Patent ID: 11951316
Assignee: BLUEWIND MEDICAL LTD
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC A  H | IPC A  H

Claim 0:
1. Apparatus for use with a medical implant that comprises a receiving coil, the apparatus comprising:
a flexible housing configured to be placed against skin of a subject;
a flexible transmitting coil disposed in the housing;
control circuitry configured to transmit power to the medical implant by driving a current through the transmitting coil that induces an induced current in the receiving coil;
a sensor coupled to the control circuitry, the sensor configured to determine an extent of divergence of (a) a resonance frequency of the transmitting coil when the transmitting coil is flexed from (b) a nominal resonance frequency of the transmitting coil, occurring in the absence of any forces applied to the transmitting coil, and configured to output a signal according to the determination;
one or more electrical components, coupled to the control circuitry and configured to tune the resonance frequency of the transmitting coil in response to the determination of the sensor; and
a plurality of switches, each switch coupled to a respective one of the electrical components,
the control circuitry being configured to apply a respective DC voltage to each switch, and
the switches comprising transistors having respective capacitances that are dependent on the respective DC voltage applied to each switch.