Current information is insufficient to permit a conclusion as to the cause of the event.Review of device history records show the lot released with no recorded anomaly or deviation.(b)(4).Review of manufacturing history found no evidence of product non-conformance and device likely left the manufacturer conforming to print.Examination of the device confirmed the reported condition, as thread damage was observed on the connecting bolt.A conclusive root cause of the event cannot be determined with the available information.There are warnings in the package insert that state that this type of event can occur: under care and handling, it states, "surgical instruments are subject to wear with normal usage.Instruments,which have experienced extensive use or excessive force, are susceptible to fracture.Surgical instruments should only be used for their intended purpose.".
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