INDUCTIVELY RECHARGEABLE EXTERNAL ENERGY SOURCE, CHARGER, SYSTEM AND METHOD FOR A TRANSCUTANEOUS INDUCTIVE CHARGER FOR AN IMPLANTABLE MEDICAL DEVICE
First Claim
1. A method of transcutaneously transferring energy from an external power source to an implantable medical device, comprising:
- positioning an antenna in proximity of the implantable medical device;
laterally adjusting a position of a core of the antenna relative to the implantable medical device while the antenna is maintained substantially stationary;
adjusting a frequency of transmission of a power source; and
driving the antenna with the power source at the adjusted frequency to transfer energy transcutaneously to the implantable medical device.
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Accused Products
Abstract
A mechanism for transferring energy from an external power source to an implantable medical device is disclosed. An antenna is positioned in proximity of the implantable medical device. The position of a core of the antenna is adjusted relative to the implantable medical device while the antenna is maintained substantially stationary. A frequency of transmission of a power source is adjusted, and the antenna is driven at the adjusted frequency to transfer energy transcutaneously to the implantable medical device. In one embodiment, the frequency of transmission is selected based on an amplitude of a signal in the antenna.
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Citations
28 Claims
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1. A method of transcutaneously transferring energy from an external power source to an implantable medical device, comprising:
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positioning an antenna in proximity of the implantable medical device; laterally adjusting a position of a core of the antenna relative to the implantable medical device while the antenna is maintained substantially stationary; adjusting a frequency of transmission of a power source; and driving the antenna with the power source at the adjusted frequency to transfer energy transcutaneously to the implantable medical device. - 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 operationally coupled to receive energy from a secondary coil; an antenna adapted to be positioned at a selected location relative to the secondary coil; an external power source coupled to generate a signal in the antenna at any selected frequency that is within a predetermined frequency range to transcutaneously transfer energy from the antenna to the secondary coil when the implantable medical device is implanted in a patient; and a core selectably positionable relative to the antenna to focus the energy while the antenna is in the selected location. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A system to transcutaneously transfer power to an implantable medical device, comprising:
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an antenna adapted to be positioned at a selected location relative to the implantable medical device; an adjustable power source coupled to drive the antenna at a selected frequency that is selected to increase efficiency of energy transfer from the antenna to the implantable medical device; and a core movably coupled to the antenna and adapted to be laterally positionable relative to the implantable medical device while the antenna is maintained at the selected location, the core to focus the energy transferred from the antenna to the implantable medical device in a selectable manner. - View Dependent Claims (22, 23, 24, 25, 26)
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27. A system, comprising:
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an implantable medical device for providing a therapy to a patient, the implantable medical device having a secondary coil and a rechargeable power source; an external charging system, comprising; primary coil; a variable power source adapted to generate a signal in the primary coil that is of a selectable frequency chosen to optimize an amplitude of the signal; and a moveable core positionable relative to the primary coil and to the secondary coil and adapted to focus magnetic flux generated by the signal in the primary coil, whereby efficiency of energy transfer between the external charging system and the implantable medical device is increased. - View Dependent Claims (28)
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Specification