CN113440320B - Artificial ligament bionic fixed type femur distal tumor type half knee joint prosthesis - Google Patents
Artificial ligament bionic fixed type femur distal tumor type half knee joint prosthesis Download PDFInfo
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- CN113440320B CN113440320B CN202110764308.3A CN202110764308A CN113440320B CN 113440320 B CN113440320 B CN 113440320B CN 202110764308 A CN202110764308 A CN 202110764308A CN 113440320 B CN113440320 B CN 113440320B
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- 210000003041 ligament Anatomy 0.000 title claims abstract description 127
- 210000000689 upper leg Anatomy 0.000 title claims abstract description 34
- 206010028980 Neoplasm Diseases 0.000 title claims abstract description 25
- 210000000629 knee joint Anatomy 0.000 title claims abstract description 20
- 239000011664 nicotinic acid Substances 0.000 title claims abstract description 11
- 210000004439 collateral ligament Anatomy 0.000 claims abstract description 55
- 210000001264 anterior cruciate ligament Anatomy 0.000 claims abstract description 15
- 210000002967 posterior cruciate ligament Anatomy 0.000 claims abstract description 13
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 210000003127 knee Anatomy 0.000 claims description 12
- 230000003592 biomimetic effect Effects 0.000 claims description 11
- 230000006978 adaptation Effects 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 230000033001 locomotion Effects 0.000 abstract description 7
- 230000007704 transition Effects 0.000 abstract description 3
- 238000004804 winding Methods 0.000 abstract description 2
- 210000002745 epiphysis Anatomy 0.000 description 6
- 210000002303 tibia Anatomy 0.000 description 5
- 230000012010 growth Effects 0.000 description 3
- 238000001356 surgical procedure Methods 0.000 description 3
- 210000000988 bone and bone Anatomy 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 210000002414 leg Anatomy 0.000 description 2
- 201000008968 osteosarcoma Diseases 0.000 description 2
- 208000036487 Arthropathies Diseases 0.000 description 1
- 206010005949 Bone cancer Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008468 bone growth Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000013150 knee replacement Methods 0.000 description 1
- 208000030175 lameness Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 208000014192 neoplasm of femur Diseases 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000002271 resection Methods 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 238000013334 tissue model Methods 0.000 description 1
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- 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
- A61F2/50—Prostheses not implantable in the body
- A61F2/60—Artificial legs or feet or parts thereof
- A61F2/64—Knee joints
-
- 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
- A61F2/50—Prostheses not implantable in the body
- A61F2002/5016—Prostheses not implantable in the body adjustable
- A61F2002/5018—Prostheses not implantable in the body adjustable for adjusting angular orientation
-
- 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
- A61F2/50—Prostheses not implantable in the body
- A61F2002/5093—Tendon- or ligament-replacing cables
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- Health & Medical Sciences (AREA)
- Transplantation (AREA)
- Biomedical Technology (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Engineering & Computer Science (AREA)
- Orthopedic Medicine & Surgery (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 bionic fixed type femur far-end tumor type knee-joint prosthesis of an artificial ligament, which comprises a femur far-end prosthesis and an artificial ligament; the artificial ligament is divided into an anterior cruciate ligament, a posterior cruciate ligament, an inner collateral ligament and an outer collateral ligament, and the artificial ligament is fixed on the distal femoral prosthesis; two through holes are formed in the distal femoral prosthesis in a penetrating manner, the anterior cruciate ligament and the posterior cruciate ligament can pass through the through holes and are fixed on the distal femoral prosthesis respectively, and collateral ligament fixing structures are arranged on the inner side and the outer side of the distal femoral prosthesis respectively and used for fixing one end of an inner/outer collateral ligament on the distal femoral prosthesis; the collateral ligament fixed structure can rotate relative to the distal femur prosthesis. The invention can lead the distal femur prosthesis to rotate back and forth relative to the tibial plateau by reasonably fixing the ligament, and allows the knee joint to do flexion and extension movement; and when the knee joint is in flexion and extension movement, the medial/lateral collateral ligaments are kept still, so that the conditions of transition stretching and prosthesis winding after stretching are avoided.
Description
Technical Field
The invention relates to the field of artificial prosthesis replacement, in particular to an artificial ligament bionic fixed distal femur tumor type half knee joint prosthesis.
Background
The distal femur is the most common part of malignant bone tumors such as osteosarcoma, and surgical resection of the tumors can cause defect of the distal femur and accumulation of knee joints to cause knee joint dysfunction. Currently, hinged tumor-type knee replacements are the most common surgical reconstruction approaches. Osteosarcomas are most often found in young people under the age of 20 years, especially children, who have not yet healed or not fully healed epiphyses and still have their bones in a growing developmental stage. When the hinge type tumor knee joint prosthesis is used for cutting off the distal femur, part of the proximal tibia needs to be cut off together to place prosthesis parts, so that proximal tibia epiphysis is affected, the growth of the tibia is affected, the left leg and the right leg are unequal in length after a long time, walking lameness and the like are caused, and a prolonged revision surgery is needed in severe cases. The revision surgery will face the problems of multiple surgeries, high economic cost, large wound area of patients and the like.
Therefore, it is an important research topic to maximize the growth function and recover the flexion and extension function of the joint as much as possible after the distal biological reconstruction of the tumor femur and the operation of young patients.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides the artificial ligament bionic fixed type femur far-end tumor type half-knee joint prosthesis, which can be used for reconstructing the femur far end under the condition of keeping the lateral epiphysis of the tibia as much as possible and ensuring the growth and development of the tibia to the maximum extent, so that the flexion and extension functions are recovered as much as possible while the stability of the knee joint is ensured, and an operation opportunity is provided for secondary prosthesis replacement after the later epiphysis of a patient are healed.
In order to achieve the technical purpose, the invention adopts the technical scheme that:
an artificial ligament bionic fixed type femur distal tumor type half knee joint prosthesis comprises a femur distal prosthesis and an artificial ligament; the artificial ligament is divided into an anterior cruciate ligament, a posterior cruciate ligament, an inner collateral ligament and an outer collateral ligament, and the artificial ligament is fixed on the distal femoral prosthesis; two through holes are formed in the distal femoral prosthesis in a penetrating manner, the anterior cruciate ligament and the posterior cruciate ligament can pass through the through holes and are fixed on the distal femoral prosthesis respectively, and collateral ligament fixing structures are arranged on the inner side and the outer side of the distal femoral prosthesis respectively and used for fixing one end of an inner/outer collateral ligament on the distal femoral prosthesis; the collateral ligament fixed structure can rotate relative to the distal femur prosthesis.
Further, the collateral ligament fixed knot constructs including the fixed subassembly of lateral collateral ligament, the fixed subassembly of medial collateral ligament and pivot; the two sides of the distal femoral prosthesis are symmetrically provided with a circular outer groove and a circular inner groove, the distal femoral prosthesis is internally provided with a circular channel for connecting the outer groove and the inner groove, and the channel is superposed with the axes of the outer groove and the inner groove; the utility model discloses a pivot, including pivot, inboard recess, inboard accessory ligament fixed component, pivot one end, the fixed subassembly of outside accessory ligament is located the outside recess, the fixed subassembly of inboard accessory ligament is located the inboard recess, the pivot is located the passageway, the fixed subassembly of outside accessory ligament, the fixed subassembly of inboard accessory ligament rotationally connect at the pivot both ends, and pivot one end has the brim of a hat, and the nut is connected on the screw thread of the other end.
Preferably, the fixed subassembly of outside collateral branch ligament includes first ligament clamp plate, first ligament fixed disk, the pivot is connected in the step hole of first ligament fixed disk, first ligament clamp plate passes through the screw connection on first ligament fixed disk, and the contact surface at first ligament clamp plate and first ligament fixed disk is fixed to the outside collateral branch ligament.
Preferably, the fixed subassembly of inboard collateral ligament includes second ligament fixed disk, second ligament clamp plate, second ligament fixed disk passes through the step jogged joint in the pivot, and the nut is located the step hole, and second ligament clamp plate passes through the screw connection on second ligament fixed disk, and the contact surface at second ligament fixed disk and second ligament clamp plate is fixed to inboard collateral ligament.
