Verily Life Sciences LLC

You Zou

Peng Cong

Jiang Zhu

Stephen O'Driscoll

Sean Korhummel

Ganesh Balachandran

Alireza Dastgheib

Kannan Aryaperumal Sankaragomathi

Systems and methods for active charge-balancing for high frequency neural stimulation are disclosed. One illustrative method described herein includes: applying, through a pair of electrodes electrically coupled to a bundle of nerve fibers during a stimulation phase of a neural stimulation procedure, a first current to the bundle of nerve fibers; applying, through the pair of electrodes during a recovery phase of the neural stimulation procedure, a second current to the bundle of nerve fibers, the first current and the second current having opposite polarities; determining sampled voltages between the pair of electrodes during the stimulation phase, during the recovery phase, or between the stimulation phase and the recovery phase; determining a charge buildup in the bundle of nerve fibers based on the sampled voltages; applying, through the pair of electrodes during the stimulation phase or during the recovery phase, a delta current to the bundle of nerves based on the sampled voltages to minimize the charge build up.

Systems and methods for active charge-balancing for high-frequency neural stimulation

Systems and methods for vibration-based communication disclosed. In one embodiment, a system includes: a motion sensor configured to detect vibrations from a remote device; a processor coupled to the motion sensor and configured to: receive signals from the motion sensor; and activate a network connection based on signals from the motion sensor.

Systems and methods for vibration-based communication

The present disclosure relates to computerized systems and methods for determining the location and orientation of implanted devices. Consistent with some embodiments, power levels of near-field signals are backscattered from an implanted device. The backscattered near-field signals may be detected by an ex-vivo antenna array. The determined power levels may be used to identify candidate location and orientation combinations based on a data set. The data set may be generated by calibrating the antenna array to the implanted device. A candidate location and orientation combination among the identified candidate combinations may be selected as the location and orientation of the implanted device.

Systems and methods for determining the location and orientation of implanted devices

One example device having a variable impedance matching network includes a flexible substrate configured to flex in at least an X dimension and a Y dimension, wherein the X and Y dimensions are orthogonal and coplanar with a surface of the flexible substrate; an antenna formed on the flexible substrate, the antenna deformable in at least one of the X or Y dimensions, wherein an inductance ('L') of the antenna varies based on a flexing of the flexible substrate in the at least one of the X or Y dimensions, an impedance matching network formed on the flexible substrate and coupled to the antenna, the impedance matching network deformable in the at least one of the X or Y dimensions, and wherein a capacitance ('C') or inductance (&#x201c;L&#x201d;) of the impedance matching network is configured to vary (i) based on the flexing of the flexible substrate in the at least one of the X or Y dimensions and a separation between two portions of the impedance matching network, and (ii) in proportion to the varying of Lto maintain a substantially constant impedance of the combination of the impedance matching network and the antenna.

Variable impedance matching networks for stretchable antennas

Systems are provided for a wireless system-on-chip (SoC) with integrated antenna, power harvesting, and biosensors. An illustrative SoC can have a dimension of 200 &#x3bc;m&#xd7;200 &#x3bc;m&#xd7;100 &#x3bc;m to allow painless injection. Such small device size is enabled by: a 13 &#x3bc;m&#xd7;20 &#x3bc;m 1 nA current reference, optical clock recovery, low voltage inverting dc-dc to enable use of higher quantum efficiency diodes, on-chip resonant antenna, and an array-scanning reader.

System of injectable fully-monolithic wireless bio-sensing

A reader device includes an array of antenna coils configured to electromagnetically couple with devices implanted beneath or within skin of a human body. An implanted device can include a loop antenna or other means configured to couple with at least one antenna coil of the reader device to receive radio frequency energy from the reader device. The antenna coil array is configured to mount to the skin surface to improve the coupling between the implanted device and coils of the array. Further, the reader device is configured to select two or more antenna coils of the array and to operate the selected antenna coils to emit radio frequency power at respective amplitudes and relative phases to provide radio frequency power to the implanted device while increasing efficiency of the power transfer and reducing the exposure of the skin to radio frequency energy.

Growing community of inventors

Redwood City, CA, United States of America

You Zou