Instrumented orthopaedic implant for identifying a landmark
First Claim
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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; and
two 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.
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Accused Products
Abstract
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).
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Citations
27 Claims
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1. A system for targeting a landmark, the system comprising:
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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; and two 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of locating landmarks of an instrumented orthopaedic implant, the method comprising:
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installing an instrumented orthopaedic implant relative to a bone, the instrumented orthopaedic implant having two or more first coils corresponding to the first landmark and two or more second coils corresponding to the second landmark, the first coils being distinct from the second coils; activating the first coils to produce magnetic fields that indicate a location and orientation of the first landmark; obtaining first sensor data based on sensing the first coils; locating the first landmark based on the first sensor data independent of activation of the second coils; activating the second coils to produce magnetic fields that indicate a location and orientation of the second landmark; obtaining second sensor data based on sensing the second coils; and locating the second landmark based on the second sensor data independent of activation of the first coils. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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25. A system for targeting a landmark, the system comprising:
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a. an instrumented medical implant having a shaft and at least one landmark, the at least one landmark having a first corresponding coil that extends around an exterior portion of the shaft of the instrumented medical implant and a second corresponding coil that extends around a perimeter of the at least one landmark; b. a control circuit electrically connected to the first coil and the second coil; c. a power supply electrically connected to the control circuit; and d. a landmark identifier having a magnetic sensor for sensing the first coil and the second coil. - View Dependent Claims (26)
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27. A system for targeting a landmark, the system comprising:
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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 and two or more second coils corresponding to the second landmark, the first coils being distinct from the second coils, wherein the instrumented medical implant defines a longitudinal groove in an exterior of the instrumented medical implant, and wherein the instrumented medical implant comprises one or more conductor wires for connecting the first coils and the second coils to a current source, the one or more conductor wires being disposed in the longitudinal groove; 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; c. a power supply electrically connected to the control circuit; and d. a landmark identifier having one or more magnetic sensors for sensing the first coils and the second coils.
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Specification