Spring wing assembly for photoplethysmorgraphic sensor

Details Spring wing assembly for photoplethysmorgraphic sensor Spring wing assembly for photoplethysmorgraphic sensor

2006-06-22

2011-12-13

Winakur, Eric (Department: 3777)

Surgery

Diagnostic testing

Measuring or detecting nonradioactive constituent of body...

C600S322000, C600S326000, C600S344000

Reexamination Certificate

active

08078251

ABSTRACT:
A photoplethysmographic sensor designed for use on the presenting portion of a fetus during labor and delivery. The sensor has a non-deployed state in which the sensor presents a smaller footprint, or cross sectional area, for transvaginal insertion. Once the sensor is applied to the fetal tissue it is moved into the deployed state, which has a larger footprint or cross sectional area, than the sensor does in the non-deployed state. The deployed state optimizes the physical distance between the light emitter and the photodetector to maximize the photoplethysmographic measurement accuracy from the fetal tissue.

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