Patent ID: 9655628
Date: 2017-05-23
CPC Classifications: A61B

Claim:
1. A surgical navigation device, for the purpose of adjusting a cutting plane to a desired position with respect to a bone of a patient, the device comprising: a bone fixation device constructed to be rigidly attached to the bone, the bone fixation device comprising a first fixation means for rigidly attaching a tracker to the bone fixation device and a second fixation means for releasably attaching a fixed part to the bone fixation device; a template constructed to be releasably attached to the bone fixation device, wherein the template comprises landmarks corresponding to anatomical landmarks of the bone for rough positioning of the bone fixation device relative to the bone, wherein the template is configured to be removed from the bone fixation device before the fixed part is attached to the bone fixation device; the fixed part constructed to be releasably attached to the bone fixation device via the second fixation means; a mobile part that is coupled to the fixed part and adjustable with respect to the fixed part, the mobile part including third fixation means for rigidly attaching a tracker to the mobile part, and including a cutting slot in which a saw blade can be inserted to perform cutting; a fixed tracker that is constructed to be rigidly attached to the bone fixation device via the first fixation means; and a mobile tracker that is constructed to be attached to the mobile part via the third fixation means, wherein the mobile and fixed parts are constructed to be removed as a unit from the bone fixation device when the bone fixation device is attached to the bone by detaching the fixed part from the second fixation means, and wherein the bone fixation device and the fixed part together support the mobile part in position with respect to the bone during a cutting operation by the saw blade inserted into the cutting slot.