CN212382789U - Artificial ligament graft - Google Patents
Artificial ligament graft Download PDFInfo
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- CN212382789U CN212382789U CN202021595154.7U CN202021595154U CN212382789U CN 212382789 U CN212382789 U CN 212382789U CN 202021595154 U CN202021595154 U CN 202021595154U CN 212382789 U CN212382789 U CN 212382789U
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Abstract
The utility model provides an artificial ligament graft, including ligament net, flexible regulation fixing device, the tip of ligament net is connected the back with flexible regulation fixing device and is rolled up and form the cylinder ligament, and flexible regulation fixing device is located the tip of cylinder ligament, flexible regulation fixing device includes suture, suture board, and ligament net and suture board are connected to the suture. The utility model discloses a suture and suture board constitute flexible regulation fixing device, can adjust the length and the elasticity degree of artifical ligament graft on the one hand, and the other party can directly suspend in midair fixedly through the suture board, need not additionally to extrude fixedly through the screw.
Description
Technical Field
The utility model relates to the technical field of medical equipment, specifically, relate to an artificial ligament graft.
Background
ACL (anterior cruciate ligament) reconstruction grafts can be classified by source into autologous ligament grafts, allogenic ligament grafts, and artificial ligament grafts. However, both autologous tissue and allogeneic tissue have a remodeling process after the operation, so that the patient cannot take part in strenuous activities for a long time after the operation. The artificial ligament graft is an artificial graft developed to avoid the above disadvantages of the autologous and allogeneic grafts, and can effectively avoid the problem of insufficient strength of the autologous or allogeneic ligament, and more importantly, based on the high strength of the physical properties of the artificial ligament graft, the artificial ligament graft can quickly restore the normal activities of the patient for normal exercise and life. At present, the artificial ligament graft is often provided with an interface screw, a suture and a suture plate (buckle) in the operation in addition to an artificial ligament to complete the whole operation. However, the use of these devices is limited to the length of the devices, and the like, and a doctor needs to make good preparation before operation to ensure the implantation of the artificial ligament.
Patent document CN110141398A discloses a method for preparing an artificial ligament, which is to twist a thread-like artificial material into a rope-like object by a twist braid and twist the rope-like object to form an artificial ligament. The twist plait is formed by twisting 15-25 filiform artificial materials into one strand by using 1 strand and 3-4 strands; the rope-shaped object is formed by twisting 15-25 filiform artificial materials into 1 bundle, wherein 3 bundles are twisted into one strand, and 3 strands are twisted into 1 rope. The artificial ligament obtained by the artificial ligament weaving method disclosed by the patent document has good mechanical property, the mechanical property of the artificial ligament is closer to the autologous ACL, and the stretching length of each ligament is better than the autologous ACL; the artificial ligament braided structure can ensure that the ligament can respectively meet the requirements of maintaining the front and back and complex rotation stabilizing effects of the knee joint. However, the mechanical properties of the entire ligament at each position in the patent document are the same, and it is not considered that the movement range of the ligament in the joint cavity is larger, and the ligament needs to be relatively sparse to facilitate the movement of the joint. In addition, the adjustment of the ligament implantation length in the operation cannot be realized, and the fixation also needs additional fixing parts.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide an artificial ligament graft.
According to the utility model provides a pair of artificial ligament graft, including ligament net, flexible regulation fixing device, the tip of ligament net is connected the back with flexible regulation fixing device and is rolled up and form the cylinder ligament, and flexible regulation fixing device is located the tip of cylinder ligament, flexible regulation fixing device includes suture, suture board, and ligament net and suture board are connected to the suture.
Preferably, the suture plate comprises two suture holes, namely a first suture hole and a second suture hole; both ends of the ligament net are connected with telescopic adjusting and fixing devices.
Preferably, after one end of the suture passes through the first suture hole from one side of the suture plate, the suture penetrates into the pore of the ligament net from one side of the ligament net, and passes back to one side of the ligament net from the pore of the ligament net from the other side of the ligament net, a first coil is formed on the other side of the ligament net, and the passed-back suture passes into the suture hole on the suture plate from the other side of the suture plate and passes out from one side of the suture plate;
the other end of the suture penetrates through the second suture hole from one side of the suture plate and penetrates into the hole of the ligament net from one side of the ligament net, and penetrates back to one side of the ligament net from the other side of the ligament net through the hole of the ligament net from the other side of the ligament net after penetrating into the first coil from the other side of the ligament net, a second coil is formed on the other side of the ligament net, the first coil and the second coil are interlocked, and the penetrating suture penetrates into the suture hole in the suture plate from the other side of the suture plate and penetrates out from one side of the suture plate.
