(b)(4).The batch card(s) for the complaint lot(s) was reviewed and all passed qa inspection.One returned samples were carefully removed from polybag and visually inspected.Visual examination were conducted and observed that no abnormalities or design irregularities observed on returned samples.Based on complaint statement, it is likely that the balloon deflated after 2 week used because of a small pinhole on balloon.Further investigation was carried out by inflating the sample with air via an empty syringe was easy and smooth.However, balloon was not able to stay inflate.Closer examination under high magnification lens (50x magnifications) using dino-lite revealed the balloon have severe scratch marks found and multiple holes on the balloon surface.In our standard operating procedure, there are several stages of inspection carried out.The raw balloons were subjected to 100% visual inspection, defective raw balloon will be culled out before sent to the next process.Upon completion of assembly process, the finished catheter will be again subjected to the 1oo% balloon inspection and leak test whereby the inflated balloon will be left on a other remarks: leak test conveyor for approximately 20 minutes.Defective balloons will be culled out from the lot.Based on the investigation there is multiple scratch marks and holes found on the balloon sleeve which likely occurred due to contact with sharp or pointed objects, such as bladder/kidney stones and encrustation which causes leak to the balloon.Therefore this complaint is not confirmed.(b)(4).
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