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. 11, 2006
Filed:
Mar. 27, 2003
Joseph A. Orr, Park City, UT (US);
Kai Kück, Hamburg, DE;
Joseph A. Orr, Park City, UT (US);
Kai Kück, Hamburg, DE;
Ric Investments, Inc., Wilmington, DE (US);
Abstract
A method for noninvasively determining the pulmonary capillary blood flow or cardiac output of a patient includes measurement of respiratory flow and carbon dioxide pressure of the patient's breathing. These measurements are used to calculate carbon dioxide elimination and an indicator of the carbon dioxide content of the patient's blood. A geometric relationship between the carbon dioxide elimination data and the data of the indicator of carbon dioxide content is determined. At least one set of the data is modified and at least one other determination of a geometric relationship between the data is made to find the most accurate data set. The data may be modified by filtering or clustering. A slope of at least a portion of the geometric relationship is then used to determine the pulmonary capillary blood flow or cardiac output of the patient.