×

System for conveying gases from and to a subject's trachea and for measuring physiological parameters in vivo

  • US 5,193,544 A
  • Filed: 01/31/1991
  • Issued: 03/16/1993
  • Est. Priority Date: 01/31/1991
  • Status: Expired due to Fees
First Claim
Patent Images

1. An apparatus for conveying gases from and to a subject'"'"'s trachea and for enabling the measurement of a physiological parameter in vivo or the measurement of respired gas concentrations, comprising:

  • a tube suitable for insertion into the trachea and for conveying gases;

    at least one light source;

    at least one light detector; and

    means for conveying light from the light source to the trachea or locations within the trachea and for conveying light to the light detector from the trachea or locations within the trachea, said light conveying means including at least one optical path having two ends along the tube for passage of light signals between the trachea or locations within the trachea at one end of the path, and the detector at the other end, the at least one optical path transmitting light from the trachea or locations within the trachea along the tube to the detector for enabling the measurement of the physiological parameter or the measurement of respired gas concentrations of the subject.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×