CN117100340A - Implant suitable for use in prosthetic devices - Google Patents
Implant suitable for use in prosthetic devices Download PDFInfo
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- CN117100340A CN117100340A CN202311309650.XA CN202311309650A CN117100340A CN 117100340 A CN117100340 A CN 117100340A CN 202311309650 A CN202311309650 A CN 202311309650A CN 117100340 A CN117100340 A CN 117100340A
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- implant
- mesh
- suture
- outer sleeve
- mesh structure
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- 239000007943 implant Substances 0.000 title claims abstract description 84
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 claims description 7
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 claims description 7
- 238000009954 braiding Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 239000003356 suture material Substances 0.000 claims 1
- 210000001264 anterior cruciate ligament Anatomy 0.000 abstract description 58
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 4
- 230000008439 repair process Effects 0.000 description 13
- 230000007246 mechanism Effects 0.000 description 7
- 210000001519 tissue Anatomy 0.000 description 7
- 210000003041 ligament Anatomy 0.000 description 6
- 238000001356 surgical procedure Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000004804 winding Methods 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 206010003246 arthritis Diseases 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 210000000629 knee joint Anatomy 0.000 description 2
- 238000009940 knitting Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 208000034693 Laceration Diseases 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 210000000426 patellar ligament Anatomy 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- JTIGKVIOEQASGT-UHFFFAOYSA-N proquazone Chemical compound N=1C(=O)N(C(C)C)C2=CC(C)=CC=C2C=1C1=CC=CC=C1 JTIGKVIOEQASGT-UHFFFAOYSA-N 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 210000002435 tendon Anatomy 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/064—Surgical staples, i.e. penetrating the tissue
- A61B17/0642—Surgical staples, i.e. penetrating the tissue for bones, e.g. for osteosynthesis or connecting tendon to bone
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
- A61B17/0401—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
- A61B17/0482—Needle or suture guides
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
- A61B17/0491—Sewing machines for surgery
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/064—Surgical staples, i.e. penetrating the tissue
- A61B17/0644—Surgical staples, i.e. penetrating the tissue penetrating the tissue, deformable to closed position
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
- A61B17/0401—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
- A61B2017/0409—Instruments for applying suture anchors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
- A61B17/0401—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
- A61B2017/0446—Means for attaching and blocking the suture in the suture anchor
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Rheumatology (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Prostheses (AREA)
Abstract
The invention provides an implant suitable for a repairing device, which comprises a net sleeve structure and a suture, wherein the net sleeve structure is used for being sleeved on the front end of an outer sleeve of the repairing device and clamped by the outer tube wall at the front end of the outer sleeve, the suture is wound on the side wall of the net sleeve structure along the circumferential direction of the net sleeve structure, and two ends of the suture penetrate out from the side surface of the net sleeve structure; when the net sleeve structure is pushed out by the repairing device to be sleeved on the target object, the net sleeve structure is fixed on the target object by tightening the suture. In the process of repairing the anterior cruciate ligament by conveying the implant, the implant suitable for the repairing device is directly sleeved at the broken end of the anterior cruciate ligament, and the broken end of the anterior cruciate ligament can be effectively fixed without repeated threading on the anterior cruciate ligament, and the anterior cruciate ligament is prevented from being cut in the repairing process.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an implant suitable for a repairing device.
Background
In the case of a tear in the anterior cruciate ligament, the traditional treatment is anterior cruciate ligament reconstruction. The reconstruction is performed by removing the old anterior cruciate ligament and reconstructing the anterior cruciate ligament using tissue from other parts of the body. The most common sites for harvesting tissue grafts are the patellar tendon in the anterior part of the knee joint or the popliteal tendon in the posterior part of the thigh. After the tissue is obtained, it is inserted into position with the normal anterior cruciate ligament and secured in place with various types of fixation devices.
Anterior cruciate ligament reconstruction surgery mainly faces the following two problems: one is from which tissue is obtained for reconstructing the ligament. The tissues must come from some place in the body and removal from these other locations presents problems including pain, weakness and mechanical changes in the joints; some people may choose to have a foreign body tissue, but these grafts are weaker than normal anterior cruciate ligaments and have a higher failure rate, especially in young athletes. In most cases, allografts are used by individuals who are no longer engaged in competitive exercises. Secondly, the probability of arthritis in the knee joint increases in the person undergoing anterior cruciate ligament reconstruction surgery. This condition typically occurs decades after reconstruction of the anterior cruciate ligament. Studies have shown that one of the causes of arthritis following reconstruction of the anterior cruciate ligament is due to the altered motor mechanisms of the original joint by using a non-native implant (either from elsewhere in the body or allograft) instead of the anterior cruciate ligament.
Therefore, more students began to study anterior cruciate ligament repair techniques. The potential advantages of anterior cruciate ligament repair surgery are three: firstly, pain is reduced because there is no need to obtain transplanted tissue; secondly, without a large incision, the operation is completely arthroscopy; third, the native ACL organization is preserved.
The surgical approach to anterior cruciate ligament repair is to suture the fractured autologous anterior cruciate ligament, as provided by the ARTHREX mesh, a solution to anterior cruciate ligament repair. At present, in order to strengthen the suture strength, the threading action on the ligament is required to be repeatedly performed in the suture process. This action is prone to two problems: firstly, the operation is complicated, and the threading action is not easy to control due to the narrow space; secondly, the ligament is easy to cut in the suture process, and cleavage is caused.
