Low power apparatus and method to measure complex electrical admittance or impedance

US9295404B2 · kind B2 · utility

Assignees

• Admittance Technologies, Inc. · US
• The Board of Regents of the University of Texas System · US

Inventors

• Jonathan W. Valvano · Austin, US
• Marc D. Feldman · Austin, US
• John Porterfield · Austin, US
• John A. Pearce · Austin, US
• Erik Larson · Austin, US
• Lev Shuhatovich · Houston, US
• Kathryn Loeffler · Leander, US
• Raffaele Cetrulo · Austin, US

Key dates

• Filing date: Mar 20, 2012
• Grant date: Mar 29, 2016
• Expiry date: Mar 20, 2032

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61N1/3706
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An apparatus for measuring complex electrical admittance and/or complex electrical impedance in animal or human patients includes a first electrode and at least a second electrode which are adapted to be disposed in the patient. The apparatus includes a housing adapted to be disposed in the patient. The housing has disposed in it a stimulator in electrical communication with at least the first electrode to stimulate the first electrode with either current or voltage, a sensor in electrical communication with at least the second electrode to sense a response from the second electrode based on the stimulation of the first electrode, and a signal processor in electrical communication with the sensor to determine the complex electrical admittance or impedance of the patient.