Furthermore, the inner surface of the first/second ligament pressing plate is provided with a boss, the outer surface of the first/second ligament fixing plate is provided with a first groove matched with the boss, and the inner/outer collateral ligament is positioned in the first groove.
Preferably, the surface of the first groove is a rough surface, and the boss is provided with a saw-toothed protrusion.
Preferably, the first/second ligament pressing plate is provided with a through hole in the center through which the rotating shaft or the nut can pass.
Furthermore, the two through holes for the anterior cruciate ligament and the posterior cruciate ligament to pass through are provided with inlets positioned on the bottom surface of the distal femoral prosthesis and outlets positioned on the inner surface of the distal femoral prosthesis, a groove is arranged between the two outlets and a pressing block fixing groove crossed with the groove is formed, one end of the anterior cruciate ligament and one end of the posterior cruciate ligament are connected in the groove, a pressing boss matched with the groove is arranged on the ligament pressing block, and the ligament pressing block is fixed in the pressing block fixing groove of the distal femoral prosthesis through screws.
Preferably, the surface of the groove is rough, and the surface of the pressing boss is serrated.
Furthermore, the upper part of the distal femoral prosthesis is provided with an assembly section which is a cone frustum.
Compared with the prior art, the invention has the beneficial effects that:
1) the artificial ligament bionic fixed type femur far-end tumor type half-knee joint prosthesis can enable the femur far-end prosthesis to rotate back and forth relative to a tibial plateau through reasonably fixing the ligament, and allows the knee joint to do flexion and extension movement;
2) according to the invention, the collateral ligament fixing structures are arranged on the inner side and the outer side of the distal femoral prosthesis, and the collateral ligament fixing structures can rotate relative to the distal femoral prosthesis, so that when the knee joint is in flexion and extension movement, the distal femoral prosthesis rotates while the collateral ligament fixing structures are fixed, so that the medial/lateral collateral ligaments are kept fixed, and the situations that the medial/lateral collateral ligaments are stretched in a transition way and wound around the prosthesis after stretching are avoided;
3) the groove for placing the ligament and the first groove are rough in surface, and the surface of the boss for pressing the ligament is serrated, so that pressing force can be increased, and the stability of fixing the ligament is further improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 is a schematic structural diagram of an artificial ligament bionic fixed distal femoral tumor type knee prosthesis of the present invention;
FIG. 2 is a left side view of the prosthetic ligament biomimetic fixed distal femoral tumor-type knee prosthesis shown in FIG. 1;
FIG. 3 is a cross-sectional view A-A of the prosthetic artificial ligament biomimetic fixed distal femoral tumor-type knee prosthesis shown in FIG. 2;
FIG. 4 is a B-B cross-sectional view of the prosthetic ligament biomimetic fixed distal femoral tumor-type knee prosthesis shown in FIG. 2;
FIG. 5 is an enlarged fragmentary view within the wireframe of the cross-sectional view of FIG. 4;
FIG. 6 is a schematic structural view of a distal femoral prosthesis according to the present invention;
FIG. 7 is an exploded view of the collateral ligament fixation structure of the present invention;
FIG. 8 is a cross-sectional view A-A of another embodiment of the artificial ligament biomimetic fixed distal femoral tumor-type knee prosthesis of the present invention;
figure 9 is a side view of a ligament compact of the present invention;
reference numerals: 1-distal femoral prosthesis, 2-assembly section, 5-ligament pressing block, 51-pressing boss, 6-first ligament pressing plate, 6' -second ligament pressing plate, 7-first ligament fixing disc, 7' -second ligament fixing disc, 8-rotating shaft, 9-bolt, 11-through hole, 111-outlet, 112-inlet, 12-groove, 13-outer groove, 13' -inner groove, 14-channel, 15-pressing block fixing groove, 61-bulge, 62-through hole, 71-first groove, 72-step hole, 81-brim and 82-thread.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present application, it should be noted that the indication of orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which is usually placed when the product of the application is used, or the orientation or positional relationship which is usually understood by those skilled in the art, or the orientation or positional relationship which is usually placed when the product of the application is used, and is only for the convenience of describing the application and simplifying the description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, and may for example be fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The embodiment of the invention provides an artificial ligament bionic fixed type femur far-end tumor type half knee joint prosthesis, which comprises a femur far-end prosthesis 1 and artificial ligaments, wherein the artificial ligaments are divided into an anterior cruciate ligament, a posterior cruciate ligament, an inner collateral ligament and an outer collateral ligament, and the artificial ligaments are fixed on the femur far-end prosthesis 1. The upper part of the femur far-end prosthesis 1 is provided with an assembly section 2, the assembly section 2 is a cone frustum, the knee joint prosthesis device is designed into an assembly type, a conventional broach can be assembled, and the universality is high.
