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:
Jan. 12, 2016
Filed:
Sep. 10, 2013
St. Michael's Hospital, Toronto, CA;
Sandra Donnelly, Mississauga, CA;
Derek Muradali, Toronto, CA;
St. Michael's Hospital, Toronto, CA;
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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