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.:

US 8529452 B1

PDF
Full Text
Expired
Date of Patent:
Sep. 10, 2013

Filed:

Jun. 01, 2007
Applicants:

Sandra Donnelly, Mississauga, CA;

Derek Muradali, Toronto, CA;

Inventors:

Sandra Donnelly, Mississauga, CA;

Derek Muradali, Toronto, CA;

Assignee:

Other;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B 8/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

Provided are methods and systems for detecting a maturing arterio-venous fistula comprising a vein. An exemplary method comprises determining a wall thickness of the fistula and a lumen diameter of the fistula vein using a high frequency ultrasound imaging system. A blood pressure of the subject is determined. A circumferential vessel wall stress is determined from the measured blood pressure, the wall thickness of the fistula and a determined radius of the measured diameter of the fistula. The determined circumferential vessel stress is compared to a predetermined threshold stress to determine if the fistula is mature.


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Donnelly, Sandra. (2013). Ultrasonic evaluation of venous structures (U.S. Patent No. 8529452). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8529452

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