Inductively rechargeable external energy source, charger, system and method for a transcutaneous inductive charger for an implantable medical device
First Claim
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1. A system, comprising:
- an implantable medical device operationally coupled to receive energy from a secondary coil;
an antenna having a major plane and an axis orthogonal to the major plane, 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 laterally movable in order to reposition the core with respect to the axis of the antenna to focus the energy while the antenna is in the selected location.
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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.
129 Citations
11 Claims
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1. A system, comprising:
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an implantable medical device operationally coupled to receive energy from a secondary coil; an antenna having a major plane and an axis orthogonal to the major plane, 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 laterally movable in order to reposition the core with respect to the axis of the antenna to focus the energy while the antenna is in the selected location. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification