Patent · US Expired

Bi-directional partial re-breathing method

US6200271A · kind A · utility

34Cited by

12References

59Claims

0Family size

Assignee

NTC Technology, Inc. · US

Inventors

Kai Kuck · Hamburg, DE
Joseph Orr · Park City, US
Michael B. Jaffe · Cheshire, US
Dinesh G. Haryadi · Bengaluru, IN

Key dates

Filing date	Sep 9, 1998
Grant date	Mar 13, 2001
Priority date	—
Expiry date	Sep 9, 2018

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61B5/029
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A re-breathing method for determining pulmonary capillary blood flow that accounts for changes in the carbon dioxide content of a patient. The carbon dioxide elimination and partial pressure of end tidal carbon dioxide of the patient are measured prior to re-breathing, during re-breathing, and after re-breathing. A rate of change of carbon dioxide content of the venous blood of the patient is then calculated. The rate of change is then employed in calculating the pulmonary capillary blood flow of the patient.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.