Mesh basket for stone treatment
By designing a split-flap and cutting integrated mesh basket, the magnetic connection and serrated cutting wire are used to solve the problem that existing mesh baskets are difficult to fit and cut huge stones, achieving safe and efficient stone treatment.
Patent Information
- Application Number
- CN202422098150.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-28
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-08-28
AI Technical Summary
The existing stone-taking net baskets are difficult to adapt to stones of different sizes and shapes, and they are prone to leaking or inlaid when removing huge stones, which poses safety risks and inefficiency problems.
A integrated net basket with split flap and cutting is designed. The main body of the net basket is formed by magnetically connected wire flange, which can be transformed from a loose state to a tight state. After taking huge stones, it can be cut into small stones, and tug-saw cutting is performed using serrated cutting wires.
Firmly mosaic and safe cutting of huge stones is achieved, avoiding slippage and insulating of stones during removal, and improving the safety and efficiency of the surgery.
Smart Images
Figure CN223143557U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical devices, and particularly relates to a basket for stone treatment. Background Art
[0002] Stone diseases are common health problems globally. Among them, large gastric stones and large gallstones bring great pain and health risks to patients due to their size and complexity.
[0003] Traditional stone treatment methods mainly use minimally invasive surgery. The treatment means usually involve using a stone extraction basket to retrieve stones under the guidance of an endoscope and using an electromechanical device or laser to break the stones. However, the existing stone extraction baskets have the following limitations:
[0004] (1) In the existing stone extraction baskets, the density of the basket wires is fixed, making it difficult to adapt to stones of different sizes and shapes. A basket specifically designed to retrieve small-sized stones cannot retrieve large stones, and a larger-sized basket cannot effectively and firmly fix large stones during the retrieval process, resulting in the easy leakage of large stones from the basket during the stone extraction process. In addition, when removing large stones, impaction is likely to occur in the patient's body cavity, making the stone extraction process complex and inefficient, and increasing the discomfort of the patient.
[0005] (2) During the stone extraction process, using an electromechanical device or laser to break the stones cannot minimize the damage to surrounding healthy tissues to the greatest extent, posing certain safety risks and being costly. Summary of the Utility Model
[0006] The purpose of the utility model is to design a split and cutting integrated basket. The splitting mechanism of the basket enables the main structure of the basket to change from loose to tight. After retrieving a large stone, the stone can be firmly embedded. The stone firmly embedded in the basket can be cut into smaller stones for safe removal or excretion from the body, and the main structure of the basket in the tight state is conducive to preventing the stone from accidentally shifting or slipping during the cutting process.
[0007] To achieve the above purpose, the utility model provides a basket for stone treatment, including at least two sets of retrieval wires, an outer sheath tube, and a handle. Among them,
[0008] The proximal end of the outer sheath tube is connected to the handle;
[0009] The handle is provided with at least four symmetrically arranged through holes;
[0010] The extraction wire comprises a first extraction wire and a second extraction wire, and both ends of the first extraction wire and the second extraction wire extend out of the handle through four through holes in the outer sheath tube respectively; the midpoint of the first extraction wire and the midpoint of the second extraction wire are connected by magnetic force to form the end of the basket body, and when the end of the basket body extends out of the outer sheath tube toward the distal end, the extraction wire extending out of the outer sheath tube arches in the radial direction to form a mesh for extracting stones;
[0011] Each of the extraction wires is composed of n cutting wires. When the basket body extracts the stone, each of the extraction wires can be decomposed into n cutting wires for sawing the stone.
[0012] The n is a positive integer greater than or equal to 2.
[0013] Furthermore, the n cutting wires are connected through at least three connection points to form a single strand of sheathed wire.
[0014] Furthermore, the connection point is a bonding point, an adhesive is coated at the bonding point, and n cutting wires are connected by bonding to form the sleeve wire.
[0015] Furthermore, the adhesive is dissolved in physiological saline, and each strand of the sheathing wire is decomposed into n cutting wires by flushing with physiological saline.
[0016] Furthermore, the connection point is a magnetic connection point, a magnetic material coating is applied at the magnetic connection point, and n cutting wires are connected by magnetic force to form the sleeve wire.
