An automatic wire winding platform for thrombus capturing stent and application thereof

Abstract

The application relates to an automatic winding platform for a thrombus capturing stent and application, and belongs to the technical field of medical instrument weaving. The automatic winding platform is realized through cooperation of a winding mechanism, a rotary untwisting mechanism and left and right clamps on different tracks in the same direction on a rack platform, so as to solve the drawbacks of manual production in the prior art, effectively avoid pollution to the woven product and reduce manual errors, improve the production efficiency and product quality, and when a linear motion module works, the winding mechanism is driven to move at a constant speed, the rotary untwisting mechanism rotates in the same direction as the winding mechanism, the winding mechanism winds multiple wires on the mandrel, the linear motion module, the winding mechanism and the rotary untwisting mechanism can work simultaneously, and the mandrel can finally form a spiral stent tail.

Description

Technical Field

[0001] This invention relates to an automated wire winding platform for thrombus capture stents and its application, belonging to the field of medical device weaving technology. Background Technology During procedures such as percutaneous coronary intervention, cerebrovascular intervention, and peripheral vascular intervention, it is often necessary to use a stent specifically designed for thrombus capture to effectively capture and remove thrombi within the blood vessel, thereby restoring blood flow and preventing further complications.

[0002] Currently, most manufacturers require a significant amount of manual labor to wind the guidewire at the end of the stent when producing this type of stent for thrombus capture. Furthermore, multiple people are needed to complete the winding work, resulting in very low production efficiency. At the same time, the products produced by manual winding vary greatly, which seriously affects the quality of the products.

[0003] Therefore, the disadvantages of using the existing traditional manual method to wind thrombus capture stents are: when winding the product, manual operation of the 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 affect the product quality.

[0004] In the prior art, although there is a braiding machine platform and braiding method for braiding medical thrombus capture stents as shown in CN112877900B, it mainly focuses on the braiding process of thrombus stents and does not involve the next winding process of thrombus stents. The winding process refers to winding the multi-strand wires reserved by the thrombus stent into the guide wire part. Summary of the Invention

[0005] To address the above problems, the present invention provides an automated wire winding platform for a thrombus capture stent, comprising: The frame includes a frame platform and a linear motion module, linear rails, a left chuck, and a wheel frame mounted on the frame platform. 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 linear motion module in the direction of motion. A right chuck is connected across 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. The wheel frame is located at the right end of the frame platform. The wire winding mechanism is located on the right side of the left chuck. The wire winding mechanism includes a first bearing support mounted on the linear motion module. The first bearing support is equipped with a wire winding mandrel synchronous pulley via a wire winding mandrel. The wire winding mandrel has multiple wire winding mandrel holes. A rotary untwisting mechanism is located on the right side of the winding mechanism. The rotary untwisting mechanism includes a second bearing support spanning two linear rails. An untwisting disc is mounted on the second bearing support. A central gear is mounted on the center of the untwisting disc via an untwisting mandrel. Multiple untwisting gears are meshed with multiple intermediate gears around the outer periphery of the central gear. Each untwisting gear is equipped with a tension mechanism. During winding, one end of the braided thrombus capture stent is fixed to the right clamp, and the other end is extended, fixed through the left clamp, and then passed through the winding mandrel hole and fixed to the tension mechanism of the rotary untwisting mechanism.

[0006] Furthermore, a pulley is provided on the wheel frame, and 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. The counterweight is used to maintain the tension of the suspension rope during traction.

[0007] Furthermore, the left and right support legs are respectively connected to the left and right sides of the frame platform, the right support leg is provided with a vertical slide rail, and the counterweight is slidably connected to the vertical slide rail.

[0008] Furthermore, the first bearing support is connected to a first motor mounting plate, and a first power motor is mounted on the first motor mounting plate and connected to the winding mandrel synchronous pulley via a first transmission assembly. The first transmission assembly includes a first motor synchronous pulley connected to the first power motor and a first power belt connecting the first motor synchronous pulley and the winding mandrel synchronous pulley, and the winding mandrel synchronous pulley is driven to rotate by the first power motor.

[0009] Furthermore, the second bearing support is connected to a second motor mounting plate, and a second power motor is mounted on the second motor mounting plate. The second transmission assembly includes a detwisting mandrel synchronous pulley connected to the detwisting mandrel, a second motor synchronous pulley connected to the second power motor, and a second power belt connecting the detwisting mandrel synchronous pulley and the second motor synchronous pulley, wherein the second power motor drives the detwisting mandrel synchronous pulley and the detwisting mandrel to rotate.

[0010] Furthermore, the tension mechanism includes a sleeve disposed on the surface of the untwisting gear, a wire clamping sleeve fixed to the sleeve port, and a pull rod connected to the wire clamping sleeve and placed inside the sleeve. A spring is also disposed 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 tension by the pull rod and the spring, and the spring controls the wire tension. The wire clamping sleeve is provided with a wire clamping head.

[0011] This invention also relates to the application of an automatic winding platform for thrombus capture stents in stent winding. One end of the woven stent for thrombus capture is fixed to the right clamp, and the other end is extended, fixed through the left clamp, and passed through the winding mandrel hole of the winding mandrel and fixed to the tension mechanism of the rotary untwisting mechanism. The tension mechanism is used to adjust the tension, and the right clamp is moved by a cylinder to tighten the stent. The winding mechanism and the rotary untwisting mechanism work synchronously to wind multiple braided filaments in a uniform spiral shape on the winding mandrel and form an integral part with the woven stent. Then, it is heated and shaped.

[0012] The beneficial effects of this invention are: This invention achieves automated winding of the automatic winding platform by constructing a winding mechanism and a rotary untwisting mechanism on the frame platform, which work in coordination with the left and right clamps on different tracks in the same direction. This solves the drawbacks of manual production in the prior art, effectively avoids contamination of the woven products, reduces human error, improves production efficiency, and enhances product quality. When the linear motion module is working, it drives the winding mechanism to move at a constant speed, and the rotary untwisting mechanism rotates simultaneously in the same direction as the winding mechanism. In this way, the winding mechanism winds multiple strands of yarn onto the mandrel. The linear motion module, the winding mechanism, and the rotary untwisting mechanism can work simultaneously, and the mandrel can ultimately form a spiral-shaped support tail. Attached Figure Description

[0013] Figure 1 This is a three-dimensional schematic diagram of the overall structure in one embodiment of the present invention.

[0014] Figure 2 This is a two-dimensional working schematic diagram of the overall structure in one embodiment of the present invention.

[0015] Figure 3 This is a schematic diagram of the frame structure in one embodiment of the present invention.

[0016] Figure 4 This is a schematic diagram of the wire winding mechanism in one embodiment of the present invention.

[0017] Figure 5 This is a three-dimensional structural schematic diagram of the rotary untwisting mechanism in one embodiment of the present invention.

[0018] Figure 6 This is an exploded view of the rotary untwisting mechanism in one embodiment of the present invention.

[0019] Figure 7 This is a front view of the rotary untwisting mechanism in one embodiment of the present invention.

[0020] Figure 8 This is a schematic diagram of the finished stent in one embodiment of the present invention, where point A is a partially enlarged view of the wire winding guide.

[0021] In the diagram, 1 is the frame; 2 is the winding mechanism; and 3 is the rotary untwisting mechanism. 1-1. Frame platform; 1-2. Linear motion module; 1-3. Left chuck support; 1-4. Left chuck; 1-5. Clamping block; 1-6. Right chuck; 1-7. Cylinder support; 1-8. Cylinder; 1-9. Linear guide rail; 1-10. Wheel frame; 1-11. Vertical slide rail; 1-12. Counterweight; 1-13. Lifting rope; 2-1. First power motor; 2-2. First motor synchronous pulley; 2-3. Winding mandrel synchronous pulley; 2-4. First power belt; 2-5. First bearing support; 2-6. First motor mounting plate; 2-7. Winding mandrel; 3-1. Second power motor; 3-2. Second motor synchronous pulley; 3-3. Untwisting mandrel synchronous pulley; 3-4. Second power belt; 3-5. Untwisting mandrel; 3-6. Second bearing support; 3-7. Second motor mounting plate; 3-8. Central gear; 3-9. Untwisting disc; 3-10. Tension mechanism; 3-11. Untwisting gear; 3-12. Intermediate gear; 3-13. Central gear mounting bracket; 3-10-1, Sleeve; 3-10-2, Spring; 3-10-3, Pull rod; 3-10-4, Threaded sleeve; 3-10-5, Threaded head. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below 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.

