Combined fully organic high molecular material artificial knee joint
View Patent ↗A combined fully organic high molecular material artificial knee joint, comprising a femur condyle ( 2 ), a tibia holder ( 4 ) and a tibia liner ( 3 ), the femur condyle ( 2 ) and the tibia holder ( 4 ) being formed by polyether ether ketone (PEEK) or derivatives thereof, and the tibia liner ( 3 ) being formed by ultra-high molecular weight polyethylene (UHMWPE). The tibia holder ( 4 ) comprises a platform ( 6 ) and a stable wing positioning portion ( 5 ) vertical thereto; upper and lower ends of the tibia liner ( 3 ) are jointed with the femur condyle ( 2 ) and the platform ( 6 ) respectively; the femur condyle ( 2 ) buffers a slide surface of the tibia liner ( 3 ); and the tibia holder ( 4 ) can finely move relative to a fixed surface of the tibia liner ( 3 ), and buffering of the femur condyle ( 2 ) against the slide surface of the tibia liner ( 3 ) matches fine movement of the tibia holder ( 4 ) relative to the tibia liner ( 3 ). Main parts of all implant components of the artificial knee joint are formed by high molecular materials, thereby relieving allergy and toxicity problems probably caused by metal and metal corrosion; PEEK elastic modulus matches a natural bone, thereby relieving a stress shield problem; a wearing problem is greatly relieved by means of the combination of buffering of the PEEK femur condyle ( 2 ) against the slide surface of the UHMWPE tibia liner ( 3 ) and fine movement of the tibia holder ( 4 ) relative to the fixed surface of the UHMWPE tibia liner ( 3 ); and meanwhile, by adding enhancement and developing components, the practicality is further improved.
1. A combined fully organic high molecular material artificial knee joint comprising:
a femur condyle;
a tibia liner;
a tibia holder;
wherein the tibia holder comprises a platform and a stable wing positioning portion vertical thereto;
wherein the femur condyle is jointed to an upper end of the tibia liner and the platform of the tibia holder is jointed to a lower end of the tibia liner;
wherein the femur condyle, the tibia holder and the tibia liner are all formed by a high molecular material;
wherein the tibia liner is formed by ultra-high molecular weight polyethylene (UHMWPE); and
wherein each of a left side and a right side of the femur condyle is provided with a groove, and wherein a metal or ceramic inlay matching the shape of the groove is included in the groove.
2. The combined fully organic high molecular material artificial knee joint of claim 1 , wherein the femur condyle and the tibia holder are formed by polyether ether ketone or derivatives thereof.
3. The combined fully organic high molecular material artificial knee joint of claim 1 , wherein the tibia liner is formed by ultra-high molecular weight polyethylene.
4. The combined fully organic high molecular material artificial knee joint of claim 1 , further comprising a patella, wherein the patella is formed by ultra-high molecular weight polyethylene, and the patella is jointed to an upper end of the femur condyle.
5. The combined fully organic high molecular material artificial knee joint of claim 1 , wherein X-ray developing additives are contained in the femur condyle and in the tibia holder.
6. The combined fully organic high molecular material artificial knee joint of claim 1 , wherein the metals or alloys thereof include Co—Cr—Mo alloys, Ti or Ti alloys, Ta or Ta alloys, stainless steels, and/or Zr—Nb alloys.
7. The combined fully organic high molecular material artificial knee joint of claim 1 , wherein one or more metal strip parts is provided on a side of the upper end of the platform of the tibia holder.
8. The combined fully organic high molecular material artificial knee joint of claim 1 , wherein the height and thickness of the metal strip parts are not less than 0.5 mm and not more than 3.0 mm.
9. The combined fully organic high molecular material artificial knee joint of claim 1 , wherein the metals or alloys thereof include Co—Cr—Mo alloys, Ti or Ti alloys, Ta or Ta alloys, stainless steels, and/or Zr—Nb alloys.
10. The combined fully organic high molecular material artificial knee joint of claim 1 , wherein a metal reinforcing component is provided at an interface between outer end of the stable wing positioning portion and the platform of the tibia holder; and a metal reinforcing column perpendicular to the platform of the tibia holder is provided in the center of the stable wing positioning portion.
11. The combined fully organic high molecular material artificial knee joint of claim 10 , wherein the diameter of the metal reinforcing column is not less than 1.0 mm and not more than 10 mm.
12. The combined fully organic high molecular material artificial knee joint of claim 10 , wherein the metal inlays, the metal reinforcing component, the metal reinforcing column, and the metal strip parts are all formed by biocompatible metals or alloys thereof.
13. The combined fully organic high molecular material artificial knee joint of claim 1 , wherein the metals or alloys thereof include Co—Cr—Mo alloys, Ti or Ti alloys, Ta or Ta alloys, stainless steels, and/or Zr—Nb alloys.
14. A combined fully organic high molecular material artificial knee joint comprising:
a femur condyle;
a tibia liner;
a tibia holder;
wherein the tibia holder comprises a platform and a stable wing positioning portion vertical thereto;
wherein the femur condyle is jointed to an upper end of the tibia liner and the platform of the tibia holder is jointed to a lower end of the tibia liner;
wherein the femur condyle, the tibia holder and the tibia liner are all formed using a high molecular material, the femur condyle and the tibia holder are formed with polyether ether ketone (PEEK) or derivatives thereof, and the tibia liner is formed with ultra-high molecular weight polyethylene (UHMWPE); and
wherein each of a left side and a right side of the femur condyle is provided with a groove, and wherein a metal or ceramic inlay matching the shape of the groove is included in the groove.