Automatic wire winding platform for thrombus capturing support and application

Abstract

The invention relates to an automatic wire winding platform for a thrombus capturing support and application, and belongs to the technical field of medical instrument weaving. The wire winding mechanism and the rotary untwisting mechanism are constructed on the rack platform to work in cooperation with the left chuck and the right chuck on different rails in the same direction, automatic winding of the automatic wire winding platform is achieved, the defects of manual manufacturing in the prior art are overcome, pollution to woven products can be effectively avoided, manual errors are reduced, and the production efficiency is improved. The manufacturing efficiency is improved, the product quality is improved, when the linear motion module works, the wire winding mechanism is driven to move at a constant speed, the rotary untwisting mechanism and the wire winding mechanism rotate at the same time in the same direction, in this way, the wire winding mechanism can wind multiple strands of wires on the mandrel, the linear motion module, the wire winding mechanism and the rotary untwisting mechanism can work at the same time, and the production efficiency is improved. And a spiral bracket tail tip can be finally formed by utilizing the core shaft.

Description

Technical Field

[0001] The invention relates to an automatic wire winding platform for a thrombus capturing stent and application thereof, belonging to the technical field of medical device weaving. Background Art

[0002] During percutaneous coronary intervention, cerebrovascular intervention, peripheral vascular intervention and other surgical procedures, it is often necessary to use a stent specifically used for thrombus capture to effectively capture the thrombus, that is, to capture and remove the thrombus within the blood vessel to restore blood flow and prevent further complications.

[0003] At present, when most manufacturers manufacture stents for thrombus capture, a large amount of manual labor is required to wind the guide wire at the tail of the stent. In addition, the collaboration of multiple people is required to complete the winding of the stent, resulting in very low production efficiency. At the same time, the manually wound products vary greatly, which seriously affects the quality of the products.

[0004] Therefore, the disadvantages of using the existing traditional manual method to wind the thrombus capture stent are: when winding the product, manual operation of the wire winding part is required, which is easy to contaminate the woven product, and there are defects such as low cutting efficiency, time-consuming and labor-intensive, which seriously affects the product quality.

[0005] In the prior art, although there is a weaving machine platform and weaving method for weaving a medical thrombus capture stent as shown in CN112877900B, it mainly focuses on the weaving process of the thrombus stent, and does not involve the next winding process of the thrombus stent. The winding process refers to winding the multiple strands of wire reserved for the thrombus stent into the guide wire part. Summary of the invention

[0006] In order to solve the above problems, the present invention provides an automatic wire winding platform for a thrombus capture stent, comprising:

[0007] The frame includes a frame platform and a linear motion module, a linear rail, a left chuck and a wheel frame installed on the frame platform, wherein the left chuck is located on the left side of the linear motion module, two parallel linear rails are respectively arranged on both sides of the motion direction of the linear motion module, a right chuck is straddled on the two linear rails, the right chuck is connected to a cylinder and the cylinder drives the right chuck to slide on the two linear rails, and the wheel frame is arranged at the right end of the frame platform;

[0008] The wire winding mechanism is located on the right side of the left chuck, and the wire winding mechanism includes a first bearing support mounted on the linear motion module, and the first bearing support is mounted with a wire winding mandrel synchronous wheel through a wire winding mandrel; the wire winding mandrel has a plurality of wire winding mandrel holes;

[0009] A rotary untwisting mechanism is located on the right side of the winding mechanism, and the rotary untwisting mechanism includes a second bearing support straddling the two linear rails, the second bearing support is equipped with an untwisting disk, a central gear is installed at the center of the untwisting disk through an untwisting mandrel, the outer periphery of the central gear is meshed with multiple untwisting gears through multiple intermediate gears, and each untwisting gear is equipped with a tension mechanism;

[0010] During winding, one end of the braided stent for thrombus capture is fixed to the right clamp, and the other end is extended and fixed through the left clamp and passed through the winding core shaft hole of the winding core shaft to be fixed on the tension mechanism of the rotary untwisting mechanism.

