Silver implantable medical device
First Claim
1. An implantable medical device, comprising:
- a structure adapted for introduction into a patient, the structure being comprised of a base material and a layer of elemental silver having a uniform thickness posited on said base material, the elemental silver layer further having a specific surface energy density of about 20 to 30 dyne per centimeter.
3 Assignments
0 Petitions
Accused Products
Abstract
A silver implantable medical device 10 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, medicament material utilized with the implantable stent.
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Citations
14 Claims
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1. An implantable medical device, comprising:
a structure adapted for introduction into a patient, the structure being comprised of a base material and a layer of elemental silver having a uniform thickness posited on said base material, the elemental silver layer further having a specific surface energy density of about 20 to 30 dyne per centimeter. - View Dependent Claims (2, 3, 4, 5)
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6. An implantable medical device, comprising:
a structure adapted for introduction into a patient, the structure being comprised of a base material wherein elemental silver, silver ions or a combination thereof in a bioactive effective amount is impregnated into a surface matrix of the base material, the elemental silver, silver ions, or combination thereof further have a specific surface energy density of about 20 to 30 dyne per centimeter. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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13. An implantable vascular device, comprising:
stent structure adapted for introduction into a vascular system of a patient, the stent structure comprising elemental silver or silver alloys having at least 50% by weight silver, the elemental silver, or silver alloys further have a specific surface energy density of about 20 to 30 dyne per centimeter. - View Dependent Claims (14)
Specification