Battery recharge management for implantable medical device
First Claim
1. A recharge management system for an implantable medical device, comprising in combination:
- (a) a rechargeable power source operatively coupled with the implantable medical device;
(b) a recharge coil operatively coupled with the implantable medical device and being capable of receiving via telemetry recharge energy from an external device;
(c) a recharge regulator capable of receiving the recharge energy from the recharge coil and providing the recharge energy to the rechargeable power source;
(d) a recharge measurement device to monitor a recharge parameter associated with the recharge management system; and
(e) a recharge regulation control unit being capable of regulating the recharge energy provided to the power source by increasing the recharge energy in response to the recharge parameter.
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Abstract
An implantable medical device having an implantable power source such as a rechargeable lithium ion battery. The implantable medical device includes a recharge module that regulates the recharging process of the implantable power source using closed-loop feedback control. The recharge module includes a recharge regulator, a recharge measurement device monitoring at least one recharge parameter, and a recharge regulation control unit for regulating the recharge energy delivered to the power source in response to the recharge measurement device. The recharge module adjusts the energy provided to the power source to ensure that the power source is being recharged under safe levels.
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Citations
35 Claims
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1. A recharge management system for an implantable medical device, comprising in combination:
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(a) a rechargeable power source operatively coupled with the implantable medical device; (b) a recharge coil operatively coupled with the implantable medical device and being capable of receiving via telemetry recharge energy from an external device; (c) a recharge regulator capable of receiving the recharge energy from the recharge coil and providing the recharge energy to the rechargeable power source; (d) a recharge measurement device to monitor a recharge parameter associated with the recharge management system; and (e) a recharge regulation control unit being capable of regulating the recharge energy provided to the power source by increasing the recharge energy in response to the recharge parameter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of recharging a rechargeable power source within an implantable medical device having a recharge regulator, comprising the steps of:
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(a) receiving recharge energy within the implantable medical device from an external energy source; (b) recharging the power source with the recharge energy; (c) sensing at least one recharge parameter of the implantable medical device in response to the step of recharging, wherein the parameter is selected from the group consisting of an input voltage to the recharge regulator, an input voltage to the power source, an output voltage from the recharge regulator, an input current to the recharge regulator, an input current to the power source, an output current from the recharge regulator, a power source voltage and a power source charge; and (d) regulating with an implanted circuit the step of recharging in response to the step of sensing by increasing the recharge energy in response to the recharge parameter. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. (canceled)
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24. (canceled)
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25. A recharge management system for an implantable medical device, comprising in combination:
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an external device providing a source of recharge energy; a rechargeable power source operatively coupled with the implantable medical device; a recharge coil operatively coupled with the implantable medical device and being capable of receiving via telemetry recharge energy from the external device; a recharge regulator capable of receiving the recharge energy from the recharge coil and providing the recharge energy to the rechargeable power source; a recharge measurement device to monitor a recharge parameter associated with the recharge management system; and a recharge regulation control unit being capable of regulating the recharge energy provided to the power source by increasing the recharge energy in response to the recharge parameter. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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Specification