CN117243654B - Loading and delivery assembly for prosthetic devices - Google Patents
Loading and delivery assembly for prosthetic devices Download PDFInfo
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- CN117243654B CN117243654B CN202311309780.3A CN202311309780A CN117243654B CN 117243654 B CN117243654 B CN 117243654B CN 202311309780 A CN202311309780 A CN 202311309780A CN 117243654 B CN117243654 B CN 117243654B
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- 239000007943 implant Substances 0.000 claims abstract description 99
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 230000007246 mechanism Effects 0.000 claims description 13
- 230000009471 action Effects 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 210000001264 anterior cruciate ligament Anatomy 0.000 abstract description 56
- 230000008439 repair process Effects 0.000 description 7
- 210000001519 tissue Anatomy 0.000 description 7
- 210000003041 ligament Anatomy 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000001356 surgical procedure Methods 0.000 description 4
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 description 3
- 238000009954 braiding Methods 0.000 description 3
- 238000002513 implantation Methods 0.000 description 3
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 description 3
- 206010003246 arthritis Diseases 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 210000000629 knee joint Anatomy 0.000 description 2
- 239000000463 material Substances 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
- 230000008569 process Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 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
- 230000002860 competitive effect Effects 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 210000000426 patellar ligament Anatomy 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
- 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 a loading and conveying assembly for a repairing device, which comprises an outer sleeve and an inner push rod; a pair of first through grooves are formed in the pipe wall of the outer sleeve, the front end of the outer sleeve is sleeved with an implant, and a first boss is arranged on the inner pipe wall of a part of the outer sleeve; the inner push rod is arranged in the outer sleeve in a penetrating way, and the front end of the inner push rod is provided with a second through groove; the first through groove and the second through groove are orthogonally arranged along the axial direction, and the first boss is aligned with the second through groove; when the outer tube wall of the outer tube is pressed, the opening of the first through groove is reduced, the first boss is driven to be inserted into the second through groove, the U-shaped fork is expanded outwards to clamp the implant, and meanwhile, the outer tube releases the implant; when the inner push rod is forced to move towards the front end of the outer sleeve, the implant is pushed out of the outer sleeve; after the implant is pushed out, the pressure on the outer sleeve is removed, causing the inner pushrod to release the implant. The loading delivery assembly for a prosthetic device of the present invention delivers an implant precisely to the fractured end of the anterior cruciate ligament.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a loading and conveying assembly 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.
The current anterior cruciate ligament reconstruction surgery mainly faces the following two problems: one is from which tissue is obtained for reconstructing the ligament. These tissues may come from some place in the body, but transplanting tissues from these other locations presents problems including pain, weakness, and changes in joint mechanics; some people may choose allografts, but these allografts are weaker than normal anterior cruciate ligaments, especially in young athletes, where the failure rate of the graft is high, and in most cases, allografts are used by people 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 movement mechanism 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: first, pain is reduced because there is no need to obtain transplanted tissue; secondly, without large incisions, the surgery is completely arthroscopic; 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 ARTHREX mesh. In the current operation of anterior cruciate ligament repair, in order to strengthen the suture strength, repeated threading actions on the ligament are required 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 because of the narrow space; secondly, the ligament is easy to be cut by repeated threading in the suture process, so that the ligament is split.
In order to avoid threading, the anterior cruciate ligament can be repaired by delivering the implant during the repair operation, but how to clamp and fix the broken end of the anterior cruciate ligament during the repair operation and how to accurately transport the implant to the broken end of the anterior cruciate ligament is a problem to be solved.
Accordingly, there is a need to provide a new type of load delivery assembly for prosthetic devices that addresses the above-described problems in the prior art.
Disclosure of Invention
The present invention aims to solve at least one of the above-mentioned drawbacks of the prior art and to provide a loading conveyor assembly for a prosthetic device.
