A medical implant, a braiding jig and a braiding method

Abstract

The application provides a medical implant, a weaving jig and a weaving method. The medical implant is woven by a degradable wire and has a plug section and two limiting sections. The two ends of the plug section are connected with the two limiting sections respectively. The plug section comprises a first outer diameter section and a second outer diameter section. In the projection of the medical implant in the axial direction, the first outer diameter section has a first outer diameter L1, the second outer diameter section has a second outer diameter L2, and the limiting section has a third outer diameter L3. Wherein, L1L2L3. The application realizes the double promotion of the plugging performance and the stability performance of the medical implant.

Description

Technical Field

[0001] This application relates to the field of medical device technology, specifically to a medical implant, a fabricated jig, and a fabrication method. Background Technology

[0002] Currently, conditions such as atrial septal defect (ASD), ventricular septal defect (VSD), patent ductus arteriosus (PDA), aortopulmonary septal defect, and coronary arteriovenous fistula can be treated with surgery and interventional embolization.

[0003] Because surgical treatment is highly invasive, involves significant bleeding, and results in substantial postoperative pain and a slow recovery, interventional embolization is considered a lower-risk treatment than surgery. However, the implants used in current interventional embolization procedures carry the risk of displacement from their original location, affecting their embolic function. Furthermore, if the implant shifts, additional surgery or medical intervention is required to reposition or remove it, significantly increasing patient risk and discomfort. Summary of the Invention

[0004] In order to overcome the drawback of existing implants having the risk of displacement from their original implantation location, this application provides a medical implant, a fabricated jig, and a fabrication method.

[0005] The specific technical solution is as follows:

[0006] In a first aspect, the present invention provides a medical implant, the medical implant being made of braided wire and having an embolization section and two limiting sections, the two ends of the embolization section being respectively connected to the two limiting sections, the embolization section including a first outer diameter section and a second outer diameter section;

[0007] In the projection along the axial direction of the medical implant, the first outer diameter segment has a first outer diameter L1, the second outer diameter segment has a second outer diameter L2, and the limiting segment has a third outer diameter L3; wherein, L1 < L2 < L3.

[0008] Wherein, in the projection along the axial direction of the medical implant, the second outer diameter segment includes at least one curved edge;

[0009] When the number of the arc edges is one, the radian of the arc edge is 2π;

[0010] When there are two curved edges, the two curved edges are symmetrically arranged with respect to the axis of the medical implant, and the curvature of the curved edges is between... between;

[0011] When the number of the arc edges is three or more, the three or more arc edges are arranged in a circular array relative to the axis of the medical implant, and the curvature of the arc edges is between between.

[0012] Wherein, the two ends of the first outer diameter segment are respectively connected to the two limiting segments;

[0013] The second outer diameter segment is formed by N turns around the middle of the first outer diameter segment along the axis of the medical implant; or, the second outer diameter segment is formed by radial protrusion in the middle of the first outer diameter segment; or, the second outer diameter segment is formed by two or more contact portions in the middle of the first outer diameter segment, and the two or more contact portions are arranged circumferentially along the middle of the first outer diameter segment.

[0014] And / or, in, in,

[0015] The medical implant is provided with a first fluid-blocking fluid and a second fluid-blocking fluid, wherein the first fluid-blocking fluid is located within the first outer diameter section and the second fluid-blocking fluid is located within the second outer diameter section;

[0016] When the second outer diameter segment is formed by winding the middle part of the first outer diameter segment along the axis of the medical implant, the second outer diameter segment includes at least three bends, and a second fluid-blocking portion is provided between two adjacent bends.

[0017] The limiting segment has multiple petal-shaped structures, and the limiting segment is a monolayer composed of multiple petal-shaped structures. The multiple petal-shaped structures are arranged along the circumference of the medical implant, and the petal-shaped structures partially overlap with their adjacent petal-shaped structures to form the monolayer.

[0018] In the projection along the axial direction of the medical implant, the area of ​​the flap-like structure is between 3 mm². 2 ~80mm 2 Between these two ranges, the ratio of the overlapping area of ​​the petal structure to its adjacent petal structure is between [a certain range].

[0019] The medical implant is provided with a third fluid-blocking fluid, which is located on the side of the limiting segment away from the embolization segment;

[0020] The ratio of the projected area of ​​the third fluid-blocking component along the axial direction of the medical implant to the projected area of ​​the limiting segment along the axial direction of the medical implant is between... And / or, the thickness of the limiting segment is between 0.25 mm and 0.6 mm, and the thickness of the third barrier fluid is between 0.1 mm and 0.3 mm; and / or, the third barrier fluid is made of a biodegradable material, and the third barrier fluid has a meltblown mesh structure.

[0021] The wire is provided with one or more positioning components, each positioning component including two or more positioning parts, the free ends of the positioning parts being positioned away from the wire.

[0022] When the number of positioning components is two or more, the length of the wire between two adjacent positioning components is between 5mm and 100mm.

[0023] And / or, the distance between the free end of the positioning part and the wire is between 0.05mm and 1mm;

[0024] And / or, the outer diameter of the positioning part gradually decreases in the direction away from the wire;

[0025] And / or, the plurality of said positioning parts are arranged in a ring array in the projection of the medical implant along the axial direction;

[0026] And / or, the positioning part is located on the side of the wire away from the axis of the medical implant; or the positioning part includes a sub-positioning part one and a sub-positioning part two, the sub-positioning part one and the sub-positioning part two are disposed opposite to each other on both sides of the wire, the distance between the free end of the sub-positioning part one and the wire is between 0.05mm and 1mm, and the distance between the free end of the sub-positioning part two and the wire is between 0.05mm and 1mm.

[0027] The first outer diameter section is provided with a developing element, which is arranged around the outer periphery of the first outer diameter section;

[0028] The developing element is located close to the limiting section, and the distance between the developing element and the limiting section is between 0.4 mm and 5 mm.

[0029] Secondly, the present invention provides a fabrication jig for medical implants, used for fabricating any of the medical implants described above, comprising:

[0030] support;

[0031] A first weaving section is movably mounted on the bracket, and a first end of the first weaving section is provided with a plurality of radial protrusions (A1, A2...A...). 2n And a first gap (a1, a2...a1) is formed between two adjacent radial protrusions. 2n The second end of the first weaving section is also provided with multiple radial protrusions (B1, B2...B...). 2n Furthermore, a second gap (b1, b2...b) is formed between two adjacent radial protrusions. 2n );

[0032] The second weaving section is movably mounted on the bracket and is located near the first end of the first weaving section. The second weaving section is provided with multiple axial protruding column assemblies (C1, C2...C...). n );

[0033] The third braiding section is movably mounted on the bracket and is located near the second end of the first braiding section. The third braiding section also has multiple axial protrusion assemblies (D1, D2...D...). n ).

