Ablation catheter tip for generating an angled flow
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United States of America Patent
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Mar 29, 2011
Grant Date -
Jul 3, 2008
app pub date -
Dec 29, 2006
filing date -
Dec 29, 2006
priority date (Note) -
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Abstract
The present invention provides an ablation catheter tip for use with an irrigated catheter device comprising an inner cavity and at least one passageway that leads to an orifice, wherein the fluid flow from the orifice promotes a circular, vortex, or spiral flow around the catheter tip from the acute angle formed at the orifice with respect to a line tangent to the surface of the ablation electrode at the orifice. The present invention further provides for an ablation catheter tip, for use with an irrigated catheter device, comprising an inner cavity and at least one curved passageway that leads to an orifice, wherein a line drawn tangent to the arc of the curve forms an acute angle measured with respect to a line drawn tangent to surface of the ablation electrode at the orifice of the passageway. Additionally, the present inventions provides a method for cooling an ablation catheter tip and a method for generating, with a low-volume irrigation flow, a rotational, spiral, or vortex flow around the ablation catheter tip.
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