Patent ID: 8506984

Claim:
A drug eluting medical device comprising: an implantable medical device; at least one coat of material comprising equal weight percent concentrations of a therapeutic agent, EVA and BMA affixed to the surfaces of the implantable medical device, the material initially being in a solution having a 3 to 7.5 weight percent total solid concentration; an altered microstructure on a surface on the at least one coat formed by annealing the at least one coat to a temperature about 20 degrees greater than the highest glass transition temperature (Tg) of the EVA and BMA in the presence of a high vacuum having a pressure of 1 Torr (1 Torr=1 mmHg) or less for a period between 1 and 12 hours; and at least one second coat affixed to the altered microstructure, the second coat comprising only BMA.