Composite guide wire twisting device and manufacturing method

Abstract

The application discloses a composite guide wire twisting equipment and a manufacturing method, and relates to the technical field of twisting equipment.The composite guide wire twisting equipment comprises a twisting mechanism and a braiding mechanism.The second twisting disc of the twisting mechanism rotates to drive the second yarn dispenser to perform circular motion, so that the braiding yarn released by the second yarn dispenser is twisted into a first wire.The first twisting disc of the twisting mechanism drives the first yarn dispenser to rotate, so that the braiding yarn released by the first yarn dispenser is twisted into a second wire.The second wire twisted by the first yarn dispenser is wrapped outside the first wire.The yarn spindle assembly of the braiding mechanism comprises a yarn spindle and a spindle seat.The spindle seat drives the yarn spindle to rotate, so that the braiding yarn released by the yarn spindle is twisted into a third wire.The third wire twisted by the yarn spindle is wrapped outside the second wire to form a composite guide wire.The equipment replaces manual winding, realizes automatic production, and solves the problems of low efficiency, time-consuming and laborious, large product differentiation, pollution of the wound product and influence on product quality of manual winding of the composite guide wire.

Description

Technical Field

[0001] This invention relates to the field of twisting and braiding equipment technology, specifically to a composite guide wire twisting and braiding equipment and its manufacturing method. Background Technology

[0002] Medical composite guidewires are instruments specifically designed for interventional medical procedures to guide other medical devices (such as catheters and stents) into the body, helping doctors precisely place the devices at the lesion site or in the tissue. Medical composite guidewires typically consist of a core, an insulating layer, and an outer layer. The core is usually made of stainless steel or nickel-titanium alloy, providing necessary rigidity and support; the insulating layer protects the core from damage during operation; and the outer layer is usually made of polymer materials to increase the guidewire's flexibility and abrasion resistance.

[0003] Currently, existing technologies for manufacturing medical composite guidewires require extensive manual winding. However, this manual process necessitates collaboration among multiple people, resulting in low efficiency, high time and labor costs, significant product variation, and easy contamination, severely impacting product quality. Furthermore, because medical composite guidewires are used in interventional medical devices, existing composite guidewires are prone to bending and deformation during access procedures, affecting the surgical process. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a composite guide wire twisting and braiding device and manufacturing method. This not only solves the problems of low efficiency, time-consuming and labor-intensive operation, large product variability, product contamination, and impact on product quality caused by manual winding of composite guide wires in the prior art, but also solves the problem of easy bending and deformation of composite guide wires during use.

[0005] This invention provides a composite guide wire twisting and braiding device, comprising: The twisting mechanism includes a first twisting disc assembly and a second twisting disc assembly; The second twisting disc assembly includes a second twisting disc and a second yarn feeder. The second yarn feeder is connected to the second twisting disc. The second twisting disc can rotate and drive the second yarn feeder to make a circular motion, so that the braiding yarn released by the second yarn feeder is twisted into the first yarn. The first twisting disc assembly includes a first twisting disc and a first yarn feeder. The first yarn feeder is connected to the first twisting disc. The first twisting disc drives the first yarn feeder to rotate, causing the braided yarn released by the first yarn feeder to be twisted into a second yarn. A plurality of first twisting disc assemblies are arranged around the first yarn, so that the second yarn twisted by the plurality of first yarn feeders covers the outside of the first yarn. A weaving mechanism includes a yarn-carrying spindle assembly, which includes a yarn-carrying spindle and a spindle base. The spindle base is rotatable, and the yarn-carrying spindle is connected to the spindle base. The spindle base drives the yarn-carrying spindle to rotate, so that the weaving yarn released by the yarn-carrying spindle is woven into a third filament. Multiple yarn-carrying spindle assemblies are arranged around a second filament, so that the third filament woven by the multiple yarn-carrying spindles covers the outside of the second filament, forming a composite guide yarn.

[0006] In some embodiments, the twisting mechanism further includes a guide disc, which includes a shaft and a support. The shaft is a hollow shaft through which the first yarn passes. The support has a through hole through which the second yarn passes. A plurality of first twisting disc assemblies are evenly distributed on the outside of the guide disc, so that the second yarn covers the outside of the first yarn. The center of the second twisting disc is concentric with the center of the shaft.

[0007] In some embodiments, the weaving mechanism includes a core tube with a cavity inside, the first filament and the second filament passing through the core tube, and the yarn-carrying spindle assembly surrounding the outside of the core tube, such that the third filament woven by the yarn-carrying spindle assembly covers the outside of the second filament, forming the composite guide yarn.

[0008] In some embodiments, the twisting mechanism further includes a second power motor, a second motor gear, and a median gear. The second power motor is connected to the second motor gear, and the median gear is located between the second motor gear and the first twisting disc assembly. The median gear meshes with the second motor gear and the first twisting disc assembly respectively, and the second power motor provides power to the first twisting disc assembly. The first torsion disc assembly includes a torsion disc shaft, a spacer, a retaining ring, a third bearing, a stop sleeve, a fourth bearing, a torsion gear, a pressure plate, and a pressure plate bolt. The torsion gear has a through hole in its center, and the fourth bearing, the stop sleeve, the third bearing, and the retaining ring are sequentially installed in the hole in the center of the torsion gear. The retaining ring abuts against the third bearing. The spacer and the torsion gear are sleeved on the outer periphery of the torsion disc shaft. The pressure plate and the pressure plate bolt are fixedly connected to the top end of the torsion disc shaft. The pressure plate abuts against the fourth bearing, so that the torsion gear is connected to the torsion disc shaft and rotates around the torsion disc shaft. The torsion gear surrounds the outside of the guide disc, the first torsion disc is connected to the torsion gear, and the intermediate gear meshes with the torsion gear; the second power motor drives the second motor gear to rotate, and in turn drives the intermediate gear and the torsion gear to rotate, thereby driving the first torsion disc to rotate.

