Advanced Bionics (AB), a global leader in developing advanced cochlear implant systems, announced today that it has notified the US Food & Drug Administration (FDA) that it will voluntarily recall its HiRes 90K cochlear implant device and is retrieving all unimplanted devices in distribution. This action is being taken in response to two confirmed instances where the product experienced a malfunction requiring explantation. These recipients experienced severe pain, overly loud sounds and/or shocking sensations at 8-10 days after initial activation of their device.   http://www.fda.gov/Safety/Recalls/ucm234901.htm