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US 11,951,318 B2Granted
Recharge system extending depth and area of useful recharge via dynamically adjusted rectification mode
AssigneeMedtronic, Inc.
InventorsAndrew Fried, Todd V. Smith
Life of this patent
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Abstract
Devices and methods described herein relate to wireless recharging from a distance, and increasing the efficiency of such charging by intelligently or autonomously changing the rectification mode of the implanted device.
Claims20
An external charging device comprising:
- a first antenna configured to output a recharge signal;
- a second antenna configured to transmit and receive telemetry signals;
- a telemetry module configured to receive a level of implantable medical device battery charge current from the second antenna;
- and
- a processor coupled to the telemetry module, the first antenna, and the second antenna, wherein the processor is configured to:
- direct the first antenna to output the recharge signal, and
- direct the second antenna to output instructions to configure the rectification mode of a corresponding implanted device to fullwave or halfwave based upon the level of implantable medical device battery charge current.
4 more elements
A method of wirelessly recharging an implantable medical device, the method comprising:
- (a) emitting a recharging signal at an antenna of a wireless recharger;
- (b) collecting telemetry data at the wireless recharger corresponding to a level of charge current in the implantable medical device;
- and
- (c) transmitting an output instruction from the wireless recharger to the implanted medical device including an instruction for a rectification mode, wherein:
- the output instruction is a fullwave rectification instruction when the charge current is greater than a threshold, and;
- the output instruction is a halfwave rectification instruction when the charge current is less than the threshold.
3 more elements
A system comprising:
- a wireless recharger including an antenna configured to output a recharge signal and a telemetry module configured to receive a level of charge current in a battery;
- an implanted device including:
- a battery;
- a device telemetry module configured to transmit a level of charge current in the battery;
- and
- a processor configured to direct the implanted device to operate in a fullwave rectified wireless signal or a halfwave rectified wireless signal based upon the level of charge current.
3 more elements
Dependencies are inferred from the claim text.