[0009] In some embodiments, the weaving mechanism further includes a base plate, a guide plate, a first power motor, a first motor gear, and a dial gear assembly. The base plate and the guide plate are each provided with a plurality of circular holes for mounting the dial gear assembly. The outer side of the circular holes of the guide plate is provided with a circular groove. The yarn-carrying spindle assembly abuts against the guide plate. The first power motor is connected to the first motor gear, and the first motor gear meshes with the dial gear assembly. The dial gear assembly is provided with a dial gear and a dial plate. The dial gear is connected to the dial plate, the spindle seat is connected to the dial plate, and the dial gear meshes with the first motor gear. The first power motor drives the first motor gear to rotate, and in turn drives the dial gear and the dial plate to rotate, so that the spindle seat moves circumferentially and the braiding yarns released by the two yarn-carrying spindles distributed on the adjacent dial plates cross each other. The yarn-carrying spindle assembly also includes a guide head, which is connected to the spindle base. The side of the guide head away from the spindle base abuts against the guide disk, and the guide head rotates in the circular groove of the guide disk driven by the spindle base.

[0010] In some embodiments, a plurality of dial gears and a plurality of dials surround the core tube with the core tube as the center, and the plurality of dial gears mesh with each other; the plurality of dial gears rotate, driving the plurality of dials to rotate, the plurality of dials driving a plurality of yarn-carrying spindles to perform circumferential motion, and the plurality of guide heads rotate in the guide disk, so that the braided yarns released by the plurality of yarn-carrying spindles intersect to form the third filament, and cover the outside of the second filament.

[0011] In some embodiments, a traction mechanism is also included, the center of which is concentric with the center of the core tube; The traction mechanism includes a guide shaft seat, a forward and reverse lead screw, an upper pressure roller assembly, a lower pressure roller assembly, and a limiting bracket; the guide shaft seat is located on both sides of the forward and reverse lead screw, the upper pressure roller assembly and the lower pressure roller assembly are arranged opposite to each other and sleeved on the outside of the forward and reverse lead screw and the guide shaft seat, the guide shaft seat provides guidance for the upper pressure roller assembly and the lower pressure roller assembly, and the forward and reverse lead screw drives the upper pressure roller assembly and the lower pressure roller assembly to move; The limiting bracket has through holes on both sides, and the central axis of the through holes on both sides of the limiting bracket is on the same line as the surfaces of the upper pressure roller assembly and the lower pressure roller assembly that are in closed contact.

[0012] In some embodiments, a take-up mechanism is further included for taking up the composite guidewire; The take-up mechanism includes a fourth motor, a power motor shaft, a power wheel, a power belt, a wire guide wheel, a wire guide, and a spool. The power wheel is connected to the power motor shaft, and the wire guide is connected to the wire guide wheel. The power belt is sleeved on the outside of the power wheel and the wire guide wheel, enabling the power motor shaft to drive the wire guide to rotate. The spool is connected to the fourth motor via the power motor shaft. The composite guide wire is wound onto the spool. The rotational speed of the spool is controlled by controlling the torque output of the fourth motor to achieve constant tension winding.

[0013] In some embodiments, the device further includes a frame, which is provided with a threading die, a centering wheel, a guide wheel, and a lead wheel, wherein the threading die is concentric with the center of the twisting mechanism.

[0014] A method for twisting and braiding a composite guidewire, the method comprising: The first filament twisted by the second twisting disc assembly is pulled out from the guide disc to the lower part of the threading plate die opening; The second filament twisted by the first twisting disc assembly is pulled out from the guide disc to the lower part of the threading plate die; The first and second wires at the lower part of the threading plate die are threaded into the core tube of the braiding mechanism and pulled out from the other side into the traction mechanism; The third filament woven by the yarn-carrying spindle assembly on the weaving mechanism is pulled out into the traction mechanism; The composite guide yarn twisting and knitting device starts working, and the second yarn twisted by the first twisting disc assembly covers the outside of the first yarn twisted by the second twisting disc assembly, and the third yarn woven by the yarn-carrying spindle assembly covers the outside of the second yarn, forming the composite guide yarn; The composite guide wire is pulled from the traction mechanism to the take-up mechanism for winding and coiling.

[0015] The beneficial effects of this invention are: This invention provides a composite guide yarn twisting and braiding device, which is jointly operated by a frame, a braiding mechanism, a twisting mechanism, a traction mechanism, and a take-up mechanism. The twisting mechanism includes a second twisting disc assembly, a first twisting disc assembly, and a guide yarn disc. The braiding mechanism includes a yarn-carrying spindle assembly and a core tube. The first yarn twisted by the second twisting disc assembly passes through the guide yarn disc and is covered by the second yarn twisted by the first twisting disc assembly. The first and second yarns pass through the core tube and are pulled to the traction mechanism for clamping. The third yarn woven by the yarn-carrying spindle assembly covers the outside of the second yarn, forming a composite guide yarn, which passes through the traction mechanism and is pulled to the take-up mechanism for winding. This device replaces manual winding, achieving automated production and solving the problems of low efficiency, time-consuming and labor-intensive manual winding of composite guide yarns, large product variations, product contamination, and impact on product quality.

[0016] In this composite guide wire twisting and braiding device, multiple yarn-carrying spindles in the braiding mechanism move in a figure-eight pattern along the guide rail in both directions within the guide plate of the braiding mechanism, forming a diamond-shaped mesh tube braiding structure. This structure can improve the strength, toughness, and multi-directional bending resistance of the guide wire, solving the problem of easy bending and deformation of the guide wire during surgery in existing technologies.

[0017] The clamping center of the traction mechanism of the composite guide wire twisting and braiding equipment is concentric with the center of the braiding mechanism, which helps to prevent the guide wire from bending during the manufacturing process and from deforming the composite guide wire, thereby improving the quality of the product. Attached Figure Description

