(b)(4).This case was reviewed and investigated according to the manufacturer¿s policy.Attempts to obtain patient information have been unsuccessful.Attempts to obtain the patient information were made via email.All reasonably known patient information is included in this report.No information available.The implant or explant dates are not applicable to this device.Not applicable for this device.Concomitant medical products: no information available.The returned device was visually and microscopically inspected.The scanner body and distal floppy tip were separated from the distal shaft and not returned for investigation.The edges of the damaged distal shaft were irregular, portions were stretched, missing and torn off with the scanner body.The probable cause of the reported failure is mechanical strain, as evidenced by the stretched material observed at the damaged portion of the distal shaft.However, it was not possible to conclusively determine how the failure occurred.Recall: do not apply to this submission.The instructions for use (ifu) cautions: prior to use, carefully inspect the scanner and catheter body for bends, kinks or other damage.Do not use a damaged or suspected damaged catheter.Protect the catheter tip from impact and excessive force.Do not advance the guide wire against significant resistance.If binding occurs between the catheter and the guide wire while inside the patient, carefully remove both the wire and catheter and do not use.The catheter should never be forcibly inserted into lumens narrower than the catheter body or forced through a tight stenosis.The manufacturing documentation for this device was reviewed and the device met all quality and manufacturing release criteria.
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