(b)(6).(b)(4).Investigation result: a visual examination of the returned complaint device found that the balloon.The catheter was noted to be kinked.Microscopic analysis was performed, and it was noticed that the balloon had a pinhole, which confirms the reported event of the balloon leaked.During the microscope inspection the balloon was dissected to inspect the ro markers (distal- medium-proximal) and no defects were noted.Functional evaluation was performed, and the balloon was inflated without problem; however, the balloon would not hold pressure due to a pinhole located in the proximal section on the body of the balloon.This problem is likely due to factors encountered during the procedure, such as the interaction between the balloon and the scope or any other surface during the procedure that could have created friction, resulting in the found failure of balloon pinhole.Additionally, the catheter kink may be related to some factors such as; handling of the device, the technique used by the physician, the interaction with the scope and normal procedural difficulties encountered during the procedure could have affected the device.Therefore, the most probable root cause is adverse event related to procedure.A review of the device history record (dhr) was performed and confirmed that this device met all material, assembly and performance specifications.A labeling review was performed and from the information available, this device was used per the instructions for use (ifu)/product label.
|