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(b)(4).The customer returned one, opened cath-lab sheath intro kit including the sheath assembly with dilator for analysis.Signs of use were observed inside the hemostasis body.The dilator was also returned inserted through the sheath.Visual analysis revealed that the inner seal was not positioned correctly inside the hemostasis cap.It appeared to cave inwards.The cap was removed, and this observation was confirmed.The seal was removed from the hemostasis body.The seal was still spherical; however , microscopic examination revealed pinch and tear marks along the outer edge.Further microscopic examination of the slits on the valve also revealed evidence of tearing.No physical defects or anomalies were observed with any portion of the cath-lab body, dilator, or cap.The hemostasis cap was removed to analyze the seal.Dimensional analysis was performed on one of the seal slits.The slit measured 0.66mm, which is not within the specification limits of 0.89-1.14mm per dimension a in seal product drawing.Functional analysis could not be performed on the sheath involved with this complaint due to the nature of the damage.Manufacturing was contacted as part of this complaint.They agreed that an inserted dilator would not be able to pass through the valve slits due to the positioning within the hemostasis body.They also indicated that the small tear/pinch marks on the outer edge of the seal indicated that the seal may not have been correctly assembled inside the hemostasis body, which resulted in it to move out of position when the customer attempted to pass the dilator through the sheath during use.Further analysis is needed by the manufacturing site regarding the positioning of the seal.Likewise, further analysis is needed by the supplier regarding the slits measuring below specification.A device history record review was performed, and a relevant finding was identified.A non-conformance was initiated for batch 14p23a0251 to address the issue of a sheath valve assembly separation.The report of a sheath valve separation was confirmed through complaint investigation of the returned sample.Visual analysis revealed that the inner seal was mispositioned inside the hemostasis body/cap.Small pinch/tear marks were also observed along the outer edge of the seal.Dimensional analysis also revealed that one of the slits on the seal measured below specification.Based on the customer report, the sample received, and the comments from manufacturing, the root cause is manufacturing related.A nonconformance was initiated to further investigate the issue of the valve separating and the slits measuring below specification.Teleflex will continue to monitor and trend for reports of this nature.
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