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 broken vent plug cannot be pulled out of the connector without tools,since the head is missing.The complaint that the stopper in the cannula has broken off can be confirmed.Also, complaint has been investigated by maquet (b)(4).According to the instruction for use,in the ¿warnings and precautions¿ part, 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.According to this investigation the complaint is not related to our production,the most probable root cause could be determined as an user failure.Because, if the process mentioned in instruction for use performed, the vent plug would be broken before treatment.This situation shows that the product was not used according to the ifu warning.A trend search has been performed which came to following results: two additional complaints were recorded.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 quality assurance management for review and determination if further investigation is necessary.Due to this no further action will be completed at this time.
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