2 results about "Artificial knee" patented technology

This invention provides an experimental device for friction and wear testing of an artificial knee joint, belonging to the field of material friction and wear technology. It includes a lifting module, with a femoral clamping module at its top. The femoral clamping module contains a polyurethane elastomer sealed chamber, and a tibial clamping module is connected below this chamber. An intelligent temperature-controlled circulating hydraulic pump is located on one side of the polyurethane elastomer sealed chamber. This invention achieves reciprocating motion through a reversing valve control. Combined with sub-millimeter precision adjustment of the hydraulic actuator and differentiated installation positions, it realizes high-precision flexion, extension, and torsional movements of the artificial knee joint. A stable base load is provided by a central hydraulic loading module, while the unnecessary torque from the dual electromagnetic loading modules cancels each other out. Simultaneously, instantaneous impact force is superimposed on the stable hydraulic load through instantaneous power switching, enriching the loading methods of the experimental device for friction and wear testing of an artificial knee joint.

To provide an artificial knee joint that may acquire properties close to a normal knee joint.SOLUTION: An artificial knee joint 1 includes: an insert member 2 embedded in a hole formed in part of a joint surface of a medial condyle MC or a lateral condyle LC of a tibia T; and a beam member 3 which is disposed downward the insert member 2, of which both ends have a length fixed to a cortical bone of the tibia T, and which supports the insert member 2 from a lower side.SELECTED DRAWING: Figure 1