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:
Jun. 08, 2004
Filed:
May. 29, 2001
Applicant:
Inventors:
Nikolai M. Krivitski, Ithaca, NY (US);
Cornelis J. Drost, Ithaca, NY (US);
Assignee:
Transonic Systems Inc., Ithaca, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B 5/02 ;
U.S. Cl.
CPC ...
A61B 5/02 ;
Abstract
The present invention provides a method for measuring the blood flow rate within an A-V shunt via indicator dilution techniques. Unknown flow resistance within the A-V shunt are addressed by adjusting a measured flow rate to provide a flow rate within a predetermined margin of error. The calculated flow rate can be rejected based upon flow conditions of the introduced indicator. Different indicator introduction rates can be used to enhance accuracy of the measured flow. The indicator flow path can include a flow restrictor to limit the flow rate of the indicator to below a predetermined value.