[0023] In this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0024] In this invention, the terms "first" and "second" are used only to distinguish similar components / parts in different positions or with different characteristics, and have no other limiting meaning; "upper" refers to the direction in which each component is away from the ground, and "lower" refers to the direction in which each component is away from the ground.

[0025] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0026] Example 1 like Figure 1-7 As shown, the present invention provides an automated wire winding platform for a thrombus capture stent, comprising: The frame 1 includes a frame platform 1-1 and a linear motion module 1-2, a linear guide rail 1-9, a left chuck 1-4, and a wheel frame 1-10 mounted on the frame platform 1-1. The frame platform 1-1 is a long strip-shaped plate. The left chuck 1-4 is located on the left side of the linear motion module and is fixed to the left end of the frame platform 1-1 by a left chuck bracket 1-3. The linear motion module 1-2 is also a linear motion module and includes a guide rail arranged parallel to the long side of the frame platform 1-1. -2's movement direction, i.e., two parallel linear rails 1-9 are respectively set on both sides of the guide rail. The two linear rails 1-9 are also parallel to the guide rail. A right chuck 1-6 is connected across the two linear rails 1-9. The lower part of the right chuck 1-6 has two sliders that can slide to connect to the two linear rails 1-9 respectively. The right chuck 1-6 is also connected to a cylinder 1-8, and the cylinder 1-8 drives the right chuck 1-6 to slide on the two linear rails 1-9. The wheel frame 1-10 is set at the right end of the frame platform 1-1. Both the left chuck 1-4 and the right chuck 1-6 are equipped with clamping blocks. The winding mechanism 2 is located on the right side of the left chuck 1-4. The winding mechanism 2 includes a first bearing support 2-5 mounted on the linear motion module 1-2. The first bearing support 2-5 has a winding mandrel synchronous pulley 2-3 mounted on it via a winding mandrel 2-7. The winding mandrel 2-7 has multiple winding mandrel holes. The first bearing support 2-5 is connected to a first motor fixing plate 2-6. A first power motor 2-1 is mounted on the first motor fixing plate 2-6 and connected to the winding mandrel synchronous pulley 2-3 via a first transmission assembly. The first transmission assembly includes a first motor synchronous pulley 2-2 connecting the first power motor 2-1 and a first power belt 2-4 connecting the first motor synchronous pulley 2-2 and the winding mandrel synchronous pulley 2-3. The winding mandrel synchronous pulley 2-3 is driven to rotate by the first power motor 2-1. The rotary untwisting mechanism 3 is located on the right side of the winding mechanism 2. The rotary untwisting mechanism 3 includes a second bearing support 3-6 spanning two linear guides 1-9. The second bearing support 3-6 is equipped with an untwisting disc 3-9. A central gear 3-8 is mounted on the center of the untwisting disc 3-9 through an untwisting mandrel 3-5. The outer periphery of the central gear 3-8 is connected to multiple untwisting gears 3-11 through four intermediate gears 3-12. 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. A second power motor 3-1 is mounted on the second motor fixing plate 3-7. The second transmission assembly includes a detwisting mandrel synchronous pulley 3-3 connected to the detwisting mandrel 3-5, a second motor synchronous pulley 3-2 connected to the second power motor 3-1, and a second power belt 3-4 connected to the detwisting mandrel synchronous pulley 3-3 and the second motor synchronous pulley 3-2. The second power motor 3-1 drives the detwisting mandrel synchronous pulley 3-3 and the detwisting mandrel 3-5 to rotate.

[0027] 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 the counterweight 1-12. The counterweight 1-12 is used to maintain the tension of the suspension rope 1-13 when it is being pulled.

[0028] Furthermore, the left and right support legs are respectively connected to the left and right sides of the frame platform 1-1, the right support leg is provided with a vertical slide rail 1-11, and the counterweight 1-12 is slidably connected to the vertical slide rail 1-11.

[0029] Furthermore, the tension mechanism 3-10 includes a sleeve 3-10-1 disposed on the surface of the untwisting gear 3-11, a wire clamping sleeve 3-10-4 fixed to the port of the sleeve 3-10-1, and a pull rod 3-10-3 connected to the wire clamping sleeve 3-10-4 and placed inside the sleeve 3-10-1. A spring 3-10-2 is also disposed between the pull rod 3-10-3 and the surface of the untwisting gear 3-11. The function of the pull rod 3-10-3 and the spring 3-10-2 is to tighten each wire with tension by the pull rod 3-10-3 and the spring 3-10-2, and the spring 3-10-2 controls the wire tension. The wire clamping sleeve 3-10-4 is provided with a wire clamping head 3-10-5.

[0030] Example 2 This invention also relates to the application of an automatic winding platform for thrombus capture stents in stent winding. One end of the woven stent for thrombus capture is fixed to the right clamp 1-6, and the other end is extended, fixed through the left clamp 1-4, and passed through the winding mandrel hole of the winding mandrel 2-7 and fixed to the tension mechanism 3-10 of the rotary untwisting mechanism 3. The tension mechanism is used to adjust the tension, and the right clamp is moved and tightened by the cylinder 1-8. The winding mechanism 2 and the rotary untwisting mechanism 3 work synchronously to wind multiple braided filaments in a uniform spiral shape on the winding mandrel and form an integral part with the woven stent. Then, it is heated and shaped.

[0031] Specifically, it includes the following steps: Step 1: First, install the winding mechanism 2 and the rotary untwisting mechanism 3 on the frame platform 1. Then, install the left chuck 1-4 and the right chuck 1-6, as well as the clamping block 1-5, at both ends of the frame platform 1.

[0032] Step 2: Fix one end of the suspension rope 1-13 to the rotary untwisting mechanism 3 and the other end to the counterweight 1-12. When the counterweight 1-12 moves along the vertical slide rail 1-11, it 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 to the rotary untwisting mechanism 3, so that the rotary untwisting mechanism 3 moves with tension. The magnitude of the resistance can be adjusted by increasing or decreasing the mass of the counterweight 1-12.

[0033] Step 3: Fix one end of the braided stent for thrombus capture to the right clamp 1-6, and extend the other end through the left clamp 1-4. Clamp the stent with clamp block 1-5 at the connection point with the pre-reserved multi-strand wire to prevent the pre-braided stent from being affected during wire winding. Pass the braided stent through the center with a wire winding mandrel and fix it together with clamp 1-4. Fix the other end of the wire winding mandrel to clamp 1-4 with cylinder 1-8. The cylinder tightens the wire winding mandrel. The multiple strands of wire pass through the multiple winding mandrel holes on the winding mandrel 2-7 and are fixed to the wire clamping sleeves 3-10-4 on the corresponding tension mechanism 3-10. The wire clamping head 3-10-5 holds the wire in place to prevent it from loosening. Before the multiple strands of wire are fixed to the wire clamping sleeve 3-10-4, the sleeve 3-10-1 should be pulled towards the direction of the wire. Because the sleeve 3-10-1 has a spring 3-10-2 inside, the multiple strands of wire are pre-tensioned at this time.

[0034] 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 disc 3-9. The untwisting disc 3-9 is then fixed on the untwisting mandrel 3-5. The center gear 3-8 passes through the center of the untwisting mandrel 3-5, so that the center gear 3-8 meshes with the four intermediate gears 3-12 installed on the untwisting disc 3-9. The center gear 3-8 is also fixed on the center gear fixing bracket 3-13. The center gear fixing bracket 3-13 is fixed on the upper end of the bearing support 3-6. The center gear 3-8, intermediate gears 3-12, and untwisting gear 3-11 are meshed together from the center outwards on the untwisting gear 3-11. Step 5: When the frame platform 1, winding mechanism 2, and rotary untwisting mechanism 3 work simultaneously, the winding mandrel 2-7 in the winding mechanism 2 rotates in a circular motion with the multi-strand yarn. At the same time, the winding mechanism 2 moves at a constant speed on the linear motion module 1-2 on the frame platform 1. The rotary untwisting mechanism 3 rotates in the same direction as the winding mechanism 2. Another multi-strand support yarn passing through the winding mechanism 2 is fixed on the tension mechanism 3-10 on the rotary untwisting mechanism 3. Therefore, the multi-strand yarn of the support is finally arranged in a uniform spiral and wound on the winding mandrel. The function of the rotary untwisting mechanism 3 here is to prevent the multi-strand yarn from twisting itself during the rotation of the untwisting disc 3-9.

