CN117737626A - Manufacturing process of medical stone-taking basket - Google Patents
Manufacturing process of medical stone-taking basket Download PDFInfo
- Publication number
- CN117737626A CN117737626A CN202311756609.7A CN202311756609A CN117737626A CN 117737626 A CN117737626 A CN 117737626A CN 202311756609 A CN202311756609 A CN 202311756609A CN 117737626 A CN117737626 A CN 117737626A
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- China
- Prior art keywords
- basket
- nickel
- titanium alloy
- wire
- manufacturing
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- Pending
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 38
- 229910001000 nickel titanium Inorganic materials 0.000 claims abstract description 63
- 229910052751 metal Inorganic materials 0.000 claims abstract description 54
- 239000002184 metal Substances 0.000 claims abstract description 54
- 238000000034 method Methods 0.000 claims abstract description 27
- 238000007493 shaping process Methods 0.000 claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 17
- 239000004575 stone Substances 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 4
- 238000001816 cooling Methods 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 6
- 238000002788 crimping Methods 0.000 claims description 4
- HLXZNVUGXRDIFK-UHFFFAOYSA-N nickel titanium Chemical compound [Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni] HLXZNVUGXRDIFK-UHFFFAOYSA-N 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 4
- 238000001356 surgical procedure Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005219 brazing Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000002485 urinary effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Surgical Instruments (AREA)
Abstract
The invention discloses a manufacturing process of a medical stone-taking basket, which relates to the technical field of medical baskets and comprises the following two steps: step one: making knotted basket wires; step two: manufacturing a basket head; the manufacturing material is nickel-titanium alloy wire; the device also comprises a basket wire clamp, a shaping clamp and a metal tube; the invention has the advantages of low input cost and reliable product quality, meets the operation requirement of taking stones from the basket at some special focus positions in clinic, and shapes the needed knots after the nickel-titanium alloy wires are subjected to heat treatment by the fixture; controlling the size of the knot by using the diameter of a mandrel with proper size; the basket can freely extend out and retract into the sheath tube in the operation process, the stress of the nickel-titanium alloy wire is uniform by uniform tension, the stress concentration at the knotting position is reduced, and the knotting position of the nickel-titanium alloy wire is prevented from being broken in the heat treatment process or the operation process.
Description
Technical Field
The invention relates to the technical field of medical baskets, in particular to a manufacturing process of a medical stone-taking basket.
Background
The four-wire headless stone-taking basket used in the field of minimally invasive stone taking at present has the advantages that the four-wire headless stone-taking basket is integrated, the basket head is integrally formed by a laser cutting technology for a nickel-titanium alloy metal pipe, then the basket head is subjected to heat treatment to obtain a required shape, and then a guide rope and the basket head are welded by a water-flame machine, so that the defect of the mode is that the basket manufacturing technology is high in requirement, the equipment cost is high, and the technical requirement on operators is also high.
Some manufacturers also try to use a basket with a guide head in order to reduce the equipment cost, the basket head is provided with an end cap, four or two nickel-titanium alloy wires penetrate through a first layer of metal tube, the first layer of metal tube is crimped and fixed, a shaping tool is used for shaping through heat treatment, then the second layer of metal tube penetrates through the second layer of metal tube, the second layer of metal tube is crimped and fixed, and meanwhile, the end cap is sleeved and fixed on the first layer of metal tube, and the first layer of metal tube is respectively positioned at two ends of the basket head on the second layer of metal tube. In the actual production process, in order to effectively control the effective size of the spoke and the length of the basket head, and meanwhile, in order to facilitate the production process, the nickel-titanium alloy wires of the basket are usually required to be prolonged and a lower metal tube is installed again, and then the basket head and the guide rope are connected and fixed through the lower metal tube.
