In this Oct. 31 2018 photo, George and Brenda Davis look at his nerve stimulator and medical documents at their home in Milton, Fla. George Davis had three Medtronic spinal-cord implants between 2003 and 2007 after a car accident mangled his back. They temporarily reduced some of his pain, but he said the non-rechargeable batteries that were supposed to last for years never did and he tired of multiple surgical removals. In 2015, he decided to try a Boston Scientific device. But he said he soon started feeling pain shooting down his back and legs and a burning sensation at the implant site. Brenda Davis said Boston Scientific disregarded her complaints after her husband suffered a life-threatening infection following implant surgery. (AP Photo/Holbrook Mohr)
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