Percutaneous catheter and guidewire for filtering during ablation of myocardial or vascular tissue
First Claim
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1. A percutaneous guidance catheter system, comprising:
- an elongate member having a proximal end, a distal end and a first lumen therebetween;
an expandable filtration assembly having an expanded configuration that defines a distally facing cavity, the expandable filtration assembly being attached to the elongate member proximally of the distal end of the elongate member and extending distally beyond the distal end of the elongate member, the cavity including a gap between the distal end of the elongate member and the expandable filtration assembly, the gap extending longitudinally both distally and proximally from the distal end and extending radially from the distal end; and
a therapeutic catheter at least partially disposed in the first lumen of the elongate member.
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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.
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Citations
22 Claims
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1. A percutaneous guidance catheter system, comprising:
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an elongate member having a proximal end, a distal end and a first lumen therebetween; an expandable filtration assembly having an expanded configuration that defines a distally facing cavity, the expandable filtration assembly being attached to the elongate member proximally of the distal end of the elongate member and extending distally beyond the distal end of the elongate member, the cavity including a gap between the distal end of the elongate member and the expandable filtration assembly, the gap extending longitudinally both distally and proximally from the distal end and extending radially from the distal end; and a therapeutic catheter at least partially disposed in the first lumen of the elongate member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification