Portable circuit and method for performing a time study and anal

Details Portable circuit and method for performing a time study and anal Portable circuit and method for performing a time study and anal

1983-05-04

1986-10-21

Smith, Jerry

Boots, shoes, and leggings

128631, 128635, G06G 760, A61B 505, A61B 500

Patent

active

046189297

ABSTRACT:
A portable circuit and method for performing a time study and analysis of bodily ionic characteristics as esophageal pH includes a transducer 11 for measuring pH and generating a proportional analog signal and an interface 12 for converting this signal into a representative digital signal including offset and gain controls 23,24 for permitting correction for transducer 11 calibration drift during the study period. A processor 14 receives and stores all digital signals for rapid transmission to a data analysis after the study period is ended. Esophageal pH values are measured and stored for a plurality of pre-study and post-study known conditions.

REFERENCES:
patent: 3889255 (1975-06-01), Pettersen
patent: 4109527 (1978-08-01), Goode, Jr.
patent: 4326535 (1982-04-01), Steffel et al.
patent: 4449538 (1984-05-01), Corbitt et al.
Flexible pH Electrode for Esophageal and Gastro-Intestinal Research; Microelectrodes, Inc. 1979.
G. Sanders, W. H. Ko, R. Jones and S. Vamvakas--A Solid State Portable Gastroesophageal Reflux pH Recorder (Abstract in Engineering in Medicine and Biology, 33rd Annual Conference, Washington, D.C., Oct. 1, 1980) sponsored by Alliance for Engineering in Medicine and Biology, Publisher: Institute for Electronic Engineers 1980--p. 54.

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