Finger sensor for pulse oximetry system
Noncontactive arterial blood pressure monitor and measuring method
Method and apparatus for the automatic calibration of signals employed in oximetry
Instrument for non-invasive measurement of blood glucose
Electronic blood pressure meter Patent #: 5218966
ApplicationNo. 043464 filed on 02/24/1993
US Classes:600/310, Infrared, visible light, or ultraviolet radiation directed on or through body or constituent released therefrom600/316, Glucose600/322Determining blood constituent
ExaminersPrimary: Cohen, Lee S.
Assistant: Green, Brian K.
Attorney, Agent or Firm
International ClassA61B 005/00
AbstractA finger receptor is used with a non-invasive monitoring device to determine non-invasively the concentration of known constituents in blood or tissue. The receptor has a channel for receiving a finger of a user. The channel has a light entrance and a light exit so that light can be passed from a light source through a finger located in the channel in a direction generally normal to the finger. Extraneous light is excluded and the finger is held in position by a spring-mounted roller. The receptor has sensing means to determine when a finger has been properly positioned in the channel. Previous devices are not capable of achieving repeatable results to a sufficient degree to replace invasive methods of testing.