[0017] Furthermore, each of the sheathing wires is decomposed into n cutting wires by reciprocatingly drawing the cutting wires therein.
[0018] Furthermore, the sheathing wire comprises a cutting wire sheathing, and n cutting wires are wrapped by the cutting wire sheathing to form a single strand of sheathing wire, and both ends of the cutting wire sheathing extend out of the handle through the through hole.
[0019] Furthermore, each strand of the sheathed wire is decomposed into n cutting wires by taking out the cutting wire sheathing tube.
[0020] Furthermore, a serrated structure is provided on the inner side of the cutting wire.
[0021] Furthermore, a prompt mark is provided on the handle, and the prompt mark is used to indicate different sleeve wires.
[0022] Compared with the prior art, the utility model has at least the following beneficial effects:
[0023] (1) The basket main structure provided by the present utility model can achieve a transformation from a loose state to a tight state: on the one hand, when using the snaring wire to snare stones, the basket main structure is in a loose state, and the mesh size of the basket main structure can be adjusted by pushing and pulling the handle to achieve the snaring of large stones; on the other hand, since the basket main structure has a splitting function, each snaring wire can be decomposed into n cutting wires, so the basket main structure can achieve a transformation from a loose state to a tight state, enabling the basket main body to wrap the stones more tightly and providing a more secure fitting, thereby making it difficult for the stones to shift or slip out of the basket main body.
[0024] (2) In the basket provided by the present utility model, the cutting wire is provided with a serrated structure on the inner surface facing the stones. The operator can achieve a sawing-like cutting of large stones by reciprocally pulling the cutting wire. Through multiple cuts in multiple directions, the large stones are chopped into smaller stones, which is convenient for discharging or removing. And during the cutting process, in addition to the pulled cutting wire, the serrated structures of several other cutting wires are firmly embedded in the stones, effectively preventing the stones from leaking out of the basket main body during the cutting process. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 is a schematic structural diagram of the basket provided by the present utility model; wherein, a represents the unsplit basket main body, and A is a partial enlarged view of a single-strand snaring wire in the unsplit basket main body in Embodiments 1-2; b represents the basket main body in a tight state after the snaring wire is decomposed into cutting wires, and B is a partial enlarged view of a single-strand snaring wire in the outer sheath tube.
[0026] Figure 2 is an enlarged schematic structural diagram of a single cutting wire in the basket provided by the present utility model.
[0027] Figure 3 is a partial enlarged view of a single-strand snaring wire in the unsplit basket main body in Embodiment 3.
[0028] DESCRIPTION OF THE REFERENCE NUMERALS IN THE DRAWINGS:
[0029] Snaring wire 10, first end 11 of the first snaring wire, second end 11' of the first snaring wire, first end 12 of the second snaring wire, second end 12' of the second snaring wire, cutting wires 111, 112, 113 constituting the first snaring wire, cutting wires 121, 122, 123 constituting the second snaring wire,
[0030] Outer sheath tube 20,
[0031] Handle 30,
[0032] Basket main body 40,
[0033] Serrated structure 50,
[0034] Connection point 60,
[0035] Cutting wire sleeve 70,
[0036] Basket 100. Detailed implementation manners
[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0038] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0039] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0040] As used in the present utility model, "proximal end" refers to the direction close to the operator, and "distal end" refers to the direction close to the interior of the patient's body cavity.
[0041] As used in the present utility model, "mesh opening" refers to the spaced gap formed between adjacent wire loops in the basket body.
[0042] To solve the problems of ineffective extraction, firm embedding and cutting of huge stones and improve the safety of the operation, the present utility model provides a basket 100 for stone treatment, including a basket body 40. Through deconstruction operation, the structure of the basket body 40 can be changed from a loose state to a tight state, and on the basis of firmly extracting the stone, the cutting of huge stones can also be realized.
[0043] The basket 100 includes at least two wire loops 10, an outer sheath 20 and a handle 30.
[0044] Wherein, the proximal end of the outer sheath tube 20 is connected to the shown handle 30.
[0045] At least four symmetrically arranged through holes (not shown in the figure) are provided in the handle 30, and the through holes are for the extraction wire 10 to pass through, and the diameter of the through holes is slightly larger than the diameter of the extraction wire 10.
