Qn#(b)(4).The batch card(s) for the complaint lot(s) was reviewed and passed qa inspection.6 representative samples were returned for investigation.Visual examination was performed on the returned representative catheters and no material degradation or abnormalities observed.The entire components appeared to be in good condition.The representative samples then were inflated with 10ml of distilled water.The balloons inflated normally and no difficulties during inflation.The representative samples then deflated using an empty syringe without any problem arose.Leak balloon may happen due to several reasons such as in contact with sharp object during use i.E., contact with clamper, kidney dish/tray, overinflating or contact with contradict lubricants such as oil based antiseptic phenols or their derivatives, grease, petroleum jelly, petroleum spirit, paraffin or other relatives' compounds.Balloon could also leak as a result of balloon had come in contact with bladder or kidney stone during use for patient with bladder or kidney stone history.Based on literature, salty like sediment could also possibly lead to balloon tear.Refer to figure 1 below adopted from an article from robinson j (2003): deflation of a foley catheter balloon, nursing standard which stated that encrustation stick on the catheter balloon may be break into small particles and scratch the catheter surface and patient urethra resulting into bleeding, scarring or trauma.In our current standard operating procedure, the products are subjected to 100% visual inspection and any 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 100% balloon inspection and 20 minutes leak test.Catheter with defective balloon will be culled out.In summary, the returned representative samples did not exhibit any failure of balloon leak.Based on the investigation conducted, the balloons were still able to retain its inflated condition.Therefore, this complaint could not be confirmed as stated.
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