To avoid threading, repair of the anterior cruciate ligament can be accomplished by delivering an implant during repair surgery, but how to effectively fix the ligament and prevent laceration of the ligament during surgery is a need to address the issue.
Accordingly, there is a need to provide a new type of implant suitable for use in prosthetic devices to address the above-described problems of the prior art.
Disclosure of Invention
The object of the present invention is to solve at least one of the above-mentioned drawbacks of the prior art and to provide an implant suitable for use in a prosthetic device.
In order to achieve the above object, the implant for a prosthetic device according to the present invention comprises a mesh structure and a suture, wherein the mesh structure is used for being sleeved on the front end of an outer sleeve of the prosthetic device and being clamped by the outer tube wall at the front end of the outer sleeve, the suture is wound on the side wall of the mesh structure along the circumferential direction of the mesh structure, and two ends of the suture penetrate out from the side surface of the mesh structure; when the net sleeve structure is pushed out by the repairing device to be sleeved on a target object, the suture is tightened, so that the net sleeve structure is fixed on the target object.
The implant suitable for the repairing device has the beneficial effects that:
in the repair of the anterior cruciate ligament completed by delivering the implant, the implant suitable for the repair device is directly sleeved at the broken end of the anterior cruciate ligament, and the broken end of the anterior cruciate ligament can be effectively fixed without repeated threading on the anterior cruciate ligament, and the anterior cruciate ligament is prevented from being cut in the repair process.
Further, the net cover structure is formed by knitting a knitting yarn.
Further, hollow grid structures are distributed on the side wall of the net sleeve structure, a plurality of grids are arranged on the grid structure, and the suture repeatedly passes through the grids to be movably connected to the net sleeve structure.
Further, when the number of the sutures is one, one end of each suture penetrates from the mesh of the mesh structure close to the front end of the target object, sequentially penetrates through the meshes from the front end of the mesh structure close to the target object to the middle of the mesh structure around the circumference of the mesh structure, and penetrates out from the meshes of the middle of the mesh structure, and is consistent with the direction of the other end of each suture.
Further, when the number of the sutures is plural, one end of each suture penetrates from the mesh of the mesh structure near the front end of the target object, and penetrates from the mesh of the mesh structure near the front end of the target object around the circumferential direction of the mesh structure, and the directions of the two ends of each suture are consistent with the directions of the other ends of the sutures, and the two ends of each suture are positioned on the same radial section of the mesh structure; the plurality of sutures are sequentially arranged on the front end of the net cover structure close to the target object.
Further, a plurality of the sutures are equidistantly distributed along the axial direction of the net cover structure.
Further, the net sleeve structure is cylindrical, and the cross section of the net sleeve structure along the radial direction of the net sleeve structure is circular.
Further, the shape of the grid is a circle or a polygon.
Further, the material of the net cover structure comprises ultra-high molecular weight polyethylene.
Further, the material of the suture comprises ultra-high molecular weight polyethylene.
Drawings
FIG. 1 is a schematic view of the overall structure of an implant according to an embodiment of the present invention;
FIG. 2 is an elevation view of another embodiment implant provided by the present invention;
FIG. 3 is a schematic view of the overall structure of a prosthetic device compatible with the implant of the present invention for use with the prosthetic device;
FIG. 4 is a schematic overall construction of a loading delivery assembly of a prosthetic device adapted for use with an implant of the prosthetic device of the present invention;
FIG. 5 is an enlarged view of FIG. 4 at A;
FIG. 6 is a schematic view of the overall structure of an outer sleeve of a prosthetic device adapted for use with an implant of the present invention for a prosthetic device;
FIG. 7 is a left side view of a loading delivery assembly of a prosthetic device compatible with the implant of the present invention for use with the prosthetic device;
FIG. 8 is a schematic view of the overall structure of an inner pushrod of a prosthetic device adapted for use with the implant of the prosthetic device of the present invention;
FIG. 9 is an exploded view of FIG. 5;
FIG. 10 is a schematic view of the overall structure of a drive assembly of a prosthetic device adapted for use with the implant of the prosthetic device of the present invention;
fig. 11 is a graph showing the change in the inner diameter of an implant according to an embodiment of the present invention when the implant is transferred from an outer sleeve of a prosthetic device adapted for use with the implant of the present invention to an inner pushrod.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. Unless otherwise defined, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. As used herein, the word "comprising" and the like means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof without precluding other elements or items.
Aiming at the problems existing in the prior art, the embodiment of the invention provides an implant suitable for a repairing device, which comprises a net sleeve structure and a suture, wherein the net sleeve structure is used for being sleeved on the front end of an outer sleeve of the repairing device and clamped by the outer tube wall at the front end of the outer sleeve, the suture is wound on the side wall of the net sleeve structure along the circumferential direction of the net sleeve structure, and two ends of the suture penetrate out from the side surface of the net sleeve structure; when the net sleeve structure is pushed out by the repairing device to be sleeved on a target object, the suture is tightened, so that the net sleeve structure is fixed on the target object.
The implant suitable for a prosthetic device of the invention has the advantages that:
in the repair of the anterior cruciate ligament completed by delivering the implant, the implant suitable for the repair device is directly sleeved at the broken end of the anterior cruciate ligament, and the broken end of the anterior cruciate ligament can be effectively fixed without repeated threading on the anterior cruciate ligament, and the anterior cruciate ligament is prevented from being cut in the repair process.
