IMPLANT CURRENT CONTROLLED BATTERY CHARGING BASED ON TEMPERATURE
First Claim
1. A method for wirelessly charging a battery in an implantable medical device, the method comprising the steps of:
- providing a receiver in the implantable medical device;
providing a temperature sensor in the implantable medical device;
receiving, via the receiver, a wireless power signal from an external charger;
converting the wireless power signal into a battery charge signal including power for recharging the battery;
sensing a temperature of the implantable medical device with the temperature sensor; and
changing a current of the battery charge signal from a first non-zero current to a second non-zero current that is different from the first non-zero current, wherein said changing of the current of the battery charge signal is based on the temperature sensed by the temperature sensor.
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Accused Products
Abstract
A method for wirelessly charging a battery in an implantable medical device including the steps of: providing a receiver in the implantable medical device and providing a temperature sensor in the implantable medical device. The method also includes receiving, via the receiver, a wireless power signal from an external charger and converting the wireless power signal into a battery charge signal including power for recharging the battery. The method yet also includes sensing a temperature of the implantable medical device with the temperature sensor. The method further includes changing a current of the battery charge signal from a first non-zero current to a second non-zero current that is different from the first non-zero current. Changing of the current of the battery charge signal is based on the temperature sensed by the temperature sensor.
37 Citations
22 Claims
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1. A method for wirelessly charging a battery in an implantable medical device, the method comprising the steps of:
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providing a receiver in the implantable medical device; providing a temperature sensor in the implantable medical device; receiving, via the receiver, a wireless power signal from an external charger; converting the wireless power signal into a battery charge signal including power for recharging the battery; sensing a temperature of the implantable medical device with the temperature sensor; and changing a current of the battery charge signal from a first non-zero current to a second non-zero current that is different from the first non-zero current, wherein said changing of the current of the battery charge signal is based on the temperature sensed by the temperature sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for wirelessly charging a battery in an implantable medical device, the method comprising the steps of:
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providing a receiver in the implantable medical device; providing a temperature sensor in the implantable medical device; receiving, via the receiver, a wireless power signal from an external charger; converting the wireless power signal into a battery charge signal including power for recharging the battery; sensing temperature information of the implantable medical device with the temperature sensor; and controlling a current of the battery charge signal based on the temperature information sensed by the temperature sensor, such that when the temperature is less than a low temperature threshold the battery charge signal is provided at a first non-zero current, and when the temperature is greater than a high temperature threshold the battery charge signal is provided at a second non-zero current that is less than the first non-zero current.
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18. A method for wirelessly charging a battery in an implantable medical device, the method comprising the steps of:
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providing a receiver in the implantable medical device; providing a temperature sensor in the implantable medical device; receiving, via the receiver, a wireless power signal from an external charger; converting the wireless power signal into a battery charge signal including power for recharging the battery; sensing temperature information of the implantable medical device with the temperature sensor; obtaining historical temperature information based on the temperature information sensed by the temperature sensor over a period of time; and using a charge controller for selecting a current of the battery charge signal, using a control algorithm, based on the temperature information and historical temperature information, such that, the temperature is prevented from exceeding a charging temperature threshold. - View Dependent Claims (19)
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20. A method for wirelessly charging a battery in an implantable medical device, the method comprising the steps of:
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providing a receiver in the implantable medical device; providing a temperature sensor in the implantable medical device; receiving, via the receiver, a wireless power signal from an external charger; converting the wireless power signal into a battery charge signal including power for recharging the battery; sensing a temperature of the implantable medical device with the temperature sensor; and controlling a current of the battery charge signal to maintain the temperature at a target temperature. - View Dependent Claims (21)
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22. A method of providing a neurostimulation therapy to a patient, comprising the steps of:
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providing an implantable medical device having a battery that recharging and being implanted in a patient; using said implantable medical device for driving at least one electrode implanted in the patient to stimulate at least one nerve of the patient; and wirelessly charging the battery in the implantable medical device, said wireless charging including the steps of; providing a receiver in the implantable medical device; providing a temperature sensor in the implantable medical device; receiving, via the receiver, a wireless power signal from an external charger; converting the wireless power signal into a battery charge signal including power for recharging the battery; sensing a temperature of the implantable medical device with the temperature sensor; and changing a current of the battery charge signal from a first non-zero current to a second non-zero current that is different from the first non-zero current, wherein said changing of the current of the battery charge signal is based on the temperature sensed by the temperature sensor.
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Specification