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The complainant was unable to provide the lot number.Therefore, the manufacture and expiration dates are unknown.It was reported the device was not used past its expiry date.(b)(4).Visual examination of the returned complaint device found that the balloon and the catheter of the device had no damages.Microscopic inspection was done and found that the balloon had no damages.Functional analysis was performed, and the balloon was inflated without a problem; however, the balloon would not hold pressure due to a pinhole in the distal section on the body of the balloon.It is possible that interaction with the scope or any other surface during the procedure could create friction on the balloon, causing the balloon pinhole during the procedure.Therefore, the most probable root cause is adverse event related to procedure.A manufacturing batch record review was unable to be performed as the lot number is unknown.However, a ship history review was performed to identify the most probable lots, and a device history record (dhr) review on the most probable lots did not identify any deviations within manufacturing/service processes that could have contributed to the event.
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