operation wire And a basket portion composed of a plurality of basket wires formed so as to elastically shrink or expand in a state where the tip is connected as a tip tip, and the basket is guided by the guide wire. A guide wire guide means for a type endoscope apparatus treatment tool,
The guide wire guiding means has a base portion wound with a metal wire so that the inner diameter is smaller than the outer diameter of the tip of the tip, and a guide wire by winding the metal wire so as to have an inner diameter penetrating the guide wire. A metal part having elasticity is wound around a guide part for guiding, and an extension part that connects the base part and the guide part and extends so as to leave a space where the guide wire can be inserted into the guide part. The first feature is that the tip is positioned on the tip side from the base and a plurality of basket wires connected by the tip are penetrated through the base.

  In the guide wire guide means according to the first aspect of the present invention, the metal wire is wound between the extension portion and the guide portion, and a holding portion having an inner diameter for accommodating the tip is formed. In the guide wire guiding means of the first or second feature, the third feature is that the central axis of the root portion and the guide portion is formed coaxially, and the first or second feature. In the guide wire guiding means of the fourth aspect, the root portion and the guide portion are arranged in parallel so that the central axes thereof are parallel to each other. The guide wire guiding means of the fourth feature is characterized in that the root portion and the guide portion are arranged in parallel. The guide wire guide means of any one of the above features has a plurality of welded metal wires adjacent to each other at the root portion and the guide portion. That the weld was formed. It is a feature of the.

Further, the present invention provides a flexible sheath having a long cylindrical shape, an operation wire inserted into the cylinder of the flexible sheath so as to freely advance and retract, and a terminal end coupled to a rear end tip of the operation wire tip, A basket-type endoscopic apparatus treatment instrument comprising: a basket portion formed of a plurality of basket wires formed so as to elastically shrink or expand in a state where the tip is coupled as a tip.
A root portion wound with a metal wire so as to have an inner diameter smaller than the outer diameter of the tip, and a guide portion for guiding the guide wire by winding the metal wire so as to have an inner diameter penetrating the guide wire. The tip portion is formed by winding a metal wire having elasticity to connect the base portion and the guide portion and extending an extension portion so that a guide wire can be inserted into the guide portion. A seventh feature is that guide wire guide means is provided, which is positioned on the tip side from the root portion, and is configured such that a plurality of basket wires coupled by the tip tip penetrate the root portion.

  Further, the present invention is the treatment instrument for a basket type endoscope device according to the seventh feature, wherein the guide wire guide means winds the metal wire between the extension portion and the guide portion, and the tip An eighth feature of the present invention is to provide a holding portion having an inner diameter for storing the tip, and in the treatment instrument for a basket type endoscope device according to the seventh or eighth feature, the guide wire guide means includes the root portion and the guide portion. In the basket type endoscope treatment instrument according to the seventh or eighth feature, the guide wire guide means has a center between the root portion and the guide portion. In the treatment instrument for a basket type endoscope apparatus according to the tenth feature, the guide wire guide means has a longitudinal direction of the root portion and the guide portion. Line up so that the positions overlap According to an eleventh feature, in the treatment tool for a basket type endoscope apparatus according to any one of the seventh to eleventh features, a plurality of welds obtained by welding the coil-shaped adjacent metal wires of the root part and the guide part are provided. The formation is a twelfth feature.

  The treatment device for a basket type endoscope apparatus provided with the guide wire guide means and the guide wire guide means according to the present invention includes a root portion wound with a metal wire so that the inner diameter is smaller than the outer diameter of the tip of the tip, and a guide wire. A guide part for guiding a guide wire by winding a metal wire so as to have an inner diameter to be penetrated, and the base part and the guide part are connected to each other so that the guide wire can be inserted into the guide part. The extension portion is formed of a metal wire having elasticity, and the tip tip is positioned on the tip side from the root portion, and a plurality of basket wires coupled by the tip tip pass through the root portion. By configuring the means, a thick guide wire having high rigidity can be easily inserted into the bile duct in the nipple.

The figure which shows the whole structure of the treatment tool for basket type | mold endoscope apparatuses provided with the guide wire guide means by Example 1 of this invention. The figure for demonstrating the guide wire guide means by Example 1 of this invention. The figure for demonstrating the guide wire guide means by Example 2 and 3 of this invention. The figure for demonstrating the guide wire guide means by Example 4 and 5 of this invention. The figure for demonstrating the subject of the treatment tool for basket type | mold endoscope apparatuses provided with the guide wire guide means by this invention. The figure for demonstrating the guide wire guide means by other Examples of this invention.