[0011] Furthermore, a pulley is provided on the wheel frame, a suspension rope is wound on the pulley, one end of the suspension rope is connected to the rotary untwisting mechanism, and the other end is connected to a counterweight block, and the counterweight block is used to maintain the tension of the suspension rope when it is pulled.

[0012] Furthermore, a left supporting leg and a right supporting leg are respectively connected to the left and right sides of the rack platform, the right supporting leg is provided with a vertical slide rail, and the counterweight block is slidably connected to the vertical slide rail.

[0013] Furthermore, the first bearing support is connected to a first motor fixing plate, and a first power motor connected to a wire winding mandrel synchronous wheel through a first transmission assembly is installed on the first motor fixing plate. The first transmission assembly includes a first motor synchronous wheel connected to the first power motor, and a first power belt connected to the first motor synchronous wheel and the wire winding mandrel synchronous wheel, and the wire winding mandrel synchronous wheel is driven to rotate by the first power motor.

[0014] Furthermore, the second bearing support is connected to a second motor fixing plate, and a second power motor is installed on the second motor fixing plate. The second transmission assembly includes a detwisting mandrel synchronous wheel connected to the detwisting mandrel, a second motor synchronous wheel connected to the second power motor, and a second power belt connecting the detwisting mandrel synchronous wheel and the second motor synchronous wheel, and the detwisting mandrel synchronous wheel and the detwisting mandrel are driven to rotate by the second power motor.

[0015] Furthermore, the tension mechanism includes a sleeve arranged on the surface of the untwisting gear, a wire sleeve fixed to the sleeve port, a pull rod connected to the wire sleeve and placed inside the sleeve, and a spring is also arranged between the pull rod and the surface of the untwisting gear. The function of the pull rod and the spring is to tighten each wire with the pull rod and the spring and provide tension, and the spring controls the size of the wire tension; the wire sleeve is provided with a wire clamping head.

[0016] The present invention also relates to the application of an automatic wire winding platform for a thrombus capture stent in stent winding. One end of the braided stent for thrombus capture is fixed to a right clamp, and the other end is extended and fixed through a left clamp and passed through a winding core shaft hole of a winding core shaft to be fixed on a tension mechanism of a rotary untwisting mechanism. The tensioning force is adjusted using the tension mechanism, and the right clamp is driven by a cylinder to move and tighten the winding core shaft. The winding mechanism and the rotary untwisting mechanism are driven to work synchronously, and a plurality of braided wires are wound on the winding core shaft in a uniform spiral shape to form a whole with the braided stent, which is then heated and formed.

[0017] Beneficial effects of the present invention:

[0018] The present invention realizes the automatic winding of the automatic winding platform by constructing a winding mechanism and a rotary untwisting mechanism on a frame platform to cooperate with the left and right clamps on different tracks in the same direction, so as to solve the disadvantages of manual production in the prior art, effectively avoid pollution to the woven products, reduce human errors, and not only improve the production efficiency but also improve the product quality. When the linear motion module is working, it will drive the winding mechanism to move at a uniform speed, and the rotary untwisting mechanism will rotate simultaneously in the same direction as the winding mechanism, so that the winding mechanism will wind multiple strands of wire around the core shaft, and the linear motion module, the winding mechanism and the rotary untwisting mechanism can work simultaneously, and the core shaft can finally form a spiral bracket tail. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of the overall structure in one embodiment of the present invention.

[0020] Figure 2 It is a two-dimensional working schematic diagram of the overall structure in one embodiment of the present invention.

[0021] Figure 3 The figure is a schematic diagram of the structure of a rack in one embodiment of the present invention.

[0022] Figure 4 It is a schematic structural diagram of a wire winding mechanism in one embodiment of the present invention.

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the rotary untwisting mechanism in one embodiment of the present invention.

[0024] Figure 6 The exploded view of the rotary untwisting mechanism in one embodiment of the present invention.

[0025] Figure 7 It is a front view of the rotary untwisting mechanism in one embodiment of the present invention.

[0026] Figure 8 This is a schematic diagram of a finished stent in one embodiment of the present invention, wherein A is a partial enlarged view of the wire-wrapped guide wire.

