Instrumentation for the production of fixing surfaces for a knee joint endoprosthesis
AssigneePeter Brehm
InventorPeter Müller
Life of this patent
Estimating the term…
Abstract
In an instrumentation for the production of fixing surfaces for fixing a knee joint endoprosthesis to the femoral condyle that is adjacent to the knee, and to the tibial head, provision is made for a rotary milling head, which is fixable in relation to the longitudinal axis of the femur and tibia, respectively, by fastening means and which, in relation to this longitudinal axis, is angularly adjustable in a stable stop position by being pivoted, defining milling planes, and which is displaceable in the set milling plane, covering same and working as a face milling cutter or as a cylindrical milling cutter.
Claims20
An instrument for production of fixing surfaces for a knee joint endoprosthesis to be fixed to the femoral condyle that is adjacent to the knee, and to the tibial head,
- fastening means a rotary milling head comprising (2) which is fixable in relation to the longitudinal axis of the femur (40) and tibia, respectively, by said fastening means and which, in relation to the longitudinal axis, is angularly adjustable in a stable stop position by being pivoted, defining milling planes and which is displaceable in a set milling plane, covering same and working as a face milling cutter or as a cylindrical milling cutter;
- wherein the fastening means includes joined-on clamp pieces (27, 28, 29) which are capable of enclasping the respective femur (40);
- and
- wherein at least one of a plurality of fastening thorns (30) and holes into which fastening screws are inserted are formed on ends of the joined-on clamp pieces (27, 28, 29).
An instrument for production of fixing surfaces for a knee joint endoprosthesis to be fixed to the femoral condyle that is adjacent to the knee, and to the tibial head comprising,
- fastening a rotary milling head (2) which is fixable in relation to the longitudinal axis of the femur (40) and tibia, respectively, by said fastening means and which, in relation to the longitudinal axis, is angularly adjustable in a stable stop position by being pivoted, defining milling planes and which is displaceable in a set milling plane, covering same and working as a face milling cutter or as a cylindrical milling cutter;
- wherein a set-screw (31) for a threaded spindle of a stable stop position is provided for height adjustment.
An instrument for the production of fixing surfaces for a knee joint endoprosthesis to be fixed to the femoral condyle that is adjacent to the knee, and to tibial head,
- fastening means a rotary milling head comprising (2) which is fixable in relation to the longitudinal axis of the femur (40) and tibia, respectively, by said fastening means and which, in relation to the longitudinal axis, is angularly adjustable in a stable stop position by being pivoted, defining milling planes and which is displaceable in a set milling plane, covering same and working as a face milling cutter or as a cylindrical milling cutter;
- wherein the milling head (2) is linearly translationally displaceable in the milling planes via guide bars (5, 11) and pivotal by a pivot axis (16) or cross support.
An instrument for production of fixing surfaces for a knee joint endoprosthesis to be fixed to the femoral condyle that is adjacent to the knee, and to the tibial head, comprising fastening means a rotary milling head (2) which is fixable in relation to the longitudinal axis of the femur (40) and tibia, respectively, by said fastening means and which, in relation to this longitudinal axis, is angularly adjustable in a stable stop position by being pivoted, defining milling planes and which is displaceable in a set milling-plane, covering same and working as a face milling cutter or as a cylindrical milling cutter;
- wherein infrared markers are provided for navigation.
Dependencies are inferred from the claim text.