It was reported that in jun, during use, the machine suddenly gave an alarm "ventilator failure, check apl valve", and the machine was unable to operate normally.Upon inspection, an error code was found reporting "v044, v041".After replacing the motor, the problem was resolved.No patient involved.The investigation and test are preformed on the return sample.Based on known information , motor defect will affect automatic ventilation.Then ventilator fail alarm will be generating the appropriate way.Doctor can switch ventilation mode to man/spont (safety mode), so that there will be no injury to the patient.With the investigation could confirmed that the carbon brush or commutator was abnormal wearied.The number of similar cases, related to the same root cause, is within the expected range of the respective risk assessment and thus accepted.The field failure rate is subject to permanent monitoring by the responsible product quality board and is rated as acceptable for all components in question.Keep on monitoring similar cases.
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