[0046] The extraction wire 10 includes a first extraction wire and a second extraction wire. The two ends of the first extraction wire and the second extraction wire respectively extend out of the handle 30 through four through holes from the inside of the outer sheath tube 20. The extraction wire 10 can reciprocate in the length direction of the outer sheath tube 20. When the wire basket 100 is in a tightened state, the extraction wire 10 is located in the outer sheath tube 20. The midpoint of the first extraction wire and the midpoint of the second extraction wire are magnetically connected to form the end of the wire basket main body 40. When the operator pulls the handle 30 proximally, the end of the wire basket main body 40 moves distally and gradually exposes outside the outer sheath tube 20, and the exposed extraction wire 10 resumes its pre-shaped state, and arches radially to form the mesh holes in the wire basket main body 40. The diameter of the wire basket main body 40 is 3 cm to 20 cm, and it is spindle-shaped or spherical, and is used for extracting large stones. By pulling the handle 30 proximally or pushing the handle 30 distally, the size of the mesh holes in the structure of the wire basket main body 40 can be controlled.
[0047] Each strand of the extraction wire 10 is composed of n cutting wires. When the wire basket main body 40 extracts a stone, each strand of the extraction wire 10 on the wire basket main body 40 can be separated into n cutting wires through a deconstruction operation. The operator can perform a sawing cut on the stone by reciprocatingly pulling the proximal end of the cutting wire back and forth. The n is a positive integer greater than or equal to 2.
[0048] The present utility model will be described in detail below in conjunction with embodiments.
[0049] Embodiment 1
[0050] As Figure 1 shown in a of, the wire basket 100 provided in this embodiment includes two strands of extraction wires 10, an outer sheath tube 20 and a handle 30. Wherein, the distal end of the outer sheath tube 20 is fixedly connected to the handle 30; 4 symmetrically arranged through holes (not shown in the figure) are provided in the handle 30, and the diameter of the through holes is slightly larger than the diameter of a single strand of extraction wire 10 for the extraction wire 10 to pass through; the extraction wire 10 includes a first extraction wire and a second extraction wire, and the two ends of the first extraction wire and the second extraction wire respectively extend out of the handle 30 through the through holes from the inside of the outer sheath tube 20. The midpoint of the first extraction wire and the midpoint of the second extraction wire are magnetically connected to form the end of the wire basket main body 40.
[0051] The magnetic connection is as follows: By applying a magnetic material coating at the midpoints of the first wire extraction part and / or the second wire extraction part, magnetic suction is generated, enabling magnetic connection of the midpoints of the first wire extraction part and the second wire extraction part. The magnetic material includes, but is not limited to: ferrite, neodymium iron boron, neodymium magnet, and alnico.
[0052] The wire extraction part 10 can reciprocate relative to the outer sheath tube 20. When the operator pulls the handle 30 proximally, the handle 30 drives the outer sheath tube 20 to move proximally, causing the end of the basket body 40 to move distally, gradually exposing the outer sheath tube 20. The wire extraction part 10 of the exposed outer sheath tube 20 can arch in the radial direction to form meshes in the basket body 40. The farther the handle 30 is pulled proximally, the longer the length of the wire extraction part 10 of the exposed outer sheath tube 20, and the larger the formed meshes, that is, the larger the basket body 40, so as to extract stones of larger sizes. When the operator pushes the handle 30 distally, the handle 30 drives the outer sheath tube 20 to move distally, causing the wire extraction part 10 to move proximally and gradually retract into the outer sheath tube 20, thereby tightening the basket body 40. By adjusting the telescopic distance between the wire extraction part 10 and the outer sheath tube 20, the size of the meshes in the basket body 40 can be adjusted to adapt to the extraction of stones of different sizes. In some embodiments, the formed basket body 40 has a diameter of 3 cm to 20 cm and is spindle-shaped or spherical.
[0053] In some embodiments, the wire extraction part 10 (including the cutting wire) is made of a metal material with elastic memory function. Preferably, a titanium-nickel alloy material is used. The middle parts of the two wire extraction parts 10 (i.e., the basket body 40 part) are pre-shaped into a basket shape. When the wire extraction part 10 extends out of the outer sheath tube 20, the wire extraction part 10 extending out of the outer sheath tube 20 can automatically expand to form the basket body 40, and the wire extraction part 10 can maintain its pre-shaped form during multiple uses. When the extended wire extraction part 10 is at different distances from the outer sheath tube 20, the wire extraction part 10 will generate different elastic tensions, thereby forming basket bodies 40 of different sizes.
