Qn#(b)(4).The batch card(s) for the complaint lot(s) was reviewed all samples passed qa inspection.An actual sample was returned for investigation and show no obvious abnormality upon visual inspection.The sample was subjected for inflation test using water according to its required balloon capacity.The balloon was inflated successfully without any difficulty.The balloon was then subjected for deflation test with no issue at all.Non-deflation could be due to several reasons such as improper fixation of syringe to the valve, faulty valve and blockage of inflation lumen.In a standard practice, an empty syringe without plunger is also recommended to be used to drain off the fluid by gravity and avoid creation of vacuum effect and ease deflation process.Besides that, based on the ifu, it was advice to cut the shaft near the entry site as to allow the liquid to flow out of the balloon if the valve fails to deflate the balloon.Other remarks: in our current standard operating procedure, the products are subjected to 100% visual and any defective raw balloon will be discarded before sent to the next process.Upon completion of assembly process, the finished catheter will be again subjected to 100% balloon inspection, 20 minutes leak test and 100% deflation process.Catheter with defective balloon will be culled out during this process.Balloon could not be deflated may due to several reasons.However, the returned sample shows no issue during investigation per claimed.Therefore, this complaint could not be confirmed.Additional method code: 26.
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