In some embodiments, the mesh structure is formed by braiding of braided wires.
In some embodiments, hollow grid structures are distributed on the side walls of the mesh sleeve structure, a plurality of grids are arranged on the grid structures, and the suture repeatedly passes through the grids to be movably connected to the mesh sleeve structure.
In some embodiments, when the number of the sutures is plural, one end of the suture penetrates from the mesh of the mesh structure near the front end of the target object, and penetrates from the mesh of the mesh structure near the front end of the target object around the circumferential direction of the mesh structure, and the two ends of the suture are located on the same radial section of the mesh structure in accordance with the orientation of the other end of the suture; the plurality of sutures are sequentially arranged on the front end of the net cover structure close to the target object.
FIG. 1 is a schematic view of the overall structure of an implant according to an embodiment of the present invention; fig. 3 is a schematic view of the overall structure of a prosthetic device adapted for use with the implant of the present invention for a prosthetic device. Referring to fig. 1 and 3, the implant 1 includes a mesh structure 11 and a plurality of sutures 12, but only two are shown in the figures. The net sleeve structure 11 is formed by braiding braided wires, and an inner hole of the net sleeve structure 11 is matched with the anterior cruciate ligament and used for penetrating the anterior cruciate ligament. The suture 12 is used to cinch the anterior cruciate ligament after it has been threaded into the mesh structure 11 to cinch the anterior cruciate ligament.
Fig. 6 is a schematic view of the overall structure of an outer sleeve of a prosthetic device adapted for use with an implant of the present invention for use with the prosthetic device. Referring to fig. 1, 2 and 5, the mesh structure 11 is sleeved on the outer sleeve 21 from the front end 211 of the outer sleeve and is clamped by a platform 2111 on the outer wall of the front end 211 of the outer sleeve, and the mesh structure 11 is a hollow structure formed by braiding braided wires. The side walls of the net cover structure 11 are all grid structures formed by braiding braided wires, a plurality of rows of grids are distributed in the radial direction of the net cover structure, and the grids are diamond-shaped. The multiple rows of grids penetrate from the front end 111 of the net cover structure along the direction B, the second rope end 122 of one suture 12 penetrates from the grid a of the first row of grids, penetrates from the grid c of the first row of grids along the circumferential winding of the net cover structure 11, penetrates from the grid d of the first row of grids, penetrates from the grid e of the first row of grids, and finally penetrates from the grid e of the first row of grids, and the tap directions of the first rope end 121 and the second rope end 122 of the suture 12 are consistent and parallel to each other. The second rope end 122 of the other suture 12 penetrates from the grid a ' of the other grid far from the first grid, penetrates from the grid b ' of the other grid in turn along the circumferential winding of the grid sleeve structure 11, penetrates from the grid c ' of the other grid, penetrates from the grid d ' of the other grid, and finally penetrates from the grid e ' of the other grid, and the tap directions of the first rope end 121 and the second rope end 122 of the other suture 12 are consistent and parallel to each other. The first rope ends 121 of the two sutures 12 lie in the same plane and the second rope ends 122 of the two sutures 12 lie in the same plane. Two sutures 12 are distributed in parallel to each other in the axial direction of the mantle structure 11 in the direction B at a position on the mantle structure 11 near the front end 111 of the mantle structure. When the net cover structure 11 is sleeved on the anterior cruciate ligament, the rope ends of the two sutures 12 are tensioned along the same direction, so that the net cover structure 11 binds and fixes the anterior cruciate ligament.
In some embodiments, a plurality of the sutures are equally spaced along the axial direction of the mesh structure.
In other embodiments, when the number of the sutures is one, one end of the suture penetrates from the mesh of the mesh structure near the front end of the target object, sequentially penetrates through the mesh from the mesh of the mesh structure near the front end of the target object to the middle part of the mesh structure around the circumference of the mesh structure, and penetrates out from the mesh of the middle part of the mesh structure, and is consistent with the orientation of the other end of the suture.
Fig. 2 is a front view of another embodiment implant provided by the present invention. Referring to fig. 2, the side walls of the mesh structure 11 are mesh structures formed by braiding braided wires, and the mesh structures are provided with a plurality of rows of meshes distributed along the radial direction of the mesh structure, and the meshes are diamond-shaped. The number of the stitches 12 of the first row of grids, the second row of grids and the third row of grids … … is one from the front end 111 of the net cover structure along the direction B, the second rope ends 122 of the stitches 12 sequentially penetrate from the grid h of the first row of grids of the front end 111 of the net cover structure, penetrate from the grid i of the first row of grids, penetrate from the grid j of the second row of grids, penetrate from the grid k of the second row of grids, finally penetrate from the grid l of the third row of grids, penetrate from the grid m of the third row of grids, and enable the stitches 12 to continuously penetrate from the grid of the net cover structure 11 along the circumferential winding of the net cover structure 11, so that the stitches 12 are wound for a certain length on the front end 111 of the net cover structure along the direction B. The tap directions of the first rope end 121 and the second rope end 122 of the suture 12 are consistent and parallel to each other. When the net cover structure 11 is sleeved on the anterior cruciate ligament, the two rope ends of the suture 12 are tensioned along the same direction, so that the net cover structure 11 binds and fixes the anterior cruciate ligament.
