University of Pittsburgh

The University of Tennessee Research Foundation

Huazhong University of Science and Technology

Mingui Sun

Robert Joseph Sclabassi

Wenyan Jia

Xinyan Cui

Nicolas Alexander Alba

Steven Hackworth

John Fernstrom

Madelyn Fernstrom

Marlin H Mickle

Fei Zhang

Xiaoyu Liu

Paresh Vasandani

Joseph A Marcanio

Ervin Sejdic

Amro El-Jaroudi

Di Gao

Jacob F Wasserman

Jiping He

Zhi-Hong Mao

Qi Xu

Hao Wang

James Coyle

Zhihong Mao

Joshua Dudik

Wei Liang

Bo Luan

Daliang L Li

Parthasarathy Deenadayalan Thirumala

Jun Zhao

Jeffrey Balzer

Laligam N Sekhar

Robert J Scalbassi

Electrodes providing excellent recording and physical stability. Electrodes are disclosed that may include a plurality of small teeth that possess a novel design shape and orientation. The shallow and relatively long teeth run parallel to the rim of the electrode that presses against the patient's skin. When the electrode is twisted onto skin, the tiny teeth penetrate the stratum corneum and move nearly horizontally under the stratum corneum, thus anchoring the electrode securely to the skin. The electrodes cause minimal discomfort to the patient since the small teeth do not extend to the pain fibers which are located in deeper layers of the skin. The electrodes may be fabricated in a variety of geometries including cylindrical, disk, and blunt bullet or top shapes. In some instances, the electrodes may be connected to detachable leads having magnetic properties.

Skin screw electrodes

An energy harvesting device includes a housing (), a moveable device () disposed within the housing and including a first surface including a first material () and a second surface including a second material (), wherein the moveable device is operable to move to bring the first and second surfaces together and apart to cause contact and separation between the first and second materials, a first strap () attached to the housing, a second strap () coupled to the moveable device, wherein movement of the second strap causes operation of the moveable device, and electronic circuitry () structured to harvest energy from the electrical charge generated by the contact between the first and second materials.

Wearable respiratory energy harvester

An electrode system include a flowable and cohesive surface contact element comprising a hydrophilic polymer swollen with an electrolyte fluid, the contact element having a Q' ratio of at least 5 as defined by the equation wherein Wis the dry weight of the hydrophilic polymer and Wis weight of water in the sample after absorption of the electrolyte fluid comprising water and an electrolyte salt. The surface contact element can consist essentially of the hydrophilic polymer swollen by the electrolyte fluid. Another electrode system includes a contact element including a crosslinked hydrophilic polymer matrix. The contact element has a Q&#x2032; ratio of at least 5 as defined by the equation The contact elements can also have a Q&#x2032; ratio of at least 6, at least 7, at least 10 or even at least 11.

Electrode systems, devices and methods

Electronic systems, devices and methods are provided to accurately record and analyze food intake and physical activity in a subject. A device is provided to be placed on a subject which records video using at least two video cameras positioned to record stereoscopic image pair, as well as other physiological and/or environmental data including, for example, oxygen saturation, heart rate, and environmental factors such as physical location, temperature, and humidity. Video data is analyzed along with other data obtained by the device to determine food consumption and/or physical activity of the subject, much of which is accomplished by automated computer-implemented processes.

Method, apparatus and system for food intake and physical activity assessment

A method of classifying a swallow of a subject includes obtaining vibration data that is based on and indicative of a number of vibrations resulting from the swallow, and using a computer implemented deep learning classifier to classify the swallow based on the vibration data. Also, a system for classifying a swallow of a subject includes a computing device implementing a deep learning classifier. The computing device includes a processor apparatus structured and configured to receive vibration data that is based on and indicative of a number of vibrations resulting from the swallow, and use the deep learning classifier to classify the swallow based on the vibration data. The deep learning classifier may comprise a single layer or a multi-layer Deep Belief network.

Deep learning for classification of swallows

Single-unit EEG sensors contain multiple closely spaced dry electrodes that can hook onto skin and associated electronic circuitry such as amplifiers, A/D convertors, wireless transmitters, and a power source such as a battery. The electrodes can be separated by about 20 mm or less, and the associated circuitry can be situated within a volume defined by the multiple electrodes. The single-unit sensors hook onto the skin using a tooth surface so that a rotation of the sensor secures and electrically connects the sensor to the skin.

Single-unit leadless EEG sensor

An electrode system include a flowable and cohesive surface contact element comprising a hydrophilic polymer swollen with an electrolyte fluid, the contact element having a Q' ratio of at least 5 as defined by the equation wherein Wis the dry weight of the hydrophilic polymer and Wis weight of water in the sample after absorption of the electrolyte fluid comprising water and an electrolyte salt. The surface contact element can consist essentially of the hydrophilic polymer swollen by the electrolyte fluid. Another electrode system includes a contact element including a crosslinked hydrophilic polymer matrix. The contact element has a Q&#x2032; ratio of at least 5 as defined by the equation  The contact elements can also have a Q&#x2032; ratio of at least 6, at least 7, at least 10 or even at least 11.

A wireless power transfer system including a driver coil array, a hexagonally-packed transmitter mat, a receiver coil, and a load coil for powering a medical implant. The magnetically coupled resonance between two isolated parts is established by an array of primary coils and a single small secondary coil to create a transcutaneous power link for implanted devices as moving targets. The primary isolated part includes a driver coil array magnetically coupled to a mat of hexagonally packed primary coils. Power is injected by the driver coils into the transmitter coils in the transmitter mat to maintain resonance in the presence of losses and power drawn by the receiver coil from the magnetic field. The implanted secondary isolated part includes a receiver coil magnetically coupled to a load coil. A rectification/filter system is connected to the load coil supplying DC power to the electronic circuits of the implant.

Resonance-based wireless power transfer system

Electronic systems, devices and methods are provided to accurately measure both food intake and physical activity in a subject. A device is provided to be placed on a subject which records video as well as other physiological and/or environmental data. Video data can be analyzed along with other data obtained by the device to determine food consumption and physical activity of the subject, much of which is accomplished by automated computer-implemented processes.

A wireless energy transfer system includes a first energy transfer unit having at least one resonant frequency, a second energy transfer unit having the at least one resonant frequency, and a load. The first wireless energy transfer unit includes a first coil magnetically coupled to a first wireless energy transfer cell, and the second wireless energy transfer unit includes a second coil magnetically coupled to a second wireless energy transfer cell. The first coil receives first energy and through the magnetic coupling between the first coil and the first wireless energy transfer cell, the first wireless energy transfer cell is caused to generate second energy, wherein the second wireless energy transfer cell receives the second energy and through the magnetic coupling between the second wireless energy transfer cell and the second coil, the second coil is caused to provide third electromagnetic wave energy to the load.

Wireless energy transfer system

Growing community of inventors

Pittsburgh, PA, United States of America

Mingui Sun