Furthermore, two through holes 11 are formed in the distal femoral prosthesis 1 in a penetrating manner, and are used for an anterior cruciate ligament and a posterior cruciate ligament to pass through and be fixed on the distal femoral prosthesis 1 respectively, and collateral ligament fixing structures are arranged on the inner side and the outer side of the distal femoral prosthesis respectively and are used for fixing one end of an inner/outer collateral ligament to the distal femoral prosthesis, and the collateral ligament fixing structures can rotate relative to the distal femoral prosthesis. The distal femoral prosthesis 1 can rotate back and forth relative to the tibial plateau under the restriction of the artificial ligament to allow flexion and extension movements of the knee joint.
An inlet 112 of the through hole 11 is positioned on the bottom surface of the distal femoral prosthesis 1, the outlets 111 are positioned on the inner surface of the distal femoral prosthesis, a groove 12 is arranged between the two outlets 111, a pressing block fixing groove 15 crossed with the groove 12 is formed, the anterior/posterior cruciate ligament penetrates through the through hole 11 and then one end of the anterior/posterior cruciate ligament is connected into the groove 12, a ligament pressing block 5 matched with the pressing block fixing groove 15 is further arranged, a pressing boss 51 matched with the groove 12 is arranged on the ligament pressing block 5, and the ligament pressing block 5 is fixed in the pressing block fixing groove 15 of the distal femoral prosthesis 1 through screws; the surface of the groove 12 is rough, and the surface of the pressing boss 51 is serrated, so that the anterior/posterior cruciate ligaments are pressed, and the stability of ligament fixation is increased.
Further, the collateral ligament fixing structure comprises a lateral collateral ligament fixing component, a medial collateral ligament fixing component and a rotating shaft 8; the two sides of the femur distal prosthesis 1 are symmetrically provided with a circular outer groove 13 and an inner groove 13', the femur distal prosthesis 1 is provided with a circular channel 14 connecting the outer groove 13 and the inner groove 13', and the channel 14 is superposed with the axes of the outer groove 13 and the inner groove 13 '; the outside collateral ligament fixed subassembly is located outside recess 13, the inside collateral ligament fixed subassembly is located inside recess 13', pivot 8 is located passageway 14, outside collateral ligament fixed subassembly, the fixed subassembly of inside collateral ligament are rotationally connected at pivot 8 both ends, and pivot 8 one end has the brim of a hat 81, and nut 9 is connected on the screw thread 82 of the other end.
Specifically, the lateral accessory ligament fixing component comprises a first ligament pressing plate 6 and a first ligament fixing disc 7, the rotating shaft 8 is connected in a stepped hole 72 of the first ligament fixing disc 7, the first ligament pressing plate 6 is connected on the first ligament fixing disc 7 through a screw, and the lateral accessory ligament is fixed on a contact surface between the first ligament pressing plate 6 and the first ligament fixing disc 7; the inner collateral ligament fixing component comprises a second ligament fixing disc 7' and a second ligament pressing plate 6', the second ligament fixing disc 7' is connected to the rotating shaft 8 through a stepped hole, the nut 9 is located in the stepped hole, the second ligament pressing plate 6' is connected to the second ligament fixing disc 7' through a screw, and the inner collateral ligament is fixed on a contact surface between the second ligament fixing disc 7' and the second ligament pressing plate 6 '.
Further, in order to fix the medial/lateral collateral ligament conveniently, the inner surface of the first/second ligament pressing plate is provided with a boss 61, the outer surface of the first/second ligament fixing disc is provided with a first groove 71 matched with the boss 61, and one end of the medial/lateral collateral ligament is positioned in the first groove 71 of the first/second ligament fixing disc; preferably, the surface of the first groove 71 is rough, and the boss 61 is provided with saw-tooth-shaped protrusions, so that the roughness of the boss surface is increased, the pressing force on the inner/outer collateral ligament is increased, and the ligament fixation stability is further improved.
