An automatic sphygmomanometer for measuring the blood pressure of a subject based on Korotkoff sounds is adapted to analyze the transition of the pulse signal amplitude of a detected cuff pressure signal, set a range in which systolic blood pressure of the subject is capable of residing and a range in...http://www.google.es/patents/US5135003?utm_source=gb-gplus-sharePatente US5135003 - Automatic sphygmomanometer
