Process and apparatus for extended, non-invasive monitoring of u

Details Process and apparatus for extended, non-invasive monitoring of u Process and apparatus for extended, non-invasive monitoring of u

1990-02-20

1991-08-27

Cohen, Lee S.

Surgery

Truss

Pad

128778, 128782, A61B 511

Patent

active

050425030

ABSTRACT:
A process and apparatus is disclosed for effective home monitoring of uterine contractions of a pregnant woman, in order to provide early warning signs of possible premature birth. Using a transducer of known type, uterine contractions are monitored continuously over a period of time. An electrical signal is generated, which is digitized for processing with simple IC chips. Importantly, only those contractions whose intensity exceeds a threshold value for a duration exceeding a threshold period are stored for future processing and analysis. Analysis of these over-threshold values provides a valuable basis on which to judge the likelihood of premature birth. Limiting the analysis only to such over-threshold values enables the system and equipment to be of a highly simplified, economical construction, suitable for widespread home use yet capable of monitoring over an extended duration. Among other features, if the number of over-threshold (both intensity and duration) exceeds a predetermined value in a given period of time, an alarm signal is given, indicating that the patient's condition should be evaluated by medical specialist.

REFERENCES:
patent: Re31158 (1983-02-01), Carter et al.
patent: 3989034 (1976-11-01), Hojaiban
patent: 4624263 (1986-11-01), Slavin
patent: 4738268 (1988-04-01), Kipnis
Hughes et al., "On-Line Digital Processing of Uterine Contraction Waveforms", Naecon '77 Record, (1977), pp. 244-250.
Lin et al., "A Microprocessor-Based Data Acquisition and Processing System", Proceedings of IEEE, vol. 65, No. 5, (1977), pp. 722-729.

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