[0054] Specifically, continue to refer to Figure 1 a in the figure. The first end and the second end of the first wire extraction part are respectively denoted as 11 and 11', and the first end and the second end of the second wire extraction part are respectively denoted as 12 and 12'. Both the first wire extraction part and the second wire extraction part can reciprocate relative to the outer sheath tube 20 in the length direction of the outer sheath tube 20. For example, when the first end 11 of the first wire extraction part moves proximally, it can drive its second end 11' to move distally, realizing a sawing-like movement.
[0055] Figure 1Figure A is a partial enlarged view of a single strand of the extraction wire 10 in the non-deconstructed wire basket body 40 in this embodiment. To show that in this embodiment, each strand of the extraction wire 10 is formed by connecting 3 cutting wires through connection points 60. As Figure 2 shown, a serrated structure 50 is provided on the inner side of the cutting wire facing the wire basket body 40 for cutting stones.
[0056] As Figure 1 shown in Figure b, for the first extraction wire, the 3 cutting wires forming the first extraction wire are respectively denoted as 111, 112, and 113. The first end 11 of the first extraction wire is formed by the first ends of the cutting wires 111 to 113 respectively. Similarly, the second end 11' of the first extraction wire is formed by the second ends of the cutting wires 111 to 113 respectively. Figure 1 Figure B is a partial enlarged view of a single strand of the extraction wire 10 in the outer sheath tube 20 in this embodiment. To show that in this embodiment, the cutting wires 111 to 113 are arranged in parallel and are closely adjacent to each other inside the outer sheath tube 20.
[0057] In the wire basket body 40, a number of connection points 60 are included on the cutting wires 111 to 113. In this embodiment, the connection points 60 are bonding points. When no cutting operation is required, the cutting wires 111 to 113 are adhesively connected to each other through a number of bonding points 60 using an adhesive to form the first extraction wire. The adhesive is soluble in physiological saline. The adhesive includes but is not limited to: starch adhesive, fibrinogen adhesive, cyanoacrylate, and adhesive hydrogel. In this embodiment, rice starch adhesive is used to bond the cutting wires 111 to 113 through 3 bonding points (not shown in the figure) to form the first extraction wire.
[0058] The method of forming the second extraction wire by the cutting wires 121, 122, and 123 is the same as the above.
[0059] When the extraction wire 10 is deconstructed, the operator reciprocally pulls the proximal end of one of the cutting wires, and the midpoint of the pulled cutting wire can be separated from the magnetic connection with other cutting wires at the end of the wire basket body 40 to perform a sawing cut on the stone.
[0060] When the first end of the cutting wire moves proximally in the length direction of the outer sheath tube 20, it can drive its second end to move distally in the length direction of the outer sheath tube 20, and vice versa, so as to perform a sawing cut on the stone.
[0061] In this embodiment, during minimally invasive surgery, the basket 100 is used in cooperation with an endoscope (not shown in the figure). Through the endoscope, the situation of stone extraction or cutting can be observed. The endoscope includes a flushing forceps channel. After the stone is extracted using the basket body 40, if the stone is too large and needs to be cut, the basket body 40 is deconstructed. The deconstruction process is as follows: saline is flushed through the flushing forceps channel in the endoscope onto the basket body 40. After the adhesive melts, as Figure 1 shown, the two extraction wires 10 at the basket body 40 are deconstructed into 6 cutting wires in total. At this time, the structure of the basket body 40 changes from a loose state to a tight state. By pulling the proximal end of the extraction wire 10, the relative position between the basket body 40 and the stone is adjusted so that the cutting wires are firmly embedded in the stone. Then, the cutting wires are used to cut the stone in a sawing motion. During the cutting process, the basket body 40 is gradually tightened until the cutting wires are embedded in the stone to fix the stone for sawing. Taking the first extraction wire as an example, the cutting method of the basket 100 is as follows: the operator pulls the first end (the first end 11 of the first extraction wire) or the second end (the second end 11' of the first extraction wire) of the cutting wires 111 - 113 towards the proximal end. Correspondingly, the second end or the first end of the cutting wires 111 - 113 is pushed towards the distal end, and one sawing motion can be achieved. By repeating the above actions, the stone can be sawed multiple times. At the same time, by tightening the basket body 40 while cutting, the remaining multiple cutting wires can still firmly embed the stone, which is beneficial to preventing the stone from shifting or slipping out of the basket body during the cutting process.