To achieve the above object, the loading delivery assembly for a prosthetic device of the present invention includes an outer sleeve and an inner push rod; a pair of first through grooves are formed in the pipe wall of the outer sleeve in the axial direction, an opening is formed in the front end of the outer sleeve, the front end of the outer sleeve is used for sleeving an implant, the implant is clamped through the outer pipe wall of the outer sleeve between the first through grooves, and a first boss is arranged on the inner pipe wall of a part of the outer sleeve between the two first through grooves; the inner push rod is arranged in the outer sleeve in a penetrating way, a U-shaped fork is arranged at the front end of the inner push rod, and a second through groove is arranged at the opening and closing end of the U-shaped fork; the opening directions of the first through groove and the second through groove are consistent, the first through groove and the second through groove are orthogonally arranged along the axial direction, and the first boss is aligned with the second through groove; when the outer tube wall of the outer tube at the first through groove is pressed, the opening of the first through groove is reduced, the first boss is driven to be inserted into the second through groove, the opening of the second through groove is enlarged, the U-shaped fork is driven to expand outwards along the first through groove, the implant is clamped, and meanwhile, the outer tube releases the clamping of the implant; when the inner push rod is forced to move towards the front end of the outer sleeve, the clamped implant is pushed out of the front end of the outer sleeve; after the implant is pushed out, the pressure on the outer sleeve is removed, causing the inner pushrod to release the grip on the implant.
The loading and conveying assembly for the repairing device has the beneficial effects that:
When the outer tube wall of the outer tube at the first through groove is pressed, the opening of the first through groove is reduced, the first boss is driven to be inserted into the second through groove, the opening of the second through groove is enlarged, the U-shaped fork is driven to expand outwards along the first through groove, the implant is clamped, meanwhile, the outer tube releases the clamping of the implant, and the front end of the outer tube clamps the broken end of the anterior cruciate ligament; when the inner push rod is forced to move towards the front end of the outer sleeve, the clamped implant is pushed out of the front end of the outer sleeve, and the implant is sleeved at the broken end of the anterior cruciate ligament; after the implant is pushed out, the implant is tightened, the broken ends of the anterior cruciate ligaments are bundled, the pressure applied on the outer sleeve is removed, and the inner push rod releases the clamping of the implant, so that the implant implantation is completed. The loading and conveying assembly for the repairing device can well clamp and fix the broken ends of the anterior cruciate ligaments, and simultaneously accurately convey the implant to the broken ends of the anterior cruciate ligaments, so that the bundling of the implant to the broken ends of the anterior cruciate ligaments is completed.
Further, when radial pressure is applied to the outer tube wall of the outer tube at the first through groove, the opening of the first through groove is made smaller, and when the pressure applied to the outer tube is removed, the opening of the first through groove is restored.
Further, a second boss is arranged on the outer pipe wall of the outer sleeve at the first through groove, and when radial pressure is applied to the second boss, the opening of the first through groove is reduced.
Further, the first boss comprises a pair of wedge-shaped bosses which are respectively arranged on the inner pipe wall of the outer sleeve part between the two first through grooves, when the outer pipe wall of the outer sleeve at the first through grooves is pressed, the two wedge-shaped bosses are relatively inserted into the second through grooves, and when the wedge-shaped bosses are completely inserted, the opening of the second through grooves stops to be enlarged, and the U-shaped fork is positioned.
Further, the device also comprises a limiting mechanism for locking the distance that the inner push rod is forced to move towards the front end of the outer sleeve.
Further, the limiting mechanism comprises a locking button spring and a push rod locking button, the tail end of the push rod locking button penetrates through the pipe wall of the tail end of the outer sleeve, and the locking button spring is positioned in the outer sleeve and is movably sleeved on the tail end of the push rod locking button; a counter bore is formed in the inner pipe wall of the outer sleeve, the tail end of the push rod locking button penetrates through the counter bore and stretches into the outer sleeve, a spherical pin is arranged on the tail end of the push rod locking button, one end of the locking button spring is abutted with the spherical pin, and the other end of the locking button spring is abutted with the bottom of the counter bore; the implant locking device is characterized in that a push rod locking hole is formed in the inner push rod, the initial state of the locking button spring is a compression state that the spherical pin is abutted to the inner push rod outside the push rod locking hole, when the inner push rod moves to enable the push rod locking hole to be aligned with the push rod locking button, the push rod locking button enables the spherical pin to spring into the push rod locking hole under the action of the locking button spring, and the position of the inner push rod after pushing out the implant is locked.
Further, a guide post is arranged on the side face of the inner push rod, is positioned in the outer sleeve and is in contact with the inner pipe wall of the outer sleeve, so that the inner push rod is guaranteed to do linear motion in the outer sleeve.
Further, the device also comprises a push rod reset spring, wherein the tail end of the inner push rod penetrates out from the tail end of the outer sleeve, the push rod reset spring is sleeved on the tail end of the inner push rod, a tail cap is arranged on the tail end of the inner push rod, one end of the push rod reset spring is abutted against the tail end of the outer sleeve, and the other end of the push rod reset spring is abutted against the tail cap; when the push rod locking button is separated from the push rod locking hole, the push rod reset spring drives the inner push rod to retract into the outer sleeve so as to reset.
