The user facility returned a single case, which contained 22 companion device samples, to the manufacturer for physical evaluation.A visual examination of all returned device samples found the bloodline blood sets to be acceptable; no defects identified.One companion sample was then tested using a 2008t hemodialysis machine for simulated use.During the simulated use test, fluid flowed through the lines without issue and there were no observations of a leak.The device worked as intended with no noted abnormalities and no defects identified.A records review was performed on the reported lot.An investigation of the device manufacturing records was conducted by the manufacturer.There were no deviations or non-conformances identified during the manufacturing process which could be associated with the reported event.The device history record [dhr] of this product was reviewed and no nonconformance reports or other abnormalities during the assembly of this lot were found.The product involved met specifications.The investigation into the cause of the reported problem was not able to confirm the failure mode.Although the evaluation of the companion sample confirmed that the device functioned fully as designed and met specification, a definitive conclusion regarding the complaint incident cannot be reached without physical examination of the actual complaint device.Therefore, the complaint has been deemed unconfirmed.
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