[0062] The deconstruction process of the second extraction wire is the same as that of the first extraction wire.
[0063] In some embodiments, preferably, there is also a prompt mark (not shown in the figure) on the handle 30. The prompt mark is used to indicate different extraction wires 10 to the operator for convenient sawing. For example, for the first end 11 and the second end 11' of the first extraction wire, the handle 30 can use the same digital mark at the corresponding through holes for distinction.
[0064] The usage method of this embodiment:
[0065] Step 1, under the observation of the endoscope, the operator sends the distal end of the basket to the position of the stone in the patient's body, and the proximal end of the outer sheath tube and the handle are both outside the patient's body.
[0066] Step 2, the operator controls the relative position of the outer sheath tube and the extraction wire to extend the distal end of the extraction wire out of the distal end of the outer sheath tube to form a spindle-shaped or spherical basket body.
[0067] Step 3: Adjust the size of the meshes in the main body of the basket according to the size of the stone. The stone is snared into the main body of the basket through the meshes. Tighten the snaring wire so that the stone is firmly fitted in the main body of the basket.
[0068] Step 4: Flush physiological saline through the irrigation forceps channel of the endoscope to the bonding point of the main body of the basket, so that the adhesive at the bonding point melts, and the two snaring wires of the main body of the basket are deconstructed into 6 cutting wires.
[0069] Step 5: Reciprocally pull both ends of the cutting wire to cut the stone in a sawing motion. During the cutting process, gradually tighten the main body of the basket so that the serrated structure of the cutting wire is embedded in the stone, and keep the stone firmly fitted in the main body of the basket.
[0070] Step 6: Cut the stone into an appropriate size. Smaller stones can be directly discharged out of the body through the patient's digestive tract, and larger stones can be taken out of the patient's body together with the main body of the basket.
[0071] Embodiment 2
[0072] The difference between this embodiment and Embodiment 1 is that the method of forming the cutting wire into the snaring wire 10 is different.
[0073] In this embodiment, the cutting wire is connected by three connection points 60 to form the snaring wire 10. The connection point 60 is a magnetic connection point. A magnetic material coating is applied at the magnetic connection point of the first snaring wire and / or the second snaring wire, so that 3 cutting wires are connected by magnetism to form the snaring wire. The magnetic material includes but is not limited to: ferrite, neodymium iron boron, neodymium magnet, alnico.
[0074] Taking the first snaring wire as an example, the deconstruction process of the snaring wire 10 in this embodiment is described.
[0075] In this embodiment, the operator reciprocally twitches the proximal end of any one of the cutting wires 111, 112, 113, so that the magnetic connection point of the twitched cutting wire is separated from the magnetic adsorption under the action of an external pulling force. The operator reciprocally twitches different cutting wires to disconnect the magnetic connection, thereby realizing the deconstruction of the snaring wire 10.
[0076] The usage method of this embodiment:
[0077] The difference between the usage method of this embodiment and that of Embodiment 1 is that Step 4 is: the operator reciprocally twitches the cutting wire in the snaring wire, so that the magnetic connection between the twitched cutting wire and other cutting wires is disconnected, thereby realizing the deconstruction of the two snaring wires at the main body of the basket 40 into 6 cutting wires.
[0078] Embodiment 3
[0079] The difference between this embodiment and the first embodiment is that the method of forming the sleeve wire 10 with the cutting wire is different.
[0080] Taking the first set of wire extraction as an example, the deconstruction process of the set of wire extraction 10 in this embodiment is explained.
[0081] Figure 3 It is a partial enlarged view of the single strand of sheathing wire in the basket body 40 in this embodiment. To illustrate the present embodiment, the sheathing wire 10 further includes a cutting wire sheathing 70 . Three cutting wires are located in a cutting wire sheathing 70 to form the single strand of sheathing wire 10 .