[0018] Figure 1 This is a front view of the composite guide wire twisting device provided in an embodiment of the present invention; Figure 2 This is a perspective view of the composite guide wire twisting device provided in an embodiment of the present invention; Figure 3 This is a perspective view of the frame of the composite guide wire twisting and braiding equipment provided in an embodiment of the present invention; Figure 4 This is a perspective view of the braiding mechanism of the composite guide yarn twisting device provided in an embodiment of the present invention; Figure 5 This is an exploded view of the braiding mechanism of the composite guide yarn twisting device provided in an embodiment of the present invention; Figure 6 This is a perspective view of the gear transmission of the braiding mechanism in the composite guide yarn twisting device provided in an embodiment of the present invention; Figure 7 This is an exploded view of the dial gear assembly of the braiding mechanism of the composite guide yarn twisting device provided in an embodiment of the present invention; Figure 8 This is an exploded view of the yarn-carrying spindle of the composite guide yarn twisting device provided in an embodiment of the present invention; Figure 9 This is a perspective view of the twisting mechanism of the composite guide yarn twisting device provided in an embodiment of the present invention; Figure 10 This is an exploded view of the twisting mechanism of the composite guide yarn twisting device provided in an embodiment of the present invention; Figure 11 A perspective view of the gear transmission of the twisting mechanism in the composite guide yarn twisting device provided in an embodiment of the present invention; Figure 12 This is an exploded view of the first twisting disc assembly of the twisting mechanism of the composite guide yarn twisting device provided in an embodiment of the present invention; Figure 13 This is a perspective view of the second twisting disc assembly of the twisting mechanism of the composite guide yarn twisting device provided in an embodiment of the present invention; Figure 14This is an exploded view of the second twisting disc assembly of the twisting mechanism of the composite guide yarn twisting device provided in an embodiment of the present invention; Figure 15 This is a perspective view of the traction mechanism of the composite guide wire twisting device provided in an embodiment of the present invention; Figure 16 This is an exploded view of the traction mechanism of the composite guide wire twisting device provided in an embodiment of the present invention; Figure 17 This is a perspective view of the take-up mechanism of the composite guide wire twisting device provided in an embodiment of the present invention; Figure 18 This is a schematic diagram of the twisted product produced by the composite guide wire twisting equipment provided in an embodiment of the present invention; Figure 19 This is a cross-sectional view of the composite guide wire twisting device for twisting products provided in an embodiment of the present invention.

[0019] In the diagram: 1. Frame; 2. Weaving mechanism; 3. Twisting mechanism; 4. Traction mechanism; 5. Take-up mechanism; 6. Composite guide yarn.

[0020] 11. Threading plate die opening; 12. Centering wheel; 13. Guide wheel; 14. Outgoing guide wheel.

[0021] 21. Base plate; 22. Guide plate; 23. First motor; 24. First motor gear; 25. Dial gear assembly; 251. Mandrel; 252. Washer; 253. First bearing; 254. Dial gear; 255. Dial; 256. Second bearing; 257. Pressure sleeve; 258. Locking nut; 259. Fixing nut; 26. Yarn-carrying spindle assembly; 261. Yarn-carrying spindle; 262. Spindle holder; 263. Guide head; 27. Center flange; 28. Core tube.

[0022] 31. Lower plate; 32. Motor mounting plate; 33. Second motor; 34. Second motor gear; 35. Intermediate gear; 36. First torsion disc assembly; 361. Torsion disc shaft; 362. Spacer; 363. Snap ring; 364. Third bearing; 365. Stop sleeve; 366. Fourth bearing; 367. Torsion gear; 368. Pressure plate; 369. Pressure plate bolt; 3610. First torsion disc; 3611. First wire feeder; 3612. Fixing bolt; 37. Wire guide disc; 371. Shaft; 372. Bracket; 38. Center sleeve; 39. Second torsion disc assembly; 391. First motor bracket; 392. Third motor; 393. Second torsion disc; 394. Second wire feeder.

[0023] 41. Fixing plate; 42. Guide shaft seat; 43. Positive and negative lead screws; 44. Motor seat; 45. Opening and closing motor; 46. Upper pressure roller assembly; 47. Lower pressure roller assembly; 48. Lead screw bearing seat; 49. Limit bracket.

[0024] 51. Fourth motor; 52. Power motor shaft; 53. Power wheel; 54. Power belt; 55. Cable guide wheel; 56. Cable guide; 57. Take-up base plate; 58. Second motor bracket; 59. Top bracket; 510. Cable reel top shaft; 511. Cable reel; 512. Detection switch.

[0025] 61. First thread; 62. Second thread; 63. Third thread. Detailed Implementation

[0026] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0028] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0029] like Figure 1 and Figure 2As shown, this invention provides a composite guide yarn twisting and braiding device, which includes a frame 1, a braiding mechanism 2, a twisting and weaving mechanism 3, a traction mechanism 4, and a take-up mechanism 5. The braiding mechanism 2, twisting and weaving mechanism 3, traction mechanism 4, and take-up mechanism 5 are fixed on the frame 1. The twisting and weaving mechanism 3 is installed on one side of the braiding mechanism 2, and the traction mechanism 4 is fixed on the side of the braiding mechanism 2 away from the twisting and weaving mechanism 3. The clamping center of the traction mechanism 4 is concentric with the center of the braiding mechanism 2, which helps prevent the guide yarn from bending during the manufacturing process and from deforming during traction. The traction mechanism 4 can control the twisting and weaving speed and adjust the pitch of the twisted yarn. The take-up mechanism 5 is fixed at the end of the traction mechanism 4 away from the braiding mechanism 2 and is used to wind and coil the twisted and braided product.

[0030] like Figure 3 As shown, in some embodiments, the frame 1 includes a threading die 11, a centering wheel 12, a guide wheel 13, and a lead-out guide wheel 14. The threading die 11 is fixed to the frame. Preferably, the threading die 11 is concentric with the center of the twisting mechanism 3 to prevent the guide yarn from twisting. The centering wheel 12 and the guide wheel 13 are then installed sequentially on the frame, located between the twisting mechanism 3 and the braiding mechanism 2. The lead-out guide wheel 14 is installed on the side of the frame 1 near the take-up mechanism 5. The lead-out guide wheel 14 is located between the traction mechanism 4 and the take-up mechanism 5 and is used to guide the yarn bundle pulled out by the traction mechanism. The first filament 61 and the second filament 62 twisted by the twisting mechanism 3 pass through the threading plate die 11 in sequence, are wound around the centering wheel 12, and then pass through the guide wheel 13. They are pulled out from the center of the braiding mechanism 2 and clamped in the traction mechanism 4. The composite guide filament 6 pulled out from the traction mechanism 4 passes through the exit guide wheel 14 and enters the take-up mechanism 5 for winding and coiling.

