Wireless implantable power receiver system and methods
A method and system is presented for an implantable wireless power receiver for use with a medical stimulation or monitoring device. The receiver receives transmitted energy through one or more non-inductive antenna(s), utilizes microelectronics to perform rectification of the received signal for generation of a DC power supply to power an implantable device, and may also utilize microelectronics to provide parameter settings to the device, or stimulating or other waveforms to a tissue.
1. A wireless implantable receiver for use with an implantable medical device, the wireless implantable receiver comprising:
a dipole antenna configured to:
receive, via electrical radiative coupling and without inductive coupling, electromagnetic radiation radiated from outside a subject in which the wireless implantable receiver is implanted, and
convert the electromagnetic radiation to electrical energy,
wherein the antenna has a length ranging from 100 microns to 10 centimeters;
circuitry coupled to the antenna and configured to condition the electrical energy;
a housing configured to house the antenna and the circuitry, the housing sized and shaped for passing through an inner lumen of a needle no larger than 13 gauge; and
at least one wire coupled to the circuitry and extending from the housing, the at least one wire configured to be coupled to the implantable medical device and to provide the conditioned electrical energy to the implantable medical device thereby providing electrical power to the implantable medical device that is used to power the implantable medical device,
wherein the wireless implantable receiver operates independently from the implantable medical device and is separable from the implantable medical device.
2. The wireless implantable receiver of claim 1 , wherein the implantable medical device does not require electrical power from any other source to operate when powered by the wireless implantable receiver.
3. The wireless implantable receiver of claim 2 , wherein the circuitry comprises a bridge rectifier including a first parallel pair of diodes connected anode-to-anode in series and a second pair of diodes connected cathode-to-cathode in series.
4. The wireless implantable receiver of claim 1 , wherein the circuitry comprises a bridge rectifier including a first parallel pair of diodes connected anode-to-anode in series and a second pair of diodes connected cathode-to-cathode in series.
5. The wireless implantable receiver of claim 1 , wherein the antenna is further configured to receive a telemetry signal that includes one or more parameters for the implantable medical device.
6. The wireless implantable receiver of claim 1 , wherein the antenna is further configured to transmit a telemetry signal that includes one or more parameters obtained from the implantable medical device.
7. A medical device system, comprising:
an implantable medical device; and
a wireless implantable receiver comprising:
a dipole antenna configured to:
receive, via electrical radiative coupling and without inductive coupling, electromagnetic radiation radiated from outside a subject in which the wireless implantable receiver is implanted, and
convert the electromagnetic radiation to electrical energy,
wherein the antenna has a length ranging from 100 microns to 10 centimeters;
circuitry coupled to the antenna and configured to condition the electrical energy;
a housing configured to house the antenna and the circuitry, the housing sized and shaped for passing through an inner lumen of a needle no larger than 13 gauge; and
at least one wire coupled to the circuitry and extending from the housing, the at least one wire configured to be coupled to the implantable medical device and to provide the conditioned electrical energy to the implantable medical device thereby providing electrical power to the implantable medical device that is used to power the implantable medical device,
wherein the wireless implantable receiver operates independently from the implantable medical device and is separable from the implantable medical device.
8. The medical device system of claim 7 , wherein the implantable medical device does not require electrical power from any other source to operate when powered by the wireless implantable receiver.
9. The medical device system of claim 8 , wherein the circuitry comprises a bridge rectifier including a first parallel pair of diodes connected anode-to-anode in series and a second pair of diodes connected cathode-to-cathode in series.
10. The medical device system of claim 7 , wherein the antenna is further configured to receive a telemetry signal that includes one or more parameters for the implantable medical device.
11. The medical device system of claim 7 , wherein the antenna is further configured to transmit a telemetry signal that includes one or more parameters obtained from the implantable medical device.
12. The medical device system of claim 7 , wherein the implantable medical device includes one or more sensors and the wireless implantable receiver provides power to the one or more sensors.
13. A method comprising:
electrically coupling an implantable wireless receiver to an implantable medical device via at least one wire coupled to circuitry housed in a housing of the implantable wireless receiver;
receiving electromagnetic radiation by an antenna of the implantable wireless receiver via electrical radiative coupling and without inductive coupling to obtain electrical energy, the electromagnetic radiation radiated from outside a subject in which the wireless implantable receiver and implantable medical device are implanted, and the antenna is coupled to the circuitry and housed in the housing; and
conditioning, by the circuitry, the electrical energy for distribution to the implantable medical device thereby providing electrical power to the implantable medical device that is used to power the implantable medical device, wherein the electrical power is provided to the implantable medical device without receiving electrical power from a battery in the implantable medical device and without receiving electrical power from a battery in the wireless implantable receiver,
wherein the wireless implantable receiver operates independently from the implantable medical device and is separable from the implantable medical device, and
the housing is sized and shaped for passing through an inner lumen of a needle no larger than 13 gauge.
14. The method of claim 13 , further comprising;
receiving a telemetry signal via the antenna;
converting the telemetry signal into a parameter input for the implantable medical device; and
delivering the parameter input to the implantable medical device.
15. The method of claim 13 , further comprising:
converting the electromagnetic radiation into an electrical waveform suitable for tissue simulation; and
delivering the electrical waveform to the implantable medical device.