Inductively rechargeable external energy source, charger, system and method for a transcutaneous inductive charger for an implantable medical device
First Claim
1. A medical system, comprising:
- an implantable medical device;
an external device configured to transcutaneously couple energy into the implantable medical device;
a sensor carried by the external device and configured to measure a temperature generated by the external device during coupling of the energy into the implantable medical device; and
a control circuit configured to compare the measured temperature to a programmable limit and to control the temperature based on the comparison.
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Abstract
A mechanism for transferring energy from an external power source to an implantable medical device is disclosed. A sensor may be used to measure a parameter that correlates to a temperature of the system that occurs during the transcutaneous coupling of energy. For example, the sensor may measure temperature of a surface of an antenna of the external power source. The measured parameter may then be compared to a programmable limit. A control circuit such as may be provided by the external power source may then control the temperature based on the comparison. The programmable limit may be, for example, under software control so that the temperature occurring during transcutaneous coupling of energy may be modified to fit then-current circumstances.
70 Citations
22 Claims
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1. A medical system, comprising:
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an implantable medical device; an external device configured to transcutaneously couple energy into the implantable medical device; a sensor carried by the external device and configured to measure a temperature generated by the external device during coupling of the energy into the implantable medical device; and a control circuit configured to compare the measured temperature to a programmable limit and to control the temperature based on the comparison. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A medical system, comprising:
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an implantable medical device; an external device configured to transcutaneously couple energy into the implantable medical device, the external device comprising a control circuit; and a sensor carried by the external device and configured to measure an indication of a temperature generated by the external device during coupling of the energy into the implantable medical device, and wherein the control circuit is configured to compare the measured indication of the temperature to a programmable limit and to control the transcutaneous coupling of energy based on the comparison. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. A medical system, comprising:
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implantable medical means for utilizing energy delivered transcutaneously; external means for transcutaneously delivering the energy to the implantable medical means; sensor means carried by the external means, the sensor means for measuring an indication of a temperature generated by the delivery of energy to the implantable medical means; and wherein the external means further comprises means for comparing the measured indication of the temperature to a programmable limit and for controlling the transcutaneous delivery of energy into the implantable medical means to control the measured indication of the temperature.
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22. A medical system, comprising:
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an implantable medical device; an external device configured to transcutaneously provide energy to the implantable medical device; a sensor carried by the external device and configured to measure a temperature of the external device while the external device is providing energy to the implantable medical device; and a control circuit configured to compare the measured temperature to a programmable limit and to control the temperature based on the comparison.
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Specification