A physician reported the codman disposable perforator failed to disengage during cranial surgery resulting in dura mater damage.The perforator malfunctioned while making the second burr hole at the tent.The procedure was completed with the product.No surgical delay was reported.The manufacturer of the drill used with the perforator was stryker core2 /signature.It is unknown if the drill was electric or pneumatic, it is unknown if the perforator clicked into place in the drill, and it is unknown if the recommended spring tests were being performed between each burr hole.The patient is in follow-up.No further information was provided.
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The perforator was returned for evaluation.Unique device identification (udi): (b)(4) or (b)(4).Device history record (dhr) - the lot number for the product was not reported, and the lot number could not be read off the returned product.Therefore, a dhr review is not possible.Failure analysis - the perforator unit was inspected using the unaided eye.Unit was lightly soiled and had a worn eo label.No other anomalies were noted.The "ifu" testing was performed with no observed anomalies.The functional testing was performed using the same protocol it underwent at finished goods testing prior to release.The unit was found to perform as intended and fulfilled the acceptance criteria.In the failure analysis that was performed, the returned unit was found to work as intended, and met all acceptance criteria.The complaint could not be verified through failure analysis.The root cause is undetermined and was unable to be confirmed in the complaint evaluation.Product was received for analysis and the investigation could not confirm the complaint.
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