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(b)(4).During processing of this complaint, attempts were made to obtain complete event, patient and device information.The product was not returned to abbott vascular for analysis.Return of the device and sheath may have further aided the analysis.The investigation was unable to determine a conclusive cause for the reported difficulty removing the protective sheath.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 identified no other similar incidents from this lot.There is no indication of a product quality issue with respects to the design, manufacture, or labeling of the device.
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