Meniscus implant

Abstract

The invention provides a meniscus implant, and relates to the technical field of medical instruments, and the meniscus implant comprises an implant; the implant comprises an implant body and an implant periphery; a plurality of connecting holes; the connecting hole penetrates through the periphery of the implant and is used for guiding a suture line to penetrate through; and a reinforcing ring; the reinforcing ring is mounted in the connecting hole; the suture line penetrates through the connecting hole, so that the implant is fixedly connected with the edge of the native meniscus. According to the meniscus implant provided by the invention, the connecting hole is formed in the implant and the reinforcing ring is embedded in the hole, so that not only is a stable anchoring point provided for the implant, but also the suture line can be tightly attached to the reinforcing ring when penetrating through the implant, and direct friction with the surface of the implant is avoided, so that the incisura is reduced, and the service life of the implant is prolonged. And the service life of the implant is effectively prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a meniscus implant. Background Art

[0002] Meniscus is responsible for shock absorption, load transfer, lubrication and the stability of knee joint. Meniscus is important for reducing the incidence of degenerative joint disease. Unfortunately, after trauma or severe injury, the meniscus may be damaged, for example, due to formation of cracks in the meniscus. The damage of the meniscus is associated with the change of joint function, and these changes can cause disability and degenerative joint changes. One of the strategies for meniscus repair is to suggest the use of biocompatible synthetic or natural scaffolds as matrix to promote defective portion remodeling and healing. If cracks are too many, the meniscus may have to be trimmed to only the outer edge of the meniscus can be left. The meniscus implant made of synthetic or natural materials can be anchored to the edge, for example, via surgical sutures.

[0003] In the prior art, during the suturing process of the meniscus implant and the native meniscus, the use of sutures to penetrate the implant may form deep incisions or indentations on the material. Such damage may not only endanger the structural integrity of the implant and reduce its ability to withstand daily loads on the knee joint, but may also delay the healing process, increase the risk of postoperative complications, and ultimately affect the long-term stability and function of the knee joint. Summary of the invention

[0004] In order to solve the problem of deep notches caused by suturing a meniscus implant and a native meniscus in the prior art, the present invention provides a meniscus implant, which is provided with a connecting hole and a reinforcing ring inside the connecting hole, which not only enhances the anchoring stability of the implant, but also avoids direct friction between the suture line and the implant, thereby solving the problem of deep notches caused by suturing a meniscus implant and a native meniscus in the prior art.

[0005] The technical solution adopted by the present invention to solve the technical problem is: A meniscus implant, comprising: Implant; the implant comprises an implant body and an implant periphery; A plurality of connection holes; the connection holes run through the periphery of the implant and are used to guide sutures through; and a reinforcement ring; the reinforcement ring is installed inside the connecting hole; The suture thread passes through the connection hole to achieve fixed connection between the implant and the edge of the native meniscus.

[0006] Optionally, the periphery of the implant is a C-shaped structure; the periphery of the implant includes an upper periphery of the implant, a lower periphery of the implant and an outer periphery of the implant.

[0007] Optionally, the diameter of the connecting hole is 1 mm-1.5 mm.

[0008] Optionally, the outer diameter of the reinforcement ring is not greater than the inner diameter of the connecting hole.

[0009] Optionally, there are two reinforcement rings, which are respectively installed above and below the connecting hole.

[0010] Optionally, a plurality of said connection holes are equidistantly spaced apart along the periphery of said implant.

[0011] Optionally, the number of the connection holes is four, which are symmetrically distributed on the upper periphery of the implant and the lower periphery of the implant.

[0012] Optionally, the reinforcement ring is made of a biocompatible material.

[0013] Optionally, an elastic buffer layer is provided on the inner wall of the reinforcement ring.

[0014] Optionally, the implant is made of a material having a tensile elastic modulus Eci of minimum 10 MPa measured in the circumferential direction, a tensile elastic modulus Er of minimum 1 MPa measured in the radial direction, and a compressive elastic modulus Eco of minimum 0.1 MPa.

