Battery recharge management for an implantable medical device
First Claim
1. A recharge management system for an implantable medical device having an outer shield comprising in combination:
- (a) a rechargeable power source associated with the implantable medical device;
(b) a recharge coil associated with the implantable device 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 monitoring at least one recharge parameter selected from the group consisting of a temperature of the recharge coil, a temperature of the recharge regulator and a temperature of the outer shield; and
(e) a recharge regulation control unit for regulating the recharge energy delivered to the power source in response to the recharge measurement device.
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Accused Products
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
17 Claims
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1. A recharge management system for an implantable medical device having an outer shield comprising in combination:
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(a) a rechargeable power source associated with the implantable medical device; (b) a recharge coil associated with the implantable device 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 monitoring at least one recharge parameter selected from the group consisting of a temperature of the recharge coil, a temperature of the recharge regulator and a temperature of the outer shield; and (e) a recharge regulation control unit for regulating the recharge energy delivered to the power source in response to the recharge measurement device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of recharging a power source within an implantable medical device having an outer shield, 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 parameter of the implantable medical device in response to the step of recharging, wherein the parameter is selected from the group consisting of a temperature of at least one of the recharge coil, the recharge regulator and the outer shield; and (d) regulating the step of recharging in response to the step of sensing by increasing or decreasing the recharge energy delivered to the power source. - View Dependent Claims (13, 14, 15, 16)
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17. A recharge management system for an implantable medical device having an outer shield, comprising in combination:
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(a) a rechargeable power source within the implantable medical device; (b) circuitry within the implantable device capable of receiving via telemetry recharge energy from an external device and providing the recharge energy to the power source; (c) means for sensing at least one recharge parameter of the implantable medical device selected from the group consisting of a temperature of the recharge coil, a temperature of the recharge regulator and a temperature of the outer shield; and (d) means for regulating the recharge energy delivered to the power source in response to the means for sensing.
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Specification