[0034] Thirdly, the present invention provides a method for fabricating medical implants, using the aforementioned medical implant fabrication jig, the method comprising:

[0035] Assemble the first, second, and third weaving sections based on the dimensions of the medical implant to be woven;

[0036] One end of the wire is fixed to the first braiding section, and the other end of the wire is arranged in the pattern a1, C1, a4, b1, D1, b4, a3, C2, a6, b3, D2, b6...a 2(n-1)-1 C n-1 a 2n b 2(n-1)-1 D n-1 b 2n a 2n-1 C n a2, b 2n-1 D n The wires, in the order of b2, pass through multiple radial protrusions and multiple axial protrusion assemblies to form a mesh braided body; wherein, the wires between the radial protrusions at the first end of the first braided part and the radial protrusions at the second end of the first braided part are wound around the outer periphery of the first braided part; wherein, during the braiding process, the wires interweave and pass through the braided paths.

[0037] The woven jig is removed, and the mesh woven body is inserted into the shaping jig for shaping to obtain the medical implant.

[0038] This application has at least the following beneficial effects:

[0039] This application provides a medical implant made of wire, having an embolization segment and two limiting segments. The two ends of the embolization segment are respectively connected to the two limiting segments. The embolization segment includes a first outer diameter segment and a second outer diameter segment. In the projection of the medical implant along the axial direction, the first outer diameter segment has a first outer diameter L1, the second outer diameter segment has a second outer diameter L2, and the limiting segment has a third outer diameter L3; wherein, L1 < L2 < L3.

[0040] This application provides a fabrication jig for a medical implant, used in the aforementioned medical implant, comprising: a support; a first fabrication section, the first fabrication section being movably disposed on the support, and a plurality of radial protrusions (A1, A2...A1) being provided at a first end of the first fabrication section. 2n And a first gap (a1, a2...a1) is formed between two adjacent radial protrusions. 2n The second end of the first weaving section is also provided with multiple radial protrusions (B1, B2...B...). 2n Furthermore, a second gap (b1, b2...b) is formed between two adjacent radial protrusions. 2n The second weaving section is movably mounted on the support and is located near the first end of the first weaving section. The second weaving section is equipped with multiple axial protruding column assemblies (C1, C2...C...). n The third weaving section is movably mounted on the support and is located near the second end of the first weaving section. The third weaving section also has multiple axial protruding column assemblies (D1, D2...D...). n ).

[0041] This application provides a method for fabricating medical implants, using a fabrication jig for medical implants as described above. The method includes: assembling a first fabrication section, a second fabrication section, and a third fabrication section based on the dimensions of the medical implant to be fabricated; fixing one end of a wire to the first fabrication section, and arranging the other end of the wire according to a1, C1, a4, b1, D1, b4, a3, C2, a6, b3, D2, b6...a 2(n-1)-1 C n-1 a 2n b 2(n-1)-1 D n-1 b 2n a 2n-1 C n a2, b 2n-1 D n The wires, in the order of b2, pass through multiple radial protrusions and multiple axial protrusion assemblies to form a mesh braided body; wherein, the wires between the radial protrusions at the first end of the first braided part and the radial protrusions at the second end of the first braided part are wound around the outer periphery of the first braided part; wherein, during the braiding process, the wires interweave and pass through the braided paths; the braiding fixture is removed, and the mesh braided body is inserted into the shaping fixture for shaping to obtain a medical implant.

[0042] The medical implant of this application increases the local outer diameter of the embolization segment by designing the outer diameters of the first and second outer diameter segments. This increases the contact points / contact surfaces between the embolization segment and the site to be sealed, ensuring close contact between the implant and the site, thereby improving the sealing effect. Simultaneously, the implant forms a strong structural connection with the site, enhancing its stability and preventing displacement under stress or pressure changes (e.g., blood flow), thus ensuring the durability and stability of the sealing effect. Furthermore, the implant can better adapt to complex or irregularly shaped sites, ensuring the integrity of the sealing and further improving its sealing effect.

[0043] The medical implant of this application, through the design of the outer diameter of the first outer diameter segment and the limiting segment, enables the limiting segment to have a larger outer diameter, providing better support and stronger structural strength. This allows it to adapt to occlusion environments under different pressures and to be permanently engaged at the end of the site to be occluded, ensuring the durability and stability of the occlusion effect. Simultaneously, it can adapt to occlusion sites with different end shapes, achieving full coverage of the end of the site to be occluded, further improving the occlusion effect and thus reducing complications caused by incomplete occlusion.

[0044] The medical implant of this application, through the design of the outer diameter of the second outer diameter segment and the limiting segment, enables the medical implant to block complex or irregular shapes of the blockage site and to adapt to different end shapes of the blockage site, and to be permanently locked at the end of the blockage site, thereby achieving a dual improvement in the blocking performance and stability of the medical implant.

[0045] The medical implant of this application, through the design of the outer diameters of the first outer diameter segment, the second outer diameter segment, and the limiting segment, makes the overall structure of the medical implant coordinated and unified, which is convenient for delivery by the delivery system; at the same time, it helps to enhance the stability of the structure, so that it can better resist deformation and damage when subjected to external forces, and can prevent the medical implant from shifting. Attached Figure Description

[0046] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0047] Figure 1 This is a schematic diagram of the structure of the medical implant provided in this embodiment. Figure 1 ;

[0048] Figure 2 This is a schematic diagram of the structure of the medical implant provided in this embodiment. Figure 2 ;

[0049] Figure 3 This is a schematic diagram of the structure of the medical implant provided in this embodiment. Figure 3 ;

[0050] Figure 4 This is a cross-sectional schematic diagram of the medical implant provided in this embodiment;

[0051] Figure 5 This is a schematic diagram of the projection of the second outer diameter segment onto the X-axis of the medical implant, as provided in this embodiment.

