CN110664519A - Knee joint prosthesis - Google Patents
Knee joint prosthesis Download PDFInfo
- Publication number
- CN110664519A CN110664519A CN201910951459.2A CN201910951459A CN110664519A CN 110664519 A CN110664519 A CN 110664519A CN 201910951459 A CN201910951459 A CN 201910951459A CN 110664519 A CN110664519 A CN 110664519A
- Authority
- CN
- China
- Prior art keywords
- knee joint
- joint prosthesis
- tibial plateau
- femoral condyle
- pad
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
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
- A61F2/3859—Femoral 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
- A61F2/38—Joints for elbows or knees
- A61F2/389—Tibial components
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 belongs to the technical field of artificial bones, and particularly relates to a knee joint prosthesis. The invention provides a knee joint prosthesis comprising: the femoral condyle comprises a femoral condyle, a tibial platform pad and a tibial platform support, wherein the rising angle of the front wing of the femoral condyle is 7 degrees. According to the invention, the raised angle of the front wing of the femoral condyle can be flexibly selected from a small size femur during implantation, so that the implantation is more convenient, and the implanted knee joint prosthesis is prevented from being embedded into the anterior cortical bone on the condyle; the knee joint prosthesis has the advantages of simple structure, convenient installation and good stability, ensures the perfect matching of the platform pad and the platform support and the convenient installation of the platform pad during operation, and also ensures the matching degree of the platform support and the shin bone osteotomy bone surface covering, thereby ensuring the stability and firmness of the implanted prosthesis and effectively reducing the abrasion so as to be beneficial to prolonging the service life of the knee joint prosthesis. The technical defects of complex structure, unchanged installation, low bending degree and poor stability of the implanted knee joint prosthesis existing in the implantation of the knee joint prosthesis in the prior art are solved.
Description
Technical Field
The invention belongs to the technical field of artificial bones, and particularly relates to a knee joint prosthesis.
Background
The knee joint is the largest, complex anatomical joint with high requirements for motion function, knee osteoarthritis and rheumatoid arthritis are the most common arthritis of the knee joint, and in the later stage of arthritis, serious joint deformity and movement disorder occur, and at the moment, the total knee joint surface replacement therapy is needed. The artificial total knee joint replacement can relieve joint pain, correct joint deformity and recover joint mobility, is the first choice method for treating knee joint diseases at present, can effectively relieve the knee joint pain after the operation, and can meet the requirement of a patient on pain relief.
An artificial total knee joint replacement surgery is an artificial joint replacement surgery, which refers to a treatment method for removing a joint surface which can not be repaired by self, replacing a damaged joint with an artificial joint component, correcting limb force lines, eliminating knee joint pain, maintaining joint stability and recovering the function of the knee joint. In recent years, knee joint replacement has been developed rapidly, solving some of the previously difficult technical problems. Total knee resurfacing surgery not only can significantly alleviate symptoms, but also can correct deformities and improve joint function. However, in the prior art, the implantation of the knee joint prosthesis has the technical defects of complex structure, unchanged installation, low bending degree and poor stability of the implanted knee joint prosthesis, and the application of the knee joint prosthesis is limited.
Therefore, the development of a knee joint prosthesis for solving the technical defects of complex structure, unchanged installation, low bending degree and poor stability of the implanted knee joint prosthesis existing in the implantation of the knee joint prosthesis in the prior art becomes a problem to be solved by those skilled in the art.
Disclosure of Invention
In view of this, the invention provides a knee joint prosthesis, which is used for solving the technical defects in the prior art that the implantation of the knee joint prosthesis has a complex structure and is not changed in installation, and the implanted knee joint prosthesis has low bending degree and poor stability.
The invention provides a knee joint prosthesis comprising: the femur condyle and the tibia platform support are connected through the tibia platform support, the other end of the tibia platform support is inserted into bone marrow, and a femur bone marrow inner stem of the femur condyle is inserted into the bone marrow; the rising angle of the front wing of the femoral condyle is 7 degrees.
Preferably, the outer end surface of the femoral condyle is a rotational arc surface.
Preferably, the outer radian of the connecting end of the femoral condyle and the tibial platform pad is 0-15 degrees.
Preferably, the internal included angle of the connecting end of the femoral condyle and the tibial platform pad is 85-130 degrees.
Preferably, the periphery of the tibial platform pad is provided with a plurality of lock catches fixed with the tibial platform support.
Preferably, a circle of gap is arranged on the periphery of the connecting surface of the tibial platform support and the tibial platform pad.
