EPTFE VALVES

摘要

Stent, stent coverings, and methods of making medical devices useful in vascular valves are disclosed. Stent coverings include layered, oriented, or calendered polymer films.

主权项

1. A medical device comprising:
a polymer layer composite comprising
an inner polymer film comprising an anisotropic polymer and having an orientation direction;a mid-layer polymer film comprising an anisotropic polymer and having an orientation direction at an inner orientation angle to the inner polymer film; andan outer polymer film comprising an anisotropic polymer and having an orientation direction at an outer orientation angle to the mid-layer polymer film; anda medical device disposed between the mid-layer film and the outer polymer film.