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Internal registration of gas/air—and other fluid flows in a human body and use of pressure sensors for such registration

  • US 6,216,702 B1
  • Filed: 05/29/1997
  • Issued: 04/17/2001
  • Est. Priority Date: 12/14/1994
  • Status: Expired due to Fees
First Claim
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1. A method for measuring respiratory air pressure, respiratory air flow and other physiological parameters in a living body by utilization of just one sensor, the method comprising:

  • positioning a tube in an internal respiratory passageway of the living body in at least one position, the tube comprising a sensor positioned therein, the tube being positioned in order to locate the sensor within the respiratory passageway of the living body and exposing the sensor to pressure and flow of a medium flowing through the respiratory passageway, the sensor being capable of pressure measurements, and the sensor having temperature sensitive characteristics and capable of providing electrical signals in response to pressure and air flow thereon; and

    measuring the respiratory air pressure, the respiratory air flow and optionally at least one other physiological parameter in the living body using the sensor;

    wherein, the measurements of the respiratory air pressure, the respiratory air flow and the optional other physiological parameter are made independently of each other and simultaneously using said sensor, the sensor providing at least a pressure signal in response to the respiratory air pressure, at least a flow signal in response to the respiratory air flow and optionally at least another signal in response to the other physiological parameter.

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