[0052] Figure 6 This is a schematic diagram of the projection of the medical implant provided in this embodiment along the X-axis of the medical implant;

[0053] Figure 7 This is a schematic diagram of the wire structure of the medical implant provided in this embodiment;

[0054] Figure 8 This is a schematic diagram of the structure of the fabrication jig provided in this embodiment;

[0055] Figure 9 for Figure 8 A magnified view of a portion of region A in the middle;

[0056] Figure 10 This is an exploded view of the fabrication jig provided in this embodiment;

[0057] Figure 11 for Figure 10 A magnified view of a portion of region B in the middle;

[0058] Figure 12 for Figure 10 A magnified view of a portion of region C in the middle;

[0059] Figure 13 This is a schematic diagram of the structure of the mesh-woven body provided in this embodiment;

[0060] Figure 14 This is a schematic diagram of the shaping fixture provided in this embodiment;

[0061] Figure 15 This is a schematic diagram of the structure of the medical implant provided in this embodiment. Figure 4 .

[0062] Figure label:

[0063] 1-Embryo-blocking section; 2-Limiting section; 3-First fluid-blocking section; 4-Second fluid-blocking section; 5-Third fluid-blocking section; 6-Developing element; 7-Wire; 8-Weaving fixture; 9-Shaping fixture; 11-First outer diameter section; 12-Second outer diameter section; 21-Petal structure; 71-Positioning component; 72-Mesh braiding body; 73-Cross structure; 81-First braiding section; 82-Second braiding section; 83-Third braiding section; 84-Support; 85-Axial convex column assembly; 86-Radial convex column assembly Column; 111-First outer diameter segment one; 112-First outer diameter segment two; 121-Curved edge; 122-Contact part; 123-Bending part; 711-Positioning part; 811-First end of first braided part; 812-Second end of first braided part; 851-Axial protruding column; 7111-Free end of positioning part; 7112-Sub-positioning part one; 7113-Sub-positioning part two; L1-First outer diameter; L2-Second outer diameter; L3-Third outer diameter; X-Axis of medical implant. Detailed Implementation

[0064] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0065] In the description of this application, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and 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 this application.

[0066] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0067] like Figures 1 to 7 As shown, this embodiment provides a medical implant, which is made of wire 7 and has an embolization section 1 and two limiting sections 2. The two ends of the embolization section 1 are respectively connected to the two limiting sections 2. The embolization section 1 includes a first outer diameter section 11 and a second outer diameter section 12.

[0068] In the projection of the medical implant along the X-axis, the first outer diameter segment 11 has a first outer diameter L1, the second outer diameter segment 12 has a second outer diameter L2, and the limiting segment 2 has a third outer diameter L3; wherein, L1 < L2 < L3.

[0069] This embodiment increases the local outer diameter of the embolization segment 1 by designing the outer diameters of the first outer diameter segment 11 and the second outer diameter segment 12. This increases the contact points / contact surfaces between the embolization segment 1 and the site to be sealed, ensuring close contact between the medical implant and the site, thereby improving the sealing effect. Simultaneously, it allows for a strong structural connection between the medical implant and the site, improving the stability of the implant and preventing displacement under stress or pressure changes (e.g., blood flow), thus ensuring the durability and stability of the sealing effect. Furthermore, it allows the medical implant to better adapt to complex or irregularly shaped sites, ensuring the integrity of the sealing and further improving the sealing effect.

[0070] This embodiment designs the outer diameters of the first outer diameter segment 11 and the limiting segment 2, resulting in a larger outer diameter for the limiting segment 2. This provides better support and stronger structural strength, allowing it to adapt to sealing environments under different pressures and to be permanently engaged with the end of the part to be sealed, ensuring the durability and stability of the sealing effect. Simultaneously, it can adapt to sealing parts with different end shapes, achieving full coverage of the end of the part to be sealed, further improving the sealing effect and reducing complications caused by incomplete sealing.

[0071] This embodiment designs the outer diameter of the second outer diameter segment 12 and the limiting segment 2 so that the medical implant can block complex or irregular shapes of the parts to be blocked and can adapt to different end shapes of the parts to be blocked, and can be permanently locked at the end of the parts to be blocked, thus achieving a dual improvement in the blocking performance and stability of the medical implant.

[0072] This embodiment, through the design of the outer diameters of the first outer diameter segment 11, the second outer diameter segment 12, and the limiting segment 2, makes the overall structure of the medical implant coordinated and unified, facilitating delivery by the delivery system; at the same time, it helps to enhance the stability of the structure, enabling it to better resist deformation and damage when subjected to external forces, and to prevent displacement of the medical implant.

[0073] In an embodiment of the present invention, In another embodiment of the invention,

[0074] In an embodiment of the present invention, In another embodiment of the invention,

[0075] In an embodiment of the present invention, In another embodiment of the invention,

[0076] In embodiments of the present invention, the length of the medical implant in the X-axis direction is between 10 mm and 60 mm.

[0077] In an embodiment of the present invention, the wire 7 is made of a biodegradable material, specifically a biodegradable PDO monofilament, but is not limited thereto.

[0078] In an embodiment of the present invention, the limiting segment 2 is disc-shaped and is engaged with the end of the part to be sealed.

[0079] In an embodiment of the present invention, the limiting segment 2 is a single-layer structure.

[0080] In various interventional embolization procedures, such as vascular occlusion, the unique design of the single-layered limiting segment 2, compared to the traditional double-layered disc-shaped segment, offers greater flexibility, allowing it to better adapt to the natural shape and movement of the blood vessel, especially when facing thinner vessel walls or irregularly shaped vascular lumens. Furthermore, the increased flexibility of the single-layered limiting segment 2 not only enhances its adaptability within the vessel but also helps reduce damage to the vessel wall, thereby lowering the likelihood of postoperative thrombosis.

[0081] Furthermore, the monolayer structure of the limiting segment 2 accelerates its endothelialization process within the patient's body. This means that vascular endothelial cells can more quickly cover the network surface, forming a protective endothelial layer. This helps prevent platelet aggregation and thrombus formation, while also promoting vascular healing. This contributes to reducing the risk of postoperative complications and accelerating the patient's recovery.

[0082] Therefore, in practical applications, the limiting segment 2 is a single-layer structure, which can provide better in vivo adaptability and faster endothelialization, helping to improve the success rate of surgery and bring better postoperative results to patients.

[0083] like Figure 5 As shown, in an embodiment of the present invention, the projection of the second outer diameter segment 12 in the X-direction of the medical implant includes at least one curved edge 121. The present invention provides the second outer diameter segment 12 with a curved surface, reducing the sharpness of the second outer diameter segment 12, allowing the medical implant to better conform to the site to be sealed via the second outer diameter segment 12, and increasing the contact area between the second outer diameter segment 12 and the site to be sealed.

