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US 7,604,662 B2Granted
Endoprostheses containing boride intermetallic phases
AssigneeBoston Scientific Scimed, Inc.
InventorsMatthew Cambronne, Jonathan S. Stinson, Barry O'Brien
Life of this patent
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Abstract
An endoprosthesis including an alloy having a matrix comprising titanium, niobium, or a combination thereof and a plurality of boride intermetallic phases within the matrix.
Claims32
An endoprosthesis comprising an alloy that includes
- (a) a matrix microstructure comprising titanium, niobium, or a combination thereof;
- and
- (b) at least one boride intermetallic phase within the matrix, wherein the alloy comprises at least 0.1 weight percent boron.
An endoprosthesis comprising an alloy that includes
- (a) a matrix microstructure comprising titanium, niobium, or a combination thereof, wherein the alloy comprises at least 65 weight percent niobium;
- and
- (b) at least one boride intermetallic phase within the matrix.
An endoprosthesis comprising an alloy that includes
- (a) a matrix microstructure comprising titanium, niobium, or a combination thereof;
- and
- (b) at least one boride intermetallic phase within the matrix, wherein boride intermetallic phases protrude from a surface of the alloy to create a micro-textured surface.
An endoprosthesis comprising an alloy that includes
- (a) a matrix microstructure comprising titanium, niobium, or a combination thereof;
- and
- (b) at least one boride intermetallic phase within the matrix, wherein the alloy has a 0.2% offset yield strength of between 50 and 110 ksi.
Dependencies are inferred from the claim text.