A treated medical device is provided. This medical device may be a stent and may have been treated by placing it into a treatment chamber, creating a buffer zone of compressible fluid between the medical implant and the inside surface of the treatment chamber, and applying a treatment to the medical implant when the medical implant is at least partially positioned within the treatment chamber. When the treatment is applied to the medical implant this may include forcing therapeutic out of an injection nozzle and towards the medical device. In some instances the buffer zone of compressible fluid may cause the medical implant to rotate about a longitudinal axis in a first direction when the medical implant is at least partially positioned within the treatment chamber.