CN117100466B - Tibia extension rod in knee joint renovation operation - Google Patents
Tibia extension rod in knee joint renovation operation Download PDFInfo
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- CN117100466B CN117100466B CN202311372779.5A CN202311372779A CN117100466B CN 117100466 B CN117100466 B CN 117100466B CN 202311372779 A CN202311372779 A CN 202311372779A CN 117100466 B CN117100466 B CN 117100466B
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- fixedly connected
- knee joint
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- extension rod
- nuts
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- 210000002303 tibia Anatomy 0.000 title claims abstract description 26
- 210000000629 knee joint Anatomy 0.000 title claims abstract description 17
- 238000009418 renovation Methods 0.000 title abstract description 6
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 31
- 230000005540 biological transmission Effects 0.000 claims description 10
- 230000000712 assembly Effects 0.000 claims description 9
- 238000000429 assembly Methods 0.000 claims description 9
- 230000007246 mechanism Effects 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 6
- 239000004698 Polyethylene Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- -1 polyethylene Polymers 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- 238000009419 refurbishment Methods 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims 1
- 230000009471 action Effects 0.000 abstract description 5
- 238000009434 installation Methods 0.000 description 3
- 210000004439 collateral ligament Anatomy 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 210000000281 joint capsule Anatomy 0.000 description 2
- 210000003141 lower extremity Anatomy 0.000 description 2
- 201000008482 osteoarthritis Diseases 0.000 description 2
- 206010039073 rheumatoid arthritis Diseases 0.000 description 2
- 210000000689 upper leg Anatomy 0.000 description 2
- 206010058314 Dysplasia Diseases 0.000 description 1
- 206010062575 Muscle contracture Diseases 0.000 description 1
- 206010061363 Skeletal injury Diseases 0.000 description 1
- 208000026137 Soft tissue injury Diseases 0.000 description 1
- 241001227561 Valgus Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 208000006111 contracture Diseases 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 210000002745 epiphysis Anatomy 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/38—Joints for elbows or knees
- A61F2/389—Tibial components
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30405—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by screwing complementary threads machined on the parts themselves
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Physical Education & Sports Medicine (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
The invention discloses a tibia extension rod in knee joint renovation operation, which belongs to the technical field of medical prosthesis and comprises the following components: a tibial plateau; the cushion block is arranged on the tibia platform; the connecting part is arranged at the bottom of the tibia platform and provided with a mounting groove; the connecting cylinder is fixedly connected to the bottom of the connecting part; the extension rod main body is arranged at the bottom of the tibia platform, the first transverse plate and the connecting seat are driven to move through the threaded cooperation of the bidirectional screw rod and the nut, and the first transverse plate and the positioning block are driven to move inwards through the movement of the connecting seat, so that the positioning block is conveniently inserted into the positioning hole, the inserting plate is conveniently fixed through the clamping connection of the positioning block and the positioning hole, the inserting rod and the extension rod main body are conveniently installed and fixed, and then the first transverse plate is further fixed through the elastic action of the spring, so that the stability of fixing the inserting plate is further optimized.
Description
Technical Field
The invention relates to the technical field of medical prostheses, in particular to a tibia extension rod in knee joint renovation operation.
Background
Serious knee valgus deformity is liable to occur with long-term Osteoarthritis (OA) and rheumatoid arthritis (Rheumatoid Arthritis, RA), and can cause bone injury and soft tissue injury, such as contracture of external structures such as femoral external condyle posterolateral bone defect, external condyle dysplasia, tibial internal rotation, external collateral ligament, iliotibial tract, posterolateral joint capsule, etc., or relaxation of external collateral ligament, joint capsule, etc.
In the prior art, a part of patent documents with knee joint prosthesis are disclosed, and Chinese patent with the application number of CN202011202824. X discloses that the double-acting knee joint prosthesis consists of a double-acting half-knee joint femoral prosthesis and a tibia straight/eccentric extension rod, and the double-acting half-knee joint femoral prosthesis can meet the needs of different patients by adjusting the insertion length of a femoral intramedullary nail. The extension rod in the tibia straight/eccentric extension rod has rotary scalability, and the length of the extension rod can be reasonably adjusted according to the diameter of a patient's medullary cavity and the length of a reserved tibia, so that the effects of high filling rate and perfect tibia femur angle are achieved. The double-acting design can effectively reduce the friction frequency between the prosthesis and the tibia, ensure the growth capacity of the tibial epiphysis, reduce the abrasion of the tibial plateau and effectively ensure the consistent length of the two lower limbs of the patient. The extension rod has the functions of effectively supplementing stability and supporting the tibial plateau, and has the maximum constraint force on the movement of the tibia and the femur. The extension rod can be adjusted in a telescopic way according to the illness state of the patient during the secondary operation, so that the length of the two lower limbs of the patient is consistent, the loosening of the prosthesis is reduced, the deep infection is inhibited, and the repairing probability of all the prostheses is reduced.
