Neuspera Medical Inc.

Stephen James Schellenberg

Alexander Jueshyan Yeh

Elia Junco

Thomas Burpee Ellsworth, Iii

Timothy A Fayram

Milton M Morris

Carl Lance Boling

Shivkumar Sabesan

Brad Holinski

Hui Zhang

Alexander Yeh

Iii Ellsworth Thomas Burpee

Systems, devices, and methods discussed herein include wireless midfield transmitters and implantable receiver devices. A midfield transmitter can be configured to provide signals outside of tissue that give rise to propagating signals inside of tissue. The present subject matter includes a protection circuit for a transmitter device, a layered transmitter device, an implantable receiver device, implantation and extraction methods, test and assembly methods, and the like. In an example, a protection circuit includes a first control circuit to receive an RF drive signal and conditionally provide an output signal to an antenna. A second control circuit can generate a control signal based on the antenna output signal and/or information about the RF drive signal. A gain circuit can provide the RF drive signal to the first control circuit. The gain circuit can change an amplitude of the RF drive signal based on the control signal from the second control circuit.

Midfield power source for wireless implanted devices

Systems, devices, and methods discussed herein can be for validating a position of a wirelessly powered electrostimulation device while the device is implanted in body tissue. A method can include situating the electrostimulation device in tissue and before an affixation mechanism of the electrostimulation device is deployed to maintain an implanted position of the electrostimulation device, and while electrodes of the device are in contact with the tissue, performing electrical testing of the electrostimulation device to determine whether the electrostimulation from the electrostimulation device evokes a specified response from the body that contains the tissue.

Wireless implantable device position validation in situ

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Aptos, CA, United States of America

Stephen James Schellenberg