Chamfered stent strut and method of making same
First Claim
Patent Images
1. An implantable prosthesis comprising:
- struts; and
crowns connecting said struts, said struts having an interior surface and an exterior surface, wherein edges of said interior surface comprise substantially right angles, and wherein edges of said exterior surface are chamfered.
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Abstract
A prosthesis for implantation in a blood vessel includes struts with a cross-section having a flat base with angled edges on the inner surface and chamfered edges on the outer or exterior surface. The base angled edge is substantially a right angle, while the outer or exterior surface has edges that are chamfered with either round or angled chamfers. The chamfers could be manufactured by either machining the chamfer into the stock material, or by tumbling the stent in a tumbler to abrasively wear the edges to form a chamfer.
128 Citations
21 Claims
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1. An implantable prosthesis comprising:
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struts; and
crowns connecting said struts, said struts having an interior surface and an exterior surface, wherein edges of said interior surface comprise substantially right angles, and wherein edges of said exterior surface are chamfered. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of making an implantable prosthesis comprising the steps of:
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a.) cutting a first chamfer on an outer diameter edge of a proximal end of a cylinder;
b.) cutting a second chamfer in the outer diameter of said cylinder at a location distal of said first chamfer;
c.) parting a ring from said cylinder, said ring including said first and said second chamfers; and
d.) bending said ring to form a sinusoidal module having struts and crowns. - View Dependent Claims (17, 18, 19)
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20. A method of making an implantable prosthesis comprising the steps of:
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a.) laser-cutting or etching the prosthesis from a tube of material;
b.) placing said prosthesis around a mandrel;
c.) tumbling said prosthesis and said mandrel in a tumbler containing abrasive material to wear and round the exterior edges of said prosthesis; and
d.) removing said prosthesis from the mandrel. - View Dependent Claims (21)
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Specification