  Hereinafter, a plurality of embodiments of a treatment instrument for a basket type endoscope apparatus provided with a guide wire guiding means and a 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 instrument for a basket type endoscope apparatus having a guide wire guiding means according to the first embodiment of the present invention is made up of a resin or a coil such as a flat (coiled) coil. An elongated flexible sheath 2, a cylindrical distal end fitting 20 made of a hard metal material attached to the distal end side of the flexible sheath 2, and an operation to be inserted into the flexible sheath 2 so as to be able to advance and retract. A wire 3, an operation portion 10 attached to the rear end of the operation wire 3 for moving the operation wire 3 forward and backward, and a plurality of basket wires 8 connected to the tip of the operation wire 3. The basket portion 4 for grasping or crushing stones, which is a treatment portion that can be protruded and retracted from within the flexible sheath 2 by advancing and retreating operation, is extended along the flexible sheath 2 from the operation portion 10 side and is advanced and retracted High rigidity (relatively thick) guy Includes a wire 9, it is attached to the distal end of the basket portion 4, and a guide wire guiding means 70 for guiding the guide wire 9 in an arbitrary direction.

  The basket portion 4 is attached to the tips of the plurality of basket wires 8 which are a plurality of metal wires having elastic restoring force and the operation wire 3, and the rear end side (the operation portion 10 side) of the plurality of basket wires 8 is attached. A rear end tip 7 that is integrally coupled to the operation wire 3 and a front end tip 6 that is a portion where the front end sides of the plurality of basket wires 8 are integrally joined together are provided. The front end tip 6, the rear end tip 7, In the state in which the interval is extended and accommodated in the flexible sheath 2, the shape is long, and in the state where the space is extended from the flexible sheath 2, the baskets 8 are formed into a basket shape by the elastic restoring force of the basket wires 8. It is configured to elastically shrink or expand. In addition, the tip 6 is a portion formed in a spherical shape by heating a filler material in which the tips of a plurality of basket wires 8 are gathered by welding or the like using a filler material in this embodiment. However, the present invention is not limited to this, and it may be formed using other parts such as a plurality of basket wire tips inserted and coupled into a cylindrical metal. In the present application, a portion obtained by combining the tip portions of the plurality of basket wires is referred to as a tip.

  The operation unit 10 penetrates the grip 14 that is attached to the rear end of the operation wire 3 via the operation pipe 12 and the operation pipe 12 of the grip 14 that is attached to the operation wire 3, and the water supply port 13 is opened. And an operating portion body 11 that moves the operating wire 3 relative to the flexible sheath 2 by moving the gripping portion 14 back and forth. The water supply port 13 has an inner end communicating with the in-cylinder space of the operation unit main body 11, and is configured so that an injection or the like (not shown) can be attached to supply a drug solution or the like into the flexible sheath 2.

  In particular, as shown in FIG. 2, the guide wire guiding means 70 according to this embodiment includes 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 6, and a distal end side of the root portion 74 (see FIG. A holding portion 73 for holding the tip tip 6 by winding a metal wire so as to be larger than the outer diameter of the tip tip 6, and the tip side of the holding portion 73 (left side in the figure) A guide part 71 for guiding the guide wire 9 by winding a metal wire so as to have an inner diameter penetrating the guide wire 9, and connecting the holding part 73 and the guide part 71 to each other. 9 includes an extension portion 72 extending so as to be spaced from the guide portion 71. The base portion 74, the holding portion 73, the extension portion 72, and the guide portion 71 are wound with a single metal wire. Configured.

  The root portion 74 and the holding portion 73 hold the tip portion 6 by extending a plurality of basket wires 8 extending from the tip portion 6 toward the operating portion and projecting from the root portion 74 by their own elastic restoring force. Since the tip tip 6 is held in the portion 73, the tip 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 distal tip 6 and the guide wire 9 are about 1 mm, the root portion 74 has an inner diameter of 0.85 mm, a length of 1.0 mm, and the holding portion 73 has an outer diameter of 1. 34 mm, length 20. mm, the guide part 71 has an inner diameter of 1.8 mm, a length of 20. mm is preferred. The length of the guide portion 71 is preferably at least twice the guide wire diameter 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 apparatus treatment tool configured as described above includes a first step of forming the spherical tip 6 by joining the tips of the plurality of basket wires 8 using wax welding or the like. The rear ends of the plurality of basket wires 8 whose tips are joined in the first step are passed through the root portion 74 from the tip side of the guide portion 71 until the tip tip 6 comes into contact with the tip of the root portion 74 (drawing). A second step of projecting to the right side), and a third step of bending the basket wire 8 projected in the second step outward and fixing the bent portion of the basket wire 8 and the tip 6 with the root portion 74 interposed therebetween. Can be assembled. In the embodiments described later, similarly, the tip of a plurality of basket wires 8 is formed by spherical welding or the like, and the basket wire 8 is projected until the tip tips 6 come into contact with the root portion 74. The wire 8 is bent outward, and the folded basket wire 8 and the tip 6 are assembled by sandwiching and fixing the root portion 74, but the order is not limited.