In some embodiments, the mesh structure is cylindrical and the cross section of the mesh structure along the radial direction is circular.
In some embodiments, the mesh is circular or polygonal in shape.
In some embodiments, the material of the mesh structure comprises ultra-high molecular weight polyethylene having a molecular weight greater than one hundred and one-half million.
In some embodiments, the material of the suture comprises ultra-high molecular weight polyethylene, the ultra-high molecular weight polyethylene having a molecular weight greater than one hundred and one hundred thousand.
In some embodiments, the suture is circular or oblate in cross-section.
In some more specific embodiments, when the suture has an oblong cross-section, the suture has a wire diameter width of 1.2mm to 1.8mm.
The prosthetic device compatible with the implant of the present invention suitable for use in a prosthetic device is as follows:
referring to fig. 3, the prosthetic device comprises a loading delivery assembly 2 and a driving assembly 3, the implant 1 is sleeved on the loading delivery assembly 2, and the loading delivery assembly 2 is firstly used for transporting the implant 1 to a position needing to be released by the driving assembly 3 and applying force to the loading delivery assembly 2 additionally, and the implant 1 is sleeved on the broken end of the anterior cruciate ligament. The force exerted by the drive assembly 3 on the loading delivery assembly 2 and the additional force exerted on the loading delivery assembly 2 are then removed, releasing the implant 1. Implant 1 is then tightened, strapping the anterior cruciate ligament. Finally, the loading conveyor assembly 2 is withdrawn to complete implantation of the implant 1.
FIG. 4 is a schematic overall construction of a loading delivery assembly of a prosthetic device adapted for use with an implant of the prosthetic device of the present invention; fig. 5 is an enlarged view at a in fig. 4.
Referring to fig. 3, 4 and 5, the loading delivery assembly 2 includes an outer sleeve 21, an inner push rod 22, a push rod return spring 23, a push rod locking button 24 and a locking button spring 25, the implant 1 is sleeved on the outer sleeve 21, a part of the inner push rod 22 is inserted inside the outer sleeve 21, the push rod return spring 23 is located outside the outer sleeve 21, and is movably sleeved on the part of the inner push rod 22 extending out of the outer sleeve 21. The push rod locking button 24 is mounted on the outer sleeve 21. The locking button spring 25 is mounted inside the outer sleeve 21 and movably sleeved on the rod body of the push rod locking button 24, and the initial state of the locking button spring 25 is in a compressed state that the push rod locking button 24 abuts against the inner push rod 22.
Referring to fig. 3 and 6, the outer tube wall of outer tube 21 includes an outer tube leading end 211, an outer tube middle 212, and an outer tube trailing end 213. A pair of first through grooves 214 are formed in the pipe wall of the outer sleeve 21, the first through grooves 214 extend from the outer sleeve front end 211 to the outer sleeve tail end 213 along the axial length of the outer sleeve 21, the first through grooves 214 form openings in the outer sleeve front end 211, the two first through grooves 214 are oppositely formed in the pipe wall of the outer sleeve 21 and are consistent in opening direction, the outer sleeve 21 is enabled to have certain elasticity by the first through grooves 214, and deformation of the outer sleeve 21 after stress is facilitated. Implant 1 is sleeved on the outer tube wall of outer tube 21 from the front end 211 of the outer tube. The outer diameter of the front end 211 of the outer sleeve is matched with the inner hole of the implant 1, and the outer diameter of the front end 211 of the outer sleeve is slightly larger than the inner hole of the implant 1, so that the implant 1 can be conveniently loaded and fixed. The outer tube wall of the front end 211 of the outer tube between the two first through grooves 214 is provided with a platform 2111, and the platform 2111 is abutted against the inner wall of the implant 1 to clamp the implant 1 by the outer tube 21. The platform 2111 is provided with a sinking table 2112, the sinking table 2112 forming a recess on the surface of the platform 2111, the sinking table 2112 surrounding the platform 2111 in the radial direction of the outer sleeve 21 for reducing the contact area of the inner wall of the implant 1 with the outer wall of the outer sleeve 21 to reduce the resistance when the outer sleeve 21 releases the implant 1. When the outer tube wall of the outer tube 21 at the first through grooves 214 is forced, the opening of the first through grooves 214 becomes smaller, the outer tube front end 211 located between the two first through grooves 214 clamps the broken end of the anterior cruciate ligament, and at the same time, the platform 2111 no longer abuts against the inner wall of the implant 1, and the outer tube 21 releases the clamp of the implant 1.
Referring to fig. 3, 4 and 6, the outer wall of the outer sleeve middle 212 at the first through groove 214 is provided with a second boss 2121 protruding outwards, so that the outer diameter of the outer sleeve front end 211 and the outer diameter of the outer sleeve tail end 213 are smaller than the outer diameter of the outer sleeve middle 212. The second boss 2121 of the outer sleeve middle 212 is configured to cooperate with the driving assembly 3 to reduce the opening of the first through slot 214, so that the outer sleeve 21 is deformed. The outer sleeve tail end 213 is provided with a base 2132, the base 2132 being secured to the drive assembly 3 to secure the outer sleeve 21 to the drive assembly 3.
Referring to fig. 4 and 6, a lumen 215 is provided in the outer sleeve 21, a part of the inner push rod 22 is accommodated in the lumen 215, a through hole 216 is provided at the outer sleeve tail end 213, a part of the inner push rod 22 passes through the lumen 215 through the through hole 216 to be located outside the outer sleeve 21, and the through hole 216 maintains the inner push rod 22 to move linearly in the lumen 215.
