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(b)(4).Returned for investigation a 50cc 8.0fr ultraflex intra-aortic balloon catheter (iabc) without the original packaging.The sample was returned in a cardboard box and was in a bio-hazard bag.Re-turned with the sample was the original packaging label which matches the returned and reported serial number.Upon return, the teflon sheath was noted on the iabc; blood was noted in the sidearm.The one-way valve was tethered and connected to the short driveline tubing.The bladder was noted loosely wrapped (or considered twisted).A bend to the iabc central lumen was noted at approximately 20cm from the iabc distal tip.Dried blood was noted on the exterior surfaces of the returned sample.No obvious blood was noted within the helium pathway.The customer photos were reviewed.The first photo shows an iab catheter with a twisted bladder, which is consistent with the reported complaint.The second photo shows the original packaging label with a serial number that matches the reported serial number.The bladder thickness was measured at six points with measurements ranging from 0.0071in-0.0078in 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 due to a blocked central lumen.Immediate push back on the syringe plunger was experienced.The blockage was most likely dried blood.The iabc was connected to an iabp with a lab inventory 50cc inflation driveline tubing.The iabc was inserted into the "t" tube and 100mmhg backpressure was applied.After the pumping was initiated, the iabc bladder was noted not fully inflating/unwrapping and was consistent with being twisted.The pump triggered a "high pressure" alarm within 2 minutes after pumping was initiated.The iabc was leak tested in accordance with testing methods from manufacturing procedure.During the leak test, the bladder did not fully inflate.The middle portion of the bladder had inflated but the proximal portion and distal portion of the bladder would not fully unwrap and was consistent with being twisted.No leaks were detected.A lab inventory 0.025in guidewire was back loaded through the distal tip.No resistance was noted; the guidewire was able to advance through the injection lumen.Some blood and debris was noted.An attempt to aspirate and flush the catheter was unable to be successfully completed before inserting the guidewire.Another attempt to aspirate and flush the catheter was successfully completed.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 "failure to unwrap" is confirmed.During the investigation, the distal tip and proximal portion of the iabc bladder was noted twisted and the bladder would not fully inflate or un-wrap 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 twisted bladder.The probable root cause of the complaint is manufacturing related.Corrections have been established for this issue as a result of a corrective and preventive action, and this device was manufactured prior to the release of corrective actions.
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