[0084] In an embodiment of the present invention, in the projection along the X-axis of the medical implant, such as Figure 5As shown in Figure A, the second outer diameter segment 12 has one arc-shaped edge 121, and the arc of the arc-shaped edge 121 is 2π. This embodiment makes the outer periphery of the second outer diameter segment 12 circular in the projection along the X-axis of the medical implant. Therefore, the medical implant can distribute pressure evenly when under stress, reducing the risk of damage due to stress concentration. Simultaneously, it allows for complete fit to the area to be sealed, forming an effective seal and preventing blood leakage.

[0085] like Figure 2 As shown, in an embodiment of the present invention, the two ends of the first outer diameter segment 11 are a first outer diameter segment 111 and a first outer diameter segment 112. The first outer diameter segment 111 and the first outer diameter segment 112 are respectively connected to two limiting segments 2. The middle part of the first outer diameter segment 11 (i.e., the first outer diameter segment 11 located between the first outer diameter segment 111 and the first outer diameter segment 112) is wound along the axis X of the medical implant to form a second outer diameter segment 12.

[0086] Specifically, the second outer diameter segment 12 is spiral-shaped.

[0087] In this embodiment, the middle part of the first outer diameter segment 11 is wound along the axis X of the medical implant to form a spiral second outer diameter segment 12, which increases the contact points and contact surfaces between the second outer diameter segment 12 and the part to be sealed, thereby increasing the friction between the second outer diameter segment 12 and the part to be sealed, further improving the stability of the medical implant during sealing, and ensuring the durability and safety of the sealing.

[0088] Secondly, the second outer diameter segment 12 in this embodiment is spiral-shaped. Therefore, the gaps in the spiral structure of the second outer diameter segment 12 help promote the endothelialization process of the site to be sealed, and accelerate tissue healing and recovery. Furthermore, the gaps in the second outer diameter segment 12 can form a clearance space, so it can flexibly adjust its structure to adapt to different sites to be sealed according to the shape of the site to be sealed, ensuring precise fit to the site to be sealed and greatly improving the sealing effect.

[0089] Furthermore, this embodiment allows for the selection of the number of turns of the first outer diameter segment 11 wound along the axis X of the medical implant, thereby adjusting the length of the second outer diameter segment 12 to accommodate different lengths of the sealing site, thus expanding the applicability of the medical implant.

[0090] Furthermore, in this embodiment, the middle part of the first outer diameter segment 11 is wound along the axis X of the medical implant to form a spiral second outer diameter segment 12, so that the first outer diameter segment 11 and the second outer diameter segment 12 are integrally formed, which simplifies the processing and reduces the production difficulty.

[0091] In another embodiment of the present invention, the two ends of the first outer diameter segment 11 are a first outer diameter segment 111 and a first outer diameter segment 112, the first outer diameter segment 111 and the first outer diameter segment 112 are respectively connected to two limiting segments 2, and the middle part of the first outer diameter segment 11 (i.e. the first outer diameter segment 11 located between the first outer diameter segment 111 and the first outer diameter segment 112) protrudes radially to form a second outer diameter segment 12.

[0092] In this embodiment, the second outer diameter segment 12 is formed by a radial protrusion in the middle of the first outer diameter segment 11. This increases the contact points and contact surface between the second outer diameter segment 12 and the area to be sealed, thereby increasing the friction between the second outer diameter segment 12 and the area to be sealed. This further improves the stability of the medical implant during sealing, ensuring the durability and safety of the sealing. Furthermore, the first outer diameter segment 11 and the second outer diameter segment 12 are integrally formed, simplifying the processing and reducing production difficulty.

[0093] In another embodiment of the present invention, two or more contact portions 122 are provided in the middle of the first outer diameter segment 11, and the two or more contact portions 122 are arranged circumferentially along the middle of the first outer diameter segment 11 to form a second outer diameter segment 12. In the projection of the medical implant along the X-axis, two adjacent contact portions 122 partially overlap, so that the arc of the arc edge 121 of the second outer diameter segment 12 is 2π.

[0094] In this embodiment, by setting two or more contact portions 122 in the middle of the first outer diameter section 11 to form the second outer diameter section 12, the contact points and contact surfaces between the second outer diameter section 12 and the part to be sealed are increased, thereby increasing the friction between the second outer diameter section 12 and the part to be sealed, further improving the stability of the medical implant during sealing, and ensuring the durability and safety of the sealing.

[0095] In another embodiment of the invention, such as Figure 5 As shown in Figure B, in the projection along the X-axis of the medical implant, the second outer diameter segment 12 has two arcuate edges 121. These two arcuate edges 121 are symmetrically arranged with respect to the X-axis of the medical implant, and the curvature of the arcuate edges 121 is between... between.

[0096] This embodiment arranges the two curved edges 121 symmetrically with respect to the axis X of the medical implant, thus enabling uniform pressure distribution under stress and reducing the risk of damage to the medical implant due to stress concentration. Simultaneously, the curvature of the two or more curved edges 121 is between... The space between the two outer diameter sections allows the second outer diameter section 12 to block the area to be blocked over a larger area, improving the blocking effect of the embolization section 1 on the area to be blocked and helping to reduce the risk of blood leakage.

[0097] In an embodiment of the present invention, the two curved edges 121 are symmetrically arranged with respect to the axis X of the medical implant, and the curvature of the curved edges 121 is between between.

[0098] In another embodiment of the invention, such as Figure 5 As shown in Figure B, two contact portions 122 are provided in the middle of the first outer diameter segment 11. The two contact portions 122 are symmetrically arranged along the first outer diameter segment 11 to form the second outer diameter segment 12. In the projection of the medical implant along the X-axis, the contact portion 122 has an arc edge 121, and the curvature of the arc edge 121 is between... between.

[0099] This embodiment increases the contact points and contact surfaces between the second outer diameter section 12 and the part to be sealed by setting two symmetrically arranged contact portions 122 in the middle of the first outer diameter section 11. This increases the friction between the second outer diameter section 12 and the part to be sealed, further improving the stability of the medical implant during sealing and ensuring the durability and safety of the sealing. In addition, the contact portions 122 have a large arc-shaped surface, which allows the second outer diameter section 12 to seal the part to be sealed over a larger area, improving the sealing effect of the embolization section 1 on the part to be sealed and helping to reduce the risk of blood leakage.

[0100] In another embodiment of the invention, such as Figure 5 As shown in Figure C, in the projection along the X-axis of the medical implant, the second outer diameter segment 12 has three or more arc-shaped edges 121. These three or more arc-shaped edges 121 are arranged in a circular array relative to the X-axis of the medical implant, and the curvature of the arc-shaped edges 121 is between... between.

