Qn#(b)(4).Returned for investigation was a 30cc 7.0fr rediguard intra-aortic balloon catheter (iabc).Returned with the sample was the supplied 30cc inflation driveline tubing and ap tubing (short extension tubing and 60" tubing); all components were visually inspected, and no abnormalities were noted.Upon return, the peel away sheath was noted on the iabc.The one-way valve was connected and tethered to the short driveline tubing.The bladder was fully unwrapped.The iabc central lumen was noted kinked/damaged, consistent with flattened surfaces at approximately from 5.8cm to 53.7cm from the iabc distal tip.Dried blood was noted on the exterior surfaces of the returned iabc.No blood was noted within the helium pathway.No other damage or abnormalities were noted to the returned sample.The one-way valve was tested and passed.A vacuum was pulled on the one-way valve, and it held for at least 1 minute and then 30 seconds five separate times.The iabc central lumen was aspirated and flushed using a 60cc lab-inventory syringe.No abnormalities or debris was noted.The iabc was leak tested and no leaks were detected.Full inflation was achieved.The device passed the leak test.A lab inventory 0.025in guidewire was back loaded through the iabc distal tip.Resistance was noted at approximately 51.9cm from the iabc distal tip, which was consistent with the previously noted kinks/flattened central lumen.The guidewire was able to advance through the central lumen.No blood or debris was noted.The guidewire was front loaded through the iabc luer.Resistance was noted at approximately 31cm from the iabc luer, which was consistent with the previously noted kinks/flattened central lumen.The guidewire was able to advance through the central lumen.No blood or debris was noted.A device history record (dhr) review was conducted for the lot number with no relevant findings.The device passed all manufacturing specifications prior to release.The reported complaint for an "aortic balloon counter pulsation catheter that failed to pass the guidewire" is confirmed.Upon return, the iabc central lumen was noted damaged and was consistent with a flattened appearance.Resistance was noted upon loading a guidewire into the iabc central lumen.No other damage was noted to the central lumen.Based on a review of the device history record (dhr), the product met specification upon release; however, the specifications were not met during the complaint investigation due to the kinked/flattened central lumen.The root cause of the complaint is undetermined.A most probable potential cause is customer handling.No further action required at this time.This will be monitored for any developing trends.
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