CN117100341A - Prosthetic device and method of use - Google Patents
Prosthetic device and method of use Download PDFInfo
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- CN117100341A CN117100341A CN202311311291.1A CN202311311291A CN117100341A CN 117100341 A CN117100341 A CN 117100341A CN 202311311291 A CN202311311291 A CN 202311311291A CN 117100341 A CN117100341 A CN 117100341A
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- outer sleeve
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- push rod
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- 238000000034 method Methods 0.000 title claims description 21
- 239000007943 implant Substances 0.000 claims abstract description 93
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 230000007246 mechanism Effects 0.000 claims description 25
- 230000008439 repair process Effects 0.000 claims description 12
- 230000009471 action Effects 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 3
- 210000001264 anterior cruciate ligament Anatomy 0.000 description 54
- 210000003041 ligament Anatomy 0.000 description 8
- 210000001519 tissue Anatomy 0.000 description 7
- 238000001356 surgical procedure Methods 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 210000000988 bone and bone Anatomy 0.000 description 3
- 238000009954 braiding Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000002513 implantation Methods 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 description 3
- 210000000689 upper leg Anatomy 0.000 description 3
- 206010003246 arthritis Diseases 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
- 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
- 230000008569 process Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003306 harvesting 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
- 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
- 210000002435 tendon 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 repairing device, which comprises a loading conveying assembly and a driving assembly; the loading and conveying assembly comprises an outer sleeve and an inner push rod, a first through groove is 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 the outer sleeve; the inner push rod is arranged in the outer sleeve in a penetrating way, and a second through groove is formed in the inner push rod; 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 driving assembly is pressed, the opening of the first through groove is smaller, the first boss is inserted into the second through groove, the U-shaped fork expands outwards to clamp the implant, and meanwhile, the outer sleeve 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 drive assembly removes the force applied to the outer sleeve and the inner push rod releases the implant. The repairing device can improve the operation experience of doctors, improve the working efficiency of the doctors and reduce the operation risk.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a repairing device and a using method thereof.
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 the 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.
Accordingly, there is a need for a new prosthetic device and method of use that addresses the above-identified problems of the prior art.
Disclosure of Invention
The invention aims to solve at least one defect in the prior art and provides a repairing device and a using method thereof.
To achieve the above object, the prosthetic device of the present invention includes a loading conveyor assembly and a drive assembly; the loading and conveying assembly comprises an outer sleeve and an inner push rod, a pair of first through grooves are axially formed in the pipe wall of the outer sleeve, openings are formed in the first through grooves at 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 by the driving assembly, 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 increased, the U-shaped fork is driven to expand outwards along the first through groove to clamp the implant, and meanwhile, the outer tube releases the clamp 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 ejected, the drive assembly removes pressure on the outer sleeve, causing the inner pushrod to release the grip on the implant.
The repairing device has the beneficial effects that:
when the outer tube wall of the outer tube at the first through groove is pressed by the driving assembly, 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 to clamp the implant, meanwhile, the outer tube releases the clamp 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, and the driving assembly removes the pressure exerted on the outer sleeve, so that the inner push rod releases the clamping of the implant, and the implant implantation is completed. Finally, according to the operation requirement, the suspension fixation of the femur end of the anterior cruciate ligament is finished by adopting a conventional treatment mode (such as a bone anchor or a titanium plate), so as to further realize the repair of the anterior cruciate ligament. The operation does not need to repeatedly carry out threading action on the anterior cruciate ligament in the operation, can effectively prevent the occurrence of ligament cut phenomenon, improves the operation experience of doctors, improves the working efficiency of the doctors and reduces the operation risk.
Further, the driving component is sleeved on the outer pipe wall of the outer pipe at the first through groove, when the driving component applies radial pressure to the outer pipe wall of the outer pipe, the opening of the first through groove is reduced, and when the driving component removes the pressure applied to the outer pipe, the opening of the first through groove is restored.
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 drive assembly includes sleeve and drive portion, drive portion with telescopic connection, first through groove department be equipped with the second boss on the outer tube wall of outer tube, the sleeve cover is located on the outer tube, and be located the second boss is kept away from one side of the front end of outer tube, drive portion drive the sleeve to when the front end of outer tube removes, make the second boss pressurized hold gradually in the sleeve drives make the opening in first through groove diminish.
Further, the driving part comprises a connecting rod, a left bracket, a right bracket, a left handle, a right handle, a long pin and a short pin, wherein the left bracket is connected with the left handle, and the right bracket is connected with the right handle; the short pin fixes the left handle and the right handle, and the left handle and the right handle rotate around the short pin; the long pin is used for fixing the left bracket and the right bracket, and the left bracket and the right bracket rotate around the long pin; the connecting rod comprises a first connecting rod and a second connecting rod, the first connecting rod is movably connected with the sleeve and the left bracket, and the second connecting rod is movably connected with the sleeve and the right bracket; when the left handle and the right handle move relatively under the action of external force, the left bracket and the right bracket are driven to push the connecting rod, and the sleeve is driven to move along the outer sleeve.
Further, a base is further arranged at the tail end of the outer sleeve outside the first through groove, and the base is fixedly connected with the long pin.
Further, the loading and conveying assembly further comprises a limiting mechanism, and the limiting mechanism is used for locking the distance that the inner push rod moves towards the front end of the outer sleeve under the force.
Further, the loading delivery assembly also includes a reset mechanism that drives the inner push rod back into the outer sleeve to reset when pressure on the outer sleeve is removed.
The invention also provides a using method of the repairing device, which uses the repairing device to repair the target object, and the method comprises the following 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.
Further, a limiting mechanism is arranged on the repairing device, and in the step S3, when the implant is pushed out of the outer sleeve by the inner push rod, the limiting mechanism locks the distance that the inner push rod moves towards the front end of the outer sleeve under the force of the force, so that the implant is sleeved on the target object.
Further, a reset mechanism is disposed on the repairing device, and before the repairing device is pulled out from the target object 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.
Drawings
FIG. 1 is a schematic view of the overall structure of a repair device according to an embodiment of the present invention;
FIG. 2 is a schematic view of the overall structure of a loading conveyor assembly according to an embodiment of the present invention;
FIG. 3 is an enlarged view of FIG. 2 at A;
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. 3;
FIG. 8 is a schematic diagram of the overall structure of a driving assembly according to an embodiment of the present invention;
FIG. 9 is a schematic view of the overall structure of an implant according to an embodiment of the present invention;
FIG. 10 is a graph showing the change in the inner diameter of an implant as it is transferred from an outer cannula to an inner pushrod according to an embodiment 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 prosthetic device comprising a loading delivery assembly and a drive assembly; the loading and conveying assembly comprises an outer sleeve and an inner push rod, a pair of first through grooves are axially formed in the pipe wall of the outer sleeve, openings are formed in the first through grooves at 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 by the driving assembly, 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 increased, the U-shaped fork is driven to expand outwards along the first through groove to clamp the implant, and meanwhile, the outer tube releases the clamp 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 ejected, the drive assembly removes pressure on the outer sleeve, causing the inner pushrod to release the grip on the implant.
The repairing device has the advantages that:
when the outer tube wall of the outer tube at the first through groove is pressed by the driving assembly, 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 to clamp the implant, meanwhile, the outer tube releases the clamp 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, and the driving assembly removes the pressure exerted on the outer sleeve, so that the inner push rod releases the clamping of the implant, and the implant implantation is completed. Finally, according to the operation requirement, the suspension fixation of the femur end of the anterior cruciate ligament is finished by adopting a conventional treatment mode (such as a bone anchor or a titanium plate), so as to further realize the repair of the anterior cruciate ligament. The operation does not need to repeatedly carry out threading action on the anterior cruciate ligament in the operation, can effectively prevent the occurrence of ligament cut phenomenon, improves the operation experience of doctors, improves the working efficiency of the doctors and reduces the operation risk.
