The device was manufactured on 01/20/1989 and has no repair history at zimmer surgical since july 2011.Investigation revealed the cutter and roller were dull.It was also noted that the handle and screws were damaged.Prior to repair, the device produced an acceptable test mesh; however, the device was outside calibration specifications.Repair of the device included replacement of the roller, cutter, handle, screws, ratchet spring and sliding pin.The reported event was not reproduced during testing; however, the lack of calibration of the device and the wear to the cutter blades can lead to undesirable mesh.Per the instructions for use, "the meshgraft ii tissue expansion system should be returned every 12 months for inspection and preventive maintenance.Annual factory calibration checks are strongly recommended to verify continued accuracy." additionally, per the instructions for use, "the expected longevity of the meshgraft ii tissue expansion system is ten years.Zimmer recommends that units over this age should be replaced because they have exceeded their normal useful life." the device was repaired and returned to the customer.
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