Alfred E. Mann Foundation for Scientific Research

Brian R Dearden

James H Wolfe

Brian Michael Shelton

Siegmar Schmidt

Manish Khemani

Harshit R Suri

Gregory F Molnar

Glen A Griffith

Joseph L Calderon

William A Dai

George S Goding, Jr

Alanie Atyabi

Desmond B Keenan

John Charles Gord

Charles L Byers

Guangqiang Jiang

Daniel Rodriguez

Leslie G Farkas

Justin Cheng-Tsu Loo

Brian M Shelton

Neil Hamilton Talbot

Edward K F Lee

Boon Khai Ng

William Andrew Brandt

David L Hankin

John G Petrovich

Daniel R Merrill

Edward KF Lee

Morten Hansen

A wireless power transfer system includes a wireless power transfer device configured to determine a magnetic field, from among a plurality of directionally different potential magnetic fields that the wireless power transfer device is configured to generate, that has, at a receiver coil of an electronic device, a direction aligned with the receiver coil.

Method and apparatus for pre-alignment of an automatically aligning magnetic field system

A wireless power transfer system includes a wireless power transfer device. The wireless power transfer device includes a first transmitting coil oriented along a first axis; a second transmitting coil on the first transmitting coil and oriented along a second axis different from the first axis; and a nonmagnetic material magnetically decoupling the first transmitting coil from the second transmitting coil in an area of overlap between the first and second transmitting coils.

Automatically-aligning magnetic field system

An electrode that includes an elongate lead body and a nerve cuff. The nerve cuff may include a biologically compatible, elastic, electrically insulative cuff body configured to be circumferentially disposed around a nerve, first and second relatively wide electrically conductive contacts carried by the cuff body that are spaced from one another in the length direction and that extend in the width direction to such an extent that they extend completely around the cuff body inner lumen when the cuff body is in the pre-set furled shape, and a plurality of relatively narrow electrically conductive contacts carried by the cuff body that are spaced from one another in the width direction and are located between the first and second relatively wide electrically conductive contacts.

Electrode leads having multi-application nerve cuffs and associated systems and methods

Skin patch sensors for monitoring and/or affecting body parameters, with alignment, positioning and attachment using magnets. The repeated use of releasable adhesive layers to retain skin patch sensors on skin can cause skin irritation, which can be reduced by rotating a skin patch between attachment times around a magnetically coupled pivot point. Skin patch sensors can be configured with internal coils to inductively couple to external power transmitting and communications coils with solenoids in anti-Helmholtz configurations.

Skin patches for sensing or affecting a body parameter

An electrode that includes an elongate lead body and a nerve cuff. The nerve cuff may include a biologically compatible, elastic, electrically insulative helical cuff body configured to be disposed around a nerve, and a plurality of electrically conductive contacts carried by the helical cuff body that are spaced from one another.

Electrode leads having multi-application helical nerve cuffs and associated systems and methods

A charger including a class E power driver, a frequency-shift keying ('FSK') module, and a processor. The processor can receive data relating to the operation of the class E power driver and can control the class E power driver based on the received data relating to the operation of the class E power driver. The processor can additionally control the FSK module to modulate the natural frequency of the class E power transformer to thereby allow the simultaneous recharging of an implantable device and the transmission of data to the implantable device. The processor can additionally compensate for propagation delays by adjusting switching times.

Microprocessor controlled class E driver

An electrode lead comprises an electrically insulative cuff body and at least three axially aligned electrode contacts circumferentially disposed along the inner surface of the cuff body when in the furled state. The electrode contacts may be circumferentially disposed around a nerve, and an electrical pulse train may be delivered to the electrode contacts thereby stimulating the nerve to treat obstructive sleep apnea. The electrical pulse train may be one that pre-conditions peripherally located nerve fascicles to not be stimulated, while stimulating centrally located nerve fascicles. A feedback mechanism can be used to titrate electrode contacts and electrical pulse train to the patient. A sensor that is affixed to the case of a neurostimulator can be used to measure physiological artifacts of respiration, and a motion detector can be used to sense tapping of the neurostimulator to toggle the neurostimulator between an ON position and an OFF position.

Stimulator systems and methods for obstructive sleep apnea

A hermetically sealed biocompatible pressure sensor module configured for implant at a desired site at which a pressure is to be measured. Anodic bonding of the pressure module package components which have similar thermal coefficients of expansion provides low stress bonding and maintains long term reliability, dependability and accuracy. The pressure sensor module includes a pressure sensitive membrane which is in direct contact with the environment at which a pressure is to be measured. The pressure sensor module forms a part of a pressure measuring system which uses a telemetry link between the pressure sensor module and an external controller for data transmission and transfer. Operating power for the pressure sensor module is provided by the external controller and an internal rechargeable energy storage component. Accordingly, the pressure measuring system provides a dual stage power and data transfer capability for use with an implantable system. An exemplary use of the pressure sensor module is in a three pressure sensor system including a flow control valve in a shunt to treat hydrocephalus. The use of integrated circuit chips and an internal coil with an optional ferrite core in the pressure sensor module provides for low power consumption and reliable signal processing. An embodiment of the invention includes a pressure sensor and associated electromagnetic coils embedded in the tip portion of the shunt for measuring the pressure of fluid externally of the shunt at the tip portion.

Implantable shunt system and associated pressure sensors

In accordance with the present invention, various embodiments of neurostimulators and stimulation systems are disclosed that provide different shapes and patterns of stimulus pulses and trains of pulses with fixed and no fixed frequencies. The neurostimulator can be configured to provide high frequency stimulation and also be implantable in the head or neck regions in order to stimulate nerves and nerve ganglions in the head and neck regions and also stimulate the brain.

Neurostimulators and stimulation systems

Systems and devices for a high-efficiency magnetic link for implantable devices are disclosed herein. These devices can include a charging coil located in the implantable device and a charging coil located in a charge head of a charger. The charging coils can each include an elongate core and wire windings wrapped around a longitudinal axis of the elongate core. The charging coil of the charge head can be attached to a rotatable mount, which can be used to align the longitudinal axis of the charging coil of the charge head with longitudinal axis of the implantable device such that the axes of the charging coils are parallel.

High efficiency magnetic link for implantable devices

Growing community of inventors

Pasadena, CA, United States of America

Brian R Dearden