Rotational Atherectomy Device And Method Of Use
4 Assignments
0 Petitions
Accused Products
Abstract
A rotational device for removing an occlusion from inside a tubular structure, the device comprising a flexible drive shaft for insertion into a tubular structure and an abrasive element on the drive shaft to abrade an occlusion when the drive shaft rotates. The device includes a solid support element on the drive shaft configured so that, when the device is being used to remove an occlusion from an inner surface of a curved section of the tubular structure, the abrasive element is biased toward the inner surface by the solid support element.
67 Citations
36 Claims
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1-26. -26. (canceled)
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27. A rotational device for removing an occlusion from inside a tubular structure, the device comprising:
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a flexible drive shaft for insertion into a tubular structure and an abrasive element on the drive shaft to abrade an occlusion when the drive shaft rotates; and a solid support element on the drive shaft configured so that, when the device is being used to remove an occlusion from an inner surface of a curved section of the tubular structure, the abrasive element is biased toward the inner surface by the solid support element.
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28. A rotational device, comprising:
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a flexible drive shaft having a distal end section formed from at least one helically wound wire and an abrasive element on the distal end section; and a solid support element on the distal end section spaced from the abrasive element. - View Dependent Claims (29, 30, 31, 32)
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33. A method of using a rotational device to remove an occlusion from the inner surface of an interior wall of a curved section of a tubular structure, the method comprising the steps of:
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inserting a drive shaft having an abrasive element into the tubular structure; positioning the abrasive element in the curved portion of the tubular structure so that a solid support element on the drive shaft biases the abrasive element towards the inner surface of the interior wall; and rotating the drive shaft so that the abrasive element abrades the occlusion. - View Dependent Claims (34, 35, 36)
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Specification