Date of event: estimated.A visual and functional inspection was performed on the returned device and the following was noted: tear and hypotube bends.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 identified no other similar incidents reported from this lot.Balloon material tears can be affected by numerous factors such as balloon damage during manufacturing of the balloon material, materials, interactions with other devices, anatomical conditions, a previously implanted stent or insufficient preparation prior to use.The investigation was unable to determine a conclusive cause for the noted balloon tear.It is possible that during advancement the balloon interacted with the anatomy and or other devices used in the procedure caused a tear on the balloon resulting in a leak during attempts to inflate; however, this could not be confirmed.The noted bends on the hypotube likely occurred during packing for return analysis.There is no indication of a product quality issue with respect to manufacture, design or labeling.
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