CN119632735A - A meniscus implant - Google Patents
A meniscus implant Download PDFInfo
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- CN119632735A CN119632735A CN202411592552.6A CN202411592552A CN119632735A CN 119632735 A CN119632735 A CN 119632735A CN 202411592552 A CN202411592552 A CN 202411592552A CN 119632735 A CN119632735 A CN 119632735A
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- meniscus
- periphery
- reinforcing ring
- connecting hole
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Abstract
The invention provides a meniscus implant, which relates to the technical field of medical equipment and comprises an implant, wherein the implant comprises an implant body and an implant periphery, a plurality of connecting holes, a reinforcing ring and a reinforcing ring, wherein the connecting holes penetrate through the implant periphery and are used for guiding suture lines to penetrate through, the reinforcing ring is arranged in the connecting holes, and the suture lines penetrate through the connecting holes to fixedly connect the implant with the edge of a primary meniscus. According to the meniscus implant provided by the invention, the connecting hole and the reinforcing ring embedded in the hole are formed in the implant, so that a stable anchor point is provided for the implant, the suture line can be tightly attached to the reinforcing ring when passing through the implant, and direct friction with the surface of the implant is avoided, so that the notch is reduced, and the service life of the implant is effectively prolonged.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a meniscus implant.
Background
The meniscus is responsible for shock absorption, load transfer, lubrication, and stability of the knee joint. Menisci are important to reduce the incidence of degenerative joint disease. Unfortunately, after trauma or severe injury, the meniscus may be damaged, for example, by the formation of, for example, a crack in the meniscus. Injury to the meniscus is associated with changes in joint function, which can lead to disability and degenerative joint changes. One of the strategies for meniscus repair is to suggest the use of biocompatible synthetic or natural scaffolds as a matrix to promote defect remodeling and healing. If there are too many cracks, the meniscus may have to be trimmed so that only the outer edge of the meniscus may be left. A meniscal implant made of synthetic or natural material may be anchored to the rim, for example via surgical sutures.
In the prior art, the use of sutures to penetrate the implant during the suturing of the meniscus implant to the native meniscus may create deeper cuts or indentations in the material, which may compromise the structural integrity of the implant, reduce its ability to withstand the daily loads of the knee joint, delay the healing process, increase the risk of postoperative complications, and ultimately affect the long-term stability and function of the knee joint.
Disclosure of Invention
In order to solve the problem of deep notch caused by suturing a meniscus implant and a primary meniscus in the prior art, the invention provides the meniscus implant, wherein a connecting hole is formed in the meniscus implant, and a reinforcing ring is arranged in the connecting hole, so that the anchoring stability of the implant is enhanced, direct friction between a suture line and the implant is avoided, and the problem of deep notch caused by suturing the meniscus implant and the primary meniscus in the prior art is solved.
The technical scheme adopted for solving the technical problems is as follows:
a meniscus implant comprising:
the implant comprises an implant body and an implant periphery;
the connecting holes penetrate through the periphery of the implant and are used for guiding the suture to pass through;
the reinforcing ring is arranged in the connecting hole;
The suture passes through the connecting hole to realize the fixed connection between the implant and the edge of the primary meniscus.
Optionally, the implant periphery is of a C-shaped configuration, and the implant periphery comprises an implant upper periphery, an implant lower periphery, and an implant outer periphery.
Optionally, the diameter of the connecting hole is 1mm-1.5mm.
Optionally, the outer diameter of the reinforcing ring is not greater than the inner diameter of the connecting hole.
Optionally, the number of the reinforcing rings is two, and the reinforcing rings are respectively arranged above and below the connecting hole.
Optionally, a plurality of the attachment holes are equally spaced along the implant periphery.
Optionally, the number of the connecting holes is four, and the connecting holes are symmetrically distributed on the upper periphery of the implant and the lower periphery of the implant.
Optionally, the reinforcement ring is made of a biocompatible material.
Optionally, an elastic buffer layer is arranged on the inner wall of the reinforcing ring.
Alternatively, the implant is made of a material having a tensile elastic modulus ec of at least 10MPa measured in the circumferential direction, a tensile elastic modulus Er of at least 1MPa measured in the radial direction, and a compressive elastic modulus Eco of at least 0.1 MPa.
The beneficial effects of the invention are as follows:
The meniscus implant provided by the invention realizes breakthrough improvement of the traditional meniscus repair technology by arranging the connecting holes and the reinforcing rings embedded in the holes on the implant, the connecting holes not only provide stable anchor points for the implant, but also ensure that the suture thread can be tightly attached to the reinforcing rings when passing through the reinforcing rings, thereby reducing the incision and effectively prolonging the service life of the implant, and in addition, the design also reduces the risk of the patient needing to perform operation again due to the damage of the implant.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is a schematic illustration of the structure of a meniscal implant of the present invention;
FIG. 2 is a schematic illustration of the assembly of a meniscal implant with a native meniscal edge in accordance with the present invention;
FIG. 3 is a schematic diagram showing the assembly of a meniscal implant with a primary meniscal edge in accordance with the present invention;
FIG. 4 is a top view of a meniscal implant of the present invention with an indication of the direction of measurement of the tensile elastic modulus;
Fig. 5 is a cross-sectional view taken along A-A in fig. 4 with an indication of the measurement direction of the modulus of elasticity under compression.
In the figures, 1-implant, 11-implant body, 12-implant periphery, 121-implant upper periphery, 122-implant lower periphery, 123-implant outer periphery, 2-attachment holes, 3-reinforcement ring, 31-elastic buffer layer, 4-suture.
Detailed Description
The present invention will now be described in further detail. The embodiments described below are exemplary and intended to illustrate the invention and should not be construed as limiting the invention, as all other embodiments, based on which a person of ordinary skill in the art would obtain without inventive faculty, are within the scope of the invention.
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
To solve the problem of deep cuts caused by prior art meniscal implants being sutured with native menisci, the present invention provides a meniscal implant, as shown in FIGS. 1-3, comprising an implant 1, wherein the implant 1 comprises an implant body 11 and an implant periphery 12;
A plurality of attachment holes 2, the attachment holes 2 extending through the implant periphery 12 for guiding the suture 4 therethrough;
the reinforcing ring 3 is arranged inside the connecting hole 2;
suture 4 passes through attachment hole 2, effecting a secure attachment of implant 1 to native meniscus edge 5.
The meniscus implant provided by the invention realizes breakthrough improvement of the traditional meniscus repair technology by arranging the connecting holes 2 and the reinforcing rings 3 embedded in the holes on the implant 1, the connecting holes 2 not only provide stable anchor points for the implant 1, but also ensure that the suture 4 can be tightly attached to the reinforcing rings 3 when passing through the reinforcing rings 3, thereby reducing the incision and effectively prolonging the service life of the implant, and in addition, the design also reduces the risk of the patient needing to perform a re-operation due to the damage of the implant.
In order to enhance the stability and conformability of the implant 1 within the meniscus, the present invention preferably has an implant perimeter 12 in a C-shaped configuration that matches the natural contour of the native meniscus, and preferably the implant perimeter 12 includes an implant upper perimeter 121, an implant lower perimeter 122, and an implant outer perimeter 123.
The preferred diameter of the attachment hole 2 of the present invention is 1mm to 1.5mm, which is a size range that allows the suture 4 to pass smoothly while maintaining sufficient peripheral strength to avoid compromising the structural integrity of the implant 1 due to the oversized holes.
In order to ensure that the reinforcing ring 3 can be matched with the connecting hole 2, the outer diameter of the reinforcing ring 3 is preferably not larger than the inner diameter of the connecting hole 2, and further, the number of the reinforcing rings 3 is preferably two, and the reinforcing rings are respectively arranged above and below the connecting hole 2, so that extra supporting points are provided for the suture 4, direct contact between the suture 4 and the implant 1 is effectively avoided, thus reducing the impression caused by the suture 4 on the implant 1, meanwhile, the reinforcing ring 3 is not arranged in the middle part of the connecting hole 2, a space is reserved, and the elasticity of the implant 1 in the middle part of the connecting hole 2 can be maintained, so that the flexibility and the adaptability of the implant 1 are maintained, and different physiological conditions and movement requirements can be better adapted.
The present invention preferably provides for a plurality of attachment holes 2 to be equally spaced along the implant periphery 12.
After a plurality of connecting holes 2 are distributed equidistantly along the periphery 12 of the implant, starting from the connecting hole 2 at the most edge of the upper periphery 121 or the lower periphery 122 of the implant, a suture 4 is led to sequentially penetrate through each connecting hole and the primary meniscus edge 5, so that the implant 1 and the primary meniscus edge 5 are uniformly fixed, and finally, the suture is knotted and fixed at the primary meniscus edge 5, so that the whole implantation process is completed.
The design can provide evenly distributed anchor points, is beneficial to realizing the balanced fixation of the implant 1 and the primary meniscus edge 5, avoids local stress concentration, thereby reducing the damage risk of the implant 1 or surrounding tissues caused by uneven stress, and is convenient for the arrangement and adjustment of the suture 4 in operation, and improves the convenience of operation and the reliability of the repair effect.
Further, the number of attachment holes 2 is preferably four in the present invention, symmetrically distributed on the implant upper periphery and the implant lower periphery 122.
After the four connecting holes 2 are symmetrically distributed on the implant upper periphery 121 and the implant lower periphery 122, firstly starting from two connecting holes 2 at one end, after the suture 4 passes through the two holes and is connected with the primary meniscus edge 5, knotting is carried out for the first time to ensure preliminary fixation, then, after the suture 4 passes through the corresponding two connecting holes 2 at the other end, the penetrating and connecting processes are repeated, and after the completion, knotting fixation is carried out for the second time.
The arrangement of the attachment holes 2 allows for an effective fixation of the implant 1 to the primary meniscus edge 5 with a minimum number of attachment points, which reduces the surgical complexity and potential surgical trauma, maintains the structural integrity and mechanical properties of the implant 1 and reduces the invasiveness of the primary meniscus edge 5 by reducing the number of attachment holes 2, and in addition, the four symmetrically distributed attachment holes 2 also allow for a uniform force distribution, thereby improving the stability and durability of the implant 1 and reducing the risk of postoperative complications.
The reinforcement ring 3 is preferably made of a biocompatible material which is more friendly to the patient's immune system and which significantly reduces the immune response elicited by the implant 1 and thus the risk of post-operative inflammation and rejection.
Furthermore, the inner wall of the reinforcement ring 3 is preferably provided with the elastic buffer layer 31, so that a soft contact surface is provided for the suture thread 4, friction between the suture thread 4 and the reinforcement ring 3 is remarkably reduced, the structural integrity of the suture thread 4 is protected, the fixed state of the implant 1 can be more stably maintained, and the reliability of the whole implantation system and the success rate of operations are improved.
As shown in Figs. 4-5, the preferred implant 1 of the present invention may be made of a synthetic material, such as polyurethane, having a tensile elastic modulus Eci of at least 10MPa measured circumferentially, a tensile elastic modulus Er of at least 1MPa measured radially, and a compressive elastic modulus Eco of at least 0.1MPa, which ensure proper flexibility and strength of the implant 1 when subjected to physiological loading, while withstanding the stresses generated by knee joint movement, while maintaining long-term stability and durability.
With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411592552.6A CN119632735A (en) | 2024-11-08 | 2024-11-08 | A meniscus implant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411592552.6A CN119632735A (en) | 2024-11-08 | 2024-11-08 | A meniscus implant |
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| Publication Number | Publication Date |
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| CN119632735A true CN119632735A (en) | 2025-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202411592552.6A Pending CN119632735A (en) | 2024-11-08 | 2024-11-08 | A meniscus implant |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101150999A (en) * | 2005-03-01 | 2008-03-26 | 伊西康有限公司 | surgical implant |
| US20090149939A1 (en) * | 2007-12-06 | 2009-06-11 | Cook Incorporated | Stent-graft comprising at least one reinforced hole |
| US20100316830A1 (en) * | 2009-06-10 | 2010-12-16 | William A. Cook Australia Pty. Ltd. | Reinforcing ring |
| CN101961256A (en) * | 2009-07-24 | 2011-02-02 | 德普伊米特克公司 | Devices and methods for repairing tissue |
| CN103415270A (en) * | 2011-03-08 | 2013-11-27 | 新特斯有限责任公司 | Method and implant for replacing damaged meniscal tissue |
| CN215130925U (en) * | 2020-12-02 | 2021-12-14 | 紫水晶(山西)再生医学科技有限公司 | Knee meniscus made of bioactive glass material |
-
2024
- 2024-11-08 CN CN202411592552.6A patent/CN119632735A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101150999A (en) * | 2005-03-01 | 2008-03-26 | 伊西康有限公司 | surgical implant |
| US20090149939A1 (en) * | 2007-12-06 | 2009-06-11 | Cook Incorporated | Stent-graft comprising at least one reinforced hole |
| US20100316830A1 (en) * | 2009-06-10 | 2010-12-16 | William A. Cook Australia Pty. Ltd. | Reinforcing ring |
| CN101961256A (en) * | 2009-07-24 | 2011-02-02 | 德普伊米特克公司 | Devices and methods for repairing tissue |
| CN103415270A (en) * | 2011-03-08 | 2013-11-27 | 新特斯有限责任公司 | Method and implant for replacing damaged meniscal tissue |
| CN215130925U (en) * | 2020-12-02 | 2021-12-14 | 紫水晶(山西)再生医学科技有限公司 | Knee meniscus made of bioactive glass material |
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