Retrieval systems and methods for use thereof
First Claim
Patent Images
1. A method of recanalizing a blood vessel having an obstruction, the method comprising:
- inserting an expandable structure within the obstruction, where the expandable structure comprises at least one fluid delivery port on an exterior surface of the expandable structure;
expanding the expandable structure within the obstruction; and
delivering a substance through the fluid delivery port such that the substance begins to dissolve the obstruction.
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Accused Products
Abstract
The devices and methods described herein relate to improved structures for removing obstructions from body lumens. Such devices have applicability in through-out the body, including clearing of blockages within the vasculature, by recanalizing or removing the obstruction within the body lumen.
288 Citations
18 Claims
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1. A method of recanalizing a blood vessel having an obstruction, the method comprising:
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inserting an expandable structure within the obstruction, where the expandable structure comprises at least one fluid delivery port on an exterior surface of the expandable structure; expanding the expandable structure within the obstruction; and delivering a substance through the fluid delivery port such that the substance begins to dissolve the obstruction.
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2. A method of recanalizing a blood vessel having an obstruction, the method comprising:
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advancing a microcathter distal to the obstruction; deploying a distal capturing portion distally of the obstruction; positioning a proximal capturing portion within the obstruction, such that the proximal capturing portion extends beyond a first end and a second end of the obstruction and where the proximal capturing portion expands to compress a portion of the obstruction against the vessel; withdrawing the proximal capturing portion proximally to the obstruction; securing the obstruction by moving the distal capturing portion and the proximal capturing portion together; and removing the obstruction from the blood vessel. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of recanalizing a blood vessel having an obstruction, the method comprising:
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advancing a catheter distal to the obstruction; deploying a first capturing portion distally of the obstruction, where the first capturing portion comprises a permeable distal end, an open proximal end, a capture surface extending therebetween, and at least one leading wire extending through the capturing portion and through the catheter; positioning a second capturing portion within the obstruction, the second capturing portion having an open distal end, a fluid permeable proximal end, and a medial surface extending therebetween, such that the second capturing portion compresses a portion of the obstruction against the blood vessel; withdrawing the second capturing portion proximal to the obstruction; capturing the obstruction between the first and second capturing portions by moving the first capturing portion and the second capturing portion together towards the obstruction by pulling on the leading wire to apply a force to the capturing portion at a location distal to the open proximal end of the first capturing portion; and removing the obstruction from the blood vessel.
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Specification