Method for manufacturing an atherectomy cutter having a positive angle of attack
First Claim
Patent Images
1. A method for manufacturing an atherectomy cutter comprising the steps of:
- forming a cutter blank having a first cylinder with a first diameter a second cylinder with a second diameter, and a substantially uniformly tapered section therebetween;
forming a passageway substantially through said cutter blank to create walls having a substantially similar thickness;
creating a pair of substantially, diametrically opposed flats on said tapered section, each said flat having a proximal end, a distal end, and a substantially planar section therebetween; and
removing said wall of said tapered section between said flats to create a plurality of blades, each said blade having at least one cutting edge defined by said flat and a respective side surface oriented at an angle from said flat.
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Abstract
A method for manufacturing an atherectomy cutter having a positive angle of attack which includes the following steps: forming a rod having a longitudinal axis into a cutter blank having a first cylindrical section, a second cylindrical section, and a uniformly tapered section therebetween; boring an axial passageway through the cutter blank to create walls of substantially similar thickness in each section of the cutter blank; grinding a pair of diametrically opposed flats on the external surface of the uniformly tapered section of the cutter blank; and removing the wall portions of the tapered section between the flats to create a pair of blades.
52 Citations
15 Claims
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1. A method for manufacturing an atherectomy cutter comprising the steps of:
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forming a cutter blank having a first cylinder with a first diameter a second cylinder with a second diameter, and a substantially uniformly tapered section therebetween; forming a passageway substantially through said cutter blank to create walls having a substantially similar thickness; creating a pair of substantially, diametrically opposed flats on said tapered section, each said flat having a proximal end, a distal end, and a substantially planar section therebetween; and removing said wall of said tapered section between said flats to create a plurality of blades, each said blade having at least one cutting edge defined by said flat and a respective side surface oriented at an angle from said flat. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for manufacturing an atherectomy cutter comprising the steps of:
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providing a cutting blank having a tubular first section, a tubular second section, and a tubular tapered section which connects the first section to the second section; creating two spaced apart flats on the tapered section; and creating at least one blade by substantially removing the tapered section between at least two of the flats. - View Dependent Claims (14, 15)
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Specification