Referring to fig. 5 and 6, the outer sleeve end 213 is provided with a through hole (not shown), and a portion of the rod body of the push rod locking button 24 extends into the lumen 215 of the outer sleeve 21 through the through hole. A counter bore 2131 is provided on the inner wall of lumen 215 for mounting and securing lock button spring 25 to prevent lock button spring 25 from rocking.
Fig. 7 is a left side view of a loading delivery assembly of a prosthetic device compatible with the implant of the present invention for use with the prosthetic device. Referring to fig. 6 and 7, a pair of wedge-shaped bosses 2151 are provided on the inner wall of the lumen 215 of the outer sleeve 21 between the two first through grooves 214, and the two wedge-shaped bosses 2151 are disposed opposite to each other.
Fig. 8 is a schematic view showing the overall structure of an inner push rod of a prosthetic device adapted to the implant for a prosthetic device according to the present invention. Referring to fig. 4, 6 and 8, the inner push rod 22 includes a U-shaped fork 221, a guide post 222, a tail cap 223 and a push rod locking hole 224, the U-shaped fork 221 is disposed at a front end of the inner push rod 22 and is located in the lumen 215, and a second through groove 2211 is disposed on an open and closed end of the U-shaped fork 221. The wall thickness of the U-shaped fork 221 is smaller than the wall thickness of the second through groove 2211, so that the fork teeth of the U-shaped fork 221 are more elastic, and the implant 1 can be clamped conveniently. The axis of the opening of the U-shaped fork 221 is on the same line as the axis of the opening of the second through groove 2211, and the opening width of the U-shaped fork 221 is larger than the opening width of the second through groove 2211. The opening directions of the U-shaped fork 221, the first through groove 214 and the second through groove 2211 are all identical.
Referring to fig. 3, 4 and 7, the first through groove 214 is disposed orthogonally to the second through groove 2211 in the axial direction, and both wedge-shaped bosses 2151 are aligned with the second through groove 2211. When the outer tube walls of the outer sleeves 21 of the two first through slots 214 are pressed, one wedge-shaped boss 2151 is inserted into the second through slot 2211 from top to bottom, and simultaneously the other wedge-shaped boss 2151 is inserted into the second through slot 2211 from bottom to top, so that the opening of the second through slot 2211 is enlarged, the opening of the U-shaped fork 221 is gradually enlarged, the overall outer diameter of the U-shaped fork 221 is enlarged, the U-shaped fork 221 expands outwards along the opening of the first through slot 214, and the fork teeth of the U-shaped fork 221 extend out of the tube cavity 215 from the opening of the first through slot 214 and abut against the inner wall of the implant 1 to clamp the implant 1. When the two wedge-shaped bosses 2151 are fully inserted into the second through-groove 2211, the opening of the second through-groove 2211 stops becoming larger, the overall outer diameter of the U-shaped fork 221 no longer changes, and the implant 1 is transferred from the outer sleeve 21 to the U-shaped fork 221 of the inner push rod 22.
Referring to fig. 4, 6, 7 and 8, when the inner push rod 22 moves linearly in the lumen 215, the wedge-shaped boss 2151 moves linearly in the second through groove 2211 synchronously to ensure that the outer diameter of the clevis 221 remains unchanged when moving linearly in the lumen 215.
In some embodiments, a rectangular boss is disposed on the inner pipe wall of the part of the outer sleeve between the two first through grooves, and penetrates through the second through groove, and when the inner pipe wall of the outer sleeve opposite to the rectangular boss contacts with the inner pipe wall of the outer sleeve, the opening of the second through groove stops to be enlarged, so that the U-shaped fork is positioned.
In some specific embodiments, a guiding surface is disposed on one end of the rectangular boss inserted into the second through slot, so that the rectangular boss is convenient to insert into the second through slot.
Referring to fig. 4, 6 and 8, a guide post 222 is provided on a side of the inner push rod 22 located in the lumen 215, the guide post 222 is adjacent to the U-shaped fork 221, and one end of the guide post 222, which is far from the inner push rod 22, is in contact with an inner tube wall of the lumen 215, so that the inner push rod 22 moves linearly when moving in the lumen 215. The guide post 222 is cylindrical and is sleeved and fixed on the inner push rod 22.
Referring to fig. 4 and 7, the inner push rod 22 is provided with a push rod locking hole 224 for insertion of the push rod locking button 24 by a locking button spring 25 so as to lock the position of the inner push rod 22 toward the outer sleeve front end 211.
Referring to fig. 4, 5, 6 and 8, a tail cap 223 is provided on the tail end of the inner push rod 22 located outside the lumen 215, the push rod return spring 23 is movably sleeved on the tail end of the inner push rod 22 located outside the lumen 215, one end of the push rod return spring 23 is abutted on the tail cap 223, and the other end is abutted on the outer tube wall around the through hole 216 of the outer tube tail end 213. When the push rod locking button 24 no longer locks the inner push rod 22, the push rod return spring 23 moves the inner push rod 22 such that the guide post 222 moves toward the outer sleeve tail end 213 until the inner push rod 22 is retracted into the lumen 215 of the outer sleeve 21.
