Method of performing a minimally invasive procedure on a hip joint of a patient to relieve femoral acetabular impingement

摘要

A method of performing a minimally invasive procedure on a hip joint of a patient to relieve a femoral acetabular impingement. An access device is placed through skin of the patient to provide minimally invasive access to a target volume of material that creates the femoral acetabular impingement. A cutting accessory is placed into the access device to remove material and relieve the femoral acetabular impingement. A tracking and control system establishes a virtual boundary that defines the target volume of material that creates the femoral acetabular impingement, tracks a position of the cutting accessory relative to the virtual boundary, and;controls movement of the cutting accessory so that cutting is substantially maintained within the virtual boundary.

主权项

1. A method of performing a minimally invasive procedure on a hip joint of a patient to relieve a femoral acetabular impingement using an instrument having a hand-held portion, a cutting accessory defining a rotational axis, a drive motor for rotating the cutting accessory, and a separate motor for moving the cutting accessory longitudinally relative to the hand-held portion, said method comprising the steps of:
placing an access device through skin of the patient to provide minimally invasive access to a target volume of material that creates the femoral acetabular impingement; manually grasping and supporting the hand-held portion of the instrument to place the cutting accessory into the access device; removing material with the cutting accessory to relieve the femoral acetabular impingement while manually grasping and supporting the hand-held portion of the instrument; and operating a tracking and control system to:
establish a virtual boundary that defines the target volume of material that creates the femoral acetabular impingement;track a position of the cutting accessory relative to the virtual boundary; andcontrol movement of the cutting accessory longitudinally along the rotational axis relative to the hand-held portion so that cutting is substantially maintained within the virtual boundary.