Device evaluation: the zso-7-12 device of lot number c1879635 involved in this complaint was not available for evaluation.With the information provided, a document-based investigation was conducted.Document review: prior to distribution all zso-7-12 devices are subject to a visual inspection and functional checks to ensure device integrity.These inspections and functional checks are outlined in internal procedures in place at cirl.A review of the manufacturing records for zso-7-12 of lot number c1879635 did not reveal any discrepancies that could have contributed to this complaint issue.The review of relevant manufacturing records confirms the failure mode has or has not previously occurred with the current lot number.Based on the information available to date, there is no evidence to suggest that there are any manufacturing issues associated with lot c1879635.It should be noted that the instructions for use (ifu0045) states the following: ¿visually inspect with particular attention to kinks, bends and breaks.If an abnormality is detected that would prohibit proper working condition, do not use.Notify cook for return authorization¿.¿care must be exercised when straightening the pigtail curls in order to avoid kinking or breaking the stent¿.There is no evidence to suggest the user did not follow the ifu.Root cause review: a definitive root cause could not be determined from the available information.A possible root cause could be attributed to excessive force, whereby the device kinked as it was being straightened making it impossible to load onto the wire guide.Summary: the complaint is confirmed based on customer testimony.According to the initial report, the patient did not experience any adverse effects due to this occurrence.Complaints of this nature will continue to be monitored for potential emerging trends.
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