Medical devices for applying biomaterials for coating, pro-healing, sealing, supporting and separating the surfaces of tissues that can act as barriers, depots for drug delivery, and provide structural scaffolding, including, implantable medical devices to support and prevent the collapse of surrounding tissue, arteries and veins; stents; catheters; stent delivery system and scaffold delivery system for the placement of implantable scaffolds comprising artificial materials for maintaining tissue contour; medical guidewires