Fig. 1 is a schematic diagram of the overall structure of a repairing device according to an embodiment of the present invention. Referring to fig. 1, 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. 2 is a schematic view of the overall structure of a loading conveyor assembly according to an embodiment of the present invention; fig. 3 is an enlarged view at a in fig. 2.
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.
In some embodiments, a base is further disposed on the tail end of the outer sleeve outside the first through groove, and the base is fixedly connected with the long pin.
Referring to fig. 1, 2 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. 2 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. 3 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.
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. 2, 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, 2 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. 2, 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.
Referring to fig. 2, 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.
Referring to fig. 3 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 so as to lock the position of the inner push rod 22 toward the outer sleeve front end 211.
In some embodiments, the loading delivery assembly further comprises a reset mechanism that drives the inner push rod back into the outer sleeve to reset when pressure on the outer sleeve is removed.
In some embodiments, the return mechanism is a push rod return spring.
Referring to fig. 2, 3, 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.
In some embodiments, the loading delivery assembly further comprises a limiting mechanism for locking the distance the inner push rod is forced to move toward the front end of the outer sleeve.
Fig. 7 is an exploded view of fig. 3. Referring to fig. 2, 3, 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 driving component is sleeved on the outer pipe wall of the outer pipe at the first through groove, when the driving component applies radial pressure to the outer pipe wall of the outer pipe, the opening of the first through groove is made smaller, and when the driving component removes the pressure applied to the outer pipe, the opening of the first through groove is restored.
In some embodiments, the driving assembly includes a sleeve and a driving part, the driving part is connected with the sleeve, a second boss is disposed on an outer pipe wall of the outer sleeve at the first through slot, the sleeve is sleeved on the outer sleeve and is located at one side of the second boss away from the front end of the outer sleeve, and when the driving part drives the sleeve to move towards the front end of the outer sleeve, the second boss is pressed and gradually accommodated in the sleeve to drive the opening of the first through slot to be smaller.
In some embodiments, the driving part comprises a connecting rod, a left bracket, a right bracket, a left handle, a right handle, a long pin and a short pin, wherein the left bracket is connected with the left handle, and the right bracket is connected with the right handle; the short pin fixes the left handle and the right handle, and the left handle and the right handle rotate around the short pin; the long pin is used for fixing the left bracket and the right bracket, and the left bracket and the right bracket rotate around the long pin; the connecting rod comprises a first connecting rod and a second connecting rod, the first connecting rod is movably connected with the sleeve and the left bracket, and the second connecting rod is movably connected with the sleeve and the right bracket; when the left handle and the right handle move relatively under the action of external force, the left bracket and the right bracket are driven to push the connecting rod, and the sleeve is driven to move along the outer sleeve.
Fig. 8 is a schematic diagram of the overall structure of a driving assembly according to an embodiment 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.
Fig. 9 is a schematic view of the overall structure of an implant according to an embodiment 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 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, 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.
The invention also provides a using method of the repairing device, which uses the repairing device to repair the target object, and the method comprises the following 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 showing the change in the inner diameter of an implant as it is transferred from an outer cannula to an inner pushrod according to an embodiment 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, the inside diameter of the net cover structure 11 is shown on the left side in FIG. 10, and the inside diameter of the net cover 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-hole 2211, so that the opening of the second through-hole 2211 is gradually enlarged, the U-shaped fork 221 gradually expands outwards along the first through-hole 214, the two fork teeth of the U-shaped fork 221 respectively expand outwards along the first through-hole 214 and extend out of the first through-hole 214, and when the two wedge-shaped bosses 2151 are completely inserted into the second through-hole Through groove 2211, U-shaped fork 221 stops expanding, and two fork teeth of U-shaped fork 221 completely extend out of pipe cavity 215 from first through groove 214 and abut against the inner wall of net sleeve structure 11, clamping net sleeve structure 11, net sleeve structure 11 is transferred from outer sleeve 21 to U-shaped fork 221 of inner push rod 22. Referring to FIG. 10, 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 (11)
1. A prosthetic device comprising a loading delivery assembly and a drive assembly;
the loading and conveying assembly 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 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 by the driving assembly, 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 increased, the U-shaped fork is driven to expand outwards along the first through groove to clamp the implant, and meanwhile, the outer tube releases the clamp 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 ejected, the drive assembly removes pressure on the outer sleeve, causing the inner pushrod to release the grip on the implant.
