Coated implantable medical device
First Claim
1. An implantable medical device, comprising:
- a catheter or a portion of a catheter adapted for introduction into a patient, the catheter or a portion of a catheter having at least one surface;
a non-porous coating layer applied to the at least one surface of the catheter or a portion of a catheter, the coating layer being one of the group consisting of adsorbent and absorbent;
at least one layer comprising paclitaxel or a derivative of paclitaxel posited over the at least one surface of the catheter or a portion of a catheter and over the non-porous coating layer, wherein the at least one layer comprising paclitaxel or a derivative of paclitaxel is adsorbed on or absorbed into the at least one coating layer; and
at least one porous layer posited over the at least one layer comprising paclitaxel or a derivative of paclitaxel,wherein the at least one porous layer and the non-porous coating layer include the same polymer.
3 Assignments
0 Petitions
Accused Products
Abstract
A coated 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 coating layer 16 posited on one surface of the structure; and at least one layer 18 of a bioactive material posited on at least a portion of the coating layer 16, wherein the coating layer 16 provides for the controlled release of the bioactive material from the coating layer. In addition, at least one porous layer 20 can be posited over the bioactive material layer 18, wherein the porous layer includes a polymer and provides for the controlled release of the bioactive material therethrough. Preferably, the structure 12 is a coronary stent. The porous layer 20 includes a polymer applied preferably by vapor or plasma deposition and provides for 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, and merely by condensation of a monomer vapor.
302 Citations
20 Claims
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1. An implantable medical device, comprising:
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a catheter or a portion of a catheter adapted for introduction into a patient, the catheter or a portion of a catheter having at least one surface; a non-porous coating layer applied to the at least one surface of the catheter or a portion of a catheter, the coating layer being one of the group consisting of adsorbent and absorbent; at least one layer comprising paclitaxel or a derivative of paclitaxel posited over the at least one surface of the catheter or a portion of a catheter and over the non-porous coating layer, wherein the at least one layer comprising paclitaxel or a derivative of paclitaxel is adsorbed on or absorbed into the at least one coating layer; and at least one porous layer posited over the at least one layer comprising paclitaxel or a derivative of paclitaxel, wherein the at least one porous layer and the non-porous coating layer include the same polymer. - View Dependent Claims (2, 3, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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4. A medical device comprising:
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a catheter or portion of a catheter adapted for introduction into a patient, the catheter or portion of a catheter having at least one surface; at least one layer comprising paclitaxel or a derivative of paclitaxel posited over the at least one surface of the catheter or portion of a catheter; at least one porous layer posited over the at least one layer comprising paclitaxel or a derivative of paclitaxel, the porous layer being porous when first posited over the at least one layer comprising paclitaxel or a derivative of paclitaxel; and at least one coating layer posited over the at least one surface of the catheter or portion of a catheter; wherein the at least one layer comprising paclitaxel or a derivative of paclitaxel is posited over at least a portion of the at least one coating layer, wherein the at least one layer comprising paclitaxel or a derivative of paclitaxel is adsorbed on or absorbed into the at least one coating layer, and wherein the at least one coating layer provides for a controlled release of the paclitaxel or a derivative of paclitaxel from the at least one layer comprising paclitaxel or a derivative of paclitaxel. - View Dependent Claims (19, 20)
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Specification