H6.Investigation codes: updated.Investigation summary: one used decontaminated sample (b)(6) 7mm blu suctionaid sub-assy 1/ea was returned for investigation without its original packaging.Under visual inspection a tear in the cuff was noticed.During manufacturing process, the devices are 100% inflation tested, which includes inflating each device cuff and leaving for a 12-hour period.Reductions in pressure over this time are considered a failure and the device would be rejected.The inflation test was repeated on the received sample.It was found that it was not even possible to inflate the cuff as it leaked so badly.The customer's complaint was confirmed.Due to the fact that the cuff leak was not observed prior to use, and because there were visible signs of use, it is most probable that the reported failure occurred during tracheostomy procedure or during use due to contact with a sharp edge.A device history record could not be completed as no lot number was received.
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