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. 09, 1994
Filed:
Apr. 07, 1992
Applicant:
Inventors:
Kaj Blomqvist, Espoo, FI;
Mika Mustonen, Helsinki, FI;
Asko Saarelainen, Espoo, FI;
Pekka Merilainen, Helsinki, FI;
Assignee:
Instrumentarium Corporation, , FI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61M / ;
U.S. Cl.
CPC ...
12820418 ; 12820511 ; 128718 ; 12820024 ;
Abstract
A method and apparatus for delivering respiratory gases to a patient maintains a mixture of gases stable and minimizes the effects of ambient air leakage. Some of the gases supplied to a gas collection unit in which the patient's head is placed are by-passed to a buffer space that partially surrounds the gas collection unit. The volume of the buffer space stabilizes the mixture and outflow from the buffer space minimizes ambient air leakage into the gas collection unit. Gases from the gas collection unit are supplied to a measuring unit for analyzing the gas respired by the patient.