The hospital reported that during an endoscopic vessel harvesting procedure, vasoview hemopro 2 co2 line connected to the btt port showed 'occluded' on the gas regulator throughout the procedure.Air was flowing through the gas line but was showing 'occluded' when connected to the btt port.The harvester would adjust the tightness of the connection (to be a little looser), and it would work intermittently.This was the second kit of the case.This kit was used to complete the procedure.There was no delay on the procedure aside from a couple minutes to open this second kit.There was no patient harm.Related to tw (b)(4).
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Trackwise#: (b)(4).The device was returned to the factory for evaluation on 03/15/2024.An investigation was conducted on 03/19/2024.A visual inspection was conducted.Signs of clinical use and evidence of blood was observed.The harvesting device, cannula and btt were returned for evaluation.There were no visual defects observed on the intact cannula or the c-ring.There were no visual defects observed on the intact harvesting device.There were no visual defects observed on the intact btt.A mechanical evaluation was conducted.The btt was able to be inflated.No visual defects were observed on the silicone btt.A 5cc syringe, filled with saline was attached to the co2 line on the btt and squeezed the syringe to spray the saline.There was no backflow observed in the co2 line.Based on the returned condition of the device as well as the evaluation results, the reported failure "improper flow or infusion" was not confirmed.Specific actions for the reported failure mode are being maintained and documented under maquet's corrective and preventive action (capa) system.The lot # 3000341381 history record review was completed.There were no ncmrs, rework, or deviations documented for the reported lot number.Based on the dhr/lhr review results, it was determined that there is no relation between the batch manufacturing process and the reported failure.
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