Fig. 9 is an exploded view of fig. 5. Referring to fig. 3, 4, 5, 7 and 8, the lock button spring 25 and the push rod lock button 24 together constitute a stopper mechanism. A through hole (not shown) is located in counterbore 2131, through which the tail end of the rod of push rod locking button 24 extends into lumen 215. A spherical pin 241 is provided on the stem tail end of the push rod locking button 24 within the lumen 215. The locking button spring 25 is movably sleeved on the tail end of the rod body of the push rod locking button 24 in the pipe cavity 215 and is positioned between the spherical pin 241 and the counter bore 2131. One end of the lock button spring 25 abuts against the spherical pin 241, and the other end abuts against the bottom of the counterbore 2131. The initial state compression state of the lock button spring 25, that is, the spherical pin 241 is abutted on the inner push rod 22 other than the push rod locking hole 224, the spherical pin 241 compresses the lock button spring 25, and the length of the lock button spring 25 becomes short. When the inner push rod 22 moves to the front end 211 of the outer sleeve by a certain distance under the external force, the push rod locking hole 224 is aligned with the spherical pin 241, the locking button spring 25 rebounds, and the spherical pin 241 is sprung into the push rod locking hole 224 by the locking button spring 25 to lock the position where the inner push rod 22 moves to the front end 211 of the outer sleeve.
Fig. 10 is a schematic view of the overall structure of a drive assembly of a prosthetic device adapted for use with the implant of the present invention. Referring to fig. 3, 6 and 10, the driving assembly 3 includes a sleeve 31, a connecting rod 32, a left bracket 33, a right bracket 34, a left handle 35, a right handle 36, a long pin 37 and a short pin 38, and the inner diameter of the sleeve 31 is larger than the outer diameter of the outer sleeve tail end 213 and smaller than the outer diameter of the outer sleeve middle 212 when not compressed. The sleeve 31 is provided with holes for weight reduction. Sleeve 31 passes through outer sleeve tail end 213 and contacts second boss 2121 of outer sleeve middle 212. The connecting rod 32 comprises a first connecting rod 321 and a second connecting rod 322, the first connecting rod 321 and the sleeve 31 are movably connected through a shaft pin, and the first connecting rod 321 and the left bracket 33 are movably connected through a shaft pin; the second connecting rod 322 is movably connected with the sleeve 31 through a shaft pin, and the second connecting rod 322 is movably connected with the right bracket 34 through a shaft pin. The left bracket 33 and the right bracket 34 are fixed by the long pin 37 after being overlapped with each other, and simultaneously, the two brackets can rotate around the long pin 37 to enable the two brackets to be close to each other or far from each other. The left bracket 33 is fixedly connected with a left handle 35, and the right bracket 34 is fixedly connected with a right handle 36. The left and right handles 35, 36 are fixed by the short pin 38 after being overlapped with each other, and simultaneously, the two handles can rotate around the short pin 38 to make the two handles approach to each other or separate from each other. Base 2132 is secured to long pin 37 such that outer sleeve 21 is secured to drive assembly 3. When the left handle 35 and the right handle 36 are close to each other, the left bracket 33 and the right bracket 34 are driven to be close to each other, the first connecting rod 321 and the second connecting rod 322 are driven to move towards the middle 212 of the outer sleeve while being close to the tail end 213 of the outer sleeve, and the sleeve is driven to move along the front end 211 of the outer sleeve 21. At the same time, the sleeve 31 presses the outer sleeve middle 212, so that the second boss 2121 is pressed and the outer sleeve middle 212 is gradually accommodated in the sleeve 31, and the opening of the first through groove 214 is reduced. The connection between the second boss 2121 and the outer sleeve tail end 213 is provided with a slope, so that the resistance is reduced when the sleeve 31 accommodates the outer sleeve middle 212.
A prosthetic device adapted to the implant of the present invention for use in a prosthetic device for repairing a target object using the implant for use in a prosthetic device as described above, comprising the steps of:
s1: sleeving the front end of the outer sleeve on the breaking end of the target object;
s2: applying pressure to the outer tube wall of the outer tube at the first through grooves by using the driving assembly, so that the opening of the first through grooves is reduced, the front end of the outer tube clamps the fracture end of the target, meanwhile, a first boss arranged on the inner tube wall of a part of the outer tube between the first through grooves is driven to be inserted into the second through grooves, the opening of the second through grooves is increased, the U-shaped fork is expanded outwards along the first through grooves, the implant is clamped, and meanwhile, the outer tube releases the clamping of the implant;
s3: pushing the inner push rod to move towards the front end of the outer sleeve, pushing the clamped implant out of the front end of the outer sleeve and sleeving the implant on the target;
s4: removing pressure exerted by the drive assembly on the outer tube wall of the outer cannula, causing the inner pushrod to release the grip on the implant, and causing the opening of the first through slot to revert; and pumping the repairing device away from the target object.
The using method of the repairing device has the beneficial effects that:
the repair device is used for repairing the anterior cruciate ligament, repeated threading actions are not needed to be carried out on the anterior cruciate ligament, the ligament incised wound phenomenon can be effectively prevented, meanwhile, the surgical experience of doctors is improved, the working efficiency of the doctors is improved, and the surgical risk is reduced.
In some embodiments, a limiting mechanism is disposed on the repairing device, and in the step S3, when the inner push rod pushes the implant out of the outer sleeve, the limiting mechanism locks the distance that the inner push rod moves towards the front end of the outer sleeve due to force, so as to sleeve the implant on the target object.
