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It was reported that, during a maxillofacial injuries surgery, the twinfix screw fractured while implantation.The fractured pieces were removed from the patient.The surgery was resumed, after a non-significant delay, with a back-up device.No further complications were reported.
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H10 h3, h6: the reported device was received for evaluation.A visual inspection of the returned device found that it is not in its original packaging.The insertion device was returned with the proximal end of the anchor, the suture strings and the needles installed as shipped.The distal end of the anchor had fractured away and is deformed.The distal tip of the insertion device and the anchor fragment have debris on them.Based on the condition of the product material found during visual inspection, it was determined the device damage was caused by the application of improper/excessive force.Additional material testing is not required.A review of device records showed there were no indications to suggest that the product did not meet manufacturing specification upon release for distribution.A complaint history review found similar reported events.The instructions for use was reviewed and found to include conditions of off label use and technique specifics, as well as precautions and warnings related to the use of the device.A risk management review found that the reported failure and/or harm was documented appropriately, and there were no indications to suggest the anticipated risk is not adequate.A review of the material specifications found that no burrs, cracks, or contamination are allowed.A certificate of conformance must be provided.The root cause was associated with unintended use of the device.Factors that could have contributed to the reported event include excessive force on the device, excessive torque on the device, attempted correction of a damaged device, off-axis insertion, improper preparation of the insertion site, or an inadvertent impact event inconsistent with normal use.No containment or corrective actions are recommended at this time.
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