[0027] In the figure, 1, frame; 2, winding mechanism; 3, rotary untwisting mechanism;

[0028] 1-1, rack platform; 1-2, linear motion module; 1-3, left chuck bracket; 1-4, left chuck; 1-5, clamping block; 1-6, right chuck; 1-7, cylinder bracket; 1-8, cylinder; 1-9, linear rail; 1-10, wheel frame; 1-11, vertical slide rail; 1-12, counterweight; 1-13, lifting rope;

[0029] 2-1, first power motor; 2-2, first motor synchronous wheel; 2-3, winding mandrel synchronous wheel; 2-4, first power belt; 2-5, first bearing support; 2-6, first motor fixing plate; 2-7, winding mandrel;

[0030] 3-1, second power motor; 3-2, second motor synchronous wheel; 3-3, untwisting mandrel synchronous wheel; 3-4, second power belt; 3-5, untwisting mandrel; 3-6, second bearing support; 3-7, second motor fixing plate; 3-8, center gear; 3-9, untwisting disk; 3-10, tension mechanism; 3-11, untwisting gear; 3-12, intermediate gear; 3-13, center gear fixing bracket;

[0031] 3-10-1, sleeve; 3-10-2, spring; 3-10-3, pull rod; 3-10-4, thread sleeve; 3-10-5, thread head. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present invention, the "first" and "second" are only used to distinguish similar components / parts with different positions or different characteristics, and have no other limiting meanings; the "upper" refers to the direction of each component away from the ground, and the "lower" refers to the direction of each component away from the ground.

[0035] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0036] Example 1

[0037] like Figure 1-7 As shown, the present invention provides an automatic wire winding platform for a thrombus capture stent, comprising:

[0038] The frame 1 includes a frame platform 1-1 and a linear motion module 1-2, a linear rail 1-9, a left clamp 1-4, and a wheel frame 1-10 installed on the frame platform 1-1. The frame platform 1-1 is in the shape of a long strip. The left clamp 1-4 is located on the left side of the linear motion module. The left clamp 1-4 is fixed to the left end of the frame platform 1-1 through a left clamp bracket 1-3. The linear motion module 1-2 is also a linear motion module. The linear motion module 1-2 includes a guide rail arranged parallel to the long side of the frame platform 1-1. The linear motion module 1 -2 movement direction, that is, two parallel linear rails 1-9 are respectively arranged on both sides of the guide rail, and the two linear rails 1-9 are also arranged parallel to the guide rail. A right clamp 1-6 is bridged on the two linear rails 1-9, and the lower part of the right clamp 1-6 has two sliding blocks and can be slidably connected to the two linear rails 1-9 respectively. The right clamp 1-6 is also connected to a cylinder 1-8 and the cylinder 1-8 drives the right clamp 1-6 to slide on the two linear rails 1-9; the wheel frame 1-10 is arranged at the right end of the frame platform 1-1; the left clamp 1-4 and the right clamp 1-6 are both provided with clamping blocks;

[0039] The wire winding mechanism 2 is located on the right side of the left chuck 1-4, and the wire winding mechanism 2 includes a first bearing support 2-5 installed on the linear motion module 1-2, and the first bearing support 2-5 is installed with a wire winding mandrel synchronous wheel 2-3 through a wire winding mandrel 2-7; the wire winding mandrel 2-7 has a plurality of wire winding mandrel holes; the first bearing support 2-5 is connected to a first motor fixing plate 2-6, and the first motor fixing plate 2-6 is installed with a first power motor 2-1 connected to the wire winding mandrel synchronous wheel 2-3 through a first transmission assembly; the first transmission assembly includes a first motor synchronous wheel 2-2 connected to the first power motor 2-1, and a first power belt 2-4 connected to the first motor synchronous wheel 2-2 and the wire winding mandrel synchronous wheel 2-3, and the first power motor 2-1 drives the wire winding mandrel synchronous wheel 2-3 to rotate;

