Investigation has been performed in our laboratory.In the case of the visual inspection of the cannula, a broken plug has been found at the end of the cannula.The stopper is cut off in the cannula, but, it cannot be determined whether the plug is too tight or too tight in the cannula.The complaint that the stopper in the cannula has broken off can be confirmed.However, whether it was broken off by a fixed seat, by damage or material defect could not be ascertained and therefore not confirmed.Also, complaint has been investigated by (b)(4).Based on the instruction for use, it is indicated that ¿remove the vent-plug from the connector by turning it and avoid bending the vent-plug in the process.To enable smooth detachment, the vent-plug must be loosened and put back into place again before use by turning.¿the trials have been performed in an inappropriate way to the warning, and the samples were damaged similar to the complaint.A review of the device history record was performed with no abnormality found.Based on this investigation the complaint is not related to our production.A trend search has been performed (search for material (b)(4) and issue: (b)(4) connector)which came to following results: two additional complaints were recorded.Although the failure was confirmed by the laboratory, the most probable root cause could be determined as a user failure.Since the reported failure did not contribute to a death or serious injury no corrective action is needed.This data will be handled through a designated maquet trending process.If at trend occurs, it will be escalated to qa management for review and determination if further investigation is necessary.Due to this no further action will be completed.
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