The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 16, 1993
Filed:
Jan. 31, 1991
Applicant:
Inventor:
Richard A Jaffe, Palo Alto, CA (US);
Assignee:
Board of Trustees of the Leland Stanford Junior University, Stanford, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B / ; A61M / ;
U.S. Cl.
CPC ...
128634 ; 12820714 ;
Abstract
An optical path is provided in the wall of an endotracheal tube to transmit light from a light source to the tracheal tissue. The same path or different path may be used to receive light reflected from the tracheal tissue to a detector for detecting the oxygen saturation of blood of a subject. The light supplied may also be directed across the gaseous medium inside the tube and received by a different optical path. The received light signal is then detected to determine the carbon dioxide concentration of the medium inside the trachea.