[0040] The rotary untwisting mechanism 3 is located on the right side of the winding mechanism 2, and the rotary untwisting mechanism 3 includes a second bearing support 3-6 spanning the two linear rails 1-9, and the second bearing support 3-6 is equipped with an untwisting disk 3-9, and the center of the untwisting disk 3-9 is equipped with a central gear 3-8 through an untwisting core shaft 3-5, and the outer periphery of the central gear 3-8 is meshed and connected to multiple untwisting gears 3-11 through four intermediate gears 3-12, and each untwisting gear 3-11 is equipped with a tension mechanism 3-10; the second bearing support 3-6 is connected to a second motor fixing plate 3-7, and the second motor fixing plate 3-2 is equipped with a second power motor 3-1. The second transmission assembly includes a untwisting mandrel synchronous wheel 3-3 connected to the untwisting mandrel 3-5, a second motor synchronous wheel 3-2 connected to the second power motor 3-1, and a second power belt 3-4 connecting the untwisting mandrel synchronous wheel 3-3 and the second motor synchronous wheel 3-2. The untwisting mandrel synchronous wheel 3-3 and the untwisting mandrel 3-5 are driven to rotate by the second power motor 3-1.

[0041] Furthermore, a pulley is provided on the wheel frame 1-10, and a suspension rope 1-13 is wound on the pulley. One end of the suspension rope 1-13 is connected to the rotary untwisting mechanism 3, and the other end is connected to a counterweight block 1-12. The counterweight block 1-12 is used to maintain the tension of the suspension rope 1-13 when it is pulled.

[0042] Furthermore, the left and right sides of the rack platform 1-1 are respectively connected with a left supporting leg and a right supporting leg, the right supporting leg is provided with a vertical slide rail 1-11, and the counterweight block 1-12 is slidably connected to the vertical slide rail 1-11.

[0043] Furthermore, the tension mechanism 3-10 includes a sleeve 3-10-1 arranged on the surface of the detwisting gear 3-11, a wire sleeve 3-10-4 fixed to the port of the sleeve 3-10-1, a pull rod 3-10-3 connected to the wire sleeve 3-10-4 and placed inside the sleeve 3-10-1, and a spring 3-10-2 is also arranged between the pull rod 3-10-3 and the surface of the detwisting gear 3-11. The function of the pull rod 3-10-3 and the spring 3-10-2 is to tighten each wire with the pull rod 3-10-3 and the spring 3-10-2 and provide tension. The spring 3-10-2 controls the size of the wire tension; the wire sleeve 3-10-4 is provided with a wire head 3-10-5.

[0044] Example 2

[0045] The present invention also relates to the application of an automatic wire winding platform for a thrombus capture stent in stent winding. One end of the braided stent for thrombus capture is fixed to the right clamp 1-6, and the other end is extended and fixed through the left clamp 1-4 and passed through the winding core shaft hole of the winding core shaft 2-7 to be fixed on the tension mechanism 3-10 of the rotary untwisting mechanism 3. The tensioning force is adjusted by the tension mechanism, and the right clamp is driven by the cylinder 1-8 to move and tighten the winding core shaft, driving the winding mechanism 2 and the rotary untwisting mechanism 3 to work synchronously, so that a plurality of braided wires are evenly spirally wound on the winding core shaft and form a whole with the braided stent, and then heated and formed.

[0046] Specifically, the steps include:

[0047] Step 1: First, install the winding mechanism 2 and the rotary untwisting mechanism 3 on the frame platform 1, and install the left clamp 1-4 and the right clamp 1-6 and the clamp block 1-5 at both ends of the frame platform 1 respectively.

[0048] Step 2: Fix one end of the suspension rope 1-13 on the rotary untwisting mechanism 3, and the other end on the counterweight 1-12. When the counterweight 1-12 moves along the vertical slide rail 1-11, the rotary untwisting mechanism 3 can also slide freely on the linear rail 1-9. In this way, when the rotary untwisting mechanism 3 moves, the counterweight 1-12 can also provide a resistance for the rotary untwisting mechanism 3, so that the rotary untwisting mechanism 3 moves with tension. The size of the resistance can be achieved by increasing or decreasing the mass of the counterweight 1-12.

