|
Investigation - evaluation: a review of the complaint history, device history record, specifications, quality control and visual inspection of the returned device was conducted during the investigation.One double ended wire guide was returned for evaluation.Upon examination of the returned product, the proximal solder joint between the mandril and safety wire cannot be located.There is some discoloration/possible remnants of solder or flux in the area where solder should be.Biomatter is also present on the entire device.The wire's coil is intact on both the proximal and distal ends, but unraveled in the middle of the guide.Further visual examination discovered the weld connection opposite of the j-curve to have separated from the safety wire, resulting in coil elongation.The weld connection was found to be in tact.A further examination of the length of coil that was not elongated measured approximately 14.0 cm.The total length of elongated coil measured approximately 23.9cm.The safety wire and/or mandril wire exited the coil.A document based investigation evaluation was also performed.There is no evidence to suggest the product was not made to specifications.Review of device history record shows no nonconforming events which could contribute to this failure mode.It should be noted there were no other reported complaints for this lot number.Based on the information provided, examination of the returned device and the results of our investigation, a definitive root cause could not be determined.We will continue to monitor for similar complaints.
|