Event estimated date.A visual and dimensional inspection was performed on the returned device.The reported failure to advance could not be tested as it was based on operational circumstances.In this case, it is possible that the device interacted with the anatomy during advancement resulting in the reported failure to advance.Additional manipulation of the device during advancement/retraction possibly contributed to the noted stretched/bunched inner and outer member; however, this cannot be confirmed.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 did not indicate a lot specific quality issue.The investigation was unable to determine a conclusive cause for the reported failure to advance.There is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.
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