[0015] The beneficial effects of the present invention are: The meniscus implant provided by the present invention achieves a breakthrough improvement in traditional meniscus repair technology by opening connection holes on the implant and reinforcing rings embedded in the holes. These connection holes not only provide a stable anchoring point for the implant; but also the internal reinforcing ring design ensures that the suture can fit tightly with the reinforcing ring when passing through, avoiding direct friction with the implant surface, thereby reducing the notch and effectively extending the service life of the implant; in addition, this design also reduces the risk of patients needing another surgery due to implant damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 is a schematic structural diagram of a meniscus implant in the present invention; Figure 2 The diagram is a schematic diagram of the assembly of the meniscus implant and the edge of the native meniscus in the present invention. Figure 1 ; Figure 3 The diagram is a schematic diagram of the assembly of the meniscus implant and the edge of the native meniscus in the present invention. Figure 2 ; Figure 4is a top view of a meniscus implant of the present invention, with an indication of the measurement direction of the tensile elastic modulus; Figure 5 is along Figure 4 Cross-sectional view at AA in FIG. 5 , with an indication of the measurement direction of the compressive elastic modulus.

[0018] In the figure: 1-implant; 11-implant body; 12-implant periphery; 121-implant upper periphery; 122-implant lower periphery; 123-implant outer periphery; 2-connecting hole; 3-reinforcement ring; 31-elastic buffer layer; 4-suture line. DETAILED DESCRIPTION

[0019] The present invention is now further described in detail. The embodiments described below are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0021] In order to solve the problem of deep notching caused by suturing the meniscus implant and the native meniscus in the prior art, the present invention provides a meniscus implant, see Figure 1-Figure 3 As shown, the meniscus implant comprises: an implant 1; wherein the implant 1 comprises an implant body 11 and an implant periphery 12; A plurality of connecting holes 2; and the connecting holes 2 pass through the periphery 12 of the implant, for guiding the suture 4 to pass through; and a reinforcement ring 3; the reinforcement ring 3 is installed inside the connecting hole 2; The suture 4 passes through the connection hole 2 to achieve fixed connection between the implant 1 and the edge 5 of the native meniscus.

[0022] The meniscus implant provided by the present invention achieves a breakthrough improvement in the traditional meniscus repair technology by opening a connecting hole 2 on the implant 1 and a reinforcing ring 3 embedded in the hole. These connecting holes 2 not only provide a stable anchor point for the implant 1; but also the design of the reinforcing ring 3 inside it ensures that the suture 4 can fit tightly with the reinforcing ring 3 when passing through, avoiding direct friction with the surface of the implant 1, thereby reducing the notch and effectively extending the service life of the implant; in addition, this design also reduces the risk of patients needing another surgery due to implant damage.

[0023] In order to improve the stability and adaptability of the implant 1 in the meniscus, the present invention preferably has the implant periphery 12 in a C-shaped structure, which matches the natural contour of the native meniscus; and, preferably, the implant periphery 12 includes an implant upper periphery 121, an implant lower periphery 122, and an implant outer periphery 123.

[0024] The preferred diameter of the connection hole 2 of the present invention is 1 mm-1.5 mm; this size range allows the suture 4 to pass smoothly while maintaining sufficient peripheral strength to avoid damage to the structural integrity of the implant 1 due to the hole being too large.

[0025] In order to ensure that the reinforcement ring 3 can be adapted to the connecting hole 2, the present invention preferably has an outer diameter of the reinforcement ring 3 not greater than the inner diameter of the connecting hole 2; further, the present invention preferably has two reinforcement rings 3, which are respectively installed above and below the connecting hole 2, providing additional support points for the suture 4, effectively avoiding direct contact between the suture 4 and the implant 1, thereby reducing the indentation caused by the suture 4 on the implant 1; at the same time, the reinforcement ring 3 is not provided in the middle part of the connecting hole 2, leaving space, which can maintain the elasticity of the implant 1 in the middle part of the connecting hole 2, thereby maintaining the flexibility and adaptability of the implant 1, so that it can better adapt to different physiological conditions and movement requirements.

[0026] The present invention preferably has the plurality of connection holes 2 equidistantly spaced apart along the periphery 12 of the implant.

[0027] After distributing several connecting holes 2 equidistantly along the periphery 12 of the implant, starting from the connecting hole 2 at the outermost edge of the upper periphery 121 or the lower periphery 122 of the implant, guide the suture 4 to penetrate each connecting hole and the edge 5 of the native meniscus in turn to achieve balanced fixation of the implant 1 and the edge 5 of the native meniscus; finally, the suture is knotted and fixed at the edge 5 of the native meniscus to complete the entire implantation process.

[0028] This design can provide evenly distributed anchor points, which helps to achieve balanced fixation of the implant 1 and the native meniscus edge 5, avoid local stress concentration, and thus reduce the risk of damage to the implant 1 or surrounding tissues due to uneven force; in addition, this layout also facilitates the arrangement and adjustment of the sutures 4 during surgery, thereby improving the convenience of surgical operations and the reliability of the repair effect.

