The user facility reported to terumo cardiovascular that the shunt sensor does not calibrate.It is unknown when this event occurred, whether the product was changed out, or if there was any effect on the patient or results of the surgery.Due to the unknown information for this event, it is being reported.Terumo continues to attempt to gain more information regarding this event from the user facility.
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This follow-up report is submitted to fda in accord with applicable regulations and as indicated by terumo cardiovascular systems in the initial report submitted to the fda on (b)(6) 2018.Upon further investigation of the reported event, the following information is new and/or changed: additional device information - added exp date, date received by manufacturer, indication that this is a follow-up report, follow-up due to additional information, device manufacture date.The actual sample was not returned for evaluation.However, a retention sample from the affected product code/lot number was obtained and visually inspected, no anomalies were noted.Gas calibration was attempted and successfully able to pass the calibration without any issues.The reported event could be replicated and the actual root cause cannot be determined.Potential root causes for the calibration error include opening the pouch more than 24 hours prior to calibration, contaminated buffer solution, or damage or mishandling of the shunt sensor.All available information has been placed on file in quality management for appropriate tracking, trending, and follow-up.
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