Multi-Electrode Irrigated Balloon Catheter
First Claim
Patent Images
1. An irrigated catheter comprising:
- a catheter body having an exterior surface and at least one internal lumen with a varied diameter along a longitudinal length thereof for passage of a fluid;
a plurality of elution holes along the exterior surface and spaced from one another along the longitudinal length of the catheter body; and
a plurality of ducts in fluid communication with the lumen, each duct leading from the lumen to one of the elution holes;
wherein the diameter of the lumen is varied between at least two of the longitudinally spaced ducts to change a fluid pressure along the longitudinal length and regulate fluid flow through the spaced apart elution holes.
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Abstract
A fluid delivery catheter configured to allow optimal fluid distribution through each electrode by varying the diameter of a catheter lumen is disclosed. Uniform or different fluid flow rates through longitudinally spaced apart elution holes may be achieved. Exemplary fluids for use with the catheter include a cooling fluid, a therapeutic fluid, and a medication.
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Citations
31 Claims
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1. An irrigated catheter comprising:
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a catheter body having an exterior surface and at least one internal lumen with a varied diameter along a longitudinal length thereof for passage of a fluid; a plurality of elution holes along the exterior surface and spaced from one another along the longitudinal length of the catheter body; and a plurality of ducts in fluid communication with the lumen, each duct leading from the lumen to one of the elution holes; wherein the diameter of the lumen is varied between at least two of the longitudinally spaced ducts to change a fluid pressure along the longitudinal length and regulate fluid flow through the spaced apart elution holes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 22, 24, 25, 26, 27, 28, 29, 30, 31)
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13. (canceled)
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16. A fluid delivery catheter, the catheter comprising:
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an elongated catheter body having a distal portion; at least one inflatable balloon disposed on one side of the distal portion; a fluid delivery lumen having a flow constrictor that limits a flow of fluid in the lumen towards a distal end; and a plurality of ducts in fluid communication with the lumen at longitudinally spaced apart locations, each of the plurality of ducts defining a fluid passage to an exterior of the catheter. wherein the flow constrictor is disposed between at least two of the longitudinally spaced apart locations of the ducts. - View Dependent Claims (17, 18, 19, 20, 21)
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23. An irrigated catheter comprising:
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a catheter body comprising a distal region; and an irrigation path extending through the distal region, the irrigation path comprising; a fluid delivery lumen extending along a longitudinal axis; a plurality of ducts in fluid communication with the lumen, the ducts arranged in groups spaced apart from one another along the longitudinal axis; and a plurality of elution holes spaced from one another along the longitudinal axis, each of the elution holes in fluid communication with one of the ducts; wherein the irrigation path is configured to produce a flow rate pattern through the elution holes in the distal region, the flow rate pattern determined by selecting a size of the fluid delivery lumen and varying one or more of the following; a diameter of the lumen along the longitudinal axis, a distance between the spaced apart groups of ducts along the longitudinal axis, sizes of the ducts, and angles of the ducts with respect to the longitudinal axis.
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Specification