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A theoretical investigation was conducted, as there were no photos and no goods available.No further details have been provided.All cuffs of the tracheostomy cannulas are subjected to a 100% test as part of the quality inspection during production.Leaking products are discarded.However, after a passed a priori cuff check, the leaking problem occured during some days of use.It is therefore confirmed that the product was originally in perfect condition, including a tight cuff-system and a working cuff inflation via the inflation line.It can be assumed that sharp-edged structures in the area of the cuff have led to the leakage during use especially as the end of the application time may have been reached or already exceeded.Nevertheless, the cause cannot be conclusively determined due to the missing goods.
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