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. 28, 2006
Filed:
Sep. 08, 2003
Michael B. Jaffe, Cheshire, CT (US);
Joseph A. Orr, Salt Lake City, UT (US);
Scott A. Kofoed, Salt Lake City, UT (US);
Dwayne Westenskow, Salt Lake City, UT (US);
Michael B. Jaffe, Cheshire, CT (US);
Joseph A. Orr, Salt Lake City, UT (US);
Scott A. Kofoed, Salt Lake City, UT (US);
Dwayne Westenskow, Salt Lake City, UT (US);
NTC Technology Inc., Wilmington, DE (US);
Abstract
Apparatus and methods for non-invasively determining the cardiac output or pulmonary capillary blood flow of a patient using partial re-breathing techniques. The apparatus includes a substantially instantaneously adjustable deadspace volume for accommodating differences in sizes or breathing capacities of various patients. The apparatus may be constructed of inexpensive elements, including one or more two-way valves, which render the apparatus very simple to use and inexpensive so that the unit may be employed as a disposable product. The method of the invention includes estimating the cardiac output or pulmonary capillary blood flow of a patient based on partial pressure of alveolar CO, rather than on the partial pressure of end tidal CO, as previously practiced. A computer program for calculating the cardiac output or pulmonary capillary blood flow of a patient is also disclosed.