[0031] like Figures 4 to 8As shown, in some embodiments, the weaving mechanism 2 includes a base plate 21, a guide plate 22, a first motor 23, a first motor gear 24, a dial gear assembly 25, a yarn-carrying spindle assembly 26, a central flange 27, and a core tube 28. The base plate 21 is fixedly connected to the frame 1 and has multiple circumferentially evenly distributed holes. The guide plate 22 is installed on one side of the base plate 21 and also has multiple circumferentially evenly distributed holes. During installation, the multiple circumferentially evenly distributed holes on the guide plate 22 must be aligned with the multiple circumferentially evenly distributed holes on the base plate 21. The first motor 23 is located on the side of the base plate 21 away from the guide plate 22 and provides power to the weaving mechanism 2. The first motor gear 24 is located on the side of the first motor 23 close to the base plate 21 and is fixedly connected to the first motor 23, used to transmit the power provided by the first motor 23. Multiple dial gear assemblies 25 are inserted into multiple circumferentially evenly distributed holes on the base plate 21 and guide plate 22, and are connected to the base plate 21 and guide plate 22. The end of the dial gear assembly 25 facing away from the base plate 21 is connected to the yarn-carrying spindle assembly 26, providing power for the rotation of the yarn-carrying spindle assembly 26.

[0032] Furthermore, in some embodiments, the guide disk 22 is also provided with multiple sets of guide rails. The guide rails are circular grooves located outside multiple evenly distributed holes on the guide disk 22. The guide rails are combined in pairs to form an "8" shaped guide rail structure. The yarn-carrying spindle assembly 26 is located on the side of the guide disk 22 away from the base disk 21. Multiple yarn-carrying spindle assemblies 26 are connected to the dial gear assembly 25, and their bottoms abut against the guide rails of the guide disk 22. The first motor 23 provides power, causing the first motor gear 24 to drive the dial gear assembly 25 to rotate, which in turn drives the yarn-carrying spindle assembly 26 to rotate in the guide rail of the guide plate 22. This causes the two closest yarn-carrying spindle assemblies 26 distributed on adjacent dial gears 255 to move in a figure-eight pattern in opposite directions in the guide rail of the guide plate 22, causing the weaving yarn released by the yarn-carrying spindle 261 to intersect, thus forming the third filament 63. The third filament 63 has a diamond-shaped mesh tube weaving structure. The diamond-shaped mesh tube weaving structure can improve the strength of the guide yarn, change the disadvantage of multiple square bends of the guide yarn, increase the toughness of the guide yarn, and improve the bending resistance of the guide yarn in multiple directions. The central flange 27 is a cylindrical structure with a through hole in the center, connected to the base plate 21 and inserted into the hole of the base plate 21. The core tube 28 is a hollow tube and installed in the through hole of the central flange 27. The first filament 61 and the second filament 62 formed by the twisting weaving mechanism 3 pass through the core tube 28 and pass through the weaving mechanism 2.

[0033] Furthermore, such as Figure 7As shown, in some embodiments, the dial gear assembly 25 includes a spindle 251, a washer 252, a first bearing 253, a dial gear 254, a dial 255, a second bearing 256, a pressure sleeve 257, a locking nut 258, and a fixing nut 259. The dial gear 254 has a through hole at its center, and the first bearing 253 is installed in the through hole of the dial gear 254. The washer 252 and the dial gear 254 with the first bearing 253 are sequentially fitted onto the outer periphery of the spindle 251. The dial 255 also has a through hole at its center, and the second bearing 256 is installed in the through hole of the dial 255. The dial 255 with the second bearing 256 is fitted onto the outer periphery of the spindle 251 and connected to the dial gear 254, such that the groove of the dial gear 254 abuts against the key of the dial 255. A pressure sleeve 257 is located at the end of the dial 255 opposite to the dial gear 254. The pressure sleeve 257 is fitted around the outer periphery of the spindle 251 and abuts against the second bearing 256. A locking nut 258 is also fitted around the outside of the spindle 251, located on the side of the pressure sleeve 257 opposite to the dial 255, and abuts against the pressure sleeve 257. The pressure sleeve 257 and the locking nut 258 lock the dial 255, preventing the dial 255 from moving along the axis of the spindle 251. A fixing nut 259 is fitted around one end of the spindle 251, located on the side of the dial gear 254 opposite to the dial 255. The fixing nut 259 fixes the dial gear assembly 25 to the base plate 21. During the assembly process, when installing the guide plate 22, the dial 255 on the dial gear assembly 25 must first be removed. Align the multiple circumferentially distributed holes on the guide plate 22 with the multiple circumferentially distributed holes on the base plate 21 to connect the guide plate 22 with the base plate 21. Finally, the dial 255 is fitted onto the spindle 251 and abuts against the dial gear 254. The pressure sleeve 257 and the locking nut 258 are used to lock it in place.

[0034] Furthermore, in this embodiment, the dial gear 254 meshes with the first motor gear 24, the first motor 23 drives the first motor gear 24 to rotate, the first motor gear 24 drives the dial gear 254 to rotate, thereby causing the dial 255 to rotate. Multiple dial gears 254 and multiple dials 255 are evenly distributed around the core tube 28, with the core tube 28 as the center. The multiple dial gears 254 mesh with each other; the multiple dial gears 254 rotate under the drive of the first motor gear 24, driving the multiple dials 255 to rotate, and the multiple dials 255 drive multiple sets of yarn-carrying spindle assemblies 26 to perform circular motion. The braided yarns released by the multiple sets of yarn-carrying spindle assemblies 261 intersect to form a third filament 63, which covers the outside of the second filament 62.

[0035] Furthermore, such as Figure 8As shown, in some embodiments, the yarn-carrying spindle assembly 26 includes a yarn-carrying spindle 261, a spindle base 262, and guide heads 263. The yarn-carrying spindle 261 is mounted on the spindle base 262, and two guide heads 263 are installed in two holes in the spindle base 262. The side of the guide head 263 facing away from the spindle base 262 is connected to the guide rail of the guide disk 22. The spindle base 262 is connected to the dial 255. The rotation of the dial 255 drives the spindle base 262 to rotate, thereby allowing the yarn-carrying spindle 261 to rotate freely within the guide rail of the guide disk 22. This causes the braiding yarns released by two yarn-carrying spindles 261 distributed on adjacent dials 255 to intersect, and the braiding yarns released by multiple yarn-carrying spindles 261 intersect to form a third filament 63, which covers the outside of the second filament 62.

[0036] Specifically, in this embodiment, there are 8 dial gear assemblies 25 and 16 yarn-carrying spindle assemblies 26. Specifically, the number of dial gear assemblies 25 is at least 2N and the number of yarn-carrying spindle assemblies 26 is at least 4N, where N should be greater than or equal to 2, so as to ensure that the third yarn 63 woven by the weaving mechanism 2 covers the second yarn 62.