The disadvantage of this approach is: a section of guide head is arranged at the front end of the basket, so that the distance from the basket to the head end of the basket is always kept, stones or foreign bodies at the front end of the surgical cavity are difficult to be sleeved in the process of taking stones in a surgery, the use is inconvenient, and the conditions of increasing the surgery time, pain of a patient and surgery risk are caused; also the passages of the human urinary system are not straight, and the presence of some bends is unavoidable. Thus, depending on the needs of the procedure, the endoscope channel is bent, and there is a possibility that the bending position and the basket head wire between the first layer of metal tube and the second layer of metal tube near the end of the guide wire overlap or approach. Because the diameters of the nickel-titanium alloy wires and the guide ropes on the basket are different, the rigidity is inconsistent, and because the diameter of the lower metal pipe is larger than that of the guide ropes, a step structure is formed, so that the resistance is increased when the guide ropes move forwards and backwards through an S-shaped curve in use, the basket is not beneficial to freely extending out and retracting into the sheath pipe, the operation difficulty is increased, or the basket stone extraction operation cannot be completed.
Disclosure of Invention
The invention aims to solve the technical problems that the manufacturing process of the medical stone-taking basket is high in manufacturing cost, high in manufacturing difficulty, inconvenient to use and capable of increasing operation time, resistance is increased when a guide rope moves back and forth at a curve when passing through an S-shaped curve, free extension and retraction of the basket are not facilitated, operation difficulty is increased or stone-taking operation of the basket cannot be completed.
The invention is realized by the following technical scheme.
The invention relates to a manufacturing process of a medical stone-taking basket, which comprises the following two steps:
step one: making knotted basket wires;
step two: and manufacturing the basket head.
Further, the manufacturing material is nickel-titanium alloy wire.
Further, the device also comprises a basket wire clamp, a shaping clamp and a metal tube.
Further, the basket wire clamp is provided with two crisscross grooves which are respectively a wire groove and a mandrel groove, pressing blocks are arranged at two ends of the wire groove, and screws are arranged on the pressing blocks.
Further, the shaping fixture consists of an upper cover, a lower cover and an oval core, wherein the oval core is provided with two grooves which are distributed in a crisscross manner, the lower cover is provided with a through hole, and the upper cover and the lower cover are connected and matched by using threaded matching.
Further, the metal tube is a circular sleeve, and a metal tube notch is formed in the metal tube.
Further, the specific steps for manufacturing the knotted basket wires in the first step are as follows:
s11: preparing a nickel-titanium alloy wire, a mandrel and a basket wire clamp, placing the nickel-titanium alloy wire in a wire groove and placing the mandrel in a mandrel groove;
s12: turning the two ends of the nickel-titanium alloy wire around the mandrel towards the other end to a wire slot for re-attaching, and pulling the traction nickel-titanium alloy wire towards the two sides to form a knotting position;
s13: fixing the nickel-titanium alloy wire and the clamp, and then placing the nickel-titanium alloy wire and the clamp into a heat treatment furnace for heat treatment;
s14: and after cooling, the mandrel is pulled out, the nickel-titanium alloy wire is taken down from the basket wire clamp, and the knotted position formed by knotting the formed nickel-titanium alloy wire is formed.
Further, the second step is as follows: the specific steps of the basket head are as follows:
s211: taking two formed nickel-titanium alloy wires to be assembled into a crisscross shape through penetration, and keeping the nickel-titanium alloy wires at the knotting position from being split;
s212: putting the nickel-titanium alloy wire which is cross-connected and assembled into a shaping fixture for heat treatment, and taking out and cooling;
s213: sleeving a metal tube on the nickel-titanium alloy wire, initially fixing the nickel-titanium alloy wire, the guide rope and the metal tube at the notch of the metal tube by using glue, and crimping the metal tube;
s214: and (3) cutting the redundant nickel-titanium alloy wires from the end surface of the metal tube in order.
Further, the above step S214 is modified as follows: and (3) cutting the redundant nickel-titanium alloy wires from the end face of the metal tube in order, and brazing the end face of the metal tube.
