Device and method for inserting a prosthetic knee
First Claim
1. A device for localizing and executing resection cuts on a femur (1) for preparing an implantation of a total endoprosthetic knee joint, comprising a reference device (5) releasably attachable to a distal area of the femur (1), alignment of the reference device relative to the femur (1) being accurately positionable, an adjustment device (10) connected to the reference device (5) being movable relative to the reference device and provided with a linearly movable base part (10g) for the attachment of an instrument, a first drive device (5v, 21) for linearly moving the adjustment device (10) relative to the reference device (5) in a direction (10b) of a first axis (X) of a system of coordinates (X, Y, Z), a second drive device (10f, 17) for linearly moving the base part (10g) in a direction (10b) of another axis (y) of the system of coordinates (X, Y, Z), both the first and second drive devices comprising a motor drive.
1 Assignment
0 Petitions
Accused Products
Abstract
A device for localizing and executing resection cuts on the femur (1) for preparing an implantation of a total endoprosthetic knee joint is provided. The device includes a reference device (5) adapted to be releasably attachable to the femur (1) in the distal area of the femur (1). Alignment of the reference device (5) relative to the femur (1) should be accurately positionable. An adjustment device (10) is connected to the reference device (5). The adjustment device (10) is movable relative to the reference device (5) and is provided with a linearly movable base part (10g) for the attachment of an instrument (11, 14). A first drive device (5v, 21) linearly moves the adjustment device (10) relative to the reference device (5) in the direction (10b) of a first axis (X) of a system of coordinates (X, Y, Z). A second drive device (10f, 17) linearly moves the base part (10g) in the direction (10d) of another, second axis (Y) of said system of coordinates (X, Y, Z). Both the first and second drive devices (5v, 21; 10f, 17) include a motor drive.
-
Citations
32 Claims
- 1. A device for localizing and executing resection cuts on a femur (1) for preparing an implantation of a total endoprosthetic knee joint, comprising a reference device (5) releasably attachable to a distal area of the femur (1), alignment of the reference device relative to the femur (1) being accurately positionable, an adjustment device (10) connected to the reference device (5) being movable relative to the reference device and provided with a linearly movable base part (10g) for the attachment of an instrument, a first drive device (5v, 21) for linearly moving the adjustment device (10) relative to the reference device (5) in a direction (10b) of a first axis (X) of a system of coordinates (X, Y, Z), a second drive device (10f, 17) for linearly moving the base part (10g) in a direction (10b) of another axis (y) of the system of coordinates (X, Y, Z), both the first and second drive devices comprising a motor drive.
-
32. A method for performing resection cuts on a femur (1) comprising:
- fixing a reference device (5) on a distal end of the femur (1), aligning the reference device relative to a direction of extent of the femur (1), displaceably connecting a sawing jig (11), for guiding a saw blade (12), to the aligned reference device (5), guiding the saw blade guided in the sawing jig in an alignment position defining the direction of extent of a resection cut to be made, carrying out the resection cut with the saw blade (12) guided in the alignment position.
Specification