FILE - This Wednesday, July 22, 2015, file photo shows St. Jude Medical corporate headquarters, in Little Canada, Minn., just north of St. Paul. Medical device maker St. Jude Medical is warning doctors and patients about a rare battery defect in some of its implantable heart devices that can cause them to fail much earlier than expected. The company said Tuesday, Oct. 11, 2016, the batteries should be replaced immediately after patients receive an electronic, vibrating alert from the device. Normally patients have up to three months to have batteries replaced. But the company said a small subset of its heart-shocking defibrillators can fail within 24 hours of the alert. (Glen Stubbe/Star Tribune via AP, File)
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