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Related to (b)(6).The hospital reported that during an endoscopic vein harvesting procedure, vv 6 accessory pack co2 would not flow through btt.Another btt opened via accessory kit.Co2 flow only at a 1-2, even though setting remains at 5.After procedure they tried to trouble shoot and was not able to duplicate the issue.Procedure completed with original hp2 device and the last opened btt.Minimal procedure delay due to troubleshooting issue.There were no patient injuries.
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Trackwise#: (b)(4).Updated sections: b4, g3, g6, h2, h3, h6, h10 the device was returned to the factory for evaluation on (b)(6) 2024.An investigation was comducted on 04/10/2024.A visual inspection was conducted.Signs of clinical use and evidence of blood was observed.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 # 3000308152 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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