Patent ID: 9433473
Filing Date: 2016-09-06
CPC Classification: A61B,A61F

Claim Text:
1. A digitizing tool adapted for digitizing a mechanical axis of a tibia using a computer-assisted surgery system, the tool comprising: an upper mounting end and a lower mounting end interconnected by an alignment rod extending therebetween, the upper mounting end being releasably fastenable to an upper reference point on a tibial plateau and the lower mounting end having a self-centering malleoli engaging mechanism thereon, the self-centering malleoli engaging mechanism including opposed caliper arms each having a malleolus clamp, the caliper arms being displaceable in a common plane relative to each other for clamping engagement with the medial and lateral malleoli, such that a midpoint between the caliper arms corresponds to a lower reference point defined midway between the medial and lateral malleoli; and at least one trackable member mounted to the alignment rod of the tool, the trackable member producing at least orientation information and being adapted for communication with the computer-assisted surgery system; wherein the alignment rod is aligned parallel with the mechanical axis of the tibia which extends between the upper reference point and the lower reference point when the tool is mounted on the tibia.