IMPLANTABLE MEDICAL DEVICES AND SYSTEMS HAVING INDUCTIVE TELEMETRY AND RECHARGE ON A SINGLE COIL
1 Assignment
0 Petitions
Accused Products
Abstract
Implantable devices and related systems utilize a single coil for both inductive telemetry at one telemetry signal frequency and recharge at another recharge energy frequency. The coil is included in a tank circuit that may have a variable reactance. During telemetry, particularly outside of a recharge period, the reactance may be set so that the tank circuit is tuned to the telemetry frequency. During recharge, the reactance is set so that the tank circuit is tuned to the recharge frequency. Furthermore, the tank circuit may have a Q that is sufficiently small that the tank circuit receives telemetry frequency signals that can be decoded by a receiver while the tank is tuned to the recharge frequency so that telemetry for recharge status purposes may be done during the recharge period without changing the tuning of the tank circuit.
7 Citations
36 Claims
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1-16. -16. (canceled)
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17. A method of interaction with an implantable medical device, comprising:
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while a telemetry receiver of the implantable medical device that is coupled to a tank circuit is powered on, starting to receive energy at a first frequency from the tank circuit of the implantable medical device that is tuned to the first frequency where the energy powers the implantable medical device; and at the implantable medical device exchanging telemetry signals at a second frequency that is different from the first frequency through the tank circuit of the implantable medical device that is tuned to the first frequency. - View Dependent Claims (18, 19, 20, 21)
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22. A method of interaction with an implantable medical device, comprising:
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while a telemetry receiver of the implantable medical device that is coupled to a tank circuit is powered on, providing energy from a rectifier that is coupled to the tank circuit, the energy being received by the tank circuit at a first frequency while the tank circuit is tuned to the first frequency and where the energy powers the implantable medical device; and at the implantable medical device exchanging telemetry signals at a second frequency that is different from the first frequency through the tank circuit of the implantable medical device that is tuned to the first frequency. - View Dependent Claims (23, 24, 25, 26)
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27. An implantable medical device, comprising:
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a tank circuit tuned to a first frequency of a power signal that carries energy used to power the implantable medical device; a rectifier that is electrically connected to the tank circuit to provide the energy; medical circuitry electrically powered by the energy provided from the rectifier; and a receiver configured to receive telemetry signals from the tank circuit at a second frequency that is different than the first frequency while the tank circuit is tuned to the first frequency, the receiver being powered on when the rectifier begins providing the energy. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36)
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Specification