2. The prosthetic device of claim 1, wherein the drive assembly is sleeved on the outer tube wall of the outer tube at the first through slot, wherein the drive assembly applies radial pressure to the outer tube wall of the outer tube to reduce the opening of the first through slot, and wherein the drive assembly removes pressure applied to the outer tube to restore the opening of the first through slot.
3. The prosthetic device of claim 1, wherein said first boss comprises a pair of wedge-shaped bosses on a portion of the inner tube wall of said outer tube divided between said two first through-going grooves, said two wedge-shaped bosses being inserted into said second through-going grooves opposite to each other when the outer tube wall of said outer tube at said first through-going grooves is pressed, and stopping the opening of said second through-going grooves from becoming larger when fully inserted, and positioning said U-shaped fork.
4. The repairing device according to claim 2, wherein the driving assembly comprises a sleeve and a driving part, the driving part is connected with the sleeve, a second boss is arranged on the outer pipe wall of the outer sleeve at the first through groove, the sleeve is sleeved on the outer sleeve and is positioned at one side of the second boss away from the front end of the outer sleeve, and when the driving part drives the sleeve to move towards the front end of the outer sleeve, the second boss is gradually accommodated in the sleeve under pressure, so that the opening of the first through groove is reduced.
5. The prosthetic device of claim 4, wherein the drive section comprises a connecting rod, a left bracket, a right bracket, a left handle, a right handle, a long pin, and a short pin, the left bracket being connected to the left handle, the right bracket being connected to the right handle;
the short pin fixes the left handle and the right handle, and the left handle and the right handle rotate around the short pin;
the long pin is used for fixing the left bracket and the right bracket, and the left bracket and the right bracket rotate around the long pin;
the connecting rod comprises a first connecting rod and a second connecting rod, the first connecting rod is movably connected with the sleeve and the left bracket, and the second connecting rod is movably connected with the sleeve and the right bracket;
When the left handle and the right handle move relatively under the action of external force, the left bracket and the right bracket are driven to push the connecting rod, and the sleeve is driven to move along the outer sleeve.
6. The prosthetic device of claim 5, wherein a base is further disposed on the trailing end of the outer sleeve beyond the first through slot, the base being fixedly connected to the elongated pin.
7. The prosthetic device of claim 1, wherein the loading delivery assembly further comprises a stop mechanism for locking the distance the inner pushrod is forced toward the forward end of the outer sleeve.
8. The prosthetic device of claim 2, wherein the loading delivery assembly further comprises a reset mechanism that drives the inner pushrod back into the outer sleeve to reset when pressure on the outer sleeve is removed.
9. A method of using a prosthetic device according to any one of claims 1-8 to repair a target, the method 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 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.
10. The method according to claim 9, wherein a limiting mechanism is provided on the prosthetic device, and in the step S3, when the inner push rod pushes the implant out of the outer sleeve, the limiting mechanism locks a distance that the inner push rod moves towards the front end of the outer sleeve due to force, so that the implant is sleeved on the target object.
11. The method of claim 10, wherein a reset mechanism is provided on the repairing device, and before the repairing device is pulled away from the target in S4, the method further comprises 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.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117243654A (en) * | 2023-10-10 | 2023-12-19 | 上海声拓医疗科技有限公司 | Loading and delivery assembly for prosthetic devices |
| CN117243654B (en) * | 2023-10-10 | 2024-05-28 | 上海声拓医疗科技有限公司 | Loading and delivery assembly for prosthetic devices |
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| Publication number | Publication date |
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| CN117100341B (en) | 2024-05-28 |
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