Preferably, one end of the suture is threaded into the same aperture or a different aperture than the aperture through which the ligament mesh is threaded back;
the other end of the suture is threaded into the same aperture or a different aperture as the aperture through which the ligament mesh is threaded back.
Preferably, after one end of the suture passes through the first suture hole from one side of the suture plate, the suture penetrates into the pore of the ligament mesh from one side of the ligament mesh and returns to one side of the ligament mesh from the pore of the ligament mesh from the other side of the ligament mesh, the suture penetrates into the pore different from the pore of the ligament mesh, and the returned suture penetrates into the suture hole on the suture plate from the other side of the suture plate and passes out from one side of the suture plate;
the other end of the suture penetrates through the second suture hole from one side of the suture plate and penetrates into the hole of the ligament net from one side of the ligament net, and penetrates back to one side of the ligament net from the other side of the ligament net through the hole of the ligament net, the suture penetrates into the hole different from the hole penetrating back to the ligament net, and the penetrated suture penetrates into the suture hole in the suture plate from the other side of the suture plate and penetrates out from one side of the suture plate.
Preferably, both ends of the ligament net are woven nets which are transversely and longitudinally staggered, the middle of the ligament net is provided with longitudinal free wires, and the length direction of the longitudinal free wires is along the axial direction of the cylindrical ligament.
Preferably, the ligament net is woven by polyethylene terephthalate material.
Preferably, the suture is made of an ultra-high molecular weight polyethylene material.
Preferably, the suture plate is a titanium plate.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model has the advantages of simple and reasonable structure, can adjust length and elasticity degree after the artificial ligament graft is implanted through flexible regulation fixing device in the operation, need not the accurate length that the doctor calculated the implantation before the operation, avoided the doctor to predict the inaccurate problem that needs implant once more of implantation length simultaneously.
2. The utility model discloses a suture and suture board constitute flexible regulation fixing device, can adjust the length and the elasticity degree of artifical ligament graft on the one hand, and the other party can directly suspend in midair fixedly through the suture board, need not additionally to extrude fixedly through the screw.
3. The utility model discloses vertical free silk is adopted at ligament net middle part, and the joint chamber is implanted at the middle part of the cylinder ligament that forms after the ligament net is rolled up, and the sparse ligament in both ends is favorable to articular motion at middle part.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic view of the artificial ligament implant of the present invention after being implanted into a joint.
Fig. 2 is a schematic view of the connection between the suture and the ligament mesh of the present invention.
Fig. 3 is a process diagram of the suture of the present invention penetrating into the ligament mesh and the suture plate, wherein the ligament mesh is not shown.
Fig. 4 shows an embodiment of the implanting method of the present invention.
The figures show that:
1-suture, 2-suture plate, 3-ligament net.
Detailed Description
The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.
According to the utility model provides a pair of artificial ligament graft, as shown in fig. 1-3, including ligament net, flexible regulation fixing device, the tip of ligament net is connected with flexible regulation fixing device and is rolled up and form the cylinder ligament, and flexible regulation fixing device is located the tip of cylinder ligament, flexible regulation fixing device includes suture, suture board, and ligament net and suture board are connected to the suture. The suture plate comprises two suture holes, namely a first suture hole and a second suture hole; both ends of the ligament net are connected with telescopic adjusting and fixing devices.
In one embodiment, as shown in fig. 2-3, after one end of the suture passes through the first suture hole from one side of the suture plate, the suture is passed through the aperture of the ligament mesh from one side of the ligament mesh and is passed back through the aperture of the ligament mesh from the other side of the ligament mesh, a first loop is formed at the other side of the ligament mesh, and the passed-back suture passes through the suture hole (the first suture hole or the second suture hole) on the suture plate from the other side of the suture plate and passes out from one side of the suture plate; the other end of the suture penetrates through the second suture hole from one side of the suture plate and penetrates into the hole of the ligament net from one side of the ligament net, and penetrates back to one side of the ligament net from the other side of the ligament net after penetrating into the first coil from the other side of the ligament net, a second coil is formed on the other side of the ligament net, the first coil and the second coil are interlocked, and the penetrating suture penetrates into the suture hole (the first suture hole or the second suture hole) in the suture plate from the other side of the suture plate and penetrates out from one side of the suture plate. One end of the suture is penetrated into the same pore or different pores as the pore for penetrating back the ligament mesh; the other end of the suture is threaded into the same aperture or a different aperture as the aperture through which the ligament mesh is threaded back. The first coil and the second coil are coils with adjustable sizes, the two coils with adjustable lengths are directly fixed in the artificial ligament mesh, and the coils can be shrunk by drawing the thread ends at two ends of the suture on the suture plate, so that the length and tightness of implantation can be adjusted.
