IMPLANTABLE MEDICAL DEVICES AND SYSTEMS HAVING DUAL FREQUENCY INDUCTIVE TELEMETRY AND RECHARGE
First Claim
Patent Images
1. An implantable medical device, comprising:
- a first tank circuit tuned to a first frequency by comprising a first coil portion and a first capacitance, the first coil portion being connected to a first node;
a second tank circuit tuned to a second frequency by comprising a second coil portion and a second capacitance, the second coil portion being connected to the first node;
a receiver with at least one input connected to a node of the second tank circuit;
a battery;
a rectifier between the battery and the first tank circuit; and
medical circuitry electrically coupled to the battery.
1 Assignment
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Accused Products
Abstract
Implantable devices and related systems utilize coils or coil portions of a coil for inductive telemetry at one frequency and recharge at another frequency. The coils or coil portions are included in one or more tank circuits that share at least one node between the coils or coil portions. The recharge application may be provided with variations for aspects including power management and rectification. The telemetry application may be provided with variations for aspects including receiver connectivity for the downlink and coil driving for the uplink.
65 Citations
40 Claims
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1. An implantable medical device, comprising:
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a first tank circuit tuned to a first frequency by comprising a first coil portion and a first capacitance, the first coil portion being connected to a first node; a second tank circuit tuned to a second frequency by comprising a second coil portion and a second capacitance, the second coil portion being connected to the first node; a receiver with at least one input connected to a node of the second tank circuit; a battery; a rectifier between the battery and the first tank circuit; and medical circuitry electrically coupled to the battery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A medical system, comprising:
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an external device comprising; a telemetry module; a controller that sends telemetry signals through the telemetry module; and an implantable medical device comprising; a first tank circuit tuned to a first frequency by comprising a first coil portion and a first capacitance, the first coil being connected to a first node; a second tank circuit tuned to a second frequency by comprising a second coil portion and a second capacitance, the second coil being connected to the first node; a receiver with at least one input connected to a node of the second tank circuit; a battery; a rectifier between the battery and the first tank circuit; and medical circuitry electrically coupled to the battery. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A method of providing telemetry and recharging for an implantable medical device, comprising:
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receiving energy at a first frequency via a first tank circuit of an implantable medical device that is tuned to the first frequency by a first coil portion and a first capacitance, the first coil being connected to a first node; receiving energy at a second frequency via a second tank circuit of the implantable medical device that is tuned to the second frequency by a second coil portion and a second capacitance, the second coil portion being connected to the first node; obtaining the energy from the second tank circuit at a receiver of the implantable medical device with at least one input connected to a node of the second tank circuit; passing the energy from the first tank circuit through a rectifier of the implantable medical device to a battery of the implantable medical device; and providing energy from the battery to medical circuitry of the implantable medical device. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40)
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Specification