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(b)(4) the customer returned one cath-lab sheath and dilator for evaluation.A large amount of biological material was observed within the sheath assembly.Visual analysis revealed a large hole in the seal within the hemostasis valve body.After failing functional inspection , the hemostasis cap was removed from the assembly and the seal was further analyzed.It was revealed that the seal was incorrectly positioned within the hemostasis cap.Once removed, it was identified that the seal was intact and whole.After receiving feedback from manufacturing, the seal slit was dimensionally inspected.One of the seal slits were measured to be 0.4318mm, which is not within the specification limits of 0.89-1.14mm per the seal product drawing.The sheath was flushed through the sidearm using a lab inventory syringe.When flushing, water was observed to exit out of the hemostasis valve, which is not the intended function of the sheath.Performed per ifu statement, "prepare sheath for insertion by flushing through side arm.".After removing the hemostasis cap to further analyze the seal, the seal was repositioned within the cap and the components were reassembled.The assembly was flushed again and flushed as intended.The hemostasis valve and psi device were then leak tested according to three different parameters per amrq-000037 rev.09.1) low pressure leak resistance test (amrq-000037 section 6.1.2): this states, "there shall be no leakage past the hemostasis valve when using a pressure of 20-21kpa (3psi)." the psi was attached to a lab leak tester.With the distal end of the sheath occluded, the sheath was pressurized to 21kpa for 30 seconds.No leaks were observed.2) liquid leakage - hemostasis valve with dilator advanced: the parameters from the low-pressure leak resistance test were repeated with a lab inventory dilator inserted into the sheath.The sheath was pressurized to 42 kpa for 30 seconds and no leaks were observed from any portion of the device.3) high pressure leak resistance test (amrq-000037 section 6.1.3): this states, "when tested in accordance with iso 11070: annex e, using a test pressure of 300-320kpa (43.5-46.4psi), there shall be no leakage sufficient for form a falling drop." the psi was attached to the lab leak tester.With both the distal end of the sheath and the hemostasis valve occluded, the device was pressurized to 300kpa for 30seconds.No leaks were detected from any portion of the psi, which indicates that the sheath assembly is intact.The dilator was additionally inserted through the sheath.Major resistance was encountered from inside the hemostasis valve and the dilator was not able to fully advance and snap into the cap, which is not the intended function of the assembly.Upon removal of the dilator, the internal seal was observed clinging to the surface of the dilator.Manufacturing and r & d were consulted as a part of this complaint investigation.Manufacturing could not replicate the failure mode of mispositioning the seal within the hemostasis valve body.However, they stated that the defect to the purchased seal component could potentially contribute to the mispositioning of the seal in the assembly during removal of the dilator, and thus, result in the leakage observed by the customer.Therefore, the supplier may have caused or contributed to this event.A device history record review was performed and a relevant finding was identified.For material s-08803-003, shop order, qa inspection and non-conformance were reviewed for all component batches and non-conformances were initiated for 14p23a0030 in regards to sheath valve assembly separation.The customer complaint of a valve leak was confirmed through complaint investigation of the sample as received.Visual analysis revealed that the internal seal was incorrectly positioned within the hemostasis valve body.This is not the intended assembly.The assembly was tested for leaks again once the seal was reassembled within the hemostasis valve body, and no leaks were identified.However, further functional analysis was performed with the dilator, and it was revealed that the seal clings to the surface of the dilator when the dilator is withdrawn.Dimensional analysis revealed that the slits on the internal seal are not within specification.Manufacturing was additionally consulted, and they confirmed that the defect to the seal could potentially contribute to the mispositioning of the seal in the assembly, and thus, the leakage observed by the customer.A device history record review was additionally performed, and revealed multiple relevant findings related to a sheath valve assembly separation.Based on the customer report, the sample received, and the comments from manufacturing, the root cause is likely supplier related.A non-conformance was initiated to further investigate this complaint issue.Teleflex will continue to monitor and trend on complaints of this nature.
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