  As shown in FIG. 1, the treatment instrument for a basket type endoscope apparatus having the guide wire guiding means according to the present embodiment configured as described above has a base portion 74 and a holding portion 73 of the guide wire guiding means 70 as a basket portion. The guide wire 9 is fixed to the tip tip 6 at the four tips, the guide portion 71 protrudes through the guide wire 9 inside, and the guide wire guide 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 nipple.

[Other Examples]
The guide wire guiding means according to the first embodiment described above includes a root portion 74 having an inner diameter smaller than the diameter of the distal tip 6, a holding portion 73 having a larger diameter than the outer diameter of the distal tip 6, and an inner diameter guiding portion 71 that penetrates the guide wire 9. However, the guide wire guiding means according to the present invention is not limited to these structures, and may have other shapes. Other embodiments will be described below.

  The guide wire guiding means according to the second embodiment also serves as an extension portion and a holding portion according to the first embodiment. As shown in FIG. 3A (a), the guide wire guiding means is a metal having a smaller inner diameter than the diameter of the tip 6. To guide the guide wire 9 by winding a metal wire so as to have an inner diameter that penetrates the guide wire 9 and is located on the distal end side (left side in the figure) of the root portion 74 around which the wire is wound The guide portion 71 is connected to the base portion 74 and the guide portion 71 by bending a metal wire so that the guide wire 9 can be inserted into the guide portion 71 and the tip tip 6 can be accommodated therein. It consists of the part 72, and is comprised 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 in a state where the operation portion side of the tip 6 is abutted against the distal end side of the root portion 74 as illustrated. Since 8 expands by its own elastic restoring force, the root portion 74 can prevent the tip 6 from coming off.

  In particular, in this embodiment, 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, so that a space for inserting the guide wire 9 is reduced while reducing the number of wires. Since the guide wire protrudes through the inside of the guide portion 71 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 placed in the nipple. 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, and the central axis Z1 of the guide portion 71 with respect to the central axis Z0 of the holding portion 73 and the root portion 74. The components are the same as those in the first embodiment shown in FIG. 1 except for the extension 72. Note that the drawing of the tip tip 6 and the basket wire 8 is omitted in the embodiments after the third embodiment.

  In the guide wire guiding means according to the third embodiment, the central axis Z1 of the guide portion 71 that penetrates the guide wire 9 is transverse 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, there is no obstacle to the treatment, A thick guide wire 9 having high rigidity can be easily inserted into the bile duct in the nipple.

  As shown in FIG. 3B (a), the guide wire guiding means according to the fourth embodiment also serves as an extension portion and a holding portion according to the third embodiment, and has a metal wire so that the inner diameter is smaller than the diameter of the tip 6. The guide wire 9 is guided by winding a metal wire so as to have an inner diameter that penetrates the guide wire 9 and is shifted by the shift amount Lb with respect to the central axis Z0 of the root portion 74. And an extended portion 72 that connects and extends the shifted root portion 74 and the guide portion 71, and the center axis of the root portion 74 and the guide portion 71 is shifted. It is a thing.

  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. Therefore, the thick guidewire 9 having a large rigidity can be easily inserted into the bile duct in the nipple without any obstacles to the treatment.

  As shown in FIG. 3B (b), the guide wire guiding means according to the fifth embodiment is formed by arranging the root portion and the guiding portion according to the fourth embodiment so that their longitudinal positions overlap each other. A root portion 74 in which a metal wire is wound so as to have an inner diameter smaller than the diameter, and the distal end side is positioned substantially at the same position as the distal end side (left side in the figure) of the root portion 74, so that the inner diameter penetrates the guide wire 9 A guide part 71 for winding a metal wire around the guide wire 9 and an extension part 72 for connecting and extending the base part 74 and the guide part 71 are provided.

  The guide wire guiding means according to the fifth embodiment further reduces the shift amount Lc in addition to the other effects that can hold the guide wire 9 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 parallel, the straightness of the guide wire is improved against the elastic force of the guide wire 9 when the guide wire 9 penetrates the guide portion 71. Can do. 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 protrude from 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 guiding means according to the present invention is not limited to that in each of the above-described embodiments, and includes a guide wire guiding means configured by a wound spring structure having an elastic restoring force, The direction of is not limited to the same or parallel to the central axis of the root portion, but may be changed by a predetermined angle in order to facilitate the insertion of the guide wire or to restrict the direction of the guide wire.