[0101] This embodiment arranges three or more curved edges 121 in a circular array relative to the axis X of the medical implant, thus enabling uniform pressure distribution when the medical implant is subjected to force, reducing the risk of damage to the medical implant due to stress concentration. Simultaneously, the curvature of the three or more curved edges 121 is all within... The space between the two outer diameter sections allows the second outer diameter section 12 to block the area to be blocked over a larger area, improving the blocking effect of the embolization section 1 on the area to be blocked and helping to reduce the risk of blood leakage.

[0102] In another embodiment of the invention, such as Figure 5 As shown in Figure C, three or more contact portions 122 are provided in the middle of the first outer diameter segment 11. The three or more contact portions 122 are arranged in a ring array along the outer periphery of the first outer diameter segment 11 to form a second outer diameter segment 12. In the projection of the medical implant along the X-axis, the contact portion 122 has an arc edge 121, and the curvature of the arc edge 121 is between... Between them.

[0103] This embodiment increases the number of contact points and contact surfaces between the second outer diameter section 12 and the part to be sealed by providing three or more contact portions 122 in the middle of the first outer diameter section 11. This increases the friction between the second outer diameter section 12 and the part to be sealed, further improving the stability of the medical implant during sealing and ensuring the durability and safety of the sealing. In addition, all three or more contact portions 122 have arc-shaped surfaces, which allows the second outer diameter section 12 to seal the part to be sealed over a larger area, improving the sealing effect of the embolization section 1 on the part to be sealed and helping to reduce the risk of blood leakage.

[0104] like Figure 4 As shown, in an embodiment of the present invention, the medical implant is provided with a first fluid-blocking fluid 3 and a second fluid-blocking fluid 4. The first fluid-blocking fluid 3 is located within the first outer diameter segment 11, and the second fluid-blocking fluid 4 is located within the second outer diameter segment 12. This embodiment, by providing the first fluid-blocking fluid 3 and the second fluid-blocking fluid 4, increases the ability of the embolization segment 1 to block abnormal blood flow, further improving the sealing effect of the medical implant.

[0105] In embodiments of the present invention, both the first fluid barrier 3 and the second fluid barrier 4 are made of biodegradable materials. Specifically, both the first fluid barrier 3 and the second fluid barrier 4 are made of poly(L-lactide-co-ε-caprolactone), but are not limited thereto.

[0106] In an embodiment of the present invention, when the second outer diameter segment 12 is formed by winding the middle part of the first outer diameter segment 11 along the axis X of the medical implant, the second outer diameter segment 12 includes at least three bends 123, and a second flow barrier 4 is provided between two adjacent bends 123.

[0107] This invention, by providing a second fluid-blocking fluid 4 between two adjacent bends 123, enhances the ability of the second outer diameter segment 12 to block abnormal blood flow, thereby improving the accuracy and effectiveness of the sealing. Simultaneously, the second fluid-blocking fluid 4 provides a stable growth environment for endothelial cells, accelerating tissue healing. Furthermore, since the fluid-blocking fluid is not located at the bend, the second outer diameter segment 12 retains good flexibility, allowing it to flexibly adjust its structure to adapt to different sealing sites, ensuring precise fit and significantly improving the sealing effect.

[0108] like Figure 1 and Figure 12 As shown, in an embodiment of the present invention, the limiting segment 2 is a monolayer composed of multiple petal-shaped structures 21. The multiple petal-shaped structures 21 are arranged along the circumference of the medical implant, and the petal-shaped structures 21 partially overlap with their adjacent petal-shaped structures 21 to form the monolayer.

[0109] The limiting segment 2 provided in this embodiment is a single-layer body composed of multiple valve-like structures 21. Compared with the traditional double-layered disc-shaped body, it has greater flexibility, allowing the medical implant to better adapt to the natural shape and movement of tissues in the body, especially when facing relatively thin tissue walls or irregularly shaped defects. Moreover, it helps to reduce the damage to the tissue wall caused by the limiting segment 2, thereby reducing the possibility of postoperative thrombosis.

[0110] Furthermore, the monolayer structure of the limiting segment 2 accelerates its endothelialization process within the patient's body, allowing vascular endothelial cells to more quickly cover the network surface and form a protective endothelial layer. This helps prevent platelet aggregation and thrombus formation, while also promoting vascular healing. This contributes to reducing the risk of postoperative complications and accelerating the patient's recovery.

[0111] This embodiment achieves this by partially overlapping the valve-like structure 21 with its adjacent valve-like structures 21, creating a stable support structure between the two adjacent valve-like structures 21. This improves the structural strength of the limiting segment 2, enabling it to withstand greater pressure and reducing the risk of deformation and displacement caused by heartbeats or blood flow. Simultaneously, prolonged heartbeats and blood flow generate continuous fatigue stress on the limiting segment 2. This embodiment addresses this by partially overlapping the valve-like structure 21 with its adjacent valve-like structures to disperse this fatigue stress, thereby improving the fatigue resistance of the limiting segment 2 and ensuring its long-term stability and reliability.

[0112] Specifically, in the projection along the X-axis of the medical implant, the area of ​​the flap structure 21 is between 3 mm². 2 ~80mm 2 The ratio of the overlapping area of ​​the petal structure 21 and its adjacent petal structure 21 is between

[0113] In this embodiment, the area of ​​the petal structure 21 is between 3 mm². 2 ~80mm 2 This is to avoid the valve structure 21 being too large, which would result in an excessively large outer diameter of the limiting segment 2, leading to an excessively large overall volume of the medical implant and making delivery inconvenient; at the same time, it is to avoid the valve structure 21 being too small, which would result in an excessively small outer diameter of the limiting segment 2, leading to poor stability of the limiting segment 2 and displacement of the medical implant.

[0114] Furthermore, in this embodiment, the ratio of the overlapping area of ​​the petal structure 21 and its adjacent petal structure 21 is between... To avoid excessive overlap of adjacent valve-like structures 21, which would result in poor flexibility of the limiting segment 2 and thus inconvenience in delivery of medical implants; and at the same time to avoid excessive overlap of adjacent valve-like structures 21, which would result in poor structural stability of the limiting segment 2 and thus displacement of medical implants.

[0115] In an embodiment of the present invention, the ratio of the overlapping area of ​​the petal structure 21 to its adjacent petal structure 21 is between

[0116] like Figure 1 , 2 As shown in Figures 4 and 6, in an embodiment of the present invention, the medical implant is provided with a third fluid-blocking component 5, which is located on the side of the limiting segment 2 away from the embolization segment 1. This embodiment, by providing the third fluid-blocking component 5, increases the ability of the limiting segment 2 to block abnormal blood flow, further improving the sealing effect of the medical implant.

