(b)(4).During processing of this complaint, attempts were made to obtain complete event, patient and device information.Evaluation summary: the device was returned for analysis.Visual and dimensional inspections were performed on the returned device.The stent dislodgement and stent damage were confirmed.The difficulty removing the protective sheath could not be replicated in a testing environment due to the condition of the returned device.A review of the lot history record identified no manufacturing nonconformities issued to the reported lot that would have contributed to this event.Additionally, a review of the complaint history of the reported lot did not indicate a lot specific quality issue.Based on the information reviewed, there is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.The investigation was unable to determine a conclusive cause for the reported difficulties.
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It was reported that during preparation of a 2.50 x 33 mm xience alpine stent delivery system (sds), the protective sheath was stuck to the stent implant.While attempting to remove the protective sheath, the stent implant became dislodged from the balloon and the stent implant was stretched out.There was no reported patient involvement.There was no reported clinically significant delay in the procedure.No additional information was provided.
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