Surgery – Truss – Pad
Patent
1992-09-28
1994-08-02
Jaworski, Francis
Surgery
Truss
Pad
1286611, A61B 806
Patent
active
053336143
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.
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