Boston Scientific develops devices that let physicians treat disease through catheters and small incisions instead of open surgery. Cardiology is the anchor: stents, heart rhythm devices, structural heart implants and tools for closing the heart's left atrial appendage. Additional franchises cover endoscopy, urology and neuromodulation. The company grows through a steady cadence of internal development and tuck-in acquisitions, and its products ride two durable currents in medicine, aging populations and the shift toward minimally invasive care.