[0029] Furthermore, the present invention preferably has four connecting holes 2 symmetrically distributed on the upper periphery of the implant and the lower periphery 122 of the implant.

[0030] After the four connecting holes 2 are symmetrically distributed on the upper periphery 121 and the lower periphery 122 of the implant, start from the two connecting holes 2 at one end. After the suture 4 passes through the two holes and is connected to the edge 5 of the native meniscus, the first knot is tied to ensure initial fixation; then, the suture 4 is passed through the corresponding two connecting holes 2 at the other end, and the penetration and connection process is repeated. After completion, a second knot is tied to fix.

[0031] This arrangement of the connecting holes 2 can achieve effective fixation of the implant 1 and the native meniscus edge 5 with a minimum of connecting points; this design not only reduces the complexity of the operation and potential surgical trauma, but also maintains the structural integrity and mechanical properties of the implant 1 by reducing the number of connecting holes 2, and also reduces the invasiveness of the native meniscus edge 5; in addition, the four symmetrically distributed connecting holes 2 can also achieve uniform force distribution, thereby improving the stability and durability of the implant 1 and reducing the risk of postoperative complications.

[0032] In the present invention, the reinforcing ring 3 is preferably made of a biocompatible material; the biocompatible material is more friendly to the patient's immune system and can significantly reduce the immune response induced by the implant 1, thereby reducing the risk of postoperative inflammation and rejection.

[0033] Furthermore, the present invention preferably provides an elastic buffer layer 31 on the inner wall of the reinforcement ring 3, which provides a soft contact surface for the suture 4, significantly reduces the friction between the suture 4 and the reinforcement ring 3, helps to protect the structural integrity of the suture 4, and can more stably maintain the fixed state of the implant 1, thereby improving the reliability of the entire implant system and the success rate of the operation.

[0034] like Figure 4-5 As shown, the preferred implant 1 of the present invention can be made of a synthetic material such as polyurethane, which has a tensile elastic modulus Eci of a minimum of 10 MPa measured in the circumferential direction, a tensile elastic modulus Er of a minimum of 1 MPa measured in the radial direction, and a compressive elastic modulus Eco of a minimum of 0.1 MPa; these properties ensure that the implant 1 has appropriate flexibility and strength when subjected to physiological loads, can withstand the pressure generated by knee joint movement, and maintain long-term stability and durability.

[0035] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A meniscus implant, characterized in that: include: Implant (1); the implant (1) comprises an implant body (11) and an implant periphery (12); a plurality of connection holes (2); the connection holes (2) penetrate through the periphery of the implant (12) and are used to guide the sutures (4) to pass through; and a reinforcement ring (3); the reinforcement ring (3) is installed inside the connection hole (2); The suture thread (4) passes through the connection hole (2) to achieve a fixed connection between the implant (1) and the edge (5) of the native meniscus.

2. The meniscus implant according to claim 1, characterized in that: The implant periphery (12) is a C-shaped structure; the implant periphery (12) comprises an implant upper periphery (121), an implant lower periphery (122) and an implant outer periphery (123).

3. The meniscus implant according to claim 1, characterized in that: The diameter of the connecting hole (2) is 1 mm-1.5 mm.

4. The meniscus implant according to claim 1, characterized in that: The outer diameter of the reinforcement ring (3) is no greater than the inner diameter of the connection hole (2).

5. The meniscus implant according to claim 4, characterized in that: There are two reinforcement rings (3), which are respectively installed above and below the connection hole (2).

6. The meniscus implant according to claim 2, characterized in that: A plurality of the connection holes (2) are equidistantly spaced along the periphery (12) of the implant.

7. The meniscus implant according to claim 2, characterized in that: The number of the connection holes (2) is four, which are symmetrically distributed on the upper periphery of the implant and the lower periphery (122) of the implant.

8. The meniscus implant according to claim 1, characterized in that: The reinforcing ring (3) is made of a biocompatible material.

9. The meniscus implant according to claim 1, characterized in that: The inner wall of the reinforcement ring (3) is provided with an elastic buffer layer (31).

10. The meniscus implant according to claim 1, characterized in that: The implant (1) is made of a material having a tensile elastic modulus Eci of at least 10 MPa measured in the circumferential direction, a tensile elastic modulus Er of at least 1 MPa measured in the radial direction, and a compressive elastic modulus Eco of at least 0.1 MPa.

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