To further facilitate reliable acquisition of the patient's pelvic plane.
An apparatus determines the plane of a surgical patient's pelvis and input that plane into a computer via a tracking system. The apparatus includes: means for aligning the patient in relation to a patient positioning frame with pelvic anatomical features of the patient disposed in secure mechanical relationship with corresponding patient-engaging features on the positioning frame, and then acquiring the positions of a plurality of index points, the index points constrained to lie in a predetermined relationship with an anterior pelvic plane (APP) defined by patient-engaging features on a patient positioning frame; and means for defining the APP by calculation based upon the acquired positions of the index points and the predetermined relationship between the APP and the index points. In the apparatus, the index points define a coordinate system having a known rotational relationshiop with the APP.
BRUCE ROBERT A
PRATT WILLIAM RALPH
PRATT CLYDE RONALD
| JP2000060883A | 2000-02-29 |
| WO2001021084A1 | 2001-03-29 | |||
| WO2002062248A1 | 2002-08-15 | |||
| US6311349B1 | 2001-11-06 |
Tadashi Masui
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita