The catheter inched down the middle-aged man's coronary artery. As he lay on the operating table at Apex Heart Institute, a hospital in Gujarat, India, the instrument inflated a tiny balloon to widen the blocked vessel and installed a stent to keep it that way. The angioplasty went off without complications, but there was one big anomaly: The surgeon was not in the room, or even the building.
展开▼