Further, a platform is arranged on the outer tube wall of the outer tube between the first through grooves at the front end of the outer tube, and the platform is used for clamping the inner wall of the implant.
Further, a sinking table is arranged on the outer pipe wall of the front end of the outer sleeve between the first through grooves, and surrounds the platform along the radial direction of the outer sleeve and is used for reducing the contact area between the inner wall of the implant and the outer wall of the outer sleeve.
Further, the first through groove extends from a front end of the outer sleeve to a rear end of the outer sleeve in an axial direction of the outer sleeve.
Further, the opening direction of the U-shaped fork is consistent with that of the second through groove, and the opening width of the U-shaped fork is larger than that of the second through groove.
Drawings
FIG. 1 is a schematic view of the overall structure of a loading conveyor assembly according to an embodiment of the present invention;
FIG. 2 is an enlarged view of FIG. 1 at A;
FIG. 3 is a schematic view of the overall construction of a prosthetic device compatible with the loading delivery assembly for a prosthetic device of the present invention;
FIG. 4 is a schematic view of the overall structure of an embodiment of the outer sleeve according to the present invention;
FIG. 5 is a left side view of an embodiment load conveyor assembly provided by the present invention;
FIG. 6 is a schematic view of the overall structure of the push rod according to the embodiment of the present invention;
FIG. 7 is an exploded view of FIG. 2;
FIG. 8 is a schematic view of the overall construction of a drive assembly of the prosthetic device adapted to the load delivery assembly for the prosthetic device of the present invention;
FIG. 9 is a schematic view of the overall structure of an implant compatible with the loading delivery assembly for a prosthetic device of the present invention;
fig. 10 is a graph of the change in the inner diameter of an implant as it is transferred from an outer cannula to an inner pushrod in accordance with the loading delivery assembly for a prosthetic device of the present invention.
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.
In view of the problems with the prior art, embodiments of the present invention provide a loading delivery assembly for a prosthetic device, comprising an outer cannula and an inner pushrod; a pair of first through grooves are formed in the pipe wall of the outer sleeve in the axial direction, an opening is formed in the front end of the outer sleeve, the front end of the outer sleeve is used for sleeving an implant, the implant is clamped through the outer pipe wall of the outer sleeve between the first through grooves, and a first boss is arranged on the inner pipe wall of a part of the outer sleeve between the two first through grooves; the inner push rod is arranged in the outer sleeve in a penetrating way, a U-shaped fork is arranged at the front end of the inner push rod, and a second through groove is arranged at the opening and closing end of the U-shaped fork; the opening directions of the first through groove and the second through groove are consistent, the first through groove and the second through groove are orthogonally arranged along the axial direction, and the first boss is aligned with the second through groove; when the outer tube wall of the outer tube at the first through groove is pressed, the opening of the first through groove is reduced, the first boss is driven to be inserted into the second through groove, the opening of the second through groove is enlarged, the U-shaped fork is driven to expand outwards along the first through groove, the implant is clamped, and meanwhile, the outer tube releases the clamping of the implant; when the inner push rod is forced to move towards the front end of the outer sleeve, the clamped implant is pushed out of the front end of the outer sleeve; after the implant is pushed out, the pressure on the outer sleeve is removed, causing the inner pushrod to release the grip on the implant.
The loading and conveying assembly for the repairing device has the advantages that:
When the outer tube wall of the outer tube at the first through groove is pressed, the opening of the first through groove is reduced, the first boss is driven to be inserted into the second through groove, the opening of the second through groove is enlarged, the U-shaped fork is driven to expand outwards along the first through groove, the implant is clamped, meanwhile, the outer tube releases the clamping of the implant, and the front end of the outer tube clamps the broken end of the anterior cruciate ligament; when the inner push rod is forced to move towards the front end of the outer sleeve, the clamped implant is pushed out of the front end of the outer sleeve, and the implant is sleeved at the broken end of the anterior cruciate ligament; after the implant is pushed out, the implant is tightened, the broken ends of the anterior cruciate ligaments are bundled, the pressure applied on the outer sleeve is removed, and the inner push rod releases the clamping of the implant, so that the implant implantation is completed. The loading and conveying assembly for the repairing device can well clamp and fix the broken ends of the anterior cruciate ligaments, and simultaneously accurately convey the implant to the broken ends of the anterior cruciate ligaments, so that the bundling of the implant to the broken ends of the anterior cruciate ligaments is completed.
