Bone preparation apparatus and method
A system and method for improving installation of a prosthesis. Devices include prosthesis installation tools, prosthesis assembly tools, site preparation systems, and improved power tools used in implant site preparation, the tools including a secondary motion that preferably includes an ultrasonic vibration.
1. A bone preparation tool, comprising:
a bone-processing implement configured to process an in-patient bone using a primary motion in a primary mode of freedom of motion; and
a motive system, coupled to said bone-processing implement, configured to operate said bone-processing implement in said primary mode of freedom of motion and in a secondary mode of motion, wherein said primary mode of freedom includes a non-ultrasonic motion and wherein said secondary mode of freedom includes an ultrasonic vibratory motion superimposed on said non-ultrasonic motion; and
wherein said bone-processing implement includes a femoral broach and wherein said primary mode of freedom of motion includes a longitudinally reciprocating motion.
2. The bone preparation tool of claim 1 wherein said primary mode of freedom of motion includes a subsonic motion for said primary motion.
3. The bone preparation tool of claim 1 further comprising:
a constraint, coupled to said processing implement, configured to predefine a set of bone regions for said in-patient bone and further configured to monitor a relative location of said processing implement relative to a particular portion of said in-patient bone to be processed by said processing implement;
wherein said constraint provides a realtime feedback signal during bone processing regarding a desirability of processing said particular portion of said in-patient bone.
4. The bone preparation tool of claim 3 wherein said constraint includes a haptic robotic system and wherein said realtime feedback signal includes a realtime tactile cue that varies responsive to said particular portion.
5. The bone preparation tool of claim 3 wherein said wherein said set of bone regions includes a first subset of desirable bone regions to be processed.
6. The bone preparation tool of claim 5 wherein said realtime feedback signal limits processing of said particular portion when said particular portion is not part of said first subset of desirable bone regions to be processed.
7. The bone preparation tool of claim 4 wherein said constraint includes a haptic robotic system and wherein said realtime feedback signal includes a realtime tactile cue that varies responsive to said particular portion.
8. The bone preparation tool of claim 5 wherein said constraint includes a haptic robotic system and wherein said realtime feedback signal includes a realtime tactile cue that varies responsive to said particular portion.
9. The bone preparation tool of claim 1 wherein said secondary mode of freedom is different from said primary mode of freedom.
10. A method for preparing an in-patient bone, comprising:
processing, using a bone-processing implement, the in-patient bone using a primary motion in a primary mode of freedom of motion for said bone-processing implement; and
concurrently operating said bone-processing implement in a secondary motion including a secondary mode of freedom of motion;
wherein said primary motion consists essentially of a non-ultrasonic motion;
wherein said secondary motion includes an ultrasonic vibration motion; and
wherein said bone-processing implement includes a femoral broach and wherein said primary mode of freedom of motion includes a longitudinally reciprocating motion.
11. The method of claim 9 further comprising:
constraining said processing using a constraint system coupled to said processing implement not to process undesired portions of the in-patient bone wherein said constraint system identifies a set of desirable regions of the in-patient bone to be processed using said processing implement.