Telemetry apparatus and method for an implantable medical device
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Abstract
An apparatus and method for enabling radio-frequency communications with an implantable medical device utilizing far-field electromagnetic radiation. Such radio-frequency communications can take place over much greater distances than with inductively coupled antennas.
35 Citations
40 Claims
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1-20. -20. (Canceled)
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21. An implantable cardiac rhythm management device, comprising:
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a housing for containing electronic circuitry;
rhythm control circuitry electrically connected by one or more conductors within a therapy lead to an electrode adapted for disposition within the heart;
an antenna extending from the housing, wherein the antenna is formed by the conductors of the therapy lead;
circuitry within the housing for transmitting or receiving a modulated radio-frequency carrier at a specified frequency to or from the antenna; and
,wherein the conductors within a distal portion of the therapy lead adjacent to the electrode are arranged to form a filter section that blocks the transmission of radio-frequency energy to or from the electrode. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A method for transmitting and receiving radio-frequency signals in an implantable cardiac rhythm management device, comprising:
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sensing intrinsic cardiac electrical activity from an intravascular therapy lead having an electrode adapted for disposing near the heart;
transmitting or receiving a modulated radio-frequency carrier at a specified frequency to or from an antenna incorporated into the therapy lead; and
,blocking the transmission of radio-frequency energy to or from the electrode with a filter section within a distal portion of the lead adjacent to the electrode. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40)
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Specification