RADINSKY, ILIYA,CHASSE, MELANIE,AMIOT, LOUIS-PHILIPPE,ODERMATT, DANIEL
申请号：
CA2607036
公开号：
CA2607036C
申请日:
2006.06.01
申请国别(地区):
CA
年份:
2013
代理人:
摘要：
A CAS system (50) and method (100) for measuring surgical parameters duringhip replacement surgery to guide an operator (S) in inserting a hip jointimplant in a femur, comprising a first trackable reference (56) in fixedrelation with the pelvis and a registration tool (56). A sensor apparatus (54)tracks the first trackable reference (56) and the registration tool (56). Acontroller unit (52) is connected to the sensor apparatus (54) so as toreceive tracking data for the first trackable reference (56) and theregistration tool (56). The controller unit (52) has a position andorientation calculator (202) to calculate from the tracking data a positionand orientation of the pelvic trackable reference (56) to track the pelvicframe of reference, and of the registration tool (56) to produce a femoralframe of reference at two sequential operative steps. A reference orientationadjustor (204) receives tracking data for the pelvic frame of reference, andthe femoral frame of reference associated with the first trackable reference(56), to orient the femoral frame of reference in a reference orientation withrespect to the pelvic frame of reference, and to produce a referenceadjustment value as a function of the reference orientation. A surgicalparameter calculator (206) receives tracking data from the registration tool(56) to calculate surgical parameters as a function of the referenceadjustment value, the surgical parameters at the two sequential operativesteps being related by the reference orientation.
