(b)(4).The reported complaint for "blood entered the balloon" was confirmed based on visual inspection of the returned sample.The customer returned a 40cc 7.5fr ultraflex intra-aortic balloon catheter (iabc) without the original packaging for investigation.The sample was returned in a cardboard box and was in a clear ziplock bag (inp-1, inp-2).Upon return, the iabc bladder was noted withdrawn through the teflon sheath; the sheath was noted on the iabc bladder membrane and covering the iabc distal tip (inp-6).The proximal end of the sheath was noted at approximately 72.6cm from the iabc luer (inp-4).Buckling to the teflon sheath extrusion was noted approximately from 12.5cm to 15.1cm from the distal end of the teflon sheath (inp-7).The one-way valve was tethered to the short driveline tubing (inp-5).The exposed portion of the bladder was fully unwrapped (inp-6).The iabc central lumen was noted broken at approximately 65.2cm from the iabc luer end (inp-8).Various bends were noted to the iabc between 27.0cm to 48.5cm from the iabc luer end (inp-9).A bend was also noted near the iabc bifurcate (inp-10).A dried yellow media was noted on the exterior surfaces of the returned sample.Dried blood was noted on the exterior surfaces of the returned sample.Dried blood was also noted within the iabc helium pathway.Since the iabc bladder was noted withdrawn through the sheath, an in-service has been requested to review the instructions for use (ifu) with the customer.The instructions for use (ifu) states: "do not remove arrow iab through hemostasis sheath introducer or hemostasis device.Once unwrapped (unfurled), balloon profile will not allow passage through the sheath and attempted removal in this manner may result in arterial tearing, dissection or balloon damage." the bladder thickness was measured at six points with measurements ranging from 0.0059in-0.0065in and was within specification of process document.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 according to quality system document.An attempt to aspirate and flush the catheter using a 60cc lab-inventory syringe was unable to be successfully completed and pushback to the syringe was noted; the central lumen was likely blocked by dried blood.The blockage was unable to be cleared.The one-way valve was connected to the short driveline tubing and a vacuum was pulled on the iabc.While maintaining the vacuum, the sheath was removed from the bladder/iabc without difficu lty (anp-1).Upon removal and visual inspection, damage was noted to the iabc central lumen and bladder (anp-2, anp-3).The iabc central lumen within the flex-tip assembly area was noted damaged; the polyimide (part of the flex tip assembly) was noted no longer attached and separated from the inner cannula (iabc central lumen) at approximately 6.5cm from the iabc distal tip (anp-2).The iabc bladder was noted with a leak site at approximately 16.1cm to 17.7cm from the iabc distal tip; the leak site is consistent with being ripped/torn and the damage likely resulted from the broken central lumen.During review of the damages and overall iabc, it was noted that a section of the iabc central lumen was not returned with the sample.The missing section of the central lumen was from 65.2cm from the iabc luer end to the damaged/separated flex tip assembly.The iabc was leak tested in accordance with testing methods from manufacturing procedure.A leak was immediately detected from the iabc distal tip and bladder.The leak from the iabc distal tip is consistent with the previously confirmed damaged/separated central lumen.The leak from the iabc bladder is consistent with being ripped/torn which likely resulted from the damaged/broken central lumen.No other leaks were detected.A lab inventory 0.025in guidewire was back loaded through the iabc distal tip.The guidewire exited the central lumen and entered the bladder at the location of the flex-tip assembly separation.Some blood was noted.The guidewire was front loaded through the iabc luer.Resistance was noted at approximately 9.3cm, 27.9cm, 32.2cm, and 36.4cm from the iabc luer.The guidewire could not advance at approximately 45.2cm from the iabc luer.No blood or debris was noted.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 blood in the helium pathway.The root cause of how the blood entered the helium pathway is undetermined.No further action required at this time.Teleflex will continue to monitor and trend on complaints of this nature.Other remarks: n/a.Corrected data: n/a.
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