Beginning (b)(4) 2012, us and (b)(4) customers were sent an urgent pt safety advisory informing them of the need for proper care and preventative maintenance of their zimmer aire dermatome.Customers were informed that improperly maintained instruments may cause donor site injuries or result in damage to the graft.Customers were requested to contact zimmer to schedule maintenance for the device in accordance with the instructions for use.The device was returned to the mfr for repair and eval.The service record indicated that device was manufactured on (b)(4) 2011 and was last repaired on (b)(4) 2012 for a lack of power issue.Eval of the device observed the device to operate very slowly with both the customer's and repair power supplies initially.The device then proceeded to operate normally on the customer's power supply.It was then observed that the device has been altered, as evidenced by the spliced wires within the device.Prior to repair, the device was outside calibration specs at all tested thickness settings.In post-repair, excessive corrosion of the exterior motor casing was observed.The customer's power supply showed no visible issues and the device met all functional specs during testing.Improper handling related to cleaning or sterilization of the unit most likely allowed moisture to enter the hand piece, corroding the motor over time and most likely causing the customer's reported event.Additionally, the alterations made to the electric dermatome likely contributed to the reported event.The device was serviced and returned to the customer.
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