Since the device was not returned, it is impossible to proceed to actual evaluation.But, it is confirmed from the device history record that the suspected device had been manufactured with no significant issue and passed all the inspections.Since it is difficult to reconstruct the situation at that time in the lab and limited into, it is hard to find out exact root cause for this complaint.We recognize the risk of stent occlusion, and have been conducted risk management control.On our user manual, it is mentioned that stent occlusion.We will monitor this complaint occurrence for same model.Medical option: physician denies that the device attributed to the pt death.This report is retrospective report due to fda foreign inspection warning letter.The suspected device is not register to united states fda and it had not been shipped into the united states.
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