In the above patent, the tibia extension rod is mounted on the tibia coupling component by screw-thread fit, the mounting mode is simple, but is easy to loosen, so we propose the tibia extension rod in the knee joint renovation operation.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide the tibia extension rod in knee joint renovation operation, the first transverse plate and the connecting seat are driven to move through the threaded matching of the bidirectional screw rod and the nut, and the first transverse plate and the positioning block are driven to move inwards through the movement of the connecting seat, so that the positioning block is conveniently inserted into the positioning hole, the inserting plate is conveniently fixed through the clamping connection of the positioning block and the positioning hole, the inserting rod and the extension rod main body are conveniently installed and fixed, and then the first transverse plate is further fixed through the elastic action of the spring, so that the stability of the fixing of the inserting plate is further optimized.
2. Technical proposal
In order to solve the problems, the invention adopts the following technical scheme:
a tibial extension pole in a knee joint refurbishment procedure, comprising:
a tibial plateau;
the cushion block is arranged on the tibia platform;
the connecting part is arranged at the bottom of the tibia platform and provided with a mounting groove;
the connecting cylinder is fixedly connected to the bottom of the connecting part;
the extension rod main body is arranged at the bottom of the tibia platform, the extension rod main body is fixedly connected with an inserting rod, the inserting rod is movably inserted into the connecting cylinder, the inserting rod is fixedly connected with an inserting plate, and two positioning holes are formed in the inserting plate;
the mounting mechanism is arranged in the connecting part and is connected with the two positioning holes.
As a preferable scheme of the invention, the mounting mechanism comprises a sleeve, a moving assembly and two groups of clamping assemblies, wherein the sleeve is fixedly connected in the mounting groove and is clamped with the plugboard, the moving assembly and the two groups of clamping assemblies are arranged in the connecting part, and the moving assembly is connected with the two groups of clamping assemblies.
As a preferable scheme of the invention, the moving assembly comprises two first bearing seats, two bidirectional screws, nuts, belt pulleys and driving belts, wherein the two first bearing seats, the two bidirectional screws, the nuts and the belt pulleys are respectively and fixedly connected to the front side and the rear side of the sleeve, the two bidirectional screws are respectively and rotatably connected to the two first bearing seats, the two sets of nuts are respectively and rotatably connected to the surfaces of the two bidirectional screws, the two belt pulleys are respectively and fixedly connected to the surfaces of the two bidirectional screws, the driving belts are sleeved on the surfaces of the two belt pulleys, and the driving belts are in driving connection with the two belt pulleys.
As a preferable scheme of the invention, each group of clamping assembly comprises a first transverse plate, two connecting seats and two positioning blocks, wherein the two connecting seats and the two positioning blocks are respectively and fixedly connected to the surfaces of two nuts, the first transverse plate is fixedly connected between the two connecting seats, the two positioning blocks are fixedly connected to the side ends of the first transverse plate, the two positioning blocks movably penetrate through the sleeve, and the two positioning blocks are movably inserted into the two positioning holes.
As a preferable scheme of the invention, two groups of second bearing plates are arranged on the surfaces of the two bidirectional screws, a second transverse plate is fixedly connected between each group of second bearing plates, a group of springs are fixedly connected to the side ends of the two second transverse plates, and the other ends of the two groups of springs are respectively and fixedly connected to the two first transverse plates.
As a preferable scheme of the invention, the side ends of the two first transverse plates are fixedly connected with a group of guide rods, the two second transverse plates are provided with a group of guide holes, and the two groups of guide holes are in sliding fit with the two groups of guide rods.
As a preferable scheme of the invention, the side end of the bidirectional screw is fixedly connected with a rotary table, and the rotary table movably penetrates through the connecting part.
As a preferable scheme of the invention, the side end of the turntable is fixedly connected with a cross block.
As a preferred embodiment of the present invention, each set of the nut, the guide rod, the guide hole and the spring is provided in four.