[0049] Step 3: Fix one end of the braided stent for thrombus capture to the right clamp 1-6, extend the other end and fix it through the left clamp 1-4, clamp the stent and the reserved multi-strand wire at the connection point with the clamp block 1-5 to prevent the pre-braided stent from being affected during the wire winding, pass the braided stent through the center with the wire winding mandrel, and fix them together with the clamp 1-4, and fix the other end of the wire winding mandrel on the clamp 1-4 with the cylinder 1-8, and the cylinder works to tighten the wire winding mandrel; The multiple strands of wire on the rack pass through the multiple wire winding mandrel holes on the wire winding mandrel 2-7 respectively, and are fixed on the wire clamping sleeves 3-10-4 on the corresponding tension mechanism 3-10, and the wires are supported by the wire clamping heads 3-10-5 to prevent them from loosening; before the multiple strands of wire are fixed on the wire clamping sleeves 3-10-4, the sleeve 3-10-1 should be pulled toward the direction of the wire, because the sleeve 3-10-1 has a spring 3-10-2 inside, so the multiple strands of wire at this time are pre-tensioned.

[0050] Step 4: Since the tension mechanism 3-10 is fixed on the untwisting gear 3-11, multiple untwisting gears 3-11 and intermediate gears 3-12 are installed on the untwisting disk 3-9, and the untwisting disk 3-9 is fixed on the untwisting mandrel 3-5, and then the central gear 3-8 passes through the center of the untwisting mandrel 3-5, so that the central gear 3-8 is meshed with the four intermediate gears 3-12 installed on the untwisting disk 3-9, and the central gear 3-8 is also fixed on the central gear fixing bracket 3-13, and the central gear fixing bracket 3-13 is fixed to the upper end of the bearing support 3-6, and the central gear 3-8, the intermediate gear 3-12, and the untwisting gear 3-11 are meshed together from the center to the outside on the untwisting gear 3-11;

[0051] Step 5: When the frame platform 1, the winding mechanism 2 and the rotary untwisting mechanism 3 work at the same time, the winding core shaft 2-7 in the winding mechanism 2 rotates in a circular motion with the multiple strands of wire, and at the same time, the winding mechanism 2 moves at a uniform speed on the linear motion module 1-2 on the frame platform 1, and the rotary untwisting mechanism 3 and the winding mechanism 2 rotate in the same direction, and the wire of the multiple strands of wire passing through the winding mechanism 2 is fixed on the tension mechanism 3-10 on the rotary untwisting mechanism 3, so that the multiple strands of wire of the bracket are finally arranged in a uniform spiral around the winding core shaft; the function of the rotary untwisting mechanism 3 here is to prevent the multiple strands of wire from twisting themselves as the untwisting disk 3-9 rotates during rotation.

[0052] Since the multiple strands of wire supported by the rotary untwisting mechanism 3 are wound on the winding core shaft, the length of the wire fixed on the tension mechanism 3-10 will gradually shorten with the length of the winding time. In this way, the rotary untwisting mechanism 3 will move toward the winding mechanism 2 at the same time, and the tension is adjusted by the counterweight block 1-12.

[0053] The center gear 3-8 is fixed, and the intermediate gear 3-12 and the untwisting gear 3-11 on the untwisting disk 3-9 move with the untwisting disk 3-9. When the untwisting disk 3-9 rotates in the same direction as the winding mechanism 2, the untwisting gear 3-11 and the tension mechanism 3-10 fixed on the untwisting disk 3-9 rotate in the opposite direction to the untwisting disk 3-9, so that the torsional force of the multiple strands of wire themselves is removed, and the wound bracket does not bend.

[0054] The final finished stent is as follows Figure 8 As shown, it is a uniform spiral wire tube.

[0055] Although the present invention has been disclosed as above in the form of a preferred embodiment, it is not intended to limit the present invention. Anyone familiar with this technology can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the definition of the claims.

