Leland Stanford Junior University

Neuspera Medical Inc.

Alexander Jueshyan Yeh

Ada Shuk Yan Poon

Yuji Tanabe

John Ho

Sanghoek Kim

Elia Junco

Timothy A Fayram

Milton M Morris

Thomas Burpee Ellsworth, Iii

Hui Zhang

Brad Holinski

Randolph Kerry Armstrong

Gary Shaw

Stephen James Schellenberg

Karl A Deisseroth

Scott Delp

Carl Lance Boling

Timothy Edward Ciciarelli

Shivkumar Sabesan

Logan Grosenick

Shrivats Mohan Iyer

Emily Anne Ferenczi

John S Y Ho

Kate L Montgomery

Vivien Tsao

Robert Turcott

Generally discussed herein are systems, devices, and methods for providing a therapy (e.g., stimulation) and/or data signal using an implantable device. Systems, devices and methods for interacting with (e.g., communicating with, receiving power from) an external device are also provided.

Midfield transmitter systems

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

Described herein are devices, systems, and methods for wireless power transfer utilizing a midfield source and implant. In one variation, a midfield source may be realized by a patterned metal plate composed of one of more subwavelength structures. These midfield sources may manipulate evanescent fields outside a material (e.g., tissue) to excite and control propagating fields inside the material (e.g., tissue) and thereby generate spatially confined and adaptive energy transport in the material (e.g., tissue). The energy may be received by an implanted device, which may be configured for one or more functions such as stimulation, sensing, or drug delivery.

External power devices and systems

Devices, systems, and methods for stimulation therapy

Implantable devices and/or sensors can be wirelessly powered by controlling and propagating electromagnetic waves in a patient's tissue. Such implantable devices/sensors can be implanted at target locations in a patient, to stimulate areas such as the heart, brain, spinal cord, or muscle tissue, and/or to sense biological, physiological, chemical attributes of the blood, tissue, and other patient parameters. The propagating electromagnetic waves can be generated with sub-wavelength structures configured to manipulate evanescent fields outside of tissue to generate the propagating waves inside the tissue. Methods of use are also described.

Wireless midfield systems and methods

Systems, devices, and methods are discussed herein for wirelessly transmitting power and/or data to an implanted device, such as an implanted electrostimulator device. In an example, the subject matter includes a layered transmitter device with multiple conductive planes and excitation features. The transmitter device can be tuned to identify and apply device parameters for efficient wireless communication with a deeply implanted device. The transmitter is generally configured for midfield powering applications by providing signals that give rise to propagating signals inside of body tissue.

Enhanced wireless communication and power transfer between external and implanted devices

Implantable feedthrough assembly

Generally discussed herein are systems, devices, and methods for providing a therapy (e.g., stimulation) and/or data signal using an implantable device. Systems, devices and methods for interacting with (e.g., communicating with, receiving power from) an external device are also provided. A system can include an external power source that propagates a field within tissue and an at least partially implantable device configured to receive the propagated field from the external power source, the implantable device including circuitry, a first antenna electrically coupled to the circuitry, a second antenna electrically coupled to the first antenna, and an electrode electrically connected to the circuitry.

Generally discussed herein are systems, devices, and methods for providing a therapy or data signal using an implantable device. A method of providing intermittent stimulation by a stimulation system can include providing, by an external device of the stimulation system, radio frequency first signals to an implantable device of the stimulation system, the implantable device including an electrode and the first signals causing the implantable device to provide electrical stimulation through the electrode for a first time duration, determining, at the external device, that the implantable device is out of range of a transmission from the external device, determining, at the external device, that the implantable device is within range of the transmission from the external device, and providing, by an external device of the stimulation system, radio frequency second signals to the implantable device of the stimulation system, the second signals causing the implantable device to provide electrical stimulation through the electrode for a third time duration.

Growing community of inventors

Los Altos Hills, CA, United States of America

Alexander Jueshyan Yeh