Other, other text: investigation completed on a smiths tracheostomy|pvc - portex tubes blue line classic four pictures received with revealed small tear in cuff.Samples received by shm investigation: one (1) used sample was returned for evaluation p/n 100/515/070 with lot number reported unknown; the sample was received in used conditions without its original packaging.During functional testing submerging under water, which reveled burble coming out of the small tear.A review was looked at the dhr and other engineering.
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