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:
Apr. 30, 2019
Filed:
Feb. 26, 2016
Mgc Diagnostics Corporation, St. Paul, MN (US);
John A. Norlien, Pine Springs, MN (US);
Daniel Stout, Little Canada, MN (US);
MGC Diagnostics Corp., St. Paul, MN (US);
Abstract
The present invention describes an apparatus and method for determining the energy expenditure of a subject by indirect calorimetry where respiratory gases Oand COare captured in a tent mask coupled through a pneumotach flow meter to a vacuum inlet of a blower fan whose speed is controlled by a computer running a program that ensures that the bias flow being drawn through the mask always exceeds the subject's peak expiratory flow. VOand VCOand flow values are measured on a breath-by-breath basis and used in arriving at a bias flow adjustment voltage to be applied to the blower fan for adjusting its speed.