DEVICES AND METHODS FOR PERCUTANEOUS ENDARTERECTOMY
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Accused Products
Abstract
Devices and methods are provided for percutaneously treating atherosclerotic plaques within blood vessels. Atherosclerotic plaques cause significant morbidity and mortality by narrowing the arteries, which adversely affects blood flow, and by acting as a source for thrombi and emboli thus causing acute organ ischemia. Current treatments include open surgery with its inherent drawbacks, and stenting, which is less invasive but leaves the plaque material in the artery, which promotes restenosis. The present invention combines the advantages of both approaches. In general, the invention provides tools that enable percutaneously dissecting the plaque from the arterial wall and removing it from the body.
68 Citations
87 Claims
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1-66. -66. (canceled)
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67. A device for percutaneous endarterectomy, comprising:
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a shaft having a lumen and a distal end, a rod disposable in the lumen; one or more expandable fingers having a proximal and distal end with the proximal end of the one or more fingers attached to the distal end of the shaft, and the one or more expandable fingers having an exterior surface adapted to face an artery and an interior surface adapted to face the rod; and one or more spokes connecting the rod to the one or more expandable fingers on the interior surface, wherein the one or more expandable fingers are controllable by the rod through the one or more spokes, wherein the one or more expandable fingers are configured to be adapted to remove an atherosclerotic plaque by peeling the plaque at a subintimal space without performing an incision into the subintimal space and without use of a blade. - View Dependent Claims (68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81)
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82. A device for percutaneous endarterectomy, comprising:
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a shaft; a catheter having a lumen and a distal end for passing over the shaft; one or more expandable retrograde fingers having a proximal and distal end with the proximal end of the one or more fingers attached to the distal end of the shaft wherein the distal end of the fingers face the proximal end of the catheter; and a slideable sheath positioned on the distal end of the catheter configured to cover the one or more retrograde fingers, wherein the retrograde fingers are configured to be adapted to remove an atherosclerotic plaque by peeling the plaque at a subintimal space without performing an incision into the subintimal space and without use of a blade. - View Dependent Claims (83, 84)
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85. A method of percutaneous endarterectomy, comprising:
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(a) accessing an artery having an atherosclerotic plaque with a device comprising; a shaft configured to pass through a lumen of a catheter, the shaft having a distal end, and one or more expandable fingers having a proximal and distal end with the proximal end of the one or more fingers attached to the distal end of the shaft, wherein the distal end of the one or more expandable fingers when expanded is substantially parallel to the shaft; and (b) utilizing the one or more expandable finger to peel the plaque at a subintimal space without use of one or more of an incision into the subintimal space and a blade. - View Dependent Claims (86, 87)
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Specification