A steerable, conformable, drug eluting balloon catheter device may comprise a catheter stem with one or more balloon element(s), themselves comprised of one or more segment(s) arranged radially or axially along the length of the device, and may allow precise deployment of vascular interventional devices, including coring devices and/or placement of stents, and may also allow targeted, specific placement of selected diagnostic or therapeutic materials on the walls of a vascular structure during a cardiovascular intervention procedure.
