Closed loop long range recharging
First Claim
1. A charging system for an implantable medical device (IMD) having a secondary coil, comprising:
- a primary coil;
a storage device storing information describing a regulatory requirement;
a sensor sensing a condition during operation of the charging system indicating whether the regulatory requirement is being met; and
a modulation circuit operatively coupled to the primary coil, the sensor, and the storage device, wherein the modulation circuit is adapted to drive the primary coil in a manner determined by the regulatory requirement and the sensed condition when the primary coil is in proximity to the secondary coil.
1 Assignment
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Accused Products
Abstract
A charging system for an implantable medical device having a secondary coil. The charging system includes an external power source having at least one primary coil, a modulation, circuit operatively coupled to the primary coil and capable of driving it in a manner characterized by a charging parameter, and a sensor in communication with the modulation circuit and capable of sensing a condition indicating a need to adjust the charging parameter during a charging process. The parameter may be varied so that data sensed by the sensor meets a threshold requirement, which may be based on a patient preference, a government regulation, a recommendation promulgated by a health authority and/or a requirement associated with another device carried by the patient. In one embodiment, the regulation dictates maximum magnetic field exposure, and a field limiting circuit is employed to adjust the charging process.
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Citations
35 Claims
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1. A charging system for an implantable medical device (IMD) having a secondary coil, comprising:
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a primary coil; a storage device storing information describing a regulatory requirement; a sensor sensing a condition during operation of the charging system indicating whether the regulatory requirement is being met; and a modulation circuit operatively coupled to the primary coil, the sensor, and the storage device, wherein the modulation circuit is adapted to drive the primary coil in a manner determined by the regulatory requirement and the sensed condition when the primary coil is in proximity to the secondary coil. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system, comprising:
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an implantable medical device having a secondary coil; a primary coil to inductively couple to the secondary coil; a storage device to store information describing a regulatory requirement indicative of magnetic field strength; and a circuit coupled to the primary coil and to the storage device, wherein the circuit is adapted to control a manner in which the primary coil is energized based on a determination of whether the regulatory requirement is being met. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for use with an implantable medical device, comprising:
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storing in a programmable storage device data that describes a regulatory requirement controlling energizing a secondary coil of the implantable medical device; using a primary coil to energize the secondary coil; sensing a condition associated with energizing the secondary coil; and modifying a manner of energizing the primary coil based on whether the regulatory requirement is met as determined by the sensed condition. - View Dependent Claims (21, 22, 23, 24, 25)
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26. A system, comprising:
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a primary coil to recharge a power source of an implantable medical device (IMD) implanted in a patient, the IMD being in proximity to one or more additional medical devices carried by the patient; a storage device to store information describing a regulatory requirement limiting a condition experienced by at least one of the additional medical devices during the recharge session; and a circuit coupled to the primary coil and to the storage device, wherein the circuit is adapted to control a manner in which the primary coil is energized based on a determination of whether the regulatory requirement is being met. - View Dependent Claims (27, 28, 29, 30)
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31. A charging system for an implantable medical device (IMD) having a secondary coil, comprising:
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a primary coil; a storage device adapted to store information describing a regulatory requirement and further to store patient preference data associated with a patient preference; a sensor adapted to sense a condition during operation of the charging system indicating whether the regulatory requirement is being met and further indicating whether the patient preference has been satisfied; and a modulation circuit operatively coupled to the primary coil, the sensor, and the storage device, wherein the modulation circuit is adapted to drive the primary coil in a manner determined by the regulatory requirement, the patient preference and the sensed condition when the primary coil is in proximity to the secondary coil. - View Dependent Claims (32)
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33. A method for use with an implantable medical device, comprising:
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storing in a programmable storage device data that describes a regulatory requirement controlling energizing a secondary coil of the implantable medical device and data indicative of a patient preference; using a primary coil to energize the secondary coil; sensing a condition associated with energizing the secondary coil; and modifying a manner of energizing the primary coil based on whether the regulatory requirement is met and whether the patient preference is being satisfied as determined by the sensed condition. - View Dependent Claims (34)
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35. A system, comprising:
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an implantable medical device having a secondary coil; a primary coil to inductively couple to the secondary coil; a storage device adapted to store information describing a regulatory requirement and data indicative of a patient preference; and a circuit coupled to the primary coil and to the storage device, wherein the circuit is adapted to control a manner in which the primary coil is energized based on a determination of whether the regulatory requirement is being met and whether the patient preference is being satisfied.
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Specification