In some embodiments, the repairing device is provided with a reset mechanism, and before the repairing device is pulled out from the target in S4, the method further includes the steps of: and the locking of the limiting mechanism to the inner push rod is released, and the reset mechanism drives the inner push rod to retract to the outer sleeve to realize reset.
Fig. 11 is a graph showing the change in the inner diameter of an implant according to an embodiment of the present invention when the implant is transferred from an outer sleeve of a prosthetic device adapted for use with the implant of the present invention to an inner pushrod. The repairing device of the invention is used for repairing the anterior cruciate ligament and comprises the following steps:
s0: the repairing device of the invention is provided, and the net sleeve structure 11 of the implant 1 is sleeved on the outer sleeve 21 from the front end 211 of the outer sleeve of the repairing device. Referring to FIG. 11, the inside diameter of the net structure 11 is shown on the left side of FIG. 10The inner diameter of the structure 11 is H 0 The inner diameter width of the net cover structure 11 is L 0 The bottom surfaces of the two wedge-shaped bosses 2151 are in contact with the second through groove 2211;
s1: sleeving the front end 211 of the outer sleeve on the broken end of the anterior cruciate ligament;
s2: applying pressure to the outer tube wall of the outer sleeve 21 at the first through groove 214 to reduce the opening of the first through groove 214 so that the front end 211 of the outer sleeve clamps the broken end of the anterior cruciate ligament, and simultaneously, driving the wedge-shaped boss 2151 to be inserted into the second through groove 2211 to enlarge the opening of the second through groove 2211, so that the U-shaped fork 221 expands outwards along the first through groove 214 to clamp the net sleeve structure 11, and simultaneously, enabling the outer sleeve 21 to release the clamp of the net sleeve structure 11;
s3: pushing the inner push rod 22 to move towards the front end 211 of the outer sleeve, pushing the clamped net sleeve structure 11 out of the front end 211 of the outer sleeve and sleeving the clamped net sleeve structure on the broken end of the anterior cruciate ligament;
s4: removing the pressure applied to the outer tube wall of the outer tube 21, causing the inner push rod 22 to release the grip on the net cover structure 11, and causing the opening of the first through slot 214 to return; the prosthetic device is withdrawn from the fractured end of the anterior cruciate ligament.
The step S2 specifically includes the following steps:
s21: applying a force to the left and right handles 35, 36 such that the left and right handles 35, 36 move relative to each other, driving the left and right brackets 33, 34 to move relative to each other, thereby moving the first and second links 321, 322 both toward the outer sleeve 21 and along the outer sleeve 21 toward the outer sleeve front end 211;
s22: the first connecting rod 321 and the second connecting rod 322 drive the sleeve 31 to move along the outer sleeve 21 to the front end 211 of the outer sleeve;
s23: the sleeve 31 presses the second boss 2121 on the outer sleeve middle 212, and gradually receives the outer sleeve middle 212 together with the second boss 2121 in the sleeve 31;
s24: the middle part 212 of the outer sleeve is extruded, the opening of the first through groove 214 is reduced, the front end 211 of the outer sleeve clamps the broken end of the anterior cruciate ligament, the outer diameter of the front end 211 of the outer sleeve is reduced, and the platform 2111 on the outer sleeve 21 releases the clamping of the net sleeve structure 11;
s25: the two wedge-shaped bosses 2151 are simultaneously and gradually inserted into the second through groove 2211, so that the opening of the second through groove 2211 is gradually enlarged, the U-shaped fork 221 gradually expands outwards along the first through groove 214, the two fork teeth of the U-shaped fork 221 respectively expand outwards along the first through groove 214 and extend out of the first through groove 214, when the two wedge-shaped bosses 2151 are completely inserted into the second through groove 2211, the U-shaped fork 221 stops expanding, the two fork teeth of the U-shaped fork 221 completely extend out of the pipe cavity 215 from the first through groove 214 and are abutted against the inner wall of the net sleeve structure 11, the net sleeve structure 11 is clamped, and the net sleeve structure 11 is transferred from the outer sleeve 21 to the U-shaped fork 221 of the inner push rod 22. Referring to FIG. 11, the inside diameter of the net cover structure 11 is shown on the right side in FIG. 10, and the inside diameter of the net cover structure 11 is at a height of H 0 Reduced to H 1 The inner diameter width of the implant is L 0 Become larger to L 1 The two wedge-shaped bosses 2151 are fully inserted into the second through-slots 2211.
The step S3 specifically includes the following steps:
s31: applying a force along the inner push rod 22 to the tail cap 223, so that the inner push rod 22 moves towards the front end 211 of the outer sleeve in the tube cavity 215, the guide post 222 ensures that the inner push rod 22 moves linearly in the tube cavity 215, and the push rod return spring 23 is compressed;
s32: when the inner push rod 22 moves to the initial state compression state of the locking button spring 25 and the push rod locking hole 224 is aligned with the push rod locking button 24, under the rebound of the locking button spring 25, the locking button spring 25 drives the spherical pin 241 to spring into the push rod locking hole 224 to lock the movement distance of the inner push rod 22, at this time, the inner push rod 22 just pushes out the net sleeve structure 11, and the net sleeve structure 11 is sleeved at the breaking end of the anterior cruciate ligament.