[0117] In embodiments of the present invention, such as Figure 6 As shown, the ratio of the projected area of ​​the third fluid-blocking segment 5 in the X-axis direction of the medical implant to the projected area of ​​the limiting segment 2 in the X-axis direction of the medical implant is between... This embodiment further increases the ability of the limiting segment 2 to block abnormal fluid by making the third fluid-blocking fluid 5 completely cover or cover most of the limiting segment 2, thereby further improving the sealing effect of the medical implant.

[0118] In an embodiment of the present invention, the thickness of the limiting segment 2 is between 0.25 mm and 0.6 mm, and the thickness of the third fluid-blocking element 5 is between 0.1 mm and 0.3 mm. This embodiment increases the thickness of the limiting segment 2 by providing the third fluid-blocking element 5, thereby improving the structural strength of the limiting segment 2, enabling it to withstand greater pressure, and reducing the risk of deformation and displacement caused by heartbeats or blood flow.

[0119] In embodiments of the present invention, the third fluid barrier 5 is made of a biodegradable material. Specifically, the third fluid barrier 5 is made of poly(L-lactide-co-ε-caprolactone), but is not limited thereto.

[0120] In an embodiment of the present invention, the third flow barrier 5 is a meltblown mesh structure.

[0121] In an embodiment of the present invention, the ratio of the projected area of ​​the third fluid-blocking segment 5 in the X-axis direction of the medical implant to the projected area of ​​the limiting segment 2 in the X-axis direction of the medical implant is between...

[0122] In an embodiment of the present invention, when the ratio of the projected area of ​​the third blocking fluid 5 in the X-axis direction of the medical implant to the projected area of ​​the limiting segment 2 in the X-axis direction of the medical implant is greater than 1, the edge of the third blocking fluid 5 is folded over to surround the outer periphery of the limiting segment 2, thereby increasing the fixing strength between the third blocking fluid 5 and the limiting segment 2, preventing the third blocking fluid 5 on the limiting segment 2 from falling off, and thus weakening the sealing effect of the medical implant.

[0123] like Figure 7 As shown, in an embodiment of the present invention, one or more positioning components 71 are provided on the wire 7. The positioning component 71 includes two or more positioning parts 711, and the free end 7111 of the positioning part is arranged in a direction away from the wire 7.

[0124] This embodiment increases the physical contact area between the medical implant and the site to be sealed by setting the positioning part 711, thereby providing a stronger anchoring effect; at the same time, by increasing the friction between the medical implant and the site to be sealed, the medical implant is less likely to be pushed by blood flow or heart movement; therefore, this embodiment helps to ensure that the medical implant maintains a stable position in the heart and reduces the risk of displacement of the medical implant due to heartbeat or blood flow.

[0125] In embodiments of the present invention, the number of positioning components 71 is two or more, and the length of the wire 7 between two adjacent positioning components 71 is between 5mm and 100mm. This embodiment avoids excessive density of positioning components 7 on the wire, reducing the difficulty of wire braiding.

[0126] In an embodiment of the present invention, the distance between the free end 7111 of the positioning part and the wire 7 is between 0.05 mm and 1 mm.

[0127] In embodiments of the present invention, the number of positioning parts 711 in each positioning component 71 is between 5 and 10.

[0128] In embodiments of the present invention, such as Figure 7 As shown, the outer diameter of the positioning part 711 gradually decreases in the direction away from the wire 7. This embodiment facilitates stable contact between the positioning part 711 and the part to be sealed, thereby providing a stronger anchoring effect.

[0129] In an embodiment of the present invention, a plurality of positioning parts 711 are arranged in a circular array in the projection of the medical implant along the X-axis. This embodiment makes the plurality of positioning parts 711 evenly distributed in the circumferential direction of the medical implant, thereby further enhancing the anchoring effect and further increasing the friction between the medical implant and the site to be sealed.

[0130] In an embodiment of the invention, the positioning part 711 is located on the side of the wire 7 away from the axis X of the medical implant. This embodiment facilitates contact between the positioning part 711 and the site to be sealed, thereby providing a stronger anchoring effect and increasing the friction between the medical implant and the site to be sealed.

[0131] In another embodiment of the present invention, the positioning part 711 includes a first sub-positioning part 7112 and a second sub-positioning part 7113, which are disposed opposite to each other on both sides of the wire 7. The distance between the free end of the first sub-positioning part 7112 and the wire 7 is between 0.05 mm and 1 mm, and the distance between the free end of the second sub-positioning part 7113 and the wire 7 is also between 0.05 mm and 1 mm. This embodiment reduces the difficulty of weaving the wire 7 into a medical implant, while facilitating contact between the positioning part 711 and the site to be sealed.

[0132] like Figure 1-4 As shown, in an embodiment of the present invention, a imaging element 6 is provided on the first outer diameter segment 11, and the imaging element 6 is arranged around the outer periphery of the first outer diameter segment 11. In this embodiment, by providing the imaging element 6, it is convenient to position the medical implant during the operation. At the same time, the imaging element 6 increases the outer diameter of the first outer diameter segment 11 region, thereby improving the structural strength of the first outer diameter segment 11.

[0133] In this embodiment, the developing element 6 is close to the limiting section 2, and the distance between the developing element 6 and the limiting section 2 is between 0.4 mm and 5 mm. By placing the developing element 6 close to the limiting section 2 and surrounding the outer periphery of the first outer diameter section 11, the structural strength of the first outer diameter section 11 and the limiting section 2 is improved, thereby enhancing their resistance to deformation.

[0134] In embodiments of the present invention, the developing element 6 is made of a biodegradable material. Specifically, the developing element 6 is made of a biodegradable biomedical magnesium alloy material, but is not limited thereto.

[0135] like Figure 8-12 As shown, this embodiment also provides a medical implant fabrication jig 8 for fabricating the medical implant described in any of the above embodiments, including:

[0136] 84 brackets;

[0137] The first weaving section 81 is movably mounted on the bracket 84, and the first end 811 of the first weaving section is provided with a plurality of radial protrusions 86 (A1, A2...A...). 2n And a first gap (a1, a2...a1) is formed between two adjacent radial protrusions 86. 2n The second end 812 of the first weaving section is also provided with multiple radial protrusions 86 (B1, B2...B... 2n Furthermore, a second gap (b1, b2...b) is formed between two adjacent radial protrusions 86. 2n );

[0138] The second braiding section 82 is movably mounted on the bracket 84. The second braiding section 82 is close to the first end 811 of the first braiding section. The second braiding section 82 is provided with a plurality of axial protrusion assemblies 85 (C1, C2...C1). n );

[0139] The third weaving section 83 is movably mounted on the bracket 84. The third weaving section 83 is located near the second end 812 of the first weaving section. The third weaving section 83 is also provided with a plurality of axial protrusion assemblies 85 (D1, D2...D...). n ).