The invention has the beneficial effects that: the invention has the advantages of low input cost and reliable product quality, meets the operation requirement of taking stones from the basket at some special focus positions in clinic, and shapes the needed knots after the nickel-titanium alloy wires are subjected to heat treatment by the fixture; controlling the size of the knot by using the diameter of a mandrel with proper size; the basket is freely stretched out and retracted into the sheath tube in the operation process, the stress of the nickel-titanium alloy wire is uniform by uniform tension, the stress concentration at the knotting position is reduced, and the knotting position of the nickel-titanium alloy wire is prevented from being broken in the heat treatment process or the operation process;
through the breach structural design of tubular metal resonator, in actual production in-process, when the effective size of effective control basket head' S spoke, length, make the wire rope can be directly with tubular metal resonator connection, avoided the transition junction section of tubular metal resonator and wire rope, reduced the resistance when the wire rope passes S type bend department back-and-forth movement, the basket of being convenient for freely stretches out, withdraws the sheath pipe, snatchs the calculus more convenient, accurate.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained from these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic illustration of the engagement of a basket wire clamp (12) of an embodiment of the present invention;
FIG. 2 is a schematic illustration of the use of a basket wire clamp (12) according to an embodiment of the present invention;
FIG. 3 is a schematic view of a knotted basket wire in accordance with an embodiment of the present invention;
FIG. 4 is a schematic illustration of the engagement of knotted basket filaments in an embodiment of the present invention;
FIG. 5 is a schematic view of the shaping jig (14) according to the embodiment of the present invention;
FIG. 6 is a schematic diagram of a basket head according to an embodiment of the present invention;
FIG. 7 is a schematic view of the installation of a metal tube (13) according to an embodiment of the present invention;
FIG. 8 is a schematic view of the shearing of the basket head of an embodiment of the present invention;
FIG. 9 is a schematic diagram of brazing of a basket head according to an embodiment of the present invention.
Detailed Description
The invention will now be described in detail with reference to fig. 1-9, wherein for convenience of description, the orientations described below are now defined as follows: the vertical, horizontal, front-rear directions described below are identical to the vertical, horizontal, front-rear directions of the projection relationship of fig. 1 itself.
The manufacturing process of the medical stone-taking basket in combination with the accompanying drawings 1-9 comprises the following two steps:
step one: making knotted basket wires;
step two: and manufacturing the basket head.
Firstly, the wire is made into knotted basket wires, and then the knotted basket wires are used for making basket heads.
The manufacturing material is nickel-titanium alloy wire, which has good plasticity, abrasion resistance, corrosion resistance, high damping and super elasticity, and is widely applied to the field of medical equipment manufacturing.
The tools to be used and the auxiliary components to be installed include basket wire clamps 12 and sizing clamps 14, metal pipes 13.
The basket wire clamp 12 and the shaping clamp 14 are auxiliary manufacturing tools, and the basket wire clamp 12 is used for processing wires to form wires with knotting positions for manufacturing basket heads; the shaping fixture 14 is used for shaping wires, changing the shapes of the wires into stable arc structures, and enabling the wires to form the structure of the basket head.
The metal tube 13 is a part arranged on the basket, the metal tube 13 is a circular sleeve, a metal tube notch 1303 is arranged on the metal tube 13 and used for fixing wires of the basket, and wires at the tail of the basket and guide ropes are integrally formed in a bonding, crimping and welding mode.
The basket wire clamp 12 is provided with two crisscross grooves which are respectively a wire groove 120201 and a mandrel groove 120202, press blocks 1204 are arranged at two ends of the wire groove 120201, screws 1203 are arranged on the press blocks 1204 and are used for tightening wires of the press blocks 1204 for fixing the basket, the wire groove 120201 is used for placing wires, the mandrel groove 120202 is used for placing a mandrel, when the basket wire clamp is used, the screws 1203 are not tightened, the wires and the mandrel are placed in the wire groove 120201 and the mandrel groove 120202, the wires are turned 180 degrees around the mandrel, the wires are crossed around the mandrel, at the moment, the wires are in the wire groove 120201 under the press blocks 1204, and the wires are pulled to have certain tension, at the moment, the screws 1203 are tightened, and the wires are fixed.
