It was initially reported that ventilation was difficult or hardly possible due to the breakage of the ergostar.The pictures of the ergostar provided for this case showed that there were hairline cracks in the material of the connector on the patient's side.No deep cracks or spalling were visible, so that no restriction of ventilation was to be expected.Based on this information, the case subsequently was assessed as not reportable.Through previous complaints, it has become known that disinfectants and certain oils (e.G.Mcp oil) can damage the plastic and produce the present crack pattern.It has been reported by the user that oil or some other agent has been used to create an easier connection between the tube and the ergostar.Therefore, it can be assumed that the use of a lubricant was the cause of the cracking.Since the hospital in question no longer uses lubricants to connect the tube and the ergostar, the symptoms have no longer occurred.A possible leakage caused by the damage is detected before use in the leakage test.If a (relevant) leakage occurs during operation, it will also be detected and alarmed by the connected basic unit.The number of similar cases, related to the same root cause, is within the expected range of the respective risk assessment and thus accepted.
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