Instrumented orthopaedic implant for identifying a landmark

摘要

A system (110, 150) for targeting a landmark (114, 160) is disclosed. The system includes an instrumented medical implant (112, 152), a control circuit (118, 153), a power supply (120, 157), and a landmark identifier (122, 154). The instrumented medical implant (112, 152) has one or more landmarks (114, 160) and each landmark (114, 160) has a corresponding coil (116, 162). The control circuit (118, 153) is electrically connected to the corresponding coil (116, 162), and the power supply (120, 157) is electrically connected to the control circuit (118,153). The landmark identifier (122, 154) has a magnetic sensor (124, 155) for sensing the corresponding coil (116, 162).

主权项

1. A system for targeting a landmark, the system comprising:
a. an instrumented medical implant having a first landmark and a second landmark, the instrumented medical implant comprising:
two or more first coils corresponding to the first landmark, wherein the first landmark is a first hole in the orthopaedic implant and the first coils are arranged to produce magnetic fields that designate a location and orientation of the first landmark; andtwo or more second coils corresponding to the second landmark, wherein the second landmark is a second hole in the orthopaedic implant and the second coils are arranged to produce magnetic fields that designate a location and orientation of the second landmark, the first coils being distinct from the second coils, the location of the first landmark being different from the location of the second landmark; b. a control circuit electrically connected to the first coils and the second coils, the control circuit being configured to selectively activate the first coils and the second coils to produce the magnetic fields that respectively designate the location of the first landmark or second landmark; c. a power supply electrically connected to the control circuit; and d. a landmark identifier having one or more magnetic sensors for sensing the magnetic fields produced by the first coils and the second coils.