Qn#(b)(4).The sample was returned by the customer and sent to the manufacturing site for evaluation.The manufacturing site reports "the check valve of the return sample is functional.It can be deflated and inflated normally.The cuff material of the device was observed loss of its resilience; when it was inflated with 20ml of air (i.E.1x recommended air volume), the air in the sample was unable to fill up the whole cuff.When it was inflated with 40ml (2x of recommended air volume), the cuff profile of sample looks like a photo of the device provided by the customer (swelling on one side).Based on record, there was pdac2s manufactured instead of pdac25 as reported.All products released were performed 100% leaking test.This reported failure mode did not happen during the test.Dhr was reviewed.No abnormality was found.There was no similar incident on the same lot reported from the rest of the world.Customer is kindly advised to inflate lma flexible su with the "maximum inflation volumes (ml)" per ifu.Over-inflation could damage the lma airway device to an irreparable condition.".
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