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:
Aug. 02, 1994
Filed:
Sep. 28, 1992
Andrew J Feiring, Milwaukee, WI (US);
Other;
Abstract
A vascular flow measurement catheter device for measuring total volumetric flow through a vessel includes a flow-measurement catheter having a full flow lumen of known cross sectional geometry provided with a relatively short distal measurement segment with inlet and outlet ports positioned to carry the full flow of the vessel in the manner of a segment of the vessel itself when the outer catheter is positioned in the vessel of interest. An ultrasonic transducer system is mounted in the flow-measurement catheter for communicating the velocity of the fluid in the measurement segment of the full flow lumen and for determining the total volumetric flow. An obturator catheter is provided in coaxial relation to the lumen of the flow-measurement catheter and adapted to travel along and within or without the full flow lumen of the measurement catheter to function to shut off the flow through the measurement catheter when advanced over inlet or outlet ports of the measurement catheter.