Rotational Device with Eccentric Abrasive Element 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 drive shaft (10) for insertion over a guidewire into a tubular structure and an abrasive element (20) on the drive shaft having its centre of mass offset from a longitudinal axis of the drive shaft. A solid counterweight (30D) is disposed on the drive shaft spaced from the abrasive element and having its centre of mass offset from the longitudinal axis of the drive shaft so that the abrasive element moves in an orbital path around said axis to abrade an occlusion from inside the tubular structure when the drive shaft rotates around the guidewire.
71 Citations
25 Claims
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1-15. -15. (canceled)
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16. A rotational device, comprising:
a drive shaft having a distal end section formed from at least one helically wound wire and an abrasive element on the distal end section having its centre of mass offset from a longitudinal axis of the drive shaft, and a solid counterweight on the distal end section spaced from the abrasive element and having its centre of mass offset from the longitudinal axis of the drive shaft. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
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25. A method of using a rotational device to remove an occlusion from inside a tubular structure, comprising the steps of:
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inserting a drive shaft with an abrasive element thereon over a guidewire into a tubular structure, the abrasive element having its center of mass offset from a longitudinal axis of the drive shaft; and rotating the drive shaft over the guidewire so that a solid counterweight on the drive shaft having its center of mass offset from the longitudinal axis of the drive shaft causes the abrasive element to move in an orbital path around said axis to abrade an occlusion from inside the tubular structure.
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Specification