SYSTEM AND METHOD FOR DETERMINING A LOCATION OF AN ORTHOPAEDIC MEDICAL DEVICE
First Claim
1. A computer assisted orthopaedic surgery system comprising:
- a first orthopaedic medical device having a first wireless transmitter that is configured to transmit a first wireless signal using a predetermined carrier frequency;
a second orthopaedic medical device having a second wireless transmitter that is configured to transmit a second wireless signal using the predetermined carrier frequency;
a plurality of antennas; and
a controller electrically coupled to the plurality of antennas and configured to (i) receive first output signals from the plurality of antennas in response to the first wireless signal, (ii) receive second output signals from the plurality of antennas in response to the second wireless signal, (iii) demodulate the first and second output signals, (iv) determine a location of the first orthopaedic medical device based on the demodulated first output signals, and (v) determine a location of the second orthopaedic medical device based on the demodulated second output signals.
1 Assignment
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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 serial number of the device on a predetermined carrier frequency. The orthopaedic medical device 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 modulated wireless signal.
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Citations
26 Claims
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1. A computer assisted orthopaedic surgery system comprising:
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a first orthopaedic medical device having a first wireless transmitter that is configured to transmit a first wireless signal using a predetermined carrier frequency; a second orthopaedic medical device having a second wireless transmitter that is configured to transmit a second wireless signal using the predetermined carrier frequency; a plurality of antennas; and a controller electrically coupled to the plurality of antennas and configured to (i) receive first output signals from the plurality of antennas in response to the first wireless signal, (ii) receive second output signals from the plurality of antennas in response to the second wireless signal, (iii) demodulate the first and second output signals, (iv) determine a location of the first orthopaedic medical device based on the demodulated first output signals, and (v) determine a location of the second orthopaedic medical device based on the demodulated second output signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. 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 modulated wireless signal from the wireless transmitter with a plurality of coplanar antennas; receiving the modulated wireless signal with an antenna positioned non-coplanar with respect to the coplanar antennas; receiving output signals from each of the antennas; demodulating the output signals; and determining data indicative of the location of the orthopaedic medical device based on the demodulated output signals. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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21. A computer assisted orthopaedic surgery system comprising:
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an orthopaedic medical device having a wireless transmitter that is configured to transmit a modulated 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 and configured to (i) receive output signals from the plurality of first antennas and the second antenna in response to the modulated wireless signal, (ii) demodulate the output signals, and (ii) determine the location of the orthopaedic medical device based on the demodulated output signals. - View Dependent Claims (22, 23)
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24. 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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a housing; an antenna coil positioned in the housing; a memory device positioned in the housing and having stored therein a serial number associated with the implantable orthopaedic medical device; and a transmitter circuit positioned in the housing and electrically coupled to the antenna coil and the memory device, wherein the transmitter is configured to transmit the serial number on a predetermined carrier frequency at a predetermined pulse repetition frequency using the antenna coil. - View Dependent Claims (25, 26)
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Specification