[0140] The medical implant obtained by the medical implant fabrication jig 8 provided in this embodiment can block complex or irregular shapes of the parts to be blocked, and can adapt to different end shapes of the parts to be blocked, and can be permanently locked onto the end of the parts to be blocked, thus achieving a dual improvement in the blocking performance and stability of the medical implant.

[0141] In an embodiment of the present invention, the first weaving section 81, the second weaving section 82 and the third weaving section 83 are movably disposed on the bracket 84 so that the weaver can weave a medical implant with an embolization segment 1 of a corresponding length according to actual production needs, thereby expanding the scope of application.

[0142] In an embodiment of the present invention, the first weaving part 81, the second weaving part 82 and the third weaving part 83 are detachably disposed on the bracket 84, which facilitates the weaver to install the corresponding first weaving part 81, the second weaving part 82 and the third weaving part 83 on the bracket 84 according to the size of the medical implant to be woven, thereby expanding the scope of application.

[0143] In an embodiment of the present invention, the radial protrusions 86 (A1, A2...A1) located at the first end 811 of the first weaving section are... 2n ) and the radial protrusions 86 (B1, B2...B) located at the second end 812 of the first fabrication section 2n The structure is consistent.

[0144] In an embodiment of the present invention, the axial protrusion assembly 85 (C1, C2...C...C...) located on the second weaving section 82 is... n ) and the axial protrusion assembly 85 (D1, D2...D) located on the third bracing section 83 n The structure is consistent.

[0145] In an embodiment of the present invention, the second weaving section 82 is provided with 8 to 20 axial protrusion assemblies 85.

[0146] In an embodiment of the present invention, the third weaving section 83 is provided with 8 to 20 axial protrusion assemblies 85.

[0147] In an embodiment of the present invention, the axial protruding post assembly 85 is detachably disposed on the second weaving section 82, so that the resulting mesh weaving body 72 can be detached from the second weaving section 82 after weaving is completed.

[0148] In an embodiment of the present invention, the axial protruding post assembly 85 is detachably disposed on the third weaving section 83, so that the resulting mesh weaving body 72 can be detached from the third weaving section 83 after weaving is completed.

[0149] like Figure 9 As shown, the axial protrusion assembly 85 includes three or more axial protrusions 851, so that the wire 7 is wound around the three or more axial protrusions 851 in sequence to form a petal structure 21.

[0150] In an embodiment of the present invention, the number of axial protrusions 851 in the axial protrusion assembly 85 is 2M+1, where M≥2. 2M+1 axial protrusions 851 are sequentially arranged on the second braiding section 82, so that the wire 7 is wound sequentially around the 2M+1 axial protrusions 851 to form a petal-shaped structure 21. The axial protrusions 851 of the axial protrusion assembly 85 are sorted in ascending order according to their distance from the center of the second braiding section 82, wherein the axial protrusion 851 with the sequence number M is a shared axial protrusion 851 of two adjacent axial protrusion assemblies 85. The structure of the axial protrusion assembly 85 on the third braiding section 83 is the same as that on the second braiding section 82, and will not be described again here.

[0151] like Figure 11 and 12 As shown, in an embodiment of the present invention, a plurality of radial protrusions 86 (A1, A2...A... 2n Multiple radial protrusions 86 (B1, B2...B1) are evenly distributed circumferentially along the first end 811 of the first weaving section. 2n The radial protruding column 86 structure is used to position the braided wire 7 and prevent the wire 7 from shifting and causing the braiding to become disordered.

[0152] Specifically, such as Figure 10 As shown, the wire 7 that does not bypass the axial protrusion assembly 85 and the wire 7 that bypasses the axial protrusion assembly 85 form a cross structure 73, and the cross structure 73 is located between the radial protrusion 86 and the axial protrusion assembly 85.

[0153] like Figure 8-15 As shown, this embodiment also provides a method for fabricating medical implants, using a fabrication jig 8 for medical implants as described in any of the above embodiments to fabricate the medical implants described in any of the above embodiments. The method includes:

[0154] Assemble the first weaving section 81, the second weaving section 82, and the third weaving section 83 based on the dimensions of the medical implant to be woven;

[0155] One end of the wire 7 is fixed to the first braiding section 81, and the other end of the wire 7 is arranged in the pattern a1, C1, a4, b1, D1, b4, a3, C2, a6, b3, D2, b6...a 2(n-1)-1 C n-1 a 2n b 2(n-1)-1 D n-1 b 2n a 2n-1 C n a2, b 2n-1 D n The wire 7 is arranged in the order of b2, passing through multiple radial protrusions 86 and multiple axial protrusion assemblies 85 to form a mesh braided body 72; wherein, the wire 7 located between the radial protrusions 86 at the first end 811 of the first braided part and the radial protrusions 86 at the second end 812 of the first braided part is wound around the outer periphery of the first braided part 81; wherein, during the braiding process, the wire 7 interweaves and passes through the braided paths.

[0156] Remove the woven jig 8, insert the mesh woven body 72 into the shaping jig 9 for shaping, and obtain the medical implant.

[0157] The medical implant prepared by the method provided in this embodiment can block complex or irregular shapes of the parts to be blocked, and can adapt to different end shapes of the parts to be blocked, and can be permanently attached to the end of the parts to be blocked, thus achieving a dual improvement in the blocking performance and stability of the medical implant.

[0158] Among them, after passing through a1, C1, and a4, the wire forms a petal-shaped structure in the limiting segment at the first end of the embolization segment, and after passing through b1, D1, and b4, the wire forms a petal-shaped structure in the limiting segment at the second end of the embolization segment.

[0159] Specifically, when n=10, the weaving order of the mesh is shown in the table below. The wires are woven in a zigzag pattern according to the table below, meaning the last wire in one row is adjacent to the first wire in the next row:

[0160] Table n=10 shows the weaving sequence of the mesh fabric.

[0161]

[0162]

[0163] In an embodiment of the present invention, "removing the woven jig 8, inserting the mesh woven body 72 into the shaping jig 9 for shaping, and obtaining a medical implant" includes:

[0164] The weaving jig 8 and the mesh weaving body 72 are heated at 80℃~100℃ for 10~60 minutes to pre-shape the mesh weaving body 72.

