System and method for determining a location of an orthopaedic medical device
First Claim
1. A computer assisted orthopaedic surgery system comprising:
- an orthopaedic medical device having a first wireless transmitter that is configured to transmit a first wireless signal;
a plurality of first antennas each of which is positioned substantially coplanar with each other;
a second antenna positioned non-coplanar with respect to the plurality of first antennas; and
a controller electrically coupled to the plurality of first antennas and the second antenna, the controller being configured to determine the location of the orthopaedic medical device based on output signals received from the plurality of first antennas and the second antenna in response to the first wireless signal.
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Accused Products
Abstract
A system and method for determining a location of an orthopaedic medical device includes a controller and an array of antennas. The array of antennas includes a number of coplanar antennas and one or more additional antennas positioned non-coplanar relative to the coplanar antennas. The coplanar and non-coplanar antennas may be directional antennas. The orthopaedic medical device includes a wireless transmitter circuit configured to transmit a wireless signal and may be coupled to a bone of the patient, an orthopaedic implant, or an orthopaedic surgical tool. The controller is electrically coupled to the array of antennas and configured to determine a location of the orthopaedic medical device based on output signals received from the antennas in response to the wireless signal.
699 Citations
40 Claims
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1. A computer assisted orthopaedic surgery system comprising:
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an orthopaedic medical device having a first wireless transmitter that is configured to transmit a first wireless signal;
a plurality of first antennas each of which is positioned substantially coplanar with each other;
a second antenna positioned non-coplanar with respect to the plurality of first antennas; and
a controller electrically coupled to the plurality of first antennas and the second antenna, the controller being configured to determine the location of the orthopaedic medical device based on output signals received from the plurality of first antennas and the second antenna in response to the first wireless signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A computer assisted orthopaedic surgery system comprising:
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a first directional antenna;
a second directional antenna coplanar with the first directional antenna;
a third directional antenna coplanar with the first and second directional antennas;
a fourth directional antenna non-coplanar with respect to the first, second, and third directional antennas; and
a controller electrically coupled to the first, second, third, and fourth directional antennas and configured to;
(i) receive output signals from the first, second, third, and fourth directional antennas, and (ii) determine a location of an orthopaedic medical device based on the output signals. - View Dependent Claims (20, 21, 22, 23, 24, 25)
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26. An implantable orthopaedic medical device for use in determining a location of a bone of a patient, the implantable orthopaedic medical device comprising:
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an antenna coil;
a transmitter circuit electrically coupled to the antenna coil and configured to transmit a non-modulated wireless signal at a predetermined frequency using the antenna coil. - View Dependent Claims (27, 28, 29, 30, 31)
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32. A method for determining a location of an orthopaedic medical device having a wireless transmitter associated therewith, the method comprising:
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receiving a wireless signal from the wireless transmitter with a plurality of coplanar directional antennas;
receiving the wireless signal with a directional antenna positioned non-coplanar with respect to the coplanar directional antennas;
receiving output signals from each of the directional antennas;
comparing the output signals; and
determining data indicative of the location of the orthopaedic medical device based on the comparing steps. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40)
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Specification