Chemically and biologically modified medical devices

摘要

Biocompatible materials for use in vascular applications or for implantation have been engineered, combining human recombinant tropoelastin with other synthetic or natural biomaterials to form protoelastin. The materials can be in the form of elastin films on metal or polymer substrates, laminates of alternating polymer and elastin, blends of polymer and elastin, or elastin crosslinked with or tethered to polymer or metal. These are mechanically stable, elastic, strong and biocompatible (i.e., not thrombogenic and promoting adhesion of cells, especially human endothelial cells), not eliciting a foreign body response. Plasma polymerization of substrate is shown to enhance biocompatibility, especially when used to bind elastin or other protein to the substrate.

主权项

1. A vascular medical device comprising a surface consisting of a plasma polymerized biocompatible polyhexane or polyacetylene having nitrogen incorporated therein on a metallic, ceramic, carbon or polymeric substrate of the device which contacts blood, wherein thrombogenicity of the substrate is decreased by the plasma polymerization in nitrogen or a mixture of argon and nitrogen.