Back to results
US 9,005,303 B2Granted
Knee and shoulder joint prosthesis
AssigneeSmith & Nephew, Inc.
InventorsGraeme I. Howling, Michael Dean Hughes, Jeffrey N. Yeager, Malcolm Brown, Rhianna Moss, Mason James Bettenga, Horacio Montes De Oca Balderas
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to prosthetic knee implants (100), components (101,102,103,104,105) of prosthetic knee implants, and methods of fixating the components to one another and, especially fixation of the implants to bone.
Claims23
A tibial tray for a knee prosthesis comprising:
- at least one fixator extending from a distal surface of the tray and configured for insertion into an opening in a patient's proximal tibia bone for holding the tray on the tibia bone;
- a polymer material attached to an exterior peripheral surface of the fixator and positioned for engagement within the opening in the tibia bone for fixation of the tray to the tibia bone, wherein the polymer material is positioned along a length of the fixator and includes an outer bone engagement surface;
- and
- means for outwardly expanding the polymer material within the opening in the tibia bone and for engaging the outer bone engagement surface of the polymer material against the tibia bone to thereby fixate the tray to the tibia bone.
1 more element
A femoral component for a knee prosthesis comprising:
- at least one femoral condyle;
- at least one peg configured for insertion into an opening in a patient's distal femur bone for holding the femoral component on the femur bone, the peg located on a proximal surface of the femoral condyle;
- a polymer material attached to an exterior peripheral surface of the peg and positioned for engagement within the opening in the femur bone for fixation of the femoral component to the femur bone, wherein the polymer material is positioned along a length of the peg and includes an outer bone engagement surface;
- and
- means for outwardly expanding the polymer material within the opening in the femur bone and for engaging the outer bone engagement surface of the polymer material against the femur bone to thereby fixate the femoral component to the femur bone.
2 more elements
Dependencies are inferred from the claim text.