As a preferred embodiment of the present invention, the pad is made of high molecular polyethylene.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) This scheme is when needs installation extension rod main part, hold the extension rod main part, insert the inserted bar in the connecting cylinder, when the inserted bar inserts in the connecting cylinder, the picture peg just in time inserts in the sleeve, rotate the cross piece through the spanner this moment, drive carousel and bi-directional screw rotation through the rotation of cross piece, the rotation of bi-directional screw drives another bi-directional screw through the transmission cooperation of belt pulley and conveyer belt and rotates, two bi-directional screw simultaneously rotate this moment, drive two nuts at the surface inboard or outside removal of bi-directional screw simultaneously through the rotation of bi-directional screw, when bi-directional screw reverses, two nuts are moved to the inboard simultaneously, drive the connecting seat to the inboard removal through the removal of nut, drive first diaphragm and locating piece to the inboard removal through the removal of connecting seat, thereby be convenient for insert the locating piece in the locating hole, the joint through locating piece and locating hole is fixed with the picture peg, thereby be convenient for install the inserted bar and extension rod main part fixedly.
(2) In this scheme, when the locating piece moved to the outside, the spring was compressed, and the elasticity effect through the spring is further fixed first diaphragm to the stability of locating piece and locating hole joint has been further optimized.
(3) In this scheme, the seting up of guiding hole is in order to be convenient for with guide bar sliding fit, is convenient for spacing to the spring through the sliding fit of guide bar and guiding hole, prevents the longitudinal deformation of spring, plays the guard action to the spring.
Drawings
FIG. 1 is a front perspective view of the present invention;
FIG. 2 is a bottom perspective view of the present invention;
FIG. 3 is a front cross-sectional view of the present invention;
FIG. 4 is an overall exploded view of the present invention;
FIG. 5 is a front view of the mounting mechanism of the present invention;
FIG. 6 is a side view of the mounting mechanism of the present invention;
fig. 7 is an exploded view of the mounting mechanism of the present invention.
The reference numerals in the figures illustrate:
1. a tibial plateau; 2. a cushion block; 3. a connection part; 4. a mounting groove; 5. a connecting cylinder; 6. an extension rod body; 7. a rod; 8. inserting plate; 9. positioning holes; 10. a sleeve; 11. a first bearing seat; 12. a bidirectional screw; 13. a turntable; 14. a cross block; 15. a nut; 16. a first cross plate; 17. a connecting seat; 18. a positioning block; 19. a guide rod; 20. a second cross plate; 21. a guide hole; 22. a spring; 23. a second bearing seat; 24. a belt pulley; 25. a driving belt.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without making creative efforts based on the embodiments in the present invention are within the protection scope of the present invention.
Examples:
referring to fig. 1-7, a tibial extension pole for use in a knee joint reconstruction procedure, comprising:
a tibial plateau 1;
the cushion block 2 is arranged on the tibia platform 1;
the connecting part 3, the connecting part 3 is arranged at the bottom of the tibia platform 1, and the connecting part 3 is provided with a mounting groove 4;
the connecting cylinder 5 is fixedly connected to the bottom of the connecting part 3;
extension pole main part 6, extension pole main part 6 set up in the bottom of tibia platform 1, fixedly connected with inserted bar 7 on the extension pole main part 6, and inserted bar 7 activity is pegged graft in connecting cylinder 5, fixedly connected with picture peg 8 on the inserted bar 7, has seted up two locating holes 9 on the picture peg 8.
In this embodiment, the spacer block 2 is used for being combined with the tibial plateau 1 conveniently, the connecting part 3 is used for fixing the connecting barrel 5 conveniently, the mounting groove 4 is formed for being convenient for setting the mounting mechanism, the connecting barrel 5 is used for being spliced with the inserting rod 7 conveniently, the inserting rod 7 is used for fixing the inserting plate 8 conveniently, the positioning hole 9 is formed for being clamped with the positioning block 18 conveniently, the first transverse plate 16 and the connecting seat 17 are driven to move by the threaded fit of the bidirectional screw rod 12 and the nut 15, the first transverse plate 16 and the positioning block 18 are driven to move inwards by the movement of the connecting seat 17 so as to facilitate the insertion of the positioning block 18 into the positioning hole 9, the inserting plate 8 is fixed by the clamping connection of the positioning block 18 and the positioning hole 9 so as to facilitate the mounting and fixing of the inserting rod 7 and the extending rod main body 6, and then the first transverse plate 16 is further fixed by the elastic action of the spring 22, so that the stability of the fixing of the inserting plate 8 is further optimized.
