Medtronic (NYSE:MDT) this month updated physicians on a warning it 1st issued in July 2011 about the batteries in its SynchroMed II implantable drug infusion pump.
The pumps are used primarily to treat chronic pain or severe spinal or cerebral spasticity. The issue, 1st reported in July 2009, relates to the formation of a filmy substance within the pump battery that can lead the device to shut down suddenly, causing a patient’s pain and symptoms to return or triggering withdrawal symptoms. Returned product analysis proved the failed devices’ alarms functioned as designed, Fridley, Minn.-based Medtronic said at the time.
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