(b)(4).Device history record review: a review of the device batch records was performed including raw materials, in-process, finished goods and sterilization and there were no non-conformances or capa's opened in relation to the nature of the complaint.The devices met all raw materials, in-process, finished goods and sterilization specifications upon release of the product.All dimensional verification, packaging and delivery system inspections were acceptable.The device evaluation: the lost image failure was confirmed by the investigation.The evaluation determined that a weld leg was fractured and the device failed the channel match test, and no image appeared.During the evaluation of the device, it was noted that the blue vestamid tubing had a tear/cut in it and that a portion of the rx lumen, which is embedded in the vestamid tubing, was protruding.Although the root cause of this failure cannot be definitively determined, this defect typically occurs when the proximal end of the guide wire is inadvertently pulled toward the distal tip of the device.The guide wire in turn may tear/cut the vestamid tubing resulting in a portion of the rx lumen being pulled away from the vestamid tubing.A clinical assessment of this failure is being conducted and the results of the assessment will be included in a supplemental report.
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