[0082] For the first sheath wire, the first end and the second end of the cutting wire sheath 70 extend out of the handle 30 through the through hole at the first end 11 and the through hole at the second end 11' of the first sheath wire, respectively. After the stone sheath is completed, the operator can pull the first end of the cutting wire sheath 70 toward the proximal end to drive the second end of the cutting wire sheath 70 to move toward the distal end, and the second end passes through the basket body 40 and the inside of the outer sheath 20 in sequence, and passes through the through hole at the first end 11, so that the cutting wire sheath 70 is completely taken out, and at this time the first sheath wire is decomposed into the cutting wire for sawing cutting.
[0083] The method of using this embodiment is as follows:
[0084] The difference between the method of use of this embodiment and that of Embodiment 1 is that step 4 is: the operator pulls out the cutting wire sleeve of the sheathing wire at the handle, so that the two sheathing wires at the basket body are decomposed into 6 cutting wires.
[0085] In summary, the utility model provides a split and cutting integrated net basket for stone processing. The net basket body of the utility model can be split into a number of cutting wires through a deconstruction operation, so that its structure can be transformed from a loose state to a tight state, so that the net basket can engage the stone more tightly and provide a more secure fit. The utility model has the ability to process large stones, and a number of cutting wires can firmly fix the stones to prevent large stones from shifting or slipping during the cutting process. At the same time, different cutting wires can perform multi-directional cutting on large stones, which is convenient for breaking the stones into smaller stones that can be discharged or removed.
[0086] Although the content of the utility model has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the utility model. After reading the above content, various modifications and substitutions of the utility model will be obvious to those skilled in the art. Therefore, the protection scope of the utility model should be limited by the attached claims.
Claims
1. A basket for stone treatment, characterized in that, It includes at least two strands of sheath wire, an outer sheath tube, and a handle, wherein: The proximal end of the outer sheath is connected to the handle; The handle is provided with at least four symmetrically arranged through holes; The extraction wire comprises a first extraction wire and a second extraction wire, and both ends of the first extraction wire and the second extraction wire extend out of the handle through four through holes in the outer sheath tube respectively; the midpoint of the first extraction wire and the midpoint of the second extraction wire are connected by magnetic force to form the end of the basket body, and when the end of the basket body extends out of the outer sheath tube toward the distal end, the extraction wire extending out of the outer sheath tube arches in the radial direction to form a mesh for extracting stones; Each of the extraction wires is composed of n cutting wires. When the basket body extracts the stone, each of the extraction wires can be decomposed into n cutting wires for sawing the stone. The n is a positive integer greater than or equal to 2.
2. The basket for calculus treatment according to claim 1, characterized in that, The n cutting wires are connected through at least three connection points to form a single strand of sheathed wire.
3. The basket for calculus treatment according to claim 2, characterized in that, The connection points are bonding points, adhesive is coated at the bonding points, and n cutting wires are connected by bonding to form the sleeve wire.
4. The basket for calculus treatment according to claim 3, wherein, The adhesive is dissolved in physiological saline, and each strand of the sheathing wire is decomposed into n cutting wires by flushing with physiological saline.
5. The basket for calculus treatment according to claim 2, wherein, The connection point is a magnetic connection point, a magnetic material coating is applied at the magnetic connection point, and n cutting wires are connected by magnetic force to form the sleeve wire.
6. The basket for calculus treatment according to claim 5, wherein, Each of the sheathing wires is decomposed into n cutting wires by reciprocatingly drawing the cutting wires therein.
7. The basket for calculus treatment according to claim 1, wherein, The sheathing wire comprises a cutting wire sheathing tube, and n cutting wires are wrapped by the cutting wire sheathing tube to form a single strand of sheathing wire, and both ends of the cutting wire sheathing tube extend out of the handle through the through hole.
8. The basket for calculus treatment according to claim 7, wherein, Each strand of the sheathed wire is decomposed into n cutting wires by taking out the cutting wire sheath.
9. The basket for calculus treatment according to claim 1, characterized in that, A sawtooth structure is provided on the inner side of the cutting wire.
10. The basket for calculus treatment according to claim 1, wherein, The handle is also provided with a prompt mark, and the prompt mark is used to indicate different sleeve wires.