Specifically, the installation mechanism comprises a sleeve 10, a moving assembly and two groups of clamping assemblies, wherein the sleeve 10 is fixedly connected in the installation groove 4, the sleeve 10 is clamped with the plugboard 8, the moving assembly and the two groups of clamping assemblies are arranged in the connecting part 3, and the moving assembly is connected with the two groups of clamping assemblies.
In this embodiment, the sleeve 10 is fixed to facilitate the plugging with the plug board 8, and the moving component and the two sets of clamping components are both disposed in the connecting portion 3, and the moving component and the two sets of clamping components are connected.
Specifically, the moving assembly includes two first bearing seats 11, two bidirectional screw rods 12, nuts 15, belt pulleys 24 and a driving belt 25, the two first bearing seats 11, the two bidirectional screw rods 12, the nuts 15 and the belt pulleys 24 are respectively and fixedly connected to the front side and the rear side of the sleeve 10, the two bidirectional screw rods 12 are respectively and rotatably connected to the two first bearing seats 11, the nuts 15 are arranged into two groups, the two groups of nuts 15 are respectively and threadedly connected to the surfaces of the two bidirectional screw rods 12, the two belt pulleys 24 are respectively and fixedly connected to the surfaces of the two bidirectional screw rods 12, the driving belt 25 is sleeved on the surfaces of the two belt pulleys 24, and the driving belt 25 is in transmission connection with the two belt pulleys 24.
In this embodiment, the first bearing seat 11 is used to facilitate the rotation of the bi-directional screw 12, the rotation of the bi-directional screw 12 drives the other bi-directional screw 12 to rotate through the transmission cooperation of the belt pulley 24 and the transmission belt 25, at this time, the two bi-directional screws 12 simultaneously rotate, the two nuts 15 are simultaneously driven to move inwards or outwards on the surface of the bi-directional screw 12 through the rotation of the bi-directional screw 12, and when the bi-directional screw 12 is reversed, the two nuts 15 simultaneously move inwards, and the connecting seat 17 is driven to move inwards through the movement of the nuts 15.
Specifically, each group of clamping components comprises a first transverse plate 16, a connecting seat 17 and a positioning block 18, the two connecting seats 17 and the two positioning blocks 18 are arranged, the two connecting seats 17 are respectively and fixedly connected to the surfaces of the two nuts 15, the first transverse plate 16 is fixedly connected between the two connecting seats 17, the two positioning blocks 18 are fixedly connected to the side ends of the first transverse plate 16, the two positioning blocks 18 movably penetrate through the sleeve 10, and the two positioning blocks 18 are movably inserted into the two positioning holes 9.
In this embodiment, the connecting seat 17 is driven to move inwards by the movement of the nut 15, and the first transverse plate 16 and the positioning block 18 are driven to move inwards by the movement of the connecting seat 17, so that the positioning block 18 is conveniently inserted into the positioning hole 9, and the plugboard 8 is conveniently fixed by the clamping connection of the positioning block 18 and the positioning hole 9, so that the plugboard 7 and the extension rod main body 6 are conveniently installed and fixed.
Specifically, two groups of second bearing seats 23 are installed on the surfaces of the two bidirectional screws 12, a second transverse plate 20 is fixedly connected between each group of second bearing seats 23, a group of springs 22 is fixedly connected to the side ends of the two second transverse plates 20, and the other ends of the two groups of springs 22 are respectively and fixedly connected to the two first transverse plates 16.
In the present embodiment, the second bearing 23 is used to facilitate fixing of the second transverse plate 20, and the second transverse plate 20 is used to facilitate fixing of the spring 22, and the first transverse plate 16 is fixed by the elastic action of the spring 22.
Specifically, a set of guide rods 19 are fixedly connected to the side ends of the two first transverse plates 16, a set of guide holes 21 are formed in the two second transverse plates 20, and the two sets of guide holes 21 are in sliding fit with the two sets of guide rods 19.
In this embodiment, the guide hole 21 is formed to be in sliding fit with the guide rod 19, so that the spring 22 is conveniently limited by sliding fit between the guide rod 19 and the guide hole 21, and the spring 22 is prevented from being deformed longitudinally, so that the spring 22 is protected.
Specifically, the side end of the bidirectional screw 12 is fixedly connected with a turntable 13, and the turntable 13 movably penetrates through the connecting portion 3.
In this embodiment, the rotation of the turntable 13 drives one of the two-way screws 12 to rotate.
Specifically, the side end of the turntable 13 is fixedly connected with a cross block 14.
