Silver implantable medical device

Details Silver implantable medical device Silver implantable medical device

1997-02-24

1999-02-23

Yu, Mickey

Prosthesis (i.e., artificial body members), parts thereof, or ai

Arterial prosthesis

Stent structure

623 11, 623 12, 604 53, 604265, A61F 206

Patent

active

058739041

ABSTRACT:
A silver implantable medical device 29 includes a structure 12 adapted for introduction into the vascular system, esophagus, trachea, colon, biliary tract, or urinary tract; at least one layer 18 of a bioactive material posited on one surface of structure 12; and at least one porous layer 20 posited over the bioactive material layer 18 posited on one surface of structure (12) and the bioactive-material-free surface. Also included is a layer or impregnation of silver 45. Preferably, the structure 12 is a coronary stent. The porous layer 20 is comprised of a polymer applied preferably by vapor or plasma deposition and provides a controlled release of the bioactive material. It is particularly preferred that the polymer is a polyamide, parylene or a parylene derivative, which is deposited without solvents, heat or catalysts, merely by condensation of a monomer vapor. Silver is included as a base material, coating or included in a carrier, drug, medicant material utilized with the implantable stent.

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