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US 9,717,610 B2Granted
Fiber reinforced composite stents
AssigneeAbbott Cardiovascular Systems Inc.
InventorsBin Huang, David C. Gale
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Abstract
Polymeric composite stents reinforced with fibers for implantation into a bodily lumen are disclosed.
Claims7
A method of making a stent comprising:
- disposing a plurality of fibers in an extruder for forming a structure;
- conveying a matrix polymer into the extruder, the fibers comprising a material having a melting temperature greater than a melting temperature of the matrix polymer,
- wherein the material of the fibers comprises a polymer which is biodegradable,
- wherein the matrix polymer is biodegradable and is different from the fiber polymer,
- wherein the matrix polymer has a lower modulus than the fiber polymer and the matrix polymer has a glass transition temperature (Tg) below body temperature,
- wherein a degradation rate of the matrix polymer is lower than a degradation rate of the fiber polymer;
- forming the structure with the extruder at a temperature greater than the melting temperature of the matrix polymer and less than the melting temperature of the material, wherein at least some of the fibers becoming embedded within the matrix polymer;
- and
- fabricating a stent from the structure.
6 more elements
Dependencies are inferred from the claim text.