Electrical discharge catheter system for extracting emboli in endovascular interventions
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United States of America Patent
Stats
-
Jan 20, 2004
Grant Date -
Jul 18, 2002
app pub date -
Nov 30, 2000
filing date -
Aug 16, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A catheter system for removing occlusive materials from a targeted endoluminal site, such as a vascular graft. The catheter system utilizes an electrical source and a controller to deliver sequences of very small electrical discharges between paired electrodes in a fluid-jet arrangement (i) to cause high fluid flow velocities in the catheter's fluid extraction pathway based on Bernoulli's Law of Pressure Differential, (ii) to create a selected level of turbulent fluid flows within the targeted site to remove occlusive material from the vessel walls and to thereafter suction fluids and entrained embolic particles into the extraction pathway, and (iii) to emulsify any embolic particles having a cross-sectional dimension larger than a couple of hundred micrometers to allows passage of the embolic particles through the elongate catheter to the catheter handle.
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