As a variation of the above embodiment, the first/second ligament pressing plate has a through hole 62 formed at the center thereof for passing the rotating shaft 8 or the nut 9, so that the medial/lateral ligamentum can be fixed to the medial/lateral ligamentum fixing member and respectively placed in the medial groove 13 and the lateral groove 13', and then the rotating shaft 8 sequentially passes through the lateral ligamentum fixing member, the channel 14 and the medial ligamentum fixing member, and then is locked by the nut 9.
Because the collateral ligament fixed knot constructs and the distal femoral prosthesis keeps relatively independently, when distal femoral prosthesis rotates around the axis of rotation, be fixed in outside collateral ligament between first ligament clamp plate and the first ligament fixed plate and be fixed in the inboard collateral ligament between second ligament clamp plate and the second ligament fixed plate and keep motionless, can avoid inside/outside collateral ligament transition tensile and the phenomenon of winding the prosthesis after the tensile.
The arc-shaped joint surface of the distal femur prosthesis provided by the invention is adapted to the femur arc-shaped joint surface which is obtained by bone tissue modeling by adopting MINICS software and is inosculated with a patient, a tibial joint surface platform of the patient can be accurately matched, a tibial side platform surface, an epiphysis and surrounding tissues can be kept as far as possible, the bone growth function of a young patient can be ensured while the knee joint motion function is reconstructed, and the stability of joint motion is maintained.
The knee joint prosthesis device is designed to be in a combined mode, a conventional broach can be combined, universality is high, the broach can be replaced and combined in a secondary operation after epiphysis of a patient is closed, and the wound area of the patient in the secondary operation can be reduced.
The present invention is capable of other embodiments, and various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention.
Claims (9)
1. An artificial ligament bionic fixed type femur distal tumor type half knee joint prosthesis comprises a femur distal prosthesis (1) and an artificial ligament; the artificial ligament is divided into an anterior cruciate ligament, a posterior cruciate ligament, an inner collateral ligament and an outer collateral ligament, and the artificial ligament is fixed on the distal femoral prosthesis (1); the method is characterized in that: two through holes (11) are formed in the distal femoral prosthesis (1) in a penetrating manner, and are used for an anterior cruciate ligament and a posterior cruciate ligament to pass through and be fixed on the distal femoral prosthesis (1), and collateral ligament fixing structures are arranged on the inner side and the outer side of the distal femoral prosthesis (1) respectively and are used for fixing one end of an inner/outer collateral ligament on the distal femoral prosthesis (1); the collateral ligament fixing structure can rotate relative to the distal femur prosthesis (1);
the collateral ligament fixing structure comprises an external collateral ligament fixing component, an internal collateral ligament fixing component and a rotating shaft (8); circular outer side grooves (13) and inner side grooves (13') are symmetrically formed in two sides of the femur far-end prosthesis (1), circular channels (14) connected with the outer side grooves (13) and the inner side grooves (13') are formed in the femur far-end prosthesis (1), and the channels (14) are overlapped with the axes of the outer side grooves (13) and the inner side grooves (13 '); the fixed subassembly of outside collateral branch ligament is located outside recess (13), the fixed subassembly of inboard collateral branch ligament is located inboard recess (13'), pivot (8) are located passageway (14), the fixed subassembly of outside collateral branch ligament, the fixed subassembly of inboard collateral branch ligament are rotationally connected at pivot (8) both ends, and pivot (8) one end has brim of a hat (81), and nut (9) are connected on screw thread (82) of the other end.
2. The artificial ligament bionic fixed distal femoral tumor type knee-joint prosthesis according to claim 1, wherein: the fixed subassembly of outside collateral branch ligament includes first ligament clamp plate (6), first ligament fixed disk (7), pivot (8) are connected in step hole (72) of first ligament fixed disk (7), first ligament clamp plate (6) pass through the screw connection on first ligament fixed disk (7), and the contact surface at first ligament clamp plate (6) and first ligament fixed disk (7) is fixed to outside collateral branch ligament.
3. The artificial ligament biomimetic fixed distal femoral tumor-type knee prosthesis of claim 2, wherein: the inner collateral ligament fixing assembly comprises a second ligament fixing disc (7') and a second ligament pressing plate (6'), the second ligament fixing disc (7') is connected to the rotating shaft (8) through a step hole, the nut (9) is located in the step hole, the second ligament pressing plate (6') is connected to the second ligament fixing disc (7') through a screw, and the inner collateral ligament is fixed on a contact surface of the second ligament fixing disc (7') and the second ligament pressing plate (6 ').
4. The artificial ligament biomimetic fixed distal femoral tumor-type knee prosthesis of claim 3, wherein: the inner surface of the first/second ligament pressing plate is provided with a boss (61), the outer surface of the first/second ligament fixing plate is provided with a first groove (71) matched with the boss (61), and the inner/outer collateral ligament is located in the first groove (71).
5. The artificial ligament biomimetic fixed distal femoral tumor-type knee prosthesis of claim 4, wherein: the surface of the first groove (71) is a rough surface, and the boss (61) is provided with saw-toothed protrusions.
6. The artificial ligament biomimetic fixed distal femoral tumor-type knee prosthesis of claim 5, wherein: the center of the first/second ligament pressing plate is provided with a through hole (62) through which the rotating shaft (8) or the nut (9) can pass.
7. The artificial ligament biomimetic fixed distal femoral tumor-type knee prosthesis of claim 1, wherein: two through-holes (11) that confession anterior cruciate ligament and back cruciate ligament passed, entry (112) are located distal femur prosthesis (1) bottom surface, export (111) are at distal femur prosthesis (1) internal surface, it is equipped with recess (12) to open between two exports (111), and set up briquetting fixed slot (15) crossing with recess (12), the one end of anterior cruciate ligament and back cruciate ligament is connected in recess (12), ligament briquetting (5) are last have with recess (12) looks adaptation compress tightly boss (51), ligament briquetting (5) are through the fix with screw in briquetting fixed slot (15) of distal femur prosthesis (1).
8. The artificial ligament biomimetic fixed distal femoral tumor-type knee prosthesis of claim 7, wherein: the surface of the groove (12) is rough, and the surface of the pressing boss (51) is serrated.
9. The artificial ligament biomimetic fixed distal femoral tumor-type knee prosthesis according to any of claims 1-8, wherein: the upper part of the femur far-end prosthesis (1) is provided with an assembly section (2), and the assembly section (2) is a cone frustum.
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| CN202110764308.3A CN113440320B (en) | 2021-07-06 | 2021-07-06 | Artificial ligament bionic fixed type femur distal tumor type half knee joint prosthesis |
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| CN110731837A (en) * | 2019-09-19 | 2020-01-31 | 北京力达康科技有限公司 | ligament retention type tibia tumor assembly type half knee joint prosthesis |
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| AU653752B2 (en) * | 1990-09-25 | 1994-10-13 | Ethicon Inc. | Bone fastener |
| CN101278866B (en) * | 2008-03-18 | 2010-06-09 | 中国人民解放军第四军医大学 | Customized artificial semi-knee-joint and method of producing the same |
| US9132014B2 (en) * | 2010-04-13 | 2015-09-15 | Zimmer, Inc. | Anterior cruciate ligament substituting knee implants |
| CN202843854U (en) * | 2012-08-31 | 2013-04-03 | 北京纳通科技集团有限公司 | Tibia base component and knee-joint prosthesis |
| US8998996B2 (en) * | 2012-09-20 | 2015-04-07 | Depuy (Ireland) | Knee prosthesis system with standard and distal offset joint line |
| CN109662809B (en) * | 2019-01-23 | 2023-05-30 | 北京大学人民医院(北京大学第二临床医学院) | Bionic tumor type knee joint prosthesis |
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| CN110731837A (en) * | 2019-09-19 | 2020-01-31 | 北京力达康科技有限公司 | ligament retention type tibia tumor assembly type half knee joint prosthesis |
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| CN113440320A (en) | 2021-09-28 |
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