Method and system for wireless charging of implantable medical devices
AssigneeCraniUS LLC
InventorsOwen Friesen, Eleni Daskopoulou, Farooq Akhtar, Vikarie Elliott, Conner Delahanty, John Cai
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Abstract
An RF charging system for implantable medical devices. The RF charging system includes a radio frequency (RF) signal, a first antenna configured to transmit the RF signal, a second antenna configured to receive the RF signal transmitted by the first antenna, tune characteristics of the RF signal, and improve power transfer with impedance matching circuitry, an RF to direct current (DC) converter configured to convert the RF signal of the second antenna into a DC signal, and a battery management circuit configured to receive the DC signal and provide voltage to a battery.
Claims20
A magnetic resonance imaging (MRI) lucent radio frequency (RF) charging system for implantable medical devices, comprising:
- a first antenna configured to transmit an RF signal;
- an MRI lucent medical device housing;
- an MRI lucent second antenna contained in the MRI lucent medical device housing and configured to receive the RF signal transmitted by the first antenna, tune characteristics of the RF signal, and improve power transfer with impedance matching circuitry;
- an RF to direct current (DC) converter configured to convert the RF signal of the second antenna into a DC signal;
- and
- a battery management circuit configured to receive the DC signal and provide voltage to a battery.
A method for wireless charging, comprising:
- modulating a raw power signal to convert the raw power signal to a radio frequency (RF) signal;
- transmitting the RF signal through a first antenna;
- receiving the RF signal with a magnetic resonance imaging (MRI) lucent second antenna that is contained in an MRI lucent medical device housing;
- tuning the characteristics of the RF signal with the second antenna;
- improving the power transfer characteristics of the RF signal with impedance matching circuitry;
- converting the RF signal into a direct current (DC) signal using an RF to DC converter;
- receiving the DC signal on a battery management circuit;
- and
- providing voltage to a battery.
Dependencies are inferred from the claim text.