The user facility reported to terumo cardiovascular systems corporation that during cardiopulmonary bypass procedure, there was an issue with the forward flow of the circuit.As per sales representative, the perfusionist initiated hand cranking then changed the circuit.Product was changed out; delay of approximately 2 minutes; blood loss over 200 ml; surgery was completed successfully.
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This follow-up report is submitted to the fda in accord with applicable regulations - and as indicated by terumo cardiovascular system in the initial report submitted to the fda on february 14, 2017.(b)(4).A visual inspection was performed on the returned adapter sample upon receipt.No anomalies were noted anywhere on the device.The pump adapter was set up on a stockert pump driver.A pump sample was also returned with the adapter and that pump was set up on the pump adapter, and connected to a circuit, where saline was circulated at 2000 and 3000 rpm's while varying backpressure.Pressure readings were taken at 2, 4, 6, and 7 l/min flow rates.There were no anomalies with the component's functionality.The flow rates were compared to the ifu flow rate graph and were comparable and approximately the same.This same test was repeated while using a retention centrifugal pump sample from lot uk18.These test settings were repeated on the complaint pump sample and the retention sample while on the sarns drive motor.All results were compared against each other and found to be approximately the same.No functional anomalies were noted with the pump adapter.The reported event was not able to be recreated; therefore, the complaint was not confirmed and a definitive root cause was not able to be determined.It is possible that the pump had not been properly set up on the adapter, or the adapter not set up on the motor, causing forward flow to stop.Through communication with the customer contact, it is believed that the cause of the event is due to perfusionist error, and it is not believed that there are any functional issue with the terumo devices all available information has been placed on file in quality management for appropriate tracking, trending and follow up.
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