Implant current controlled battery charging based on temperature
First Claim
1. A method for charging a battery in a medical device, the method comprising the steps of:
- providing a temperature sensor in the medical device;
storing a plurality of temperature measurements obtained from the temperature sensor over a period of time;
analyzing said plurality of temperature measurements to determine historical temperature information; and
adjusting a charging rate of the battery based on the determined historical temperature information to optimize the charging of the battery, wherein the adjusting comprises transitioning the charging rate of the battery between a plurality of different non-zero constant current modes and at least one constant voltage mode.
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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.
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Citations
25 Claims
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1. A method for charging a battery in a medical device, the method comprising the steps of:
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providing a temperature sensor in the medical device; storing a plurality of temperature measurements obtained from the temperature sensor over a period of time; analyzing said plurality of temperature measurements to determine historical temperature information; and adjusting a charging rate of the battery based on the determined historical temperature information to optimize the charging of the battery, wherein the adjusting comprises transitioning the charging rate of the battery between a plurality of different non-zero constant current modes and at least one constant voltage mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for charging a battery in a medical device, the method comprising the steps of:
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providing a battery charging device for charging the battery in the medical device; providing a temperature sensor in the medical device; transmitting a plurality of temperature measurements from the medical device to a battery charging device over time; storing the plurality of temperature measurements in the battery charging device; analyzing said plurality of temperature measurements to determine historical temperature information; and adjusting a charging rate of the battery charging device for charging the battery based on the determined historical temperature information to optimize the charging of the battery within desired temperature constraints, wherein the adjusting comprises transitioning said charging rate of the battery between a plurality of different non-zero constant current modes and at least one constant voltage mode. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A method for charging a battery in a medical device, the method comprising the steps of:
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providing a receiver in the medical device which is implanted in a patient; providing a temperature sensor in the medical device; receiving, via the receiver, a wireless power signal from an external battery charging device; converting the wireless power signal into a battery charge signal including power for recharging the battery; transmitting a plurality of temperature measurements from the medical device to the battery charging device over time; analyzing said plurality of temperature measurements to determine historical temperature information including a temperature trend determined by calculating a rate of change of the plurality of temperature measurements over time; and changing a current of the battery charge signal based on the determined historical temperature information to optimize the charging of the battery within desired temperature constraints, wherein said battery charge signal is changed from a first non-zero current to a second non-zero current that is different from the first non-zero current, and wherein said changing of the current of the battery charge signal is based on the historical temperature information. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25)
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Specification