In some embodiments, the first through slot extends in an axial direction of the outer sleeve from a leading end of the outer sleeve to a trailing end of the outer sleeve.
In some embodiments, a platform is provided on an outer tube wall of the outer tube between the first through slots of the front end of the outer tube, the platform being for clamping an inner wall of the implant.
In some embodiments, a sinking table is disposed on an outer tube wall of the front end of the outer tube between the first through grooves, and surrounds the platform along a radial direction of the outer tube, so as to reduce a contact area between an inner wall of the implant and an outer wall of the outer tube.
In some embodiments, the opening of the first through-going groove is made smaller when radial pressure is applied to the outer tube wall of the outer tube at the first through-going groove, and the opening of the first through-going groove is restored when pressure applied to the outer tube is removed.
In some embodiments, a second boss is disposed on an outer wall of the outer sleeve at the first through groove, and when radial pressure is applied to the second boss, an opening of the first through groove is reduced.
FIG. 1 is a schematic view of the overall structure of a loading conveyor assembly according to an embodiment of the present invention; FIG. 2 is an enlarged view of FIG. 1 at A; fig. 3 is a schematic view of the overall structure of a prosthetic device adapted to the loading delivery assembly for a prosthetic device of the present invention. Referring to fig. 1, 2 and 3, 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.
Fig. 4 is a schematic view of the overall structure of an outer sleeve according to an embodiment of the present invention. Referring to fig. 1 and 4, 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. 1,3 and 4, the outer tube wall of the outer tube 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 tube front end 211 and the outer diameter of the outer tube tail end 213 are smaller than the outer diameter of the outer tube 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. 1 and 4, 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. 2 and 4, 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.
In some embodiments, the first boss includes a pair of wedge-shaped bosses on the inner pipe wall of the outer sleeve between the two first through grooves, when the outer pipe wall of the outer sleeve at the first through groove is pressed, the two wedge-shaped bosses are relatively inserted into the second through groove, and when the two wedge-shaped bosses are completely inserted, the opening of the second through groove stops to be enlarged, and the U-shaped fork is positioned.
Fig. 5 is a left side view of an embodiment load conveyor assembly provided by the present invention. Referring to fig. 4 and 5, 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.
In some embodiments, the opening of the U-shaped fork is in line with the opening direction of the second through slot, and the opening width of the U-shaped fork is greater than the opening width of the second through slot.
Fig. 6 is a schematic view of the overall structure of the push rod according to the embodiment of the present invention. Referring to fig. 1, 4 and 6, 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. 1, 3 and 5, 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. 1, 4, 5 and 6, when the inner push rod 22 moves linearly in the lumen 215, the wedge-shaped boss 2151 moves linearly in synchronization with the second through groove 2211 to ensure that the outer diameter of the clevis 221 remains unchanged when moving linearly in the lumen 215.
In some embodiments, the first boss is a rectangular boss disposed on a part of an inner pipe wall of the outer sleeve between the two first through grooves, the rectangular boss penetrates 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, an 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.
In some embodiments, a guide post is disposed on a side surface of the inner push rod, and the guide post is located in the outer sleeve and contacts with an inner tube wall of the outer sleeve, so as to ensure that the inner push rod moves linearly in the outer sleeve.
Referring to fig. 1, 4 and 6, 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.
In some embodiments, the device further comprises a limiting mechanism for locking the distance that the inner push rod is forced to move towards the front end of the outer sleeve.
Referring to fig. 2 and 6, 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 to lock the position of the inner push rod 22 toward the outer sleeve front end 211.
In some embodiments, the limiting mechanism comprises a locking button spring and a push rod locking button, wherein the tail end of the push rod locking button penetrates through the pipe wall of the tail end of the outer sleeve, and the locking button spring is positioned in the outer sleeve and is movably sleeved on the tail end of the push rod locking button; a counter bore is formed in the inner pipe wall of the outer sleeve, the tail end of the push rod locking button penetrates through the counter bore and stretches into the outer sleeve, a spherical pin is arranged on the tail end of the push rod locking button, one end of the locking button spring is abutted with the spherical pin, and the other end of the locking button spring is abutted with the bottom of the counter bore; the implant locking device is characterized in that a push rod locking hole is formed in the inner push rod, the initial state of the locking button spring is a compression state that the spherical pin is abutted to the inner push rod outside the push rod locking hole, when the inner push rod moves to enable the push rod locking hole to be aligned with the push rod locking button, the push rod locking button enables the spherical pin to spring into the push rod locking hole under the action of the locking button spring, and the position of the inner push rod after pushing out the implant is locked.
