Polymer composite stent with polymer particles

摘要

Polymer composite implantable medical devices, such as stents, and methods of manufacturing such devices are disclosed.

主权项

1. An implantable medical device comprising a structural element, the structural element including a composite, the composite having a plurality of polymer nanoparticles dispersed within a polymer matrix, wherein each of the polymer nanoparticles is a discrete, single phase within the polymer matrix, wherein the polymer nanoparticles have a lower modulus than the matrix polymer, and wherein the composite comprises a higher toughness than the matrix polymer, wherein the polymer nanoparticles are biodegradable, wherein the polymer matrix is poly(L-lactide) and the nanoparticles comprise less than 5 wt % of the composite.