A sensor may be adapted to reduce signal artifacts by deflecting the effects of outside forces and sensor motion. A sensor is provided with a rigid annular structure adapted to reduce the effect of motion of a sensor emitter and/or detector. Further, a method of deflecting or minimizing outside forces...http://www.google.es/patents/US8145288?utm_source=gb-gplus-sharePatente US8145288 - Medical sensor for reducing signal artifacts and technique for using the same
Medical sensor for reducing signal artifacts and technique for using the same