Atherectomy cutter with arcuate blades
AssigneeInterventional Technologies, Inc.
InventorAndrew F. Farr
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Abstract
An over-the-wire atherectomy cutter includes a hollow cylindrical sleeve which is coaxially attached at its proximal end to a hollow rotatable catheter. The periphery of the distal end of the sleeve is sharpened. A hollow, substantially cylindrical body is coaxially positioned within the sleeve in an interference fit. A frustum-shaped portion is formed on the distal end of the body and tapers inwardly toward a hollow cylindrical distal tip. The frustum-shaped portion has two openings which extend the axial length of the frustum-shaped portion, to create a pair of straight blades that connect the body to the tip. The straight blades are contiguous to the sharpened distal end of the sleeve to establish a pair of diametrically opposed arcuate cutting edges that are positioned on the distal end of sleeve.
Claims5
An atherectomy cutter which comprises:
- a hollow cylindrical sleeve defining a longitudinal axis and having a sharpened distal edge;
- a pair of straight blades each said straight blade extending distally from said distal edge of said sleeve and angled from said distal edge toward said axis to establish a pair of arcuate blades, on said distal edge between said straight blades;
- and
- a hollow cylindrical body having a proximal end and a distal end, said straight blades being attached to said distal end of said body, said body being held within said sleeve an interference fit therewith.
Dependencies are inferred from the claim text.