In another embodiment, after one end of the suture passes through the first suture hole from one side of the suture plate, the suture passes through the aperture of the ligament mesh from one side of the ligament mesh and passes back through the aperture of the ligament mesh from the other side of the ligament mesh, the suture passes through a different aperture than the aperture of the ligament mesh, and the passed-back suture passes through the suture hole (the first suture hole or the second suture hole) on the suture plate from the other side of the suture plate and passes out from one side of the suture plate; the other end of the suture penetrates through the second suture hole from one side of the suture plate, penetrates into the pore of the ligament net from one side of the ligament net, and penetrates back to one side of the ligament net from the other side of the ligament net through the pore of the ligament net, the penetrating and returning of the suture are different in pore, and the penetrating suture penetrates into the suture hole (the first suture hole or the second suture hole) in the suture plate from the other side of the suture plate and penetrates out from one side of the suture plate. The first coil and the second coil are coils with adjustable sizes, the two coils with adjustable lengths are directly fixed in the artificial ligament mesh, and the coils can be shrunk by drawing the thread ends at two ends of the suture on the suture plate, so that the length and tightness of implantation can be adjusted.
The two ends of the ligament net are woven nets which are transversely and longitudinally staggered, longitudinal free wires are arranged in the middle of the ligament net, the length direction of the longitudinal free wires is along the axial direction of the cylindrical ligament, and the longitudinal free wires which are sparse in the middle are beneficial to the movement of legs. The ligament net is woven by polyethylene terephthalate materials. The suture is made of ultra-high molecular weight polyethylene material. The suture plate is a titanium plate.
The utility model discloses an artificial ligament graft is fit for anterior cruciate ligament and rebuilds the art formula in full and transplants (femur end and shin end all adopt to suspend in midair fixedly), the utility model discloses fixing device and artificial ligament integration to can adjust length adaptation fixed position, just can implant after drilling when the operation, can shorten the operation time greatly, reduce doctor's operation. The suture plates are suspended and fixed at two ends of the joint bones, the traditional artificial ligament extrusion screw fixing mode is replaced, and the phenomena of screw loosening and ligament loosening are improved.
The method for implanting the utility model comprises the following steps:
the method comprises the following steps: respectively drilling bone tunnel holes in two bones corresponding to the joint cavity, wherein the radial size of each bone tunnel hole is larger than the width of the suture plate and smaller than the length of the suture plate, and the suture plate can pass through the bone tunnel holes;
step two: threading a traction line on a suture plate at the end part of the artificial ligament graft, wherein the traction line penetrates through a first suture hole from one side of the suture plate and penetrates out of a second suture hole from the other side of the suture plate;
step three: transplanting two ends of the artificial ligament graft into bone passage holes of the two bones respectively through a traction wire, enabling the longitudinal free silk in the middle of the cylindrical ligament to be positioned in the joint cavity and the suture plate to be positioned outside one end of the bone passage holes of the two bones far away from the joint cavity, and fixing the position of the artificial ligament graft through clamping the suture plate outside the bone passage holes of the two bones;
step four: the length and the tightness degree of the implantation of the artificial ligament graft are adjusted by retracting and releasing the suture lines on the suture plates at the two ends of the artificial ligament graft;
step five: after the length and the tightness degree of the implanted artificial ligament are adjusted, the two ends of the suture on the external suture plates of the two bone passage holes are tied and fixed respectively, redundant suture is cut off, the traction wire is pulled out, and the implantation is completed.
In one embodiment, as shown in fig. 4, the artificial ligament graft is transplanted to the knee joint, and a lateral small hole, a medial large bone tunnel hole and two corresponding bones (femur and tibia) of the knee joint are established at the knee through a positioner and by using an inverted drill; establishing a new channel at the knee, and then respectively drawing the two ends of the artificial ligament graft into the bone tunnel holes of the two bones from the middle of the knee through a traction line; after the artificial ligament graft is drawn into the position of the bone passage, the artificial ligament graft is clamped outside the bone passage hole through the suture plate to fix the position of the artificial ligament graft, and the implantation length and the tightness degree of the artificial ligament graft are adjusted by pulling the thread head at the end part of the suture on the suture plate; and then knotting and fixing the thread heads of the two threads on the suture plate, cutting off redundant sutures, and drawing out the traction threads to finish the operation.
In another embodiment, a traction thread is threaded on the suture plate at one end of the artificial ligament graft, the traction thread is threaded through the first suture hole from one side of the suture plate and threaded out of the second suture hole from the other side of the suture plate; one end of the artificial ligament graft penetrates through a bone passage hole in one bone and penetrates out of a bone passage hole in the other bone through a traction wire, the longitudinal free silk in the middle of the cylindrical ligament is located in a joint cavity, and suture boards at two ends of the artificial ligament graft are clamped outside one end of the bone passage hole, far away from the joint cavity, of the two bones.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (9)
1. The utility model provides an artificial ligament graft which characterized in that, includes ligament net, flexible regulation fixing device, roll up after the tip of ligament net is connected with flexible regulation fixing device and form the cylinder ligament, flexible regulation fixing device is located the tip of cylinder ligament, flexible regulation fixing device includes suture, suture board, and ligament net and suture board are connected to the suture.
2. The prosthetic ligament graft of claim 1, wherein the suture plate comprises two suture holes, a first suture hole and a second suture hole; both ends of the ligament net are connected with telescopic adjusting and fixing devices.
3. The artificial ligament graft of claim 2, wherein one end of the suture is passed through the first suture hole from one side of the suture plate, passed through the aperture of the ligament mesh from one side of the ligament mesh, and passed back through the aperture of the ligament mesh from the other side of the ligament mesh to one side of the ligament mesh, forming a first loop at the other side of the ligament mesh, the passed back suture being passed through the suture hole in the suture plate from the other side of the suture plate and passed out from one side of the suture plate;
the other end of the suture penetrates through the second suture hole from one side of the suture plate and penetrates into the hole of the ligament net from one side of the ligament net, and penetrates back to one side of the ligament net from the other side of the ligament net through the hole of the ligament net from the other side of the ligament net after penetrating into the first coil from the other side of the ligament net, a second coil is formed on the other side of the ligament net, the first coil and the second coil are interlocked, and the penetrating suture penetrates into the suture hole in the suture plate from the other side of the suture plate and penetrates out from one side of the suture plate.
4. The artificial ligament graft of claim 3, wherein one end of the suture is threaded into the same aperture or a different aperture as the aperture through which the ligament mesh is threaded back;
the other end of the suture is threaded into the same aperture or a different aperture as the aperture through which the ligament mesh is threaded back.
5. The artificial ligament graft of claim 2, wherein one end of the suture passes through the first suture hole from one side of the suture plate, passes through the aperture of the ligament mesh from one side of the ligament mesh, and passes back through the aperture of the ligament mesh from the other side of the ligament mesh, the suture passing through the aperture of the ligament mesh being different from the aperture passing back through the ligament mesh, the passed back suture passing through the suture hole in the suture plate from the other side of the suture plate and passing out from one side of the suture plate;
the other end of the suture penetrates through the second suture hole from one side of the suture plate and penetrates into the hole of the ligament net from one side of the ligament net, and penetrates back to one side of the ligament net from the other side of the ligament net through the hole of the ligament net, the suture penetrates into the hole different from the hole penetrating back to the ligament net, and the penetrated suture penetrates into the suture hole in the suture plate from the other side of the suture plate and penetrates out from one side of the suture plate.
6. The artificial ligament graft according to claim 1, wherein the ligament net is provided with woven nets at two ends and is transversely and longitudinally staggered, the ligament net is provided with longitudinal free wires in the middle, and the length direction of the longitudinal free wires is along the axial direction of the cylindrical ligament.
7. The artificial ligament graft of claim 1, wherein the ligament mesh is woven from a polyethylene terephthalate material.
8. The artificial ligament graft of claim 1, wherein the suture is made of an ultra-high molecular weight polyethylene material.
9. The artificial ligament graft of claim 1, wherein the suture plate is a titanium plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021595154.7U CN212382789U (en) | 2020-08-04 | 2020-08-04 | Artificial ligament graft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021595154.7U CN212382789U (en) | 2020-08-04 | 2020-08-04 | Artificial ligament graft |
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| Publication Number | Publication Date |
|---|---|
| CN212382789U true CN212382789U (en) | 2021-01-22 |
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| CN202021595154.7U Active CN212382789U (en) | 2020-08-04 | 2020-08-04 | Artificial ligament graft |
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| CN (1) | CN212382789U (en) |
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- 2020-08-04 CN CN202021595154.7U patent/CN212382789U/en active Active
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Address after: Room 301, building 1, 508 Tianchen Road, Qingpu District, Shanghai, 201712 Patentee after: Shanghai Ligetai Biotechnology Co.,Ltd. Address before: Room 301, building 1, 508 Tianchen Road, Qingpu District, Shanghai, 201712 Patentee before: SHANGHAI LIGETAI BIOLOGICAL TECHNOLOGY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |