Non-invasive uterine activity sensor

Details Non-invasive uterine activity sensor Non-invasive uterine activity sensor

1996-06-19

1999-03-09

Lateef, Marvin M.

Surgery

Diagnostic testing

Measuring or detecting nonradioactive constituent of body...

600473, 600476, 600591, A61B 500

Patent

active

058792937

ABSTRACT:
Uterine activity is sensed by passing light through the patient's abdominal wall and detecting the light reflected from abdominal tissues. The intensity of the reflected light varies with the state of contraction of the patient's uterus. The use of light for monitoring uterine activity avoids the problems of size, fixation, and measurement accuracy exhibited by the conventional tocodynamometer technique.

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Haumschild, D. J., "Microvascular blood flow measurement by laser Doppler flowmetry," TSI Application Note, TSI Incorporated, St. Paul, Minnesota, 1986.
Nellcor Incorporated's Reference Note entitled "Technical Issues of Noninvasive Fetal Osygen Saturation Moniroting Using the Nellcor.RTM. N-400," Nellcor Incorporated, Pleasanton, California, 1994.
Reynolds, S. R. M., Physiology of the Uterus, Paul B. Hoeber, Inc., New York, 1949, pp. 42-53.
Translation of Pat. No. 144575 (SU, 1959), Item #4 above.

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