Ultrasound catheter having improved distal end
First Claim
1. An ultrasound catheter comprising:
- an elongate flexible catheter body having a proximal end, a distal end and at least one lumen extending longitudinally therethrough;
an ultrasound transmission member extending longitudinally through the lumen of the catheter body, the ultrasound transmission member having a proximal end that is coupled to a separate ultrasound generating device;
a tip coupled to the distal end of the ultrasound transmission member, wherein the tip has at least one radial dimensional step.
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Accused Products
Abstract
An ultrasound catheter has an elongate flexible catheter body having a lumen extending longitudinally therethrough, and an ultrasound transmission member extending longitudinally through the lumen of the catheter body. The ultrasound transmission member has a proximal end that is coupled to a separate ultrasound generating device, and a distal tip that is attached to the distal end of the ultrasound transmission member and which is located at the distal end of the catheter body. The distal tip has at least one dimensional step. The ultrasound transmission member is directly attached to the catheter body and/or to a guidewire tube, either directly or via an attachment device. The catheter has an additional radiopaque marker positioned on the distal end the catheter.
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Citations
12 Claims
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1. An ultrasound catheter comprising:
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an elongate flexible catheter body having a proximal end, a distal end and at least one lumen extending longitudinally therethrough; an ultrasound transmission member extending longitudinally through the lumen of the catheter body, the ultrasound transmission member having a proximal end that is coupled to a separate ultrasound generating device; a tip coupled to the distal end of the ultrasound transmission member, wherein the tip has at least one radial dimensional step. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of ablating tissue in a vessel, comprising:
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a. providing an ultrasound catheter comprising; an elongate flexible catheter body having a proximal end, a distal end and a lumen extending longitudinally therethrough; an ultrasound transmission member extending longitudinally through the lumen of the catheter body, the ultrasound transmission member having a proximal end that is coupled to a separate ultrasound generating device; a tip coupled to the distal end of the ultrasound transmission member and having at least one dimensional step that separates the tip into a distal portion and a proximal portion that is larger than the distal portion; b. positioning the ultrasound catheter tip against an ablation target; and c. creating a pilot entry lumen in the ablation target with the distal portion of the tip to further facilitate the ablation process.
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Specification