Claims

1. An automatic wire winding platform for a thrombus capture stent, characterized in that: include: The frame includes a frame platform and a linear motion module, a linear rail, a left chuck and a wheel frame installed on the frame platform, wherein the left chuck is located on the left side of the linear motion module, two parallel linear rails are respectively arranged on both sides of the motion direction of the linear motion module, a right chuck is straddled on the two linear rails, the right chuck is connected to a cylinder and the cylinder drives the right chuck to slide on the two linear rails, and the wheel frame is arranged at the right end of the frame platform; The wire winding mechanism is located on the right side of the left chuck, and the wire winding mechanism includes a first bearing support mounted on the linear motion module, and the first bearing support is mounted with a wire winding mandrel synchronous wheel through a wire winding mandrel; the wire winding mandrel has a plurality of wire winding mandrel holes; A rotary untwisting mechanism is located on the right side of the winding mechanism, and the rotary untwisting mechanism includes a second bearing support straddling the two linear rails, the second bearing support is equipped with an untwisting disk, a central gear is installed at the center of the untwisting disk through an untwisting mandrel, the outer periphery of the central gear is meshed with multiple untwisting gears through multiple intermediate gears, and each untwisting gear is equipped with a tension mechanism; During winding, one end of the braided stent for thrombus capture is fixed to the right clamp, and the other end is extended and fixed through the left clamp and passed through the winding core shaft hole of the winding core shaft to be fixed on the tension mechanism of the rotary untwisting mechanism.

2. The automatic wire winding platform for a thrombus capture stent according to claim 1, characterized in that: The wheel frame is provided with a pulley, the pulley is wound with a suspension rope, one end of the suspension rope is connected to the rotary untwisting mechanism, and the other end is connected to a counterweight block.

3. The automatic wire winding platform for a thrombus capture stent according to claim 2, characterized in that: The left and right sides of the frame platform are respectively connected with a left supporting leg and a right supporting leg, the right supporting leg is provided with a vertical slide rail, and the counterweight block is slidably connected to the vertical slide rail.

4. The automatic wire winding platform for a thrombus capture stent according to claim 1, characterized in that: The first bearing support is connected to a first motor fixing plate, and a first power motor connected to a wire winding core shaft synchronous wheel through a first transmission assembly is installed on the first motor fixing plate.

5. The automatic wire winding platform for a thrombus capture stent according to claim 4, characterized in that: The first transmission assembly includes a first motor synchronous wheel connected to a first power motor, and a first power belt connected to the first motor synchronous wheel and a wire winding mandrel synchronous wheel, and the wire winding mandrel synchronous wheel is driven to rotate by the first power motor.

6. The automatic wire winding platform for a thrombus capture stent according to claim 1, characterized in that: The second bearing support is connected to a second motor fixing plate, and a second power motor is installed on the second motor fixing plate.

7. The automatic wire winding platform for a thrombus capture stent according to claim 6, characterized in that: The second transmission assembly includes an untwisting mandrel synchronous wheel connected to the untwisting mandrel, a second motor synchronous wheel connected to the second power motor, and a second power belt connecting the untwisting mandrel synchronous wheel and the second motor synchronous wheel. The untwisting mandrel synchronous wheel and the untwisting mandrel are driven to rotate by the second power motor.

8. The automatic wire winding platform for a thrombus capture stent according to claim 1, characterized in that: The tension mechanism includes a sleeve arranged on the surface of the untwisting gear, a thread clamping sleeve fixed to the sleeve port, a pull rod connected to the thread clamping sleeve and placed inside the sleeve, a spring is also arranged between the pull rod and the surface of the untwisting gear, and the thread clamping sleeve is provided with a thread clamping head.

9. Application of an automatic wire winding platform for a thrombus capture stent according to any one of claims 1 to 8 in stent winding, characterized in that: One end of the braided stent for thrombus capture is fixed to the right clamp, and the other end is extended and fixed through the left clamp and passed through the winding core shaft hole of the winding core shaft to be fixed on the tension mechanism of the rotary untwisting mechanism. The tensioning force is adjusted by using the tension mechanism, and the right clamp is driven by the cylinder to move and tighten the winding core shaft, driving the winding mechanism and the rotary untwisting mechanism to work synchronously, and multiple braided wires are evenly spirally wound on the winding core shaft to form a whole with the braided stent, and then heated and formed.

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