Percutaneous catheter and guidewire for filtering during ablation of mycardial or vascular tissue
First Claim
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1. A percutaneous catheter for ablation of ectopic foci, comprising:
- an elongate member having a proximal end and a distal end;
an expandable filter mounted on a distal region of the elongate member;
means for ablating ectopic foci disposed at the distal end of the elongate member; and
wherein during use, the filter is expanded to capture necrosed tissue particles generated during the ablation.
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Abstract
An ablation catheter system for capturing and removing necrotic tissue and thrombi generated during an ablative procedure is disclosed. The catheter typically includes an elongate member, a filtration assembly disposed within the distal region, and an ablation instrument at the distal end. Alternatively, the ablation instrument is carried on the distal end of an ablation catheter, which is disposed within a lumen of the catheter system. The catheter may further include an aspiration port and lumen. Methods of using the devices in preventing distal embolization during ablative procedures are disclosed.
596 Citations
20 Claims
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1. A percutaneous catheter for ablation of ectopic foci, comprising:
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an elongate member having a proximal end and a distal end;
an expandable filter mounted on a distal region of the elongate member;
means for ablating ectopic foci disposed at the distal end of the elongate member; and
wherein during use, the filter is expanded to capture necrosed tissue particles generated during the ablation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A percutaneous guiding catheter system for ablation of ectopic foci, comprising:
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an elongate member having a proximal end, a distal end, and a lumen therebetween;
an expandable filter mounted on a distal region of the elongate member; and
a catheter comprising means for ablating ectopic foci disposed within the lumen of the elongate member, and having an ablation instrument at its distal end. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for ablation of ectopic foci, comprising the steps of:
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providing a catheter having a proximal end, a distal end, an ablation instrument at the distal end, and a filter on a distal region of the elongate member;
inserting the catheter into a vessel;
positioning the ablation instrument adjacent the ectopic foci;
expanding the filter; and
ablating the ectopic foci, wherein necrosed tissue particles generated during ablation are captured by the filter. - View Dependent Claims (20)
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Specification