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US 8,524,166 B2Granted
Stent and delivery system with reduced chemical degradation including a Chitooligosaccharide
AssigneeAbbott Cardiovascular Systems Inc.
InventorsBin Huang, Lothar W. Kleiner, John Stankus
Life of this patent
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Abstract
Stents and delivery systems with reduced chemical degradation and methods of sterilizing the same are disclosed.
Claims8
A stent comprising:
- a polymeric portion;
- optionally, a drug;
- and
- a chemical degradation-reducing substance that reduces or prevents chemical degradation of a polymer of the polymeric portion, the optional drug, or both, the chemical degradation arising from exposure to radiation during sterilization;
- wherein the substance comprises a chitooligosaccharide obtained by partial chitosan hydrolysis.
2 more elements
Dependencies are inferred from the claim text.