In this embodiment, the cross piece 14 is rotated by a wrench, and the turntable 13 is driven to rotate by the rotation of the cross piece 14.
Specifically, four sets of nuts 15, guide rods 19, guide holes 21, and springs 22 are provided.
In the present embodiment, four sets of the nuts 15, the guide rods 19, the guide holes 21, and the springs 22 are provided.
Specifically, the cushion block 2 is made of high molecular polyethylene.
In this embodiment, the pad 2 is made of high molecular polyethylene.
Working principle: when the extension rod main body 6 needs to be installed, the extension rod main body 6 is held by the hand, the inserting rod 7 is inserted into the connecting cylinder 5, when the inserting rod 7 is inserted into the connecting cylinder 5, the inserting plate 8 is just inserted into the sleeve 10, the cross block 14 is rotated through the spanner, the rotating disc 13 and the bidirectional screw rod 12 are driven to rotate through the rotation of the cross block 14, the rotation of the bidirectional screw rod 12 drives the other bidirectional screw rod 12 to rotate through the transmission fit of the belt pulley 24 and the transmission belt 25, at the moment, the two bidirectional screw rods 12 simultaneously rotate, the two nuts 15 are simultaneously driven to move inwards or outwards on the surface of the bidirectional screw rod 12 through the rotation of the bidirectional screw rod 12, when the bidirectional screw rod 12 is reversed, the two nuts 15 simultaneously move inwards, the connecting seat 17 is driven to move inwards through the movement of the connecting seat 17, the first transverse plate 16 and the positioning block 18 are driven to move inwards through the movement of the connecting seat 17, so that the positioning block 18 is conveniently inserted into the positioning hole 9, the inserting plate 8 is conveniently fixed through the clamping connection of the positioning block 18 and the positioning hole 9, and the inserting rod 7 and the extension rod main body 6 are conveniently installed and fixed.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical solution and the modified concept thereof, within the scope of the present invention.
Claims (8)
1. A tibial extension bar in a knee joint refurbishment procedure, comprising:
a tibial plateau (1);
the cushion block (2) is arranged on the tibia platform (1);
the connecting part (3), the connecting part (3) is arranged at the bottom of the tibia platform (1), and the connecting part (3) is provided with a mounting groove (4);
the connecting cylinder (5), the said connecting cylinder (5) is fixedly connected to the bottom of the connecting portion (3);
the extension rod main body (6), extension rod main body (6) sets up in the bottom of tibia platform (1), fixedly connected with inserted bar (7) on extension rod main body (6), inserted bar (7) activity grafting is in connecting cylinder (5), fixedly connected with picture peg (8) on inserted bar (7), two locating holes (9) have been seted up on picture peg (8);
the mounting mechanism is arranged in the connecting part (3) and is connected with the two positioning holes (9);
the mounting mechanism comprises a sleeve (10), a moving assembly and two groups of clamping assemblies, wherein the sleeve (10) is fixedly connected in the mounting groove (4), the sleeve (10) is clamped with the plugboard (8), the moving assembly and the two groups of clamping assemblies are arranged in the connecting part (3), and the moving assembly is connected with the two groups of clamping assemblies;
the movable assembly comprises a first bearing seat (11), two bidirectional screw rods (12), nuts (15), belt pulleys (24) and a transmission belt (25), wherein the first bearing seat (11), the bidirectional screw rods (12), the nuts (15) and the belt pulleys (24) are all arranged in two, the first bearing seat (11) is fixedly connected to the front side and the rear side of a sleeve (10) respectively, the two bidirectional screw rods (12) are respectively connected in the two first bearing seats (11) in a rotating mode, the nuts (15) are arranged in two groups, the two groups of nuts (15) are respectively connected to the surfaces of the two bidirectional screw rods (12) in a threaded mode, the two belt pulleys (24) are respectively fixedly connected to the surfaces of the two bidirectional screw rods (12), the transmission belt (25) is sleeved on the surfaces of the two belt pulleys (24), and the transmission belt (25) is in transmission connection with the two belt pulleys (24).
2. The knee joint reconstruction intraoperative tibial extension pole of claim 1 wherein: every group joint subassembly all includes first diaphragm (16), connecting seat (17) and locating piece (18) set up to two, two connecting seat (17) are fixed connection respectively in the surface of two nuts (15), first diaphragm (16) fixed connection is between two connecting seat (17), two locating piece (18) are all fixed connection in the side of first diaphragm (16), two locating piece (18) are all movable run through sleeve (10), and two locating piece (18) activity are pegged graft in two locating holes (9).
3. The tibial extension pole of claim 2 wherein: two surface mounting of two bi-directional screw rods (12) have two sets of second bearings (23), every group the equal fixedly connected with second diaphragm (20) between second bearings (23), two the side of second diaphragm (20) all fixedly connected with a set of spring (22), two sets of the other end of spring (22) is fixed connection respectively on two first diaphragms (16).
4. A tibial extension pole in a knee joint reconstruction procedure as defined in claim 3, wherein: the side ends of the two first transverse plates (16) are fixedly connected with a group of guide rods (19), the two second transverse plates (20) are provided with a group of guide holes (21), and the two groups of guide holes (21) are in sliding fit with the two groups of guide rods (19).
5. The knee joint reconstruction intraoperative tibial extension pole of claim 4 wherein: the side end of the bidirectional screw rod (12) is fixedly connected with a rotary table (13), and the rotary table (13) movably penetrates through the connecting part (3).
6. The knee joint reconstruction intraoperative tibial extension pole of claim 5 wherein: the side end of the rotary table (13) is fixedly connected with a cross block (14).
7. The knee joint reconstruction intraoperative tibial extension pole of claim 6 wherein: each group of the nut (15), the guide rod (19), the guide hole (21) and the spring (22) is four.
8. The knee joint reconstruction intraoperative tibial extension pole of claim 7 wherein: the cushion block (2) is made of high polymer polyethylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311372779.5A CN117100466B (en) | 2023-10-20 | 2023-10-20 | Tibia extension rod in knee joint renovation operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311372779.5A CN117100466B (en) | 2023-10-20 | 2023-10-20 | Tibia extension rod in knee joint renovation operation |
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| Publication Number | Publication Date |
|---|---|
| CN117100466A CN117100466A (en) | 2023-11-24 |
| CN117100466B true CN117100466B (en) | 2023-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311372779.5A Active CN117100466B (en) | 2023-10-20 | 2023-10-20 | Tibia extension rod in knee joint renovation operation |
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| CN (1) | CN117100466B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105105887A (en) * | 2015-08-11 | 2015-12-02 | 嘉思特华剑医疗器材(天津)有限公司 | Tibial prosthesis building system suitable for different types of tibial malformations and defects |
| CN109276354A (en) * | 2017-07-20 | 2019-01-29 | 嘉思特华剑医疗器材(天津)有限公司 | Rotatable shaft is to restricted type hinge knee components |
| CN110916854A (en) * | 2019-12-31 | 2020-03-27 | 北京爱康宜诚医疗器材有限公司 | Knee joint prosthesis |
| CN214484742U (en) * | 2020-12-25 | 2021-10-26 | 西安交通大学医学院第二附属医院 | Tibia straight/eccentric extension rod |
| CN214761632U (en) * | 2020-12-25 | 2021-11-19 | 西安交通大学医学院第二附属医院 | Double-acting half-knee joint prosthesis |
| CN216908264U (en) * | 2021-01-20 | 2022-07-08 | 北京积水潭医院 | Elbow joint prosthesis |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2876276B1 (en) * | 2004-10-07 | 2007-11-02 | Dedienne Sante Soc Par Actions | TOTAL KNEE PROSTHESIS AND RANGE OF ELEMENTS FOR CONSTITUTING THIS PROSTHESIS |
| US20060195196A1 (en) * | 2005-02-26 | 2006-08-31 | Zimmer Technology, Inc. | Modular tibial implant with a mortise coupling |
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2023
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| CN105105887A (en) * | 2015-08-11 | 2015-12-02 | 嘉思特华剑医疗器材(天津)有限公司 | Tibial prosthesis building system suitable for different types of tibial malformations and defects |
| CN109276354A (en) * | 2017-07-20 | 2019-01-29 | 嘉思特华剑医疗器材(天津)有限公司 | Rotatable shaft is to restricted type hinge knee components |
| CN110916854A (en) * | 2019-12-31 | 2020-03-27 | 北京爱康宜诚医疗器材有限公司 | Knee joint prosthesis |
| CN214484742U (en) * | 2020-12-25 | 2021-10-26 | 西安交通大学医学院第二附属医院 | Tibia straight/eccentric extension rod |
| CN214761632U (en) * | 2020-12-25 | 2021-11-19 | 西安交通大学医学院第二附属医院 | Double-acting half-knee joint prosthesis |
| CN216908264U (en) * | 2021-01-20 | 2022-07-08 | 北京积水潭医院 | Elbow joint prosthesis |
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