(b)(4).Evaluation summary: visual and dimensional inspections were performed on the returned device.The reported torn material was confirmed although difficulty positioning and removing the guide wire could not be replicated in a testing environment as it was based on operational circumstances of the procedure.A review of the lot history record and complaint history could not be conducted, because the part and lot numbers were not provided.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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