[0165] Remove the weaving jig, put the mesh weaving body 72 into the shaping jig 9 and heat it at 80℃~110℃ for 30~60 minutes to shape the mesh weaving body 72;

[0166] Remove the shaping fixture 9 to obtain the medical implant.

[0167] Note that the above description is merely a preferred embodiment and the technical principles employed in this application. Those skilled in the art will understand that this application is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of this application. Therefore, although this application has been described in detail through the above embodiments, this application is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of this application, and the scope of this application is determined by the scope of the appended claims.

[0168] The above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A medical implant, characterized in that, The medical implant is made of biodegradable wire and has an embolization section and two limiting sections. The two ends of the embolization section are respectively connected to the two limiting sections. The embolization section includes a first outer diameter section and a second outer diameter section. In the projection along the axial direction of the medical implant, the first outer diameter segment has a first outer diameter L1, the second outer diameter segment has a second outer diameter L2, and the limiting segment has a third outer diameter L3; wherein, L1 < L2 < L3; The projection of the second outer diameter segment onto the axial direction of the medical implant includes two or more curved sides; when the number of curved sides is two, the two curved sides are symmetrically arranged with respect to the axis of the medical implant, and the curvature of the curved sides is between... Between; when the number of the arc edges is three or more, the three or more arc edges are arranged in a circular array relative to the axis of the medical implant, and the curvature of the arc edges is between between.

2. The medical implant according to claim 1, characterized in that, The first outer diameter segment is connected to the two limiting segments at both ends; the middle part of the first outer diameter segment is wound around the axis of the medical implant to form the second outer diameter segment; or, the middle part of the first outer diameter segment protrudes radially to form the second outer diameter segment; or, the middle part of the first outer diameter segment is provided with two or more contact parts, and the two or more contact parts are arranged circumferentially along the middle part of the first outer diameter segment to form the second outer diameter segment. And / or, the first outer diameter L1, the second outer diameter L2, and the third outer diameter L3 satisfy:

3. The medical implant according to claim 2, characterized in that, The medical implant is provided with a first fluid-blocking fluid and a second fluid-blocking fluid, wherein the first fluid-blocking fluid is located within the first outer diameter section and the second fluid-blocking fluid is located within the second outer diameter section; When the second outer diameter segment is formed by winding the middle part of the first outer diameter segment along the axis of the medical implant, the second outer diameter segment includes at least three bends, and a second fluid-blocking portion is provided between two adjacent bends.

4. The medical implant according to claim 1, characterized in that, The limiting segment is a monolayer composed of multiple valve-like structures, which are arranged circumferentially along the medical implant and partially overlap with their adjacent valve-like structures to form the monolayer. In the projection along the axial direction of the medical implant, the area of ​​the flap-like structure is between 3 mm². 2 ~80mm 2 Between these two ranges, the ratio of the overlapping area of ​​the petal structure to its adjacent petal structure is between [a certain range].

5. The medical implant according to claim 1, characterized in that, The medical implant is provided with a third fluid-blocking fluid, which is located on the side of the limiting segment away from the embolization segment; The ratio of the projected area of ​​the third fluid-blocking component along the axial direction of the medical implant to the projected area of ​​the limiting segment along the axial direction of the medical implant is between... And / or, the thickness of the limiting segment is between 0.25 mm and 0.6 mm, and the thickness of the third barrier fluid is between 0.1 mm and 0.3 mm; and / or, the third barrier fluid is made of a biodegradable material, and the third barrier fluid has a meltblown mesh structure.

6. The medical implant according to claim 1, characterized in that, The wire is provided with one or more positioning components; the positioning component includes two or more positioning parts, and the free ends of the positioning parts are arranged in a direction away from the wire.

7. The medical implant according to claim 6, characterized in that, The number of positioning components is two or more, and the length of the wire between two adjacent positioning components is between 5mm and 100mm. And / or, the distance between the free end of the positioning part and the wire is between 0.05mm and 1mm; And / or, the outer diameter of the positioning part gradually decreases in the direction away from the wire; And / or, the plurality of said positioning parts are arranged in a ring array in the projection of the medical implant along the axial direction; And / or, the positioning part is located on the side of the wire away from the axis of the medical implant; or the positioning part includes a sub-positioning part one and a sub-positioning part two, the sub-positioning part one and the sub-positioning part two are disposed opposite to each other on both sides of the wire, the distance between the free end of the sub-positioning part one and the wire is between 0.05mm and 1mm, and the distance between the free end of the sub-positioning part two and the wire is between 0.05mm and 1mm.

8. The medical implant according to claim 1, characterized in that, The first outer diameter section is provided with a developing element, which is arranged around the outer periphery of the first outer diameter section; The developing element is located close to the limiting section, and the distance between the developing element and the limiting section is between 0.4 mm and 5 mm.

9. A fabrication jig for medical implants, characterized in that, For preparing the medical implant according to any one of claims 1-8, comprising: support; A first weaving section is movably mounted on the bracket, and a first end of the first weaving section is provided with a plurality of radial protrusions A1, A2...A 2n And a first gap a1, a2...a is formed between two adjacent radial protrusions. 2n The second end of the first weaving section is also provided with multiple radial protrusions B1, B2...B 2n Furthermore, a second gap b1, b2...b is formed between two adjacent radial protrusions. 2n ; The second weaving section is movably mounted on the bracket and is located near the first end of the first weaving section. The second weaving section is provided with multiple axial protrusion assemblies C1, C2...C... n ; The third weaving section is movably mounted on the bracket and is located near the second end of the first weaving section. The third weaving section also has multiple axial protrusion assemblies D1, D2...D... n .

10. A method for fabricating a medical implant, characterized in that, The method of using the fabrication jig for medical implants as described in claim 9 includes: Assemble the first, second, and third weaving sections based on the dimensions of the medical implant to be woven; One end of the wire is fixed to the first braiding section, and the other end of the wire is arranged in the pattern a1, C1, a4, b1, D1, b4, a3, C2, a6, b3, D2, b6...a 2(n-1)-1 C n-1 a 2n b 2(n-1)-1 D n-1 b 2n a 2n-1 C n a2, b 2n-1 D n The wires, in the order of b2, pass through multiple radial protrusions and multiple axial protrusion assemblies to form a mesh braided body; wherein, the wires between the radial protrusions at the first end of the first braided part and the radial protrusions at the second end of the first braided part are wound around the outer periphery of the first braided part; wherein, during the braiding process, the wires interweave and pass through the braided paths. The woven jig is removed, and the mesh woven body is inserted into the shaping jig for shaping to obtain the medical implant.

Images