[0035] Since the multiple strands of wire supported by the rotating untwisting mechanism 3 are wound on the winding mandrel, the length of the wire fixed to the tension mechanism 3-10 will gradually shorten as the winding time length increases. At the same time, the rotating untwisting mechanism 3 will move towards the winding mechanism 2, and the tension is adjusted by the counterweight 1-12.

[0036] The central gear 3-8 is fixed, while the intermediate gear 3-12 and untwisting gear 3-11 on the untwisting disc 3-9 move with the untwisting disc 3-9. When the untwisting disc 3-9 rotates in the same direction as the winding mechanism 2, the untwisting gear 3-11 and tension mechanism 3-10 fixed on the untwisting disc 3-9 rotate in the opposite direction to the untwisting disc 3-9. This removes the torque of the multi-strand yarn itself, and the wound support does not bend.

[0037] The final coiled bracket is as follows Figure 8 As shown, it is a uniform spiral wire tube.

[0038] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Anyone skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the claims.

Claims

1. An automated wire winding platform for thrombus capture stents, characterized in that, include: The frame includes a frame platform and a linear motion module, linear guides, a left chuck, a wheel frame, and a second transmission assembly mounted on the frame platform. The left chuck is located on the left side of the linear motion module. A linear guide is provided on each side of the linear motion module's movement direction, and the two linear guides are parallel. A right chuck is straddled across the two linear guides. The right chuck is connected to a cylinder, and the cylinder drives the right chuck to slide on the two linear guides. The wheel frame is located at the right end of the frame platform. A wire winding mechanism is located on the right side of the left chuck. The wire winding mechanism includes a first bearing support mounted on the linear motion module. The first bearing support is connected to a wire winding mandrel via a wire winding mandrel. The winding mandrel has multiple winding mandrel holes; a rotary untwisting mechanism is located on the right side of the winding mechanism. The rotary untwisting mechanism includes a second bearing support spanning two linear rails. The second bearing support is equipped with an untwisting disc. A central gear is installed at the center of the untwisting disc through the untwisting mandrel. Multiple untwisting gears are meshed with multiple intermediate gears around the outer periphery of the central gear. Each untwisting gear is equipped with a tension mechanism. During winding, one end of the woven thrombus capture stent is fixed to the right clamp, and the other end is extended, fixed through the left clamp, and passes through the winding mandrel hole of the winding mandrel to be fixed to the tension mechanism of the rotary untwisting mechanism. The second bearing support is connected to a second motor fixing plate, and a second power motor is mounted on the second motor fixing plate; the second transmission assembly includes a detwisting mandrel synchronous pulley connected to the detwisting mandrel, a second motor synchronous pulley connected to the second power motor, and a second power belt connected to the detwisting mandrel synchronous pulley and the second motor synchronous pulley, and the detwisting mandrel synchronous pulley and the detwisting mandrel are driven to rotate by the second power motor.

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

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

4. The automated 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 mounting plate, and a first power motor is mounted on the first motor mounting plate and connected to the winding mandrel synchronous pulley via a first transmission component.

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

6. An automated wire winding platform for a thrombus capture stent according to claim 1, characterized in that, The tension mechanism includes a sleeve disposed on the surface of the untwisting gear, a wire clamping sleeve fixed to the end of the sleeve, a pull rod connected to the wire clamping sleeve and placed inside the sleeve, a spring being disposed between the pull rod and the surface of the untwisting gear, and a wire clamping head being disposed on the wire clamping sleeve.

7. The application of the automated wire winding platform for thrombus capture stents according to any one of claims 1-6 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, fixed through the left clamp, and then passed through the winding mandrel hole and fixed to the tension mechanism of the rotary untwisting mechanism. The tension mechanism is used to adjust the tension, and the right clamp is moved by the cylinder to tighten the stent. The winding mechanism and the rotary untwisting mechanism are driven to work synchronously, so that multiple braided filaments are wound in a uniform spiral on the winding mandrel and formed as a whole with the braided stent. Then, it is heated and shaped.

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