(b)(4).The customer reported the catheter would not inject.The customer returned one snaplock adapter, one epidural catheter, and lidstock.The snaplock adapter and catheter were received connected together.The returned components were visually examined with and without magnification.Visual examination of the returned snaplock adapter revealed the snaplock adapter appears typical with no observed defects or anomalies.Visual examination of the returned catheter revealed the catheter appears used.Adhesive can be seen on the outer extrusion and biological material can be seen within the inner coils of the catheter especially at the distal end of the catheter.A manual flow test was performed using the returned components.An attempt was made to thread a laboratory inventory wire through the epidural catheter from the proximal end until an occlusion was found.Other remarks: microscopic examination where the catheter was blocked indicated biological material is present between the catheter's inner coils.A device history record review was performed on the epidural catheter with no relevant findings.A corrective action is not required at this time as the condition of the sample received and the information provided indicates that operational context caused or contributed to this event.The reported complaint of catheter not being able to inject was confirmed based on the sample received.The returned epidural catheter was found to be completely occluded with biological material.Microscopic examination where the catheter was blocked indicated biological material is present between the catheter's inner coils at approximately 10.3cm from the distal tip.A device history record review was performed on the epidural catheter with no evidence to suggest a manufacturing related cause.Therefore, based on the condition of the sample received and the information provided, operational context caused or contributed to this event.Teleflex will continue to monitor and trend related events.
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