Fig. 7 is an exploded view of fig. 2. Referring to fig. 1,2, 4, 6 and 7, 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.
In some embodiments, the device further comprises a push rod reset spring, wherein the tail end of the inner push rod penetrates out of the tail end of the outer sleeve, the push rod reset spring is sleeved on the tail end of the inner push rod, a tail cap is arranged on the tail end of the inner push rod, one end of the push rod reset spring is abutted against the tail end of the outer sleeve, and the other end of the push rod reset spring is abutted against the tail cap; when the push rod locking button is separated from the push rod locking hole, the push rod reset spring drives the inner push rod to retract into the outer sleeve so as to reset.
Referring to fig. 1,2, 4 and 6, 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.
The prosthetic device adapted for use with the load delivery assembly of the prosthetic device of the present invention further comprises a drive assembly.
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. 8 is a schematic view showing the overall structure of a driving assembly of the prosthetic device adapted to the loading conveyor assembly for the prosthetic device of the present invention. Referring to fig. 1, 4 and 8, 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.
The implant structure compatible with the loading delivery assembly for a prosthetic device of the present invention is as follows:
Fig. 9 is a schematic view of the overall structure of an implant compatible with the loading delivery assembly for a prosthetic device of the present invention. Referring to fig. 1 and 9, 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.
Referring to fig. 1, 4 and 9, 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 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 sequentially penetrate from the front end 111 of the net sleeve structure along the direction B into a grid a of the first row of grids, a second row of grids and a third row of grids … …, the second rope end 122 of one suture 12 penetrates from a grid a of the first row of grids, sequentially penetrates from a grid B of the first row of grids along the circumferential winding of the net sleeve structure 11, penetrates from a grid c of the first row of grids, penetrates from a grid d of the first row of grids, finally penetrates from a 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, the suture is circular or oblate in cross-section.
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.
The repairing device matched with the loading and conveying assembly for the repairing device comprises the following using steps:
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 groove by using the driving assembly, so that the opening of the first through groove is reduced, the front end of the outer tube clamps the fracture end of the target, meanwhile, the first boss is driven to be inserted into the second through groove, the opening of the second through groove is increased, the U-shaped fork is expanded outwards along the first through groove to clamp the implant, and meanwhile, the outer tube releases the clamp 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 applied to the outer tube wall of the outer cannula using the drive assembly, 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. 10 is a graph of the change in the inner diameter of an implant as it is transferred from an outer cannula to an inner pushrod in accordance with the loading delivery assembly for a prosthetic device of the present invention. 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. 10, at this time, the inner diameter of the net cover structure 11 is shown on the left side in fig. 10, the inner diameter of the net cover structure 11 is H 0, the inner diameter of the net cover structure 11 is L 0, and 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. 10, at this time, the inner diameter of the net cover structure 11 is shown on the right side of fig. 10, the inner diameter height of the net cover structure 11 is reduced from H 0 to H 1, the inner diameter width of the implant is increased from L 0 to L 1, and the two wedge-shaped bosses 2151 are completely 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. A loading delivery assembly for a prosthetic device comprising an outer cannula and an inner pushrod;
A pair of first through grooves are formed in the pipe wall of the outer sleeve in the axial direction, an opening is formed in the front end of the outer sleeve, the front end of the outer sleeve is used for sleeving an implant, the implant is clamped through the outer pipe wall of the outer sleeve between the first through grooves, and a first boss is arranged on the inner pipe wall of a part of the outer sleeve between the two first through grooves;
The inner push rod is arranged in the outer sleeve in a penetrating way, a U-shaped fork is arranged at the front end of the inner push rod, and a second through groove is arranged at the opening and closing end of the U-shaped fork;
the opening directions of the first through groove and the second through groove are consistent, the first through groove and the second through groove are orthogonally arranged along the axial direction, and the first boss is aligned with the second through groove;
When the outer tube wall of the outer tube at the first through groove is pressed, the opening of the first through groove is reduced, the first boss is driven to be inserted into the second through groove, the opening of the second through groove is enlarged, the U-shaped fork is driven to expand outwards along the first through groove, the implant is clamped, and meanwhile, the outer tube releases the clamping of the implant;
When the inner push rod is forced to move towards the front end of the outer sleeve, the clamped implant is pushed out of the front end of the outer sleeve;
after the implant is pushed out, the pressure on the outer sleeve is removed, causing the inner pushrod to release the grip on the implant.
2. The loading delivery assembly for a prosthetic device of claim 1, wherein the opening of the first through slot is made smaller when radial pressure is applied to the outer tube wall of the outer tube at the first through slot, and wherein the opening of the first through slot is restored when pressure applied to the outer tube is removed.
3. The loading delivery assembly for a prosthetic device of claim 1, wherein said first boss comprises a pair of wedge-shaped bosses on a portion of an inner tube wall of said outer sleeve divided between said first through slots, said wedge-shaped bosses being oppositely inserted into said second through slots when an outer tube wall of said outer sleeve at said first through slots is compressed and stopping an opening of said second through slots from becoming larger upon full insertion, positioning said clevis.
4. The load delivery assembly for a prosthetic device of claim 1, further comprising a stop mechanism for locking the distance the inner pushrod is forced toward the forward end of the outer sleeve.
5. The loading delivery assembly for a prosthetic device of claim 4, wherein the limit mechanism comprises a lock button spring and a push rod lock button, the tail end of the push rod lock button extending through the wall of the tail end of the outer sleeve, the lock button spring being located within the outer sleeve and movably sleeved on the tail end of the push rod lock button; a counter bore is formed in the inner pipe wall of the outer sleeve, the tail end of the push rod locking button penetrates through the counter bore and stretches into the outer sleeve, a spherical pin is arranged on the tail end of the push rod locking button, one end of the locking button spring is abutted with the spherical pin, and the other end of the locking button spring is abutted with the bottom of the counter bore;
the implant locking device is characterized in that a push rod locking hole is formed in the inner push rod, the initial state of the locking button spring is a compression state that the spherical pin is abutted to the inner push rod outside the push rod locking hole, when the inner push rod moves to enable the push rod locking hole to be aligned with the push rod locking button, the push rod locking button enables the spherical pin to spring into the push rod locking hole under the action of the locking button spring, and the position of the inner push rod after pushing out the implant is locked.
6. The loading delivery assembly for a prosthetic device of claim 1, wherein the inner pushrod is provided with a guide post on a side surface thereof, the guide post being positioned within the outer sleeve and in contact with an inner tube wall of the outer sleeve to ensure linear movement of the inner pushrod within the outer sleeve.
7. The loading delivery assembly for a prosthetic device of claim 5, further comprising a push rod return spring, the tail end of the inner push rod extending from the tail end of the outer sleeve, the push rod return spring being sleeved on the tail end of the inner push rod, the tail end of the inner push rod being provided with a tail cap, one end of the push rod return spring abutting the tail end of the outer sleeve, the other end abutting the tail cap; when the push rod locking button is separated from the push rod locking hole, the push rod reset spring drives the inner push rod to retract into the outer sleeve so as to reset.
8. The loading delivery assembly for a prosthetic device of claim 1, wherein a platform is provided on an outer tube wall of the outer tube between the first through slots of the forward end of the outer tube, the platform being for gripping an inner wall of the implant.
9. The load delivery assembly for a prosthetic device of claim 8, wherein a counter table is provided on the platform, the counter table surrounding the platform in a radial direction of the outer cannula for reducing a contact area of an inner wall of the implant with an outer wall of the outer cannula.
10. The load delivery assembly for a prosthetic device of claim 1, wherein the opening of the U-shaped fork is aligned with the opening of the second through slot and the opening width of the U-shaped fork is greater than the opening width of the second through slot.
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| CN114271886A (en) * | 2021-12-27 | 2022-04-05 | 上海傲派医疗科技有限公司 | Belt loop titanium plate implantation device and implantation system |
| CN116098686A (en) * | 2023-01-12 | 2023-05-12 | 上海市浦东新区人民医院 | Automatic vagina cutting and suturing device |
| CN219271031U (en) * | 2023-02-15 | 2023-06-30 | 江苏唯德康医疗科技有限公司 | Hemostatic clamp assembly and hemostatic clamp applying same |
| CN117100341A (en) * | 2023-10-10 | 2023-11-24 | 上海声拓医疗科技有限公司 | Prosthetic device and method of use |
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