# US 2023/0405341 A1 · Relay module for implant > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0405341 A1 - Document ID: US20230405341A1 - Status: Published application - Kind: A1 - Application number: 18/238,700 - Filed: 2023-08-28 - Published: 2023-12-21 - Earliest claimed: 2011-09-15 - Assignees: Stimwave Technologies Incorporated - Applicants: Stimwave Technologies Incorporated - Inventors: Laura Tyler Perryman; Chad Andresen - Web page: https://patentgrep.com/patent/US20230405341A1 ## CPC - A61N 1/37229: {Shape or location of the implanted or external antenna} - A61N 1/36125: {Details of circuitry or electric components} - A61N 1/37223: {Circuits for electromagnetic coupling} - A61N 1/3787: {from an external energy source} - A61N: ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY (measurement of bioelectric currents A61B; surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body A61B18/00; anaesthetic apparatus in general A61M; incandescent lamps H01K; infrared radiators for heating H05B) ## Abstract An implementation provides a system that includes: a control module including a first antenna, the control module configured to generate a first radio frequency (RF) signal and transmit the first RF signal using the first antenna; an implantable lead module including a second antenna and at least one electrode configured to stimulate excitable tissue of a subject; and a relay module configured to receive the first RF signal; generate a second RF signal based on the first RF signal, the second RF signal encoding a stimulus waveform to be applied by the at least one electrodes of the implantable lead module to stimulate the excitable tissue of the subject; and transmit the second RF signal to the implantable lead module. ## Claims ### Claim 1 (canceled) ### Claim 2 A system comprising: a wireless medical device configured to be implanted inside a patient and to be remotely powered by energy in electromagnetic signals via electrical radiative coupling such that the wireless medical device does not require electrical power from any other source to operate; a relay device configured to direct electromagnetic signals to the wireless medical device; and a control device configured to: generate a first electromagnetic signal for the wireless medical device; and direct the first electromagnetic signal to the relay device, wherein the wireless medical device is powered based on the first electromagnetic signal. ### Claim 3 (depends on 2) The system of claim 2, wherein the relay device includes at least one antenna and the first electromagnetic signal is transmitted via electrical radiative coupling and without inductive coupling to the relay device. ### Claim 4 (depends on 2) The system of claim 2, wherein the relay device is a layered structure that comprises: a receive antenna layer, configured to receive the first electromagnetic signal transmitted by the control device; at least one dielectric insulating layer; and a transmit antenna layer, separated from the receive antenna layer by the dielectric insulating layer, the transmit antenna layer configured to transmit a second electromagnetic signal based on the first electromagnetic signal to the wireless medical device to power the wireless medical device. ### Claim 5 (depends on 4) The system of claim 4, wherein the receive antenna layer includes one of a dipole antenna and a patch antenna, and the transmit antenna layer includes one of a dipole antenna and a patch antenna. ### Claim 6 (depends on 2) The system of claim 2, wherein the relay device comprises: a receive antenna configured to receive the first electromagnetic signal transmitted by the control device; and a transmit antenna configured to transmit a second electromagnetic signal based on the first electromagnetic signal to the wireless medical device to power the wireless medical device. ### Claim 7 (depends on 6) The system of claim 6, wherein the first electromagnetic signal and the second electromagnetic signal have respective carrier frequencies that are within a range of about 800 MHz to about 6 GHz. ### Claim 8 (depends on 7) The system of claim 7, wherein the respective carrier frequencies of the first electromagnetic signal and the second electromagnetic signal are different. ### Claim 9 (depends on 2) The system of claim 2, wherein the relay device comprises a flexible circuit that includes a rectifier and an energy reservoir, wherein the rectifier converts the first electromagnetic signal to electrical energy that is stored in the energy reservoir. ### Claim 10 (depends on 2) The system of claim 2, wherein the relay device is configured to be implanted inside the patient. ### Claim 11 (depends on 2) The system of claim 2, wherein the relay device is configured to be placed exterior to the patient. ### Claim 12 (depends on 2) The system of claim 2, wherein the relay device is configured to be placed on skin of the patient. ### Claim 13 (depends on 2) The system of claim 2, wherein the relay device is configured to be placed on an item that is configured to be worn by the patient. ### Claim 14 (depends on 2) The system of claim 2, wherein the relay device is remotely powered by energy in the first electromagnetic signal. ### Claim 15 A method for facilitating neurophysiological treatment of a patient, the method comprising: generating, at a control device outside of a patient, an electromagnetic signal; transmitting, from the control device, the electromagnetic signal to a relay device; obtaining, at a wireless medical device implanted in the patient, energy via electrical radiative coupling based on the electromagnetic signal, the wireless medical device being powered by the energy such that the wireless medical device does not require electrical power from any other source to operate; generating, by the wireless medical device, a stimulation waveform using the energy; and applying, by the wireless medical device, the stimulation waveform to excitable tissue of the patient. ### Claim 16 (depends on 15) The method of claim 15, further comprising: obtaining, at the relay device, the electromagnetic signal; transmitting, by the relay device, a second electromagnetic signal based on the electromagnetic signal; and receiving, by the wireless medical device, the second electromagnetic signal, wherein the wireless medical device obtains energy from the second electromagnetic signal. ### Claim 17 (depends on 15) The method of claim 15, wherein the relay device is implanted in the patient. ### Claim 18 (depends on 15) The method of claim 15, further comprising: transmitting, from the control device, a second electromagnetic signal to the relay device; and transmitting, from the relay device, a third electromagnetic signal to the wireless medical device, wherein the wireless medical device generates the stimulation waveform based on the third electromagnetic signal. ### Claim 19 (depends on 18) The method of claim 18, wherein the second electromagnetic signal carries the stimulation waveform. ### Claim 20 (depends on 18) The method of claim 18 further comprising configuring polarity of at least one electrode of the wireless medical device based on the third electromagnetic signal that encodes polarity setting information of the at least one electrode. ### Claim 21 (depends on 15) The method of claim 15, further comprising: obtaining, at the relay device, the electromagnetic signal; and obtaining, at the relay device, second energy via electrical radiative coupling based on the electromagnetic signal, the relay device being powered by the second energy such that the relay device does not require electrical power from any other source to operate.