7 results about "Knee implant" patented technology

A knee implant provides enhanced joint stability and controlled movement. The implant comprises a femoral component, a tibial component, and a braking mechanism operative therebetween. The braking mechanism includes a barrel, a shaft, and clutch plates alternately keying the barrel and shaft in a non-rotatable manner. A plunger, displaced under compression force between the components, compresses the clutch plates to create frictional engagement, restricting or locking relative movement under weight-bearing conditions. This allows stability during standing and controlled mobility when compression is reduced. Optionally, a magnetic biasing mechanism applies variable torque between the components, adapting joint behaviour to different loading conditions. The combined braking and biasing mechanisms provide reliable support and improved control for patients requiring joint stability during functional activities.

Disclosed herein are systems and methods for planning a knee arthroplasty procedure. A method may include registration of patient anatomy, including specific registration of the patella; anatomy modelling based on the registration; automated generation of anatomical landmarks; morphological characterization; risk classification; and a planning optimization process based on the morphological characterization and the risk classification. The risk classification may include a determination of potential patellar complications based on patient characteristics, such as patient demographic information and / or patient anatomical information compared with historical information of patient outcomes. The planning optimization process may determine knee implant components and / or the configuration thereof within the patient based on the patient risk classification.

The invention provides an orthopedic implant test auxiliary device, and belongs to the technical field of test equipment. Comprising a test box body, a control module is fixedly mounted on one side of the surface of the test box body, a mounting partition plate is fixedly mounted on the inner wall of the test box body, a liquid storage box is fixedly mounted on one side of the top of the inner wall of the test box body, and test equipment and a rotating assembly are mounted at the top end of the inner wall of the test box body; the rotating assembly is fixedly mounted at the top of the mounting partition plate, and the rotating assembly is used for rotating to change the rotating state of the knee joint implant. By simulating the body fluid condition in the knee joint of the human body, it is guaranteed that the knee joint implant can be close to the real use environment of the knee joint as much as possible during testing, secondary testing of the knee joint implant is achieved, the flexibility of the knee joint implant during testing is further improved, and the testing efficiency is improved. And the test efficiency of the knee joint implant is improved.

The invention relates to functionally graded polymeric knee implants for enhanced fixation, wear resistance and mechanical properties and manufacture thereof. The present invention includes polymer-based femoral and / or tibial component implants for total knee replacement / replacement procedures for providing improved wear resistance, enhanced physiological response at the bone / implant interface, and reduced stress shielding. The implant may be made via additive manufacturing. The articular surface of the implant may be implemented in the absence of any additive or in a form containing an additive for improving the tribological response. Furthermore, the instruments disclosed herein contain an interface surface (i.e., a bone / implant interface) in contact with natural bone, which may be present in its pure form, containing a bioactive additive. The implant has a porous topography on the bone / implant interface to improve biological response and improve fixation. Wherein the depth and topography of the additive is controlled via the techniques disclosed herein.

Various embodiments relate to a femoral component for a knee prosthesis optimized for kinematic alignment surgical technique. The component includes an anterior flange having a length of about 40 mm to about 60 mm measured from a distal femoral reference point to an apex of the flange; a lateral flange defining a lateral flange angle of about 8 degrees to about 11 degrees, the angle measured between a line extending along the lateral flange and a line perpendicular to a reference line that connects the farthest distal points of the medial condyle and the lateral condyle; and a trochlear groove formed in the anterior flange. The trochlear groove has a width that remains substantially constant from about 0 degrees of flexion to about 30 degrees of flexion, with a tapering angle of about 1 degree to about 12 degrees.

A polymeric based femoral and / or tibial component implant can be be used in total knee replacement / arthroplasty procedures serving to provide increased wear resistance, enhanced physiological response at the bone / implant interface, and decreased stress-shielding. The implant can be made via additive manufacturing. The articulating surface of the implant may be implemented in without any additive or in a form containing an additive for improved tribological response. Further, the a device contains an interfacial surface which is in contact with the native bone (i.e., bone / implant interface) which may exist in its pure form, containing a bioactive additive. The implant has a porous morphology on the bone / implant interface for improved biological response and improved fixation. The depth of the additives and the topographical morphology therein are controlled via techniques disclosed herein.