Dr. Fouad Bachour explains a CardioMem to patient Joe Jones before Bachour and his team planted the device in Jones at Hennepin County Medical Center in Minneapolis on February 26, 2015. (Elizabeth Flores/Minneapolis Star Tribune/TNS)
For those with heart failure risks, a device that warns of an impending heart crisis can be very useful.
Joe Jones has been hospitalised half a dozen times for heart failure.
