Patent ID: 8096997

Claim:
A device for guiding a cutting tool capable of cutting bone portions at the level of the head of a femoral bone comprising: a seat configured for fastening to a side of said femoral bone adjacent to distal condyles where the femoral bone is to be cut, said seat being coupled to the femoral bone about a first rotation axis (Γ); means for adjusting in two substantially perpendicular directions the first rotation axis with respect to said seat including after the device is fastened to the femoral bone; an arm supporting first and second motors that are spaced a fixed distance from one another in all operating positions of the device, with one end of said arm being pivotally assembled on said seat according to the first rotation axis; and a cutting guide configured to guide the cutting tool and is pivotally assembled on the arm according to a second rotation axis (Δ), wherein the second motor is operatively coupled to the cutting guide for rotating the cutting guide about the second rotation axis, wherein a distance between the first and second rotational axes is also fixed in all operating positions of the device.