[0037] like Figures 9 to 11 As shown, in some embodiments, the twisting mechanism 3 includes a lower plate 31, a motor fixing plate 32, a second motor 33, a second motor gear 34, a median gear 35, a first twisting plate assembly 36, a guide plate 37, a center sleeve 38, and a second twisting plate assembly 39. The lower plate 31 is provided with a plurality of circumferentially distributed holes. The motor fixing plate 32 is located on one side of the lower plate 31 and is also provided with a plurality of circumferentially distributed holes, the center of which is aligned with the center of the hole on the lower plate 31. The second motor 33 is located on the side of the motor fixing plate 32 opposite to the lower plate 31, and the second motor gear 34 is located between the second motor 33 and the motor fixing plate 32. The central sleeve 38 is fixedly connected to the hole in the lower plate 31. The guide plate 37 is fixed inside the central sleeve 38. The guide plate 37 includes a shaft 371 and a bracket 372. The center of the shaft has a hollow structure to facilitate the passage of the first filament 61 twisted by the second twisting plate assembly 39 through the guide plate 37. The bracket 372 is located at the end of the guide plate 37 opposite to the first twisting plate assembly 36. The bracket 372 has an umbrella-shaped structure with multiple branches. Each branch has a round hole for the second filament 62 twisted by the first twisting plate assembly 36 to pass through, so that the second filament 62 covers the outside of the first filament 61. Multiple first twisting plate assemblies 36 are provided. The first twisting plate assemblies 36 are connected to multiple circumferentially distributed holes on the motor fixing plate 32 and multiple circumferentially distributed holes on the lower plate 31. The intermediate gear 35 is located between the second motor gear 34 and the first torsion disc assembly 36. Multiple intermediate gears 35 are provided, and they respectively abut against the second motor gear 34 and the first torsion disc assembly 36 to solve the problem that multiple first torsion disc assemblies cannot mesh with each other. The second torsion disc assembly 39 is located below the lower plate 31 and is fixedly connected to the frame 1.

[0038] Furthermore, such as Figure 12 As shown, in some embodiments, the first torsion disc assembly 36 includes a torsion disc shaft 361, a spacer 362, a retaining ring 363, a third bearing 364, a retaining sleeve 365, a fourth bearing 366, a torsion gear 367, a pressure plate 368, a pressure plate bolt 369, a first torsion disc 3610, a first wire feeder 3611, and a fixing bolt 3612. The torsion gear 367 has a through hole at its center. The fourth bearing 366, the retaining sleeve 365, and the third bearing 364 are sequentially installed in the center hole of the torsion gear 367. The retaining ring 363 is installed in the annular groove of the torsion gear 367 to restrict the movement of the third bearing 364. The spacer 362 and the center of the torsion gear 367 are then fitted around the outer periphery of the torsion disc shaft 361. The pressure plate 368 and the pressure plate bolt 369 are fixedly connected to the top end of the torsion disc shaft 361 to press the fourth bearing 366 and prevent the torsion gear 367 from moving along the axial direction of the torsion disc shaft 361. Finally, the first torsion disc 3610 is fixed to the torsion gear 367 with fixing bolts 3612, and then multiple first yarn feeders 3611 are evenly installed on the first torsion disc 3610 to form the first torsion disc assembly 36. The first torsion disc 3610 drives the first yarn feeders 3611 to rotate, so that the braiding yarn released by the first yarn feeders 3611 is twisted into the second yarn 62.

[0039] Specifically, in this embodiment, multiple torsion gears 367 are circumferentially distributed around the guide plate 37, causing the second wire 62 to cover the first wire 61. The multiple torsion gears 367 cannot mesh with each other; therefore, multiple intermediate gears 35 are installed between the multiple torsion gears 367, causing the torsion gears 367 and intermediate gears 35 to mesh together, allowing the multiple torsion gears 367 to rotate in the same direction. A second motor 33, equipped with a second motor gear 34, is then mounted on the motor mounting plate 32, causing the second motor gear 34 to mesh with the intermediate gears 35, providing power to the multiple first torsion disc assemblies 36.

[0040] Furthermore, such as Figure 13 and Figure 14As shown, in some embodiments, the second twisting disc assembly 39 includes a first motor bracket 391, a third motor 392, a second twisting disc 393, and a second yarn feeder 394. The first motor bracket 391 is fixedly connected to the frame 1, the third motor 392 is fixedly connected to the first motor bracket 391, and the second twisting disc 393 is fixedly connected to the output shaft of the third motor 392. The third motor 392 provides power to the second twisting disc 393, causing it to rotate, thus twisting the braiding yarn released by the second yarn feeder 394 into the first filament 61. Multiple second yarn feeders 394 are connected to the second twisting disc 393, and the number of second yarn feeders 394 is adapted to the number of yarn bundles to be twisted. Preferably, the center of the second twisting disc 393 coincides with the center of the guide disc 37 to prevent the yarn bundle from twisting and ensure that the first filament 61 twisted by the second twisting disc assembly 39 smoothly enters the guide disc 37. If the centers do not coincide, the yarn bundle will rub against the tube wall of the guide disc 37, causing damage to the yarn bundle. When the second motor 33 is working, it will drive multiple first twisting disc assemblies 36 to rotate in the same direction. Multiple threads on each assembly are twisted together to form a second thread 62. At the same time, the second twisting disc assembly 39 is started, and multiple threads on its second twisting disc 393 are also twisted together to form a first thread 61. The first thread 61 of the second twisting disc assembly 39 passes through the central hole of the guide disc 37, and the second thread 62 on the first twisting disc assembly 36 passes through other round holes on the guide disc 37. Finally, they come together and pass through the center of the threading plate die 11, and enter the braiding mechanism 2 through the centering thread wheel 12 and the guide wheel 13. In this way, the twisting and weaving mechanism 3 completes its work.

[0041] Specifically, in this embodiment, there is one second twisting disc assembly 39, two second yarn feeders 394, eight first twisting disc assemblies 36, and sixteen first yarn feeders 3611. Specifically, there is at least one second twisting disc assembly 39, at least one first twisting disc assembly 36, and at least two first yarn feeders 3611 and two second yarn feeders 394.

