The Charles Stark Draper Laboratory, Inc.

University of South Florida

Francy Lorena Sinatra

Stuart Richard Hart

Kevin Andrew Hufford

Philip James Hipol

Alfredo Weitzenfeld

Mark Xavier Sweeney

Erkinjon G Nazarov

Susana Lai-Yuen

Kenneth A Markoski

Gerard Michael DiLeo

Timothy A Postlethwaite

Gerard Michael Dileo

Susana K Lai Yuen

Spiros Z Manolakos

Clayton J Morris, Ii

An electronic catheter stethoscope measures and analyzes acoustic fields and dynamic pressure variations in the gaseous or liquid fluid inside a conventional medical catheter that is positioned in a patient's urologic, digestive, reproductive, cardiovascular, neurological or pulmonary system. Measurement transducers are installed in a housing connectable to multiple preselected medical catheters. The transducers detect bodily functions that are transmitted to the preselected catheter from within the body. The transducers, housing, electrical interface and signal processing electronics are positioned outside the body.

Electronic catheter stethoscope

A non-radioactive plasma ion source device includes at least four planar electrodes that define at least three chambers, including a discharger chamber and at least two additional chambers aligned along a major longitudinal axis of the housing. A discharger ionizes at least one of a transport gas and a discharge gas to form ions in the discharger chamber that are directed by a homogeneous electric field generated by the planar electrodes toward an analyte gas outlet. Ionized species of at least one of the transport gas and the discharge gas that are not entrained by a counterflow gas stream are discharged from the discharger chamber to form a stream of ionized particles that ionize a sample gas and thereby form a stream of ionized analyte particles of the same polarity. The ionized analyte particles are entrained with the stream of ionized particles and pass through an analyte gas outlet to an analyzer.

Non-radioactive, capacitive discharge plasma ion source and method

Growing community of inventors

Temple Terrace, FL, United States of America

Francy Lorena Sinatra