Qn#(b)(4).The device lot number was not provided; therefore , a dhr review could not be conducted.There was one piece of representative sample returned for investigation but only the proximal part of the catheter was received.Based on the complaint description, it was reported that the nurse managed to evacuate a major urine retention but had difficulty to inflate the balloon.Non-inflation could be due to various reasons such as leak balloon, faulty valve, faulty syringe, improper syringe insertion or blocked lumen or funnel.Investigation was conducted by inflating the inflation lumen of the proximal part of the catheter with red color water.However, there was no blockage or leak found along the lumen which resulted in non-inflation.The red color water was successfully flow through the inflation lumen.However, further investigation could not be conducted since the returned sample was incomplete.In our current standard operating procedure, the raw balloons 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 during this process.Non-inflation balloon may due to several reasons.However, the returned sample was incomplete and after investigation there was no blockage or leak which may result in non-inflation encountered during testing.Therefore, this complaint could not be confirmed.
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