[0042] like Figure 15 and Figure 16As shown, in some embodiments, the traction mechanism 4 includes a fixed plate 41, guide shaft seats 42, positive and negative lead screws 43, a motor seat 44, an opening and closing motor 45, an upper pressure wheel assembly 46, a lower pressure wheel assembly 47, a lead screw bearing seat 48, and a limiting bracket 49. There are two guide shaft seats 42, installed on one side of the fixed plate 41. The positive and negative lead screws 43 are located between the two guide shaft seats 42. The lower pressure wheel assembly 47 is installed on the two guide shaft seats 42 and connected to the positive and negative lead screws 43. The upper pressure wheel assembly 46 is located on the side of the lower pressure wheel assembly 47 away from the fixed plate 41 and is connected to both guide shaft seats 42 and the positive and negative lead screws 43. The lead screw bearing seat 48 is located on the side of the upper pressure wheel assembly 46 away from the lower pressure wheel assembly 47 and is connected to both guide shaft seats 42. The upper end of the positive and negative lead screws 43 is connected to the lead screw bearing seat 48, and a bearing is provided at the connection point, allowing the positive and negative lead screws 43 and the bearing seat 48 to be rotatably connected. The limiting bracket 49 has through holes on both sides for the braided yarn to pass through. The limiting bracket 49 is located on the side of the screw bearing seat 48 away from the upper pressure roller assembly 46. The center of the through holes on both sides of the limiting bracket 49 is on the same line as the closed contact surface of the upper pressure roller assembly 46 and the lower pressure roller assembly 47, ensuring that the yarn will not rub against the edge of the through holes and cause wear. The motor seat 44 is fixed to the side of the fixing plate 41 away from the lower pressure roller assembly 47, and the opening and closing motor 45 is fixed to the side of the motor seat 44 away from the fixing seat 41. The output shaft of the opening and closing motor 45 is connected to the positive and negative screws 43. When the opening and closing motor 45 is working, it drives the positive and negative screws 43 to rotate, causing the upper pressure roller assembly 46 and the lower pressure roller assembly 47 to move up and down in opposite directions, realizing the purpose of opening, closing or clamping of the traction mechanism 4.

[0043] like Figure 17As shown, in some embodiments, the take-up mechanism 5 includes a fourth motor 51, a power motor shaft 52, a power wheel 53, a power belt 54, a cable guide wheel 55, a cable guide 56, a take-up base plate 57, a second motor bracket 58, a top bracket 59, a spool top shaft 510, a spool 511, and a detection switch 512. The take-up base plate 57 is fixed to the frame 1, the second motor bracket 58 and the top bracket 59 are fixed to the take-up base plate 57, and the spool top shaft 510 is mounted on the top bracket 59. The fourth motor 51 is fixed to the second motor bracket 58, the power motor shaft 52 is connected to the fourth motor 51, and the power wheel 53 is located at the end of the fourth motor 51 away from the second motor bracket 58 and is connected to the power motor shaft 52. The spool 511 has a through hole in the middle, and its two ends are fixedly connected to the spool top shaft 510 and the power motor shaft 52, respectively. The power motor shaft 52 transmits power for the rotation of the spool 511. The cable guide 56 is fixedly connected to the frame 1, and detection switches 512 are installed on both sides of the cable guide 56 to detect the winding speed and provide feedback to the fourth motor 51. The fourth motor 51 adjusts the torque output of the motor based on the feedback information to control the rotation speed of the spool 511, thereby achieving constant tension winding. The cable guide wheel 55 is installed at one end of the cable guide 56, and the power belt 54 is sleeved on the outside of the power wheel 53 and the cable guide wheel 55. The power belt 54 is used to transmit power, transferring the power from the power wheel 53 to the cable guide wheel 55. When the fourth motor 51 is working, the power motor shaft 52 rotates and carries the spool 511 in a circular motion, while simultaneously driving the cable guide 56 to perform reciprocating cable winding motion. The detection switch 512 detects one layer of cable winding and sends a signal to control the fourth motor 51 to increase or decrease the output torque. This prevents the winding tension from being inconsistent due to different diameters of the spool 511 during winding, thus achieving constant tension winding.

[0044] Specifically, in this embodiment, such as Figure 18 The diagram shows a product produced by the composite guide yarn twisting and braiding equipment. On the left is the twisting mechanism 3 twisting the second yarn; on the right is the braiding mechanism 2 weaving the third yarn 63, which is fitted over the second yarn 62, ultimately forming the composite guide yarn 6. Figure 19 The diagram shows a cross-sectional view of the product twisted by the composite guide yarn twisting and braiding device. It consists of a first yarn 61, a second yarn 62, and a third yarn 63. The first yarn 61 is twisted by the second twisting disc assembly 39, and the second yarn 62 is twisted by the first twisting disc assembly 36 and covers the outside of the first yarn 61. The third yarn 63 is woven by the yarn-carrying spindle assembly 26 and is fitted over the outside of the second yarn 62, ultimately forming the composite guide yarn 6. This composite guide yarn 6 increases the toughness and multi-directional bending resistance of the guide yarn, overcoming the problem of twisting and deformation during use in existing technologies.

[0045] The specific steps for fabricating medical composite guidewires are as follows: Step 1: Pull the yarn on the second twisting disc assembly 39 from the center of the guide disc 37 to the lower part of the threading plate die 11. Pull the yarn on the first twisting disc assembly 36 from the hole in the guide disc 37 to the lower part of the threading plate die 11. Pass the yarn at the lower part of the threading plate die 11 through the threading plate die 11, through the centering wheel 12 and the guide wheel 13, and into the braiding mechanism 2. Pull the yarn out from the other side into the traction mechanism 4 and clamp it with the traction mechanism 4.

[0046] Step 2: Pull out the yarn from the braiding mechanism 2 and clamp it with the traction mechanism 4.

[0047] Step 3: The entire composite yarn guide twisting and weaving equipment starts working. The second twisting disc assembly 39 twists and weaves the first yarn 61, the first twisting disc assembly 36 twists and weaves the second yarn 62, the second yarn 62 covers the outside of the first yarn 61, and the yarn carrying spindle assembly 26 weaves the third yarn 63 and covers the outside of the second yarn 62.

[0048] Step 4: The twisted composite guide wire 6 pulled out by the traction mechanism 4 is wound onto the take-up mechanism 5 for winding and coiling.