  In the guide wire guiding means according to the above-described embodiment, the root portion 74, the holding portion 73, and the guiding portion 71 are formed in a coil shape in which a metal wire is wound. As shown in (c) to (c), for example, a welded portion 77 formed by laser welding may be formed on the adjacent metal wire in the coil shape, and the welded portion 77 may be configured to improve the strength of the coil structure. On the outer circumference of the coil viewed from the axial direction of the coil, at least two locations may be formed at the target position, or a plurality of locations at equal angles, and the welding method is not limited to laser welding.

2 flexible sheath, 3 operation wire, 4 basket part, 6 tip,
7 rear end tip, 8 basket wire, 9 guide wire, 10 operation section,
11 Operation section body, 12 Operation pipe, 13 Water supply port, 14 Grip section, 20 Tip fitting,
22 bile ducts, 23 stones, 70 guide wire guide means, 71 guide parts, 72 extension parts,
73 Holding part, 74 Root part, 77 Welded part, Papilla, 230 Calculus

Claims (12)

A long cylindrical flexible sheath, an operation wire inserted into the cylinder of the flexible sheath so as to be able to advance and retreat, a terminal end is coupled to a rear end tip of the operation wire tip, and a tip is coupled as a tip tip And a basket portion composed of a plurality of basket wires formed so as to be elastically reduced in diameter or expanded in a state in which the guide wire is in a state of being guided, and guides the basket portion with the guide wire. A guide means,
The guide wire guiding means has a base portion wound with a metal wire so that the inner diameter is smaller than the outer diameter of the tip of the tip, and a guide wire by winding the metal wire so as to have an inner diameter penetrating the guide wire. A metal part having elasticity is wound around a guide part for guiding, and an extension part that connects the base part and the guide part and extends so as to leave a space where the guide wire can be inserted into the guide part. Guide wire guide means configured such that the tip is positioned on the tip side from the root and a plurality of basket wires coupled by the tip are passed through the root.   The guide wire guiding means according to claim 1, wherein the metal wire is wound between the extension portion and the guide portion to form an inner diameter holding portion for storing the tip.   The guide wire guide means according to claim 1 or 2, wherein a central axis of the root portion and the guide portion is formed coaxially.   The guide wire guiding means according to claim 1 or 2, wherein the root portion and the guide portion are arranged in parallel so that center axes thereof are parallel to each other.   The guide wire guide means according to claim 4, wherein the base portion and the guide portion are arranged in parallel so that the longitudinal positions thereof overlap each other.   The guide wire guiding means according to any one of claims 1 to 5, wherein a plurality of welded portions are formed by welding adjacent metal wires in a coil shape of the root portion and the guide portion. A long cylindrical flexible sheath, an operation wire inserted into the cylinder of the flexible sheath so as to be able to advance and retreat, a terminal end is coupled to a rear end tip of the operation wire tip, and a tip is coupled as a tip tip A basket-type endoscopic apparatus treatment instrument comprising: a basket portion composed of a plurality of basket wires formed so as to be elastically reduced in diameter or expanded in a state of being formed;
A root portion wound with a metal wire so as to have an inner diameter smaller than the outer diameter of the tip, and a guide portion for guiding the guide wire by winding the metal wire so as to have an inner diameter penetrating the guide wire. The tip portion is formed by winding a metal wire having elasticity to connect the base portion and the guide portion and extending an extension portion so that a guide wire can be inserted into the guide portion. A basket-type endoscopic apparatus treatment device provided with guide wire guide means configured such that a plurality of basket wires coupled by the tip are passed through the root portion.   8. The basket-type endoscope apparatus according to claim 7, wherein the guide wire guide means includes a holding portion having an inner diameter that winds the metal wire between the extension portion and the guide portion and accommodates the tip. Treatment tool.   The basket type endoscope apparatus treatment tool according to claim 7 or 8, wherein the guide wire guide means has a coaxial central axis between the root portion and the guide portion.   The treatment device for a basket type endoscope apparatus according to claim 7 or 8, wherein the guide wire guide means is arranged in parallel so that the central axis of the root portion and the guide portion are parallel to each other.   The treatment tool for a basket type endoscope apparatus according to claim 10, wherein the guide wire guide means are arranged side by side so that longitudinal positions of the root portion and the guide portion overlap each other.   The treatment tool for a basket type endoscope apparatus according to any one of claims 7 to 11, wherein a plurality of welded portions are formed by welding adjacent metal wires in a coil shape of the root portion and the guide portion.