heart devices

The story of MitraClip, a device Dr. Oz helped invent to treat faulty heart valves, is a cautionary tale about the science, business and regulation of medical technology.

Some pumps used in end-stage heart failure caused a buildup of biological material that blocks blood flow from the device to the heart’s aorta. The FDA’s recall affects nearly 14,000 devices.

Medicare paid at least $1.5 billion over a decade to replace seven types of defective heart devices, a government watchdog says. The devices apparently…