Atherectomy cutter with arcuate blades
First Claim
1. 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.
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Accused Products
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.
140 Citations
5 Claims
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1. An atherectomy cutter which comprises:
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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. - View Dependent Claims (2, 3, 4, 5)
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Specification