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:
Aug. 16, 1988
Filed:
Mar. 13, 1987
Pekka Merilainen, Helsinki, FI;
Instrumentarium Corp., , FI;
Abstract
A gas collector unit to be fitted over the head of a patient for measuring oxygen consumption, carbon dioxide output and respiratory quotient, said unit comprising a clear, substantially half-ellipsoidal plastic canopy (1), a cylinder of plastic sheeting (8), which is airtightly seamed to its edges and whose mouth (10) can be airtightly sealed around the neck of a patient, as well as hose couplings (2) and (3) and flow diffusers (6) and (7) associated therewith. The free volume of a canopy with a patient's head therein is less than a third of the amount air flowing through the canopy per minute and that the free cross-sectional area of a canopy perpendicular to flow is dimensioned in a manner that the average speed of air flow over the face is higher than 4 cm/s and the CO.sub.2 -content of inhalation air is less than 0.2%.