(b)(4).The customer returned one, 3-lumen cvc for analysis.Signs-of-use were observed inside the proximal extension line.After failing functional testing, a blockage was encountered inside the proximal extension line.A long pin gage was inserted through the line.Large quantities of congealed biological material were observed exiting the proximal skive hole.Once removed, the proximal line was able to flush as intended.The catheter body length from the juncture hub to the distal tip measured 316mm , which is within the specification limits of 307mm-327mm per the catheter product drawing.The catheter body outer diameter measured 2.46mm, which is within the specification limits of 2.39mm-2.49mm per the catheter extrusion product drawing.A lab inventory syringe filled with water was attached to all three extension lines and flushed.The distal and medial lines flushed as intended.When flushing the proximal line, a total blockage was encountered.A long pin gage was passed through the proximal line.Large quantities of congealed biological material exited the proximal skive hole.Once removed, the proximal line flushed as intended.Performed per ifu statement, "flush lumen(s) to completely clear blood from catheter".A device history record review was performed, and no relevant findings were identified.The ifu provided with the kit informs the user, "ensure catheter patency prior to use.Do not use syringes smaller than 10 ml to reduce risk of intraluminal leakage or catheter rupture".The ifu also states, "flush lumen(s) to completely clear blood from catheter".The report of a blocked extension line was confirmed through complaint investigation.Visual and functional analysis revealed that the proximal extension line was blocked due to a build-up of congealed biological material.Once removed, the line flushed as intended.A device history record review was performed, and no relevant findings were identified.Based on the customer report and the sample received, unintentional use error likely caused or contributed to this event.Teleflex will continue to monitor and trend for reports of this nature.
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