[0049] Step 5: Cut the wound composite guide wire 6 into the required length and then put it into the setting equipment for heating and setting.

[0050] Step 6: After the composite guidewire 6 has been shaped, a PTFE film is coated on its surface.

[0051] The working principle of this invention is as follows: The composite guide yarn twisting and braiding device is completed through the cooperation of a frame 1, a braiding mechanism 2, a twisting and weaving mechanism 3, a traction mechanism 4, and a take-up mechanism 5. Multiple first twisting disc assemblies 36 are installed on the twisting and weaving mechanism 3, and a set of second twisting disc assemblies 39 are installed at the lower part of the twisting and weaving mechanism 3. A guide yarn disc 37 is also installed in the center for the first yarn 61 to be twisted through the second twisting disc assembly 39. Multiple yarn-carrying spindle assemblies 26 are installed on the braiding mechanism 2. The multiple yarn-carrying spindle assemblies 26 are combined in pairs and connected to the dial gear assembly 25. Their bottoms abut against the guide rail of the guide plate 22, driving two adjacent yarn-carrying spindle assemblies 26 distributed on different dial gears to move in a figure-eight pattern in the guide rail of the guide plate 22, thereby forming a crossover third yarn 63. The braiding mechanism 2 is also provided with a core tube 28 for twisting the first yarn 61 and the second yarn 62 through the twisting and weaving mechanism 3.

[0052] The yarns from multiple first yarn feeders 3611 on the multiple sets of first twisting disc assemblies 36 and multiple second yarn feeders 394 on the second twisting disc assembly 39 on the twisting mechanism 3 are pulled out and passed through the holes of the guide disc 37 respectively. They are then gathered together and passed through the center of the threading plate die 11, through the guide wheel 13 on the frame 1, and into the core tube 28 of the braiding mechanism 2. They are then pulled out from the core tube 28 and entered into the traction mechanism 4, where they are pressed by the upper pressure wheel assembly 46 and the lower pressure wheel assembly 47. The yarns from multiple yarn-carrying spindles 261 on the braiding mechanism 2 are then pulled out and entered into the traction mechanism 4, where they are pressed by the upper pressure wheel assembly 46 and the lower pressure wheel assembly 47. At the same time, the braiding mechanism 2, the twisting mechanism 3, the central twisting disc 39 assembly, the traction machine 4, and the take-up mechanism 5 are started. The multiple sets of first twisting disc assemblies 36 and second twisting disc assemblies 39 on the twisting mechanism 3 twist to form a second yarn 62 and a first yarn 61, with the second yarn 62 covering the outside of the first yarn 61. The braiding mechanism 2 braids multiple filament bundles into a third filament 63, which is then wrapped around the outside of the second filament 62 to form a composite guide filament 6. The traction mechanism 4 can control the speed and adjust the pitch of the twisted braiding. The take-up mechanism 5 coils up the twisted composite guide filament 6.

[0053] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A composite guide wire twisting device, characterized by, include: The twisting mechanism (3) includes a first twisting disc assembly (36) and a second twisting disc assembly (39). The second twisting disc assembly (39) includes a second twisting disc (393) and a second yarn feeder (394). The second yarn feeder (394) is connected to the second twisting disc (393). The second yarn feeder (394) is used to release the braided yarn. The second twisting disc (393) is configured to drive the second yarn feeder (394) to make circumferential movement by rotating, so that the braided yarn released by the second yarn feeder (394) is twisted into a first filament (61). The first twisting disc assembly (36) includes a first twisting disc (3610) and a first yarn feeder (3611). The first yarn feeder (3611) is connected to the first twisting disc (3610). The first twisting disc (3610) is configured to drive the first yarn feeder (3611) to rotate, so that the braided yarn released by the first yarn feeder (3611) is twisted into a second yarn (62). A plurality of the first twisting disc assemblies (36) are arranged around the first yarn (61), so that the second yarn (62) twisted by the plurality of the first yarn feeders (3611) covers the outside of the first yarn (61). The weaving mechanism (2) includes a yarn-carrying spindle assembly (26), which includes a yarn-carrying spindle (261) and a spindle base (262). The spindle base (262) is rotatable. The yarn-carrying spindle (261) is connected to the spindle base (262). The spindle base (262) is configured to drive the yarn-carrying spindle (261) to rotate, so that the weaving yarn released by the yarn-carrying spindle (261) is woven into a third filament (63). A plurality of yarn-carrying spindle assemblies (26) are arranged around the second filament (62), so that the third filament (63) woven by the plurality of yarn-carrying spindles (261) covers the outside of the second filament (62) to form a composite guide yarn (6).

2. The composite wire twisting apparatus of claim 1, wherein, The twisting mechanism (3) further includes a guide disc (37), which includes a shaft (371) and a bracket (372). The shaft (371) is a hollow shaft, through which the first yarn (61) passes. The bracket (372) has a through hole, through which the second yarn (62) passes. Multiple first twisting disc assemblies (36) surround the outside of the guide disc (37), so that the second yarn (62) covers the outside of the first yarn (61). The center of the second twisting disc (393) is concentric with the center of the shaft (371).

3. The composite guide wire twisting and braiding device according to claim 1, characterized in that, The weaving mechanism (2) includes a core tube (28) with a cavity inside. The first filament (61) and the second filament (62) pass through the core tube (28). The yarn-carrying spindle assembly (26) surrounds the outside of the core tube (28), so that the third filament (63) woven by the yarn-carrying spindle assembly (26) covers the outside of the second filament (62), forming the composite guide yarn (6).

