Methods and devices for removing material from a vascular site
First Claim
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1. A device for removing material from a vessel wall at a vascular site, comprising:
- a cage having a longitudinal axis and configurable from a radially collapsed configuration to a radially expanded configuration relative to the longitudinal axis of the cage, the cage having an inner surface defining an interior space when the cage is in its radially expanded configuration, and a plurality of openings in communication with the interior space when the cage is in its radially expanded configuration,a material removing element operatively connected to the cage and positioned within the interior space of the cage, the material removing element being movable within the interior space of the cage along the longitudinal axis of the cage to remove material from the vessel wall.
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Abstract
An expandable cage is expanded within a narrowed region of a blood vessel. The expandable cage has openings therein so that plaque protrudes through the openings when the cage is expanded. A material removing element passes within the cage to remove the plaque extending into the openings. The openings are preferably formed by integrally formed elements which provide a smooth internal surface. The material removing element passes along the smooth internal surface when removing the plaque. A collection bag is coupled to the material removing element to capture the material which has been removed.
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Citations
20 Claims
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1. A device for removing material from a vessel wall at a vascular site, comprising:
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a cage having a longitudinal axis and configurable from a radially collapsed configuration to a radially expanded configuration relative to the longitudinal axis of the cage, the cage having an inner surface defining an interior space when the cage is in its radially expanded configuration, and a plurality of openings in communication with the interior space when the cage is in its radially expanded configuration, a material removing element operatively connected to the cage and positioned within the interior space of the cage, the material removing element being movable within the interior space of the cage along the longitudinal axis of the cage to remove material from the vessel wall. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification