(b)(4).The prod has not been requested back for investigation is the laboratory of the mfr as the failure is already known.The malfunction has been thoroughly investigated within a previous complaint.The device was cleaned and a performance test was executed.The device passed the established specification for performance testing.Therefore the cause of this failure was determined not to be attributed to a device related malfunction.This data will be handled through a designated maquet trending process.A supplemental medwatch will be submitted if add'l info becomes available.(b)(4).Add'l info: the prod mentioned is a tubing set and the included affected component has the contributing design function of the quadrox-id which is registered.
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