Investigation: the investigation was carried out by the aesculap technical service department (ats).It has been ascertained, that an old version of the hose was used.This hose was prone to flaws which could lead to a burst.Therefore this hose has been changed via the internal change request: (b)(4).Batch history review: the device history files have been checked for the available lot number and found to be according to the specification, valid at the time of production.Conclusion and root cause: this failure occurred most likely due to design error.Corrective action: a change has been initiated to eliminate the failure, see change.(b)(4).
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