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Apparatuses and methods for a noninvasive measurement of physiological parameters

  • US 6,228,033 B1
  • Filed: 11/15/1999
  • Issued: 05/08/2001
  • Est. Priority Date: 05/14/1997
  • Status: Expired due to Fees
First Claim
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1. An apparatus for a simultaneous/synchronized noninvasive measurement of cardiorespiratory and related parameters comprisinga bioimpedance measuring means (5) connectable to the body of the patient for injecting a current to a first outer body segment and sensing the voltage in the first and second inner body segments for generating output signals (53, 54, 55, 56, 57), characterized in that the apparatus further comprises a pressure sensoring means (6) for the measurement of blood pressure, said sensoring means being connected to the bioimpedance measuring means (5) for generating a blood pressure output signal, a respiratory flow sensor (7) for measuring the patient'"'"'s respiration continuously, said respiratory flow sensor being connected to the bioimpedance measuring means (5) for generating a respiratory flow output signal, and a calculating means (83) for calculating cardiorespiratory and related parameters using said output signals.

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