Qn# (b)(4).The customer returned one dilator/sheath assembly for evaluation.No definite signs of use were observed on the sample.Visual analysis revealed the dilator body was cracked directly adjacent to the dilator hub.This resulted in the dilator hub to be partially separated from the extrusion.This defect likely contributed to the difficulty locking the dilator into the sheath during usage of the device.The total length of the dilator body measured to be 7 11/16" which is within specifications of 7 1/12"-8" per product drawing.The outer diameter of the dilator measured to be 0.107" which is within specifications of 0.107-0.110" per product drawing.The dilator inner diameter at the proximal end could not be accurately measured due to the damage; however, the inner diameter at the distal tip measured.040" which is within the specification limits of.039"-.041" per the dilator graphic.The instructions-for-use (ifu) provided with this kit instructs the user, "holding sheath in place, remove spring-wire guide and dilator".The dilator was able to advance and retract from the returned sheath with minimal resistance.Despite the damage, the hub of dilator appeared to snap into the hub of the sheath.A device history record review was performed, and no relevant findings were identified.The ifu provided with this kit warns the user, "do not apply excessive force in removing guide wire or sheath/dilator.If withdrawal cannot be easily accomplished, determine cause using fluoroscopic guidance and request further consultation, if necessary." the customer report of a dilator/sheath would not lock during use was confirmed through complaint investigation.Visual analysis revealed that the dilator hub had become partially separated from the extrusion.This likely resulted in the connection difficulty encountered by the customer.The dilator passed all relevant dimensional and functional inspection, and a device history record review was performed with no relevant findings.A capa has previously been initiated to further investigate this issue.The capa investigation indicates the probable root cause is design related.Corrective actions have not yet been implemented.Teleflex will continue to monitor and trend for reports of this nature.
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