4. The composite guide wire twisting and braiding device according to claim 2, characterized in that, The twisting mechanism (3) further includes a second power motor (33), a second motor gear (34), and a median gear (35). The second power motor (33) is connected to the second motor gear (34). The median gear (35) is located between the second motor gear (34) and the first twisting disc assembly (36). The median gear (35) meshes with the second motor gear (34) and the first twisting disc assembly (36) respectively. The second power motor (33) provides power to the first twisting disc assembly (36). The first torsion disc assembly (36) includes a torsion disc shaft (361), a spacer (362), a retaining ring (363), a third bearing (364), a retaining sleeve (365), a fourth bearing (366), a torsion gear (367), a pressure plate (368), and a pressure plate bolt (369). The torsion gear (367) has a through hole in its center, and the fourth bearing (366), the retaining sleeve (365), the third bearing (364), and the retaining ring are installed sequentially in the hole in the center of the torsion gear (367). (363), the snap ring (363) abuts against the third bearing (364); the spacer (362) and the torsion gear (367) are sleeved on the outer periphery of the torsion disc shaft (361); the pressure plate (368) and the pressure plate bolt (369) are fixedly connected to the top end of the torsion disc shaft (361); the pressure plate (368) abuts against the fourth bearing (366), so that the torsion gear (367) is connected to the torsion disc shaft (361) and rotates around the torsion disc shaft (361); The torsion gear (367) surrounds the outside of the guide disc (37), the first torsion disc (3610) is connected to the torsion gear (367), and the intermediate gear (35) meshes with the torsion gear (367); the second power motor (33) drives the second motor gear (34) to rotate, and sequentially drives the intermediate gear (35) and the torsion gear (367) to rotate, thereby driving the first torsion disc (3610) to rotate.

5. A composite guide wire twisting and braiding device according to claim 3, characterized in that, The weaving mechanism (2) further includes a base plate (21), a guide plate (22), a first power motor (23), a first motor gear (24), and a dial gear assembly (25). The base plate (21) and the guide plate (22) are each provided with multiple round holes for installing the dial gear assembly (25). The guide plate (22) has a circular groove on the outside of the round hole. The yarn-carrying spindle assembly (26) abuts against the guide plate (22). The first power motor (23) is connected to the first motor gear (24), and the first motor gear (24) meshes with the dial gear assembly (25). The dial gear assembly (25) is provided with a dial gear (254) and a dial (255). The dial gear (254) is connected to the dial (255). The spindle seat (262) is connected to the dial (255). The dial gear (254) meshes with the first motor gear (24). The first power motor (23) drives the first motor gear (24) to rotate, and sequentially drives the dial gear (254) and the dial (255) to rotate, so that the spindle seat (262) makes circumferential movement and causes the braided yarns released by the two yarn-carrying spindles (261) distributed on the adjacent dials (255) to cross each other. The yarn-carrying spindle assembly (26) also includes a guide head (263), which is connected to the spindle seat (262). The side of the guide head (263) away from the spindle seat (262) abuts against the guide disk (22). The guide head (263) rotates in the circular groove of the guide disk (22) driven by the spindle seat (262).

6. The composite guide wire twisting and braiding device according to claim 5, characterized in that, Multiple dial gears (254) and multiple dials (255) surround the core tube (28) with the core tube (28) as the center. The multiple dial gears (254) mesh with each other. The multiple dial gears (254) rotate, driving the multiple dials (255) to rotate. The multiple dials (255) drive multiple sets of yarn-carrying spindles (261) to make circular motion. The multiple guide heads (263) rotate in the guide plate (22), so that the braided yarn released by the multiple sets of yarn-carrying spindles (261) intersects to form the third filament (63) and covers the outside of the second filament (62).

7. A composite guide wire twisting and braiding device according to claim 6, characterized in that, It also includes a traction mechanism (4), the center of which is concentric with the center of the core tube (28); The traction mechanism (4) includes a guide shaft seat (42), a positive and negative lead screw (43), an upper pressure wheel assembly (46), a lower pressure wheel assembly (47), and a limiting bracket (49). The guide shaft seat (42) is located on both sides of the positive and negative lead screw (43). The upper pressure wheel assembly (46) and the lower pressure wheel assembly (47) are arranged opposite to each other and are sleeved on the outside of the positive and negative lead screw (43) and the guide shaft seat (42). The guide shaft seat (42) provides guidance for the upper pressure wheel assembly (46) and the lower pressure wheel assembly (47). The positive and negative lead screw (43) drives the upper pressure wheel assembly (46) and the lower pressure wheel assembly (47) to move. The limiting bracket (49) has through holes on both sides, and the central axis of the through holes on both sides of the limiting bracket (49) is on the same line as the surfaces of the upper pressure roller assembly (46) and the lower pressure roller assembly (47) that are in closed contact.

8. The composite guide wire twisting and braiding device according to claim 1, characterized in that, It also includes a take-up mechanism (5) for taking up the composite guide wire (6); The take-up mechanism (5) includes a fourth motor (51), a power motor shaft (52), a power wheel (53), a power belt (54), a wire guide wheel (55), a wire guide (56), and a spool (511). The power wheel (53) is connected to the power motor shaft (52), and the wire guide (56) is connected to the wire guide wheel (55). The power belt (54) is sleeved on the outside of the power wheel (53) and the wire guide wheel (55), so that the power motor shaft (52) can drive the wire guide (56) to rotate. The spool (511) is connected to the fourth motor (51) through the power motor shaft (52). The composite guide wire (6) is wound on the spool (511). The rotation speed of the spool (511) is controlled by controlling the torque output of the fourth motor (51), so as to achieve constant tension winding.

9. A composite guide wire twisting and braiding device according to claim 1, characterized in that, It also includes a frame (1), which is provided with a threading plate die (11), a centering wheel (12), a guide wheel (13) and a lead-out guide wheel (14). The threading plate die (11) is concentric with the center of the twisting mechanism (3).

10. A method for twisting and braiding composite guide wires, characterized in that, The composite guide wire twisting and braiding device according to any one of claims 1 to 9 is used, wherein the composite guide wire twisting and braiding method includes: The first filament (61) twisted by the second twisting disc assembly (39) is pulled out from the guide disc (37) to the lower part of the threading plate die (11); The second filament (62) twisted by the first twisting disc assembly (36) is pulled out from the guide disc (37) to the lower part of the threading plate die (11); The first wire (61) and the second wire (62) at the lower part of the threading plate die (11) are threaded into the core tube (28) of the braiding mechanism (2) and pulled out from the other side into the traction mechanism (4); The third filament (63) woven by the yarn-carrying spindle assembly (26) on the weaving mechanism (2) is pulled out into the traction mechanism (4); When the composite guide yarn twisting device starts working, the second yarn (62) twisted by the first twisting disc assembly (36) covers the outside of the first yarn (61) twisted by the second twisting disc assembly (39), and the third yarn (63) woven by the yarn-carrying spindle assembly (26) covers the outside of the second yarn (62), forming the composite guide yarn (6). The composite guide wire (6) is pulled from the traction mechanism (4) to the take-up mechanism (5) for winding.

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