The shaping fixture 14 is composed of an upper cover 1401, a lower cover 1402 and an elliptic core 1403, the elliptic core 1403 is arranged between the upper cover 1401 and the lower cover 1402, the elliptic core 1403 is provided with two grooves 140301 distributed in a crisscross manner, the lower cover 1402 is provided with a through hole 140201, the upper cover 1401 and the lower cover 1402 are connected and matched by using screw threads, wires are attached to the grooves 140301 on the elliptic core 1403, and the elliptic core 1403 with the wires is fixed between the upper cover 1401 and the lower cover 1402, so that the elliptic core 1403 forms a preliminary basket head shape.
The specific steps for manufacturing the knotted basket wires in the first step are as follows:
s11: a nitinol wire and a mandrel and basket wire fixture 12 are prepared, and the nitinol wire is placed in wire groove 120201 and the mandrel is placed in mandrel groove 120202, as shown in fig. 1.
The thickness of the nickel-titanium alloy wire is determined according to the design requirement of the basket, and the cut-off length of the nickel-titanium alloy wire can be too long to be too short so as to prevent the wire from being insufficient in length during manufacturing.
S12: turning one end 102 of the nickel-titanium alloy wire 1 around the mandrel 1201 towards the other end 101 to a wire re-attaching groove 120201, passing through a base groove 120201 below the pressing block 1204, turning the other end 101 of the nickel-titanium alloy wire 1 around the mandrel 1201 towards the original 102 end to the wire re-attaching groove 120201 in the same way, passing through the base groove 120201 below the pressing block 1204, pulling the nickel-titanium alloy wire to pull the nickel-titanium alloy wire towards two sides, so that the nickel-titanium alloy wire has a certain tension, and tightening a screw 1203 to fix the nickel-titanium alloy wire 1 to form a preliminary knotting position 104, as shown in fig. 2 and 3;
s12: the nickel-titanium alloy wire 1 and the clamp 12 are fixed and then put into a heat treatment furnace together for heat treatment, so that the knotting position of the nickel-titanium alloy wire is prevented from being broken in the heat treatment process or the operation process.
S14: after cooling, the mandrel 1201 is withdrawn, the nitinol wire 1 is removed from the basket wire fixture 12, and the knotted nitinol wire 103 is knotted to form a knotted location 104, as shown in fig. 3.
The basket head is manufactured by using the manufactured knotted basket wires, and the specific steps for manufacturing the basket head in the step two are as follows:
s211: taking two formed nickel-titanium alloy wires 103 to be assembled into a crisscross shape by penetrating and connecting, and keeping the nickel-titanium alloy wires at the knotting positions 104 from being split, as shown in fig. 4;
s212: the nickel-titanium alloy wire 103 which is assembled by cross-connection is arranged in a shaping fixture 14, the nickel-titanium alloy wire 103 is placed along a groove 140301 of an elliptic core 1403 on the shaping fixture 14, is fixed by the shaping fixture 14, is put into heat treatment equipment together with the shaping fixture 14 for heat treatment, and is taken out for cooling to form a basket head, as shown in fig. 5 and 6;
s213: sleeving a metal tube 13 on the nickel-titanium alloy wire 103, penetrating the guide rope 5 into the metal tube 13 to a position 1304, initially fixing the nickel-titanium alloy wire 103, the guide rope 5 and the metal tube 13 in a metal tube notch 1303 by using glue, and then crimping at a position 1301 and a position 1302 to fix the nickel-titanium alloy wire 103, the guide rope 5 and the metal tube 13, wherein the integrity is stronger, as shown in fig. 7;
s214: excess nitinol wires 103 are trimmed from the end face 1305 of the metal tube 13 as shown in fig. 8.
In other embodiments, step S214 further processes: excess nitinol wires 103 are trimmed from the end face 1305 of the metal tube and brazed 1306 to the end face 1305 of the metal tube to provide greater strength and integrity, as shown in fig. 9.
The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the present invention and implement it without limiting the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.
Claims (9)
1. A manufacturing process of a medical stone-taking basket is characterized in that:
step one: making knotted basket wires;
step two: and manufacturing the basket head.