The step S4 specifically includes the following steps:
s41: removing the force applied to the left and right handles 35, 36 such that the left and right handles 35, 36 move away from each other, driving the left and right brackets 33, 34 away from each other, thereby moving the first and second links 321, 322 away from the outer sleeve 21 and along the outer sleeve 21 toward the outer sleeve tail end 213;
s42: the first connecting rod 321 and the second connecting rod 322 drive the sleeve 31 to move along the outer sleeve 21 towards the outer sleeve tail end 213;
s43: sleeve 31 releases outer sleeve middle 212 within sleeve 31 along with second boss 2121;
s44: the pressure on the middle part 212 of the outer sleeve disappears, the opening of the first through groove 214 returns, the front end 211 of the outer sleeve releases the broken end of the anterior cruciate ligament, and the outer diameter of the front end 211 of the outer sleeve returns;
s45: the two wedge-shaped bosses 2151 are simultaneously gradually separated from the second through groove 2211, so that the opening of the second through groove 2211 is gradually restored, the U-shaped fork 221 gradually contracts inwards along the first through groove 214, the two fork teeth of the U-shaped fork 221 respectively contract inwards along the first through groove 214 and are accommodated in the pipe cavity 215 of the outer sleeve 21 between the first through grooves, when the two wedge-shaped bosses 2151 are completely separated from the second through groove 2211, the U-shaped fork 221 stops contracting, the two fork teeth of the U-shaped fork 221 are completely accommodated in the pipe cavity 215, the clamping of the net sleeve structure 11 is released, and the net sleeve structure 11 is sleeved at the fracture end of the anterior cruciate ligament;
s46: pulling up the push rod locking button 24 in a direction away from the outer sleeve 21, and rebounding the push rod return spring 23 to drive the tail cap 223 to be away from the outer sleeve tail end 213 and drive the inner push rod 22 to retract into the outer sleeve 21;
s47: the prosthetic device is withdrawn from the fractured end of the anterior cruciate ligament.
After the repairing device is removed, the suture 12 on the net sleeve structure 11 is tensioned, the net sleeve structure 11 is tightened, bundling and fixing of the anterior cruciate ligament are achieved, and finally, according to operation requirements, the hanging and fixing of the broken end of the anterior cruciate ligament are achieved by adopting a conventional treatment mode (such as bone anchors or titanium plates), so that repairing of the anterior cruciate ligament is achieved.
While embodiments of the present invention have been described in detail hereinabove, it will be apparent to those skilled in the art that various modifications and variations can be made to these embodiments. It is to be understood that such modifications and variations are within the scope and spirit of the present invention as set forth in the following claims. Moreover, the invention described herein is capable of other embodiments and of being practiced or of being carried out in various ways.
Claims (10)
1. An implant suitable for a repairing device is characterized by comprising a net sleeve structure and a suture, wherein the net sleeve structure is used for being sleeved on the front end of an outer sleeve of the repairing device and clamped by the outer tube wall at the front end of the outer sleeve, the suture is wound on the side wall of the net sleeve structure along the circumferential direction of the net sleeve structure, and two ends of the suture penetrate out from the side surface of the net sleeve structure;
when the net sleeve structure is pushed out by the repairing device to be sleeved on a target object, the suture is tightened, so that the net sleeve structure is fixed on the target object.
2. The implant for use in a prosthetic device of claim 1, wherein the mesh structure is formed by braiding wires.
3. The implant for use in a prosthetic device of claim 1, wherein hollowed-out mesh structures are disposed on the side walls of the mesh structure, wherein the mesh structures have a plurality of meshes, and wherein the suture is movably connected to the mesh structure by repeatedly passing through a plurality of the meshes.
4. An implant for use in a prosthetic device according to claim 3, wherein when the number of sutures is one, one end of the suture is threaded from the mesh of the mesh structure near the front end of the target object, sequentially threaded around the circumference of the mesh structure through the mesh from the mesh structure near the front end of the target object to the middle of the mesh structure, and threaded out from the mesh of the middle of the mesh structure, in correspondence with the orientation of the other end of the suture.
5. An implant for use in a prosthetic device according to claim 3, wherein when the number of sutures is plural, one end of the suture is threaded from the mesh of the mesh structure near the front end of the target object, threaded from the mesh of the mesh structure near the front end of the target object around the circumference of the mesh structure, and oriented in the same direction as the other end of the suture, both ends of the suture being located on the same radial cross section of the mesh structure;
the plurality of sutures are sequentially arranged on the front end of the net cover structure close to the target object.
6. The implant of claim 5, wherein a plurality of said sutures are equally spaced along the axis of said mesh structure.
7. The implant of claim 1, wherein the mesh structure is cylindrical and the cross-section of the mesh structure along its radial direction is circular.
8. An implant for use in a prosthetic device according to claim 3, wherein the mesh is circular or polygonal in shape.
9. The implant of claim 1, wherein the mesh structure material comprises ultra-high molecular weight polyethylene.
10. The implant of claim 1, wherein the suture material comprises ultra-high molecular weight polyethylene.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311309650.XA CN117100340A (en) | 2023-10-10 | 2023-10-10 | Implant suitable for use in prosthetic devices |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311309650.XA CN117100340A (en) | 2023-10-10 | 2023-10-10 | Implant suitable for use in prosthetic devices |
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| US20130013065A1 (en) * | 2011-07-07 | 2013-01-10 | Matthew Bills | Tendon repair device and method |
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