Portable pulse meter
Durable sensor for detecting optical pulses
Vasometric test apparatus for finger testing Patent #: 4838277
ApplicationNo. 329535 filed on 03/28/1989
US Classes:600/479, Cardiovascular testing600/500Detecting blood vessel pulsation
ExaminersPrimary: Jaworski, Francis J.
Attorney, Agent or Firm
International ClassA61B 005/02
Foreign Application Priority Data1988-07-06 JP
AbstractA fingertip pulse wave sensor includes a fingertip supporting base having either a nail supporting surface or a fingertip cushion supporting surface, and a slider having the other of the nail supporting surface and the fingertip cushion supporting surface. The slider is guided on the fingertip supporting base in such a manner as to be slidable in the direction in which it is moved away from or toward the fingertip supporting base. The slider is urged in the direction in which it is moved toward the fingertip supporting base by an elastic body which is capable of applying a substantially fixed amount of pressure with respect to the variations in the slide stroke in the direction in which the slider is moved away from the fingertip supporting base which occur when different fingertips are set. The fingertip pulse wave sensor also includes a light-emitting element disposed in one of the nail supporting surfaces and the fingertip cushion supporting surface, and a light-receiving element disposed on the other of the nail supporting surface and the fingertip cushion supporting surface.