A beltless fiber optic labor contraction sensing device including a fiber optic strain sensor for detecting labor contractions during childbirth. The fiber optic strain sensor includes an optic cable, a light source for transmitting a light beam through the optic cable and a light detector for identifying...http://www.google.fr/patents/US7025723?utm_source=gb-gplus-shareBrevet US7025723 - Beltless fiber optic labor contraction sensing device