Preferably, the tibial platform pad and the periphery of the connecting surface of the tibial platform support are provided with mounting rails for clamping the tibial platform support.
Preferably, the connection surface of the tibial platform pad and the tibial platform support is provided with an anti-rotation island.
Preferably, one end of the tibial plateau support inserted into the bone marrow is provided with an anti-rotation structure.
Preferably, the anti-rotation structure is a plurality of vertical slots.
In summary, the present invention provides a knee joint prosthesis comprising: the femur condyle and the tibia platform support are connected through the tibia platform support, the other end of the tibia platform support is inserted into bone marrow, and a femur bone marrow inner stem of the femur condyle is inserted into the bone marrow; the rising angle of the front wing of the femoral condyle is 7 degrees. According to the technical scheme provided by the invention, the raised angle of the front wing of the femoral condyle can be flexibly selected from a small size femur during implantation, so that the implantation is more convenient and fast, and the implanted knee joint prosthesis is prevented from being embedded into the anterior cortical bone on the condyle; the knee joint prosthesis provided by the invention has the advantages of simple structure, convenience in installation and good stability, can accord with the normal natural knee joint movement process of a human body, and the structure not only ensures the perfect matching of the platform pad and the platform support, but also ensures the convenience in installation of the platform pad during operation, and also ensures the matching degree of the platform support and the shinbone osteotomy bone surface covering, so that the implanted prosthesis is stable and firm, and the abrasion is effectively reduced, thereby being beneficial to prolonging the service life of the knee joint prosthesis. The knee joint prosthesis provided by the invention solves the technical defects of complex structure, unchanged installation, low bending degree and poor stability of the implanted knee joint prosthesis in the prior art.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is an exploded view of a knee prosthesis according to an embodiment of the present invention;
FIG. 2 is a schematic view of a knee joint prosthesis according to an embodiment of the present invention;
FIG. 3 is a side view of a femoral condyle in a knee prosthesis provided in accordance with an embodiment of the present invention;
FIG. 4 is a bottom view of a femoral condyle in a knee prosthesis provided in accordance with an embodiment of the present invention;
fig. 5 is a schematic view of an assembly structure of a tibial plateau pad and a tibial plateau tray in a knee prosthesis according to an embodiment of the present invention;
FIG. 6 is a bottom view of a tibial plateau pad of a knee prosthesis according to an embodiment of the present invention;
wherein, the femoral condyle 1, the tibial plateau pad 2, the lock catch 21, the rotation-preventing island 22, the mounting rail 23 and the tibial plateau support 3.
Detailed Description
The embodiment of the invention provides a knee joint prosthesis, which is used for solving the technical defects of complex structure, unchanged installation, low bending degree and poor stability of the implanted knee joint prosthesis in the prior art.
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. 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 invention.
Referring to fig. 1 to 6, the present invention provides a knee joint prosthesis, including: the bone marrow bone plate comprises a femoral condyle 1, a tibial platform pad 2 and a tibial platform support 3, wherein the femoral condyle 1 is connected with the tibial platform support 3 through the tibial platform pad 2, the other end of the tibial platform support 3 is inserted into bone marrow, and a femoral marrow inner handle of the femoral condyle 1 is inserted into the bone marrow; the rising angle of the anterior limb of the femoral condyle 1 is 7 °. The knee joint prosthesis provided by the invention solves the technical defects of complex structure, unchanged installation, low bending degree and poor stability of the implanted knee joint prosthesis in the prior art.
In the technical scheme provided by the embodiment of the invention, referring to fig. 1 to 3, the special design of the rising angle of the front wing of the femoral condyle 1 protects the upright post of the posterior stable knee joint prosthesis and avoids the point load of the posterior cruciate ligament retaining prosthesis through the load sharing performance, so that when a doctor implants the knee joint prosthesis, the doctor can flexibly select a small size femur, the implantation is more convenient and fast, a more fitting implanted knee joint is provided for a patient, and the implanted knee joint prosthesis is prevented from being embedded into the anterior cortical bone on the condyle; the knee joint prosthesis provided by the invention has the advantages of simple structure, convenience in installation and good stability, can accord with the normal natural knee joint movement process of a human body, and the structure not only ensures the perfect matching of the platform pad and the platform support, but also ensures the convenience in installation of the platform pad during operation, and also ensures the matching degree of the platform support and the shinbone osteotomy bone surface covering, so that the implanted prosthesis is stable and firm, and the abrasion is effectively reduced, thereby being beneficial to prolonging the service life of the knee joint prosthesis.
