Henry B. Faber;Nicholas S. Ritchey;Tobias Schwägli;William M. Ricci;Nathaniel Kelley Grusin;Gene Edward Austin;James K. Rains
发明人:
Nicholas S. Ritchey,Henry B. Faber,Nathaniel Kelley Grusin,James K. Rains,Gene Edward Austin,Tobias Schwägli,William M. Ricci
申请号：
US12547716
公开号：
US08784425B2
申请日:
2009.08.26
申请国别(地区):
US
年份:
2014
代理人:
摘要：
Systems (10, 110, 1010, 1110) for identifying landmarks (31, 131, 1028, 1128) on orthopedic implants (30, 130, 1024, 1124) are disclosed. The systems (10, 110, 1010, 1110) include a field generator (16, 116, 1016, 1116) for generating a magnetic field and an orthopedic implant (30, 130, 1024, 1124) located within the magnetic field. The implant (30, 130, 1024, 1124) includes at least one landmark (31, 131, 1028, 1128), an optional removable probe (1029, 1129) and a first magnetic sensor (32, 132, 1026, 1126). The systems (10, 110, 1010, 1110) further include a landmark identifier (18, 118, 1016, 1116) with an optional second magnetic sensor (20, 120, 1020, 1120) and a processor (12, 112, 1012, 1112) for comparing sensor data from the first sensor (32, 132, 1026,1126) and second sensor (20, 120, 1020, 1120) or data from the first sensor (32, 132, 1026,1126) and landmark identifier (18, 118, 1016, 1116) using the set distance to calculate the position of the landmark identifier (18, 118, 1016, 1116) relative to the at least one landmark (31, 131, 1028,1128). The disclosed systems (10, 110, 1010, 1110) allow for blind targeting of one or more landmarks (31, 131, 1028, 1128).
