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Alfonso Cuevas

David S Breed

William C Alexander

Alan V Bray

Victor James Dube

Gary D Schmidt

The invention concerns a physiological monitoring device that, in one embodiment, comprises a capacitive sensor. The sensor comprises a first plate, a second plate and a dielectric medium coupled to the first plate and second plate. A power source charges the sensor to generate an initial capacitance. A band couples the sensor to a blood vessel of a patient. For example, the blood vessel can be located in the umbilical cord of a human baby. An impulse from the blood vessel exerts pressure against the second plate of the sensor and consequently generates a first capacitance. A controller monitors the patient's physiological measurement by detecting the generation of the first capacitance.

Method and apparatus for monitoring physiological conditions

Corrosion, mold and moisture can be detected under outer layer of structures, such as surfaces associated with vessels and/or buildings, using nondestructive evaluation (NDE). Characterizing the dielectric properties of materials associated with a target can be executed by directing primary microwave energy from a source towards a target, receiving secondary microwave energy signals returned from the target, analyzing the secondary microwave energy signals, and characterizing dielectric properties of materials associated with the target based on analysis of the secondary signals. A system for non-destructively characterizing a target material's dielectric properties can includes a microwave energy source, a waveguide for directing microwave energy towards a target, a receiver for receiving microwave signals reflected off targets, an analyzer for assessing the difference between incident and reflected microwave signals to determine the presence of corrosion within a target or a targeted area, and an indicator for providing results of analysis.

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Austin, TX, United States of America

Alfonso Cuevas