Referring to fig. 4, in the knee joint prosthesis according to the embodiment of the present invention, the outer end surface of the femoral condyle 1 is a rotational arc surface. The structural design of the rotary cambered surface can ensure that the femoral condyle 1 obtains a larger rotary freedom degree, and after the knee joint prosthesis is implanted, the meniscus connected with the knee joint prosthesis can keep at least positive and negative 30-degree rotation, so that the knee joint prosthesis has a better movable freedom degree.
In the technical scheme provided by the embodiment of the invention, the outer circumference radian of the connecting end of the femoral condyle 1 and the tibial platform pad 2 is 0-15 degrees, and the inner included angle of the connecting end of the femoral condyle 1 and the tibial platform pad 2 is 85-130 degrees.
Referring to fig. 5, in the knee joint prosthesis according to the embodiment of the present invention, the periphery of the tibial platform pad 2 is provided with a plurality of locking buckles 21 fixed with the tibial platform tray 3; the design of hasp 21 can be so that tibial platform pad 2 and tibial platform support 3 better fixed, and tibial platform pad 2 takes place not hard up with the two being connected of tibial platform support 3 when preventing the knee joint motion, and simultaneously, the connection of each part is stable when the knee joint prosthesis of being convenient for implants.
The technical scheme is further optimized, the implantation difficulty of the tibial platform pad 2 is effectively reduced, and the tibial platform pad 2 is convenient to install and implant.
Referring to fig. 6, the tibial platform pad 2 and the tibial platform tray 3 are advantageously installed and fixed, and in the knee joint prosthesis provided by the embodiment of the present invention, the periphery of the connection surface between the tibial platform pad 2 and the tibial platform tray 3 is provided with an installation rail 23 for the tibial platform tray 3 to be inserted.
In order to effectively reduce micromotion, increase the contact area of the back and effectively enhance the fixing effect of the tibial platform pad 2, in the technical scheme provided by the embodiment of the invention, the anti-rotation island 22 is arranged on the connecting surface of the tibial platform pad 2 and the tibial platform support 3. The anti-rotation island 22 is further matched with the joint stress reduced by the structure, so that micromotion can be eradicated to the greatest extent, the problem of back abrasion of the implanted knee joint prosthesis is solved, and the service life of the implanted knee joint prosthesis is effectively prolonged.
In order to effectively prevent the tibial platform tray 3 from rotating in the bone marrow, the knee joint prosthesis provided by the embodiment of the invention is provided with an anti-rotation structure at one end of the tibial platform tray 3 inserted into the bone marrow.
On the basis of effectively ensuring good anti-rotation effect of the anti-rotation structure, the anti-rotation structure is simple and convenient in design and simple in structure.
In summary, the present invention provides a knee joint prosthesis comprising: the femur condyle and the tibia platform support are connected through the tibia platform support, the other end of the tibia platform support is inserted into bone marrow, and a femur bone marrow inner stem of the femur condyle is inserted into the bone marrow; the rising angle of the front wing of the femoral condyle is 7 degrees. According to the technical scheme provided by the invention, the raised angle of the front wing of the femoral condyle can be flexibly selected from a small size femur during implantation, so that the implantation is more convenient and fast, and the implanted knee joint prosthesis is prevented from being embedded into the anterior cortical bone on the condyle; the knee joint prosthesis provided by the invention has the advantages of simple structure, convenience in installation and good stability, can accord with the normal natural knee joint movement process of a human body, and the structure not only ensures the perfect matching of the platform pad and the platform support, but also ensures the convenience in installation of the platform pad during operation, and also ensures the matching degree of the platform support and the shinbone osteotomy bone surface covering, so that the implanted prosthesis is stable and firm, and the abrasion is effectively reduced, thereby being beneficial to prolonging the service life of the knee joint prosthesis. The knee joint prosthesis provided by the invention solves the technical defects of complex structure, unchanged installation, low bending degree and poor stability of the implanted knee joint prosthesis in the prior art.
While the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Claims (10)
1. A knee joint prosthesis, comprising: the femur condyle and the tibia platform support are connected through the tibia platform support, the other end of the tibia platform support is inserted into bone marrow, and a femur bone marrow inner stem of the femur condyle is inserted into the bone marrow;
the rising angle of the front wing of the femoral condyle is 7 degrees.
2. The knee joint prosthesis of claim 1, wherein the outer end surface of the femoral condyle is a rotationally curved surface.
3. The knee joint prosthesis of claim 1 or 2, wherein the outer circumference curvature of the connecting end of the femoral condyle and the tibial plateau pad is 0-15 °.
4. The knee joint prosthesis of claim 1 or 2, wherein the internal angle between the connecting ends of the femoral condyle and the tibial plateau pad is 85-130 °.
5. The knee joint prosthesis of claim 1, wherein the tibial plateau pad has a plurality of latches on a periphery thereof that are secured to the tibial plateau tray.
6. The knee joint prosthesis of claim 1, wherein a ring of voids is provided around the periphery of the interface between the tibial plateau tray and the tibial plateau pad.
7. The knee joint prosthesis of claim 1, wherein the periphery of the connecting surface of the tibial plateau pad and the tibial plateau tray is provided with a mounting rail for the tibial plateau tray to be clamped in.
8. The knee joint prosthesis of claim 1, wherein the connection surface of the tibial plateau pad and the tibial plateau tray is provided with an anti-rotation island.
9. The knee joint prosthesis of claim 1, wherein the tibial plateau is provided with an anti-rotation feature at an end of the tibial plateau inserted into the bone marrow.
10. The knee joint prosthesis of claim 9, wherein the anti-rotation feature is a plurality of vertical slots.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910951459.2A CN110664519A (en) | 2019-10-08 | 2019-10-08 | Knee joint prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910951459.2A CN110664519A (en) | 2019-10-08 | 2019-10-08 | Knee joint prosthesis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110664519A true CN110664519A (en) | 2020-01-10 |
Family
ID=69080896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910951459.2A Pending CN110664519A (en) | 2019-10-08 | 2019-10-08 | Knee joint prosthesis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110664519A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111603278A (en) * | 2020-06-22 | 2020-09-01 | 北京爱康宜诚医疗器材有限公司 | Knee joint prosthesis |
| CN116098746A (en) * | 2023-04-12 | 2023-05-12 | 北京纳通医疗科技控股有限公司 | Artificial knee joint prosthesis and artificial knee joint prosthesis system |
-
2019
- 2019-10-08 CN CN201910951459.2A patent/CN110664519A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111603278A (en) * | 2020-06-22 | 2020-09-01 | 北京爱康宜诚医疗器材有限公司 | Knee joint prosthesis |
| CN116098746A (en) * | 2023-04-12 | 2023-05-12 | 北京纳通医疗科技控股有限公司 | Artificial knee joint prosthesis and artificial knee joint prosthesis system |
| CN116098746B (en) * | 2023-04-12 | 2023-06-27 | 北京纳通医疗科技控股有限公司 | Artificial knee joint prosthesis and artificial knee joint prosthesis system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2513917C (en) | Articulating implant system | |
| Harley et al. | Hip replacement for adults with unreduced congenital dislocation. A new surgical technique | |
| US20080243263A1 (en) | Mobile bearing assembly having multiple articulation interfaces | |
| US8647391B2 (en) | Malleolar replacement devices | |
| Mercuri | Considering total temporomandibular joint replacement | |
| US20120065737A1 (en) | Prosthetic femoral stem for use in high offset hip replacement | |
| CN104586544A (en) | High-flexion type knee joint prosthesis | |
| US20120296434A1 (en) | Knee prosthesis | |
| US8900315B2 (en) | Constrained condylar knee device | |
| CN110664519A (en) | Knee joint prosthesis | |
| CN107374787A (en) | The artificial prosthesis and application method of the adjustable overlapping attachment structure in long bone backbone portion | |
| Levadoux et al. | Total wrist arthroplasty with Destot prostheses in patients with posttraumatic arthritis | |
| KR102649339B1 (en) | tibial plateau patch | |
| Kneisl et al. | Mobile knee reconstructions after resection of malignant tumors of the distal femur | |
| CN112155800A (en) | Single condyle knee joint prosthesis | |
| CN109157309B (en) | Proximal tibial filler block prosthesis | |
| CN211658427U (en) | Knee joint prosthesis | |
| CN209316155U (en) | Proximal tibia filling block prosthese | |
| Baumgart et al. | Reduction of high hip dislocation with a distraction nail and arthroplasty (preliminary results of a novel technique) | |
| Adams | Total wrist arthroplasty | |
| CN220193265U (en) | Tibia plug-in knee joint revision operation of rotary hinge | |
| CN218792650U (en) | Novel knee joint prosthesis | |
| CN219480477U (en) | Humerus distal joint surface prosthesis | |
| CN216985116U (en) | Bone plate | |
| Fink | Revision Arthroplasty in Periprosthetic Fractures of the Knee |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |