The Palmaz-Schatz coronary stent consolidated, during the 1990s, the revolution begun by Grüntzig by offering a metallic intravascular scaffold able to keep the artery open after angioplasty. Julio Palmaz patented the design in 1985; Richard Schatz adapted it for coronary use. Its FDA approval in 1994 marked the transition of coronary intervention to a phase of greater stability and global expansion. Within the interventional tree, the stent turns angioplasty from a pioneering technique into a mass therapeutic standard.