(b)(4).No serial number was reported.The serial number on the returned sample is (b)(6).The lot number (18f21g0035) reported on the complaint report does not match the lot number (18f22f0043) for the returned sample.Additional information received on 19 april 2023 indicates the returned sample is the correct iabc for this complaint.Returned for investigation was a 40cc 7.5fr ultraflex intra-aortic balloon catheter (iabc) with an original packaging carton that does not match the serial number/lot number of the returned sample.Upon return, the one-way valve was tethered to the short driveline tubing.The bladder was fully unwrapped.Damage/buckling to the outer lumen was noted at approximately 27.5cm to 29.5cm from the iabc distal tip.A bend to the iabc central lumen was noted at approximately 5cm from the iabc distal tip.A bend to the iabc central lumen was noted at approximately 9.4cm from the iabc luer end.A dried white media was noted within the iabc short driveline tubing.No obvious blood was noted on the iabc or within the helium pat hway; the catheter was likely cleaned prior to return.The bladder thickness was measured at six points with measurements ranging from 0.0065in-0.0068in.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 catheter's central lumen was successfully aspirated and flushed using a 60cc lab-inventory syringe.No abnormalities or debris were noted.The iabc was leak tested.Three (3) leaks were immediately noticeable from the bladder membrane.Under microscopic inspection, the leak sites are consistent with contact from a sharp object and were noted at approximately 3.5cm, 3.6cm and 5.6cm from the iabc distal tip.No other leaks were detected.A lab inventory 0.025in guidewire was back loaded through the iabc distal tip.Resistance was noted at approximately 76.2cm from the iabc distal tip, which is the location of the previously noted bend.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 9.4cm from the iabc luer, which is the location of the previously noted bend.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 occurrence rate is within acceptable risk limits.The reported complaint of iab blood in helium pathway is confirmed.During the investigation, numerous punctures consistent with contact from a sharp object were found on the iabc bladder membrane, which caused the reported complaint and can cause blood to enter the helium pathway.No other leaks were detected during functional testing.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 bladder leaks.The root cause of the bladder leaks is undetermined.The most probable potential cause of how the catheter came into contact with a sharp object is customer handling.No further action required at this time.This will be monitored for any developing trends.
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