Patent ID: 8685030
Filing Date: 2014-04-01
Classification: A61B

Abstract:
1. A cutting block for making an incision into a patient's bone, configured for use with a navigation system configured to define a reference coordinate system with respect to the patient's bone, the cutting block comprising: a cutting guide having an incision plane; a first localization reference trackable by the navigation system and attached to the cutting guide for determining a three-dimensional spatial position of the incision plane; a fixation device configured to be fixable to the bone; a pre-adjusting device including a second localization reference trackable by the navigation system, the pre-adjusting device having a first end coupled to the fixation device and a second movable end having a base coordinate system associated therewith and to which the second localization reference is attached, the pre-adjusting device adjustable for aligning the base coordinate system with respect to the reference coordinate system such that a first axis of the base coordinate system runs parallel to a plane spanned by two axes of the reference coordinate system, and a second axis of the base coordinate system runs parallel to a third axis of the reference coordinate system; and an adjusting device having a first end fixed in relation to the base coordinate system and a second end adjustable relative to the first end of the adjusting device, wherein the adjusting device is operative to set a position of the incision plane relative to the bone with two rotational degrees of freedom and one translational degree of freedom after alignment of the pre-adjusting device, the adjusting device.