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US 2015/0305899 A1Published application
Branched polyhydroxyalkanoate systems for bioresorbable vascular scaffold applications
AssigneeAbbott Cardiovascular Systems Inc.
InventorsJoel E. Harrington, Mary Beth Kossuth, James Oberhauser
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Abstract
An implantable medical devices such as a stent that includes sparse comb polyhydroxyalkanoate (PHA) systems is disclosed. The stent includes a stent body, scaffold, or substrate made partially or completely of polymer material including PHA.
Claims20
A stent comprising:
- a scaffold comprising a branched polyhydroxyalkanoate (PHA) polymer that is a random copolymer having (R)-3-hydroxybutyrate (3HB) units and (R)-3-hydroxyalkanoate (3HA) units with a structure of [(R)-3HB]x—[(R)-3HA]1-x, where x is the mol % of (R)-3HB units,
- wherein the 3HA units have side groups of at least three carbon atoms,
- wherein the scaffold is radially expandable in a blood vessel of a patient.
A stent comprising:
- a scaffold comprising a blend of a polylactide—(PLA) based polymer and a branched polyhydroxyalkanoate (PHA) homopolymer,
- the PHA homopolymer including (R)-3-hydroxybutyrate (3HB) units and (R)-3-hydroxyalkanoate (3HA) units having a structure of [(R)-3HB]x—[(R)-3HA]1-x, where x is the mol % of (R)-3HB units,
- wherein the 3HA units have side groups of at least three carbon atoms,
- wherein the scaffold is radially expandable in a blood vessel of a patient.
1 more element
A stent comprising:
- a scaffold comprising a copolymer of a polylactide—(PLA) based polymer and a branched polyhydroxyalkanoate (PHA) polymer,
- the PHA polymer including (R)-3-hydroxybutyrate (3HB) units and (R)-3-hydroxyalkanoate (3HA) units having a structure of [(R)-3HB]xc—[(R)-3HA]1-xc, where xc is the mol % of (R)-3HB units,
- wherein the 3HA units have side groups including at least three carbon atoms,
- wherein the scaffold is radially expandable in a blood vessel of a patient.
1 more element
Dependencies are inferred from the claim text.