James A Conti

US Patent:

44259220, Jan 17, 1984

Filed:

Apr 7, 1981

Appl. No.:

6/251743

Inventors:

James C. Conti - East Northport NY
Elaine Strope - East Northport NY
Eugene Findl - Amityville NY
Cynthia Griffiths - Port Jefferson Station NY

Assignee:

BioResearch Inc. - Farmingdale NY

International Classification:

A61B 502

US Classification:

128691

Abstract:

Method and apparatus are disclosed for obtaining flow information of a conductive fluid by detecting the streaming potential and analyzing the resultant signal. In a particular embodiment for detecting abnormal blood velocities in the arterial tree, the apparatus includes a flexible sensor having two fixedly spaced apart electrodes and a common mode signal electrode. Each sensor electrode is connected to an input of a differential amplifier and the common electrode is connected to the common input of the differential amplifier. The output signal from the differential amplifier, after filtering and amplification is provided to a recorder or oscilloscope so that it can be compared with the normal or average signal. A particular embodiment of the method is used to detect blood flow abnormalities, either too fast or too slow compared with most healthy individuals of the same age. In this method, a flexible sensor having two fixedly mounted electrodes is placed on the skin over the artery to be examined, for example the dorsalis pedis artery, so that each electrode is in electrical contact with a different part of the artery.

US Patent:

43440355, Aug 10, 1982

Filed:

Nov 10, 1980

Appl. No.:

6/205188

Inventors:

James C. Conti - East Northport NY
Eugene Findl - Amityville NY
William Wang - Forest Hills NY

Assignee:

BioResearch Inc. - Farmingdale NY

International Classification:

G01N 2700

US Classification:

324453

Abstract:

A method and apparatus are disclosed for sensing the changes in the electrical potential across a double layer. By using a conductive plug comprised of the same material that are in suspension in a fluid, the present method can be used to determine the timing and amount of agents to be added to the liquid to promote the removal of the particle. In one embodiment, the sensor is comprised of two closed chambers, a sensor chamber closed by a porous plug made from the subject material, and a reference chamber closed by a plug that prevents particle dispersion therethrough and also offers a negligible variation in double layer interface potential. An exemplary plug could be comprised of agar. Each chamber includes a corresponding electrode probe and is filled with a conductive solution.