2. The process for manufacturing the medical stone removal basket according to claim 1, wherein the process comprises the following steps of: the manufacturing material is nickel-titanium alloy wire (1).
3. The process for manufacturing the medical stone removal basket according to claim 2, wherein the process comprises the following steps of: the utility model also comprises a basket wire clamp (12), a shaping clamp (14) and a metal tube (13).
4. A process for manufacturing a medical stone removal basket according to claim 3, wherein: the basket wire clamp (12) is provided with two crisscross grooves which are respectively a wire groove (120201) and a mandrel groove (120202), pressing blocks (1204) are arranged at two ends of the wire groove (120201), and screws (1203) are arranged on the pressing blocks (1204).
5. The process for manufacturing the medical stone removal basket according to claim 4, wherein the process comprises the following steps of: the shaping fixture (14) consists of an upper cover (1401), a lower cover (1402) and an elliptical core (1403), wherein the elliptical core (1403) is provided with two grooves (140301) distributed in a crisscross manner, the lower cover (1402) is provided with a through hole (140201), and the upper cover (1401) and the lower cover (1402) are connected and matched by using threaded matching.
6. The process for manufacturing the medical stone removal basket according to claim 4, wherein the process comprises the following steps of: the metal tube (13) is a circular sleeve, and a metal tube notch (1303) is arranged on the metal tube (13).
7. The process for manufacturing the medical stone removal basket according to claim 6, wherein the process comprises the following steps of: the specific steps for manufacturing the knotted basket wires in the first step are as follows:
s11: preparing a nickel-titanium alloy wire, a mandrel and a basket wire clamp (12), placing the nickel-titanium alloy wire in a wire groove (120201) and placing the mandrel in a mandrel groove (120202);
s12: turning over two ends (102) of the nickel-titanium alloy wire (1) around the mandrel (1201) towards the other end (101) to a wire slot (120201) for re-attaching the wire, and pulling the traction nickel-titanium alloy wire towards two sides to form a knotting position (104);
s13: fixing the nickel-titanium alloy wire (1) and the clamp (12), and then putting the nickel-titanium alloy wire and the clamp into a heat treatment furnace for heat treatment;
s14: after cooling, the mandrel (1201) is pulled out, the nickel-titanium alloy wire (1) is taken off from the basket wire clamp (12), and the knotting position (104) formed by the knotted and formed nickel-titanium alloy wire (103) is formed.
8. The process for manufacturing the medical stone removal basket according to claim 7, wherein the process comprises the following steps of: step two, the above-mentioned step two: the specific steps of the basket head are as follows:
s211: taking two formed nickel-titanium alloy wires (103) to be assembled into a crisscrossed shape in a penetrating way, and keeping the nickel-titanium alloy wires at the knotting position (104) from being split;
s212: putting the nickel-titanium alloy wire (103) which is cross-connected and assembled into a shaping clamp (14) for heat treatment, and taking out and cooling;
s213: sleeving a metal tube (13) on the nickel-titanium alloy wire (103), initially fixing the nickel-titanium alloy wire (103), the guide rope (5) and the metal tube (13) in a metal tube notch (1303) by using glue, and crimping the metal tube (13);
s214: excess nitinol wires (103) are sheared neatly from the end face (1305) of the metal tube (13).
9. The process for manufacturing the medical stone removal basket according to claim 8, wherein the process comprises the following steps of: the above step S214 is modified as: excess nitinol wires (103) are trimmed from the end face (1305) of the metal tube and brazed (1306) to the end face (1305) of the metal tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311756609.7A CN117737626A (en) | 2023-12-20 | 2023-12-20 | Manufacturing process of medical stone-taking basket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311756609.7A CN117737626A (en) | 2023-12-20 | 2023-12-20 | Manufacturing process of medical stone-taking basket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117737626A true CN117737626A (en) | 2024-03-22 |
Family
ID=90258809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311756609.7A Pending CN117737626A (en) | 2023-12-20 | 2023-12-20 | Manufacturing process of medical stone-taking basket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117737626A (en) |
-
2023
- 2023-12-20 CN CN202311756609.7A patent/CN117737626A/en active Pending
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