Qn#(b)(4).The customer returned one 3-lumen cvc for analysis.Signs of use in the form of biological material were observed inside the medial extension line.After performing functional testing (see below), a small blockage was encountered when flushing the medial extension line.A long pin gage was inserted through the medial lumen and large quantities of congealed biological material was observed exiting the extension line.Once cleared, the medial extension line flushed as intended.No other defects or anomalies were observed.The catheter body length from the juncture hub to the distal tip measured 167mm which is within the specification limits of 157mm-177mm per the catheter product drawing.The catheter body outer diameter measured 2.42mm which is within the specification limits of 2.39mm-2.49mm per the catheter extrusion product drawing.The medial extension line outer diameter measured 2.13mm which is within the specification limits of 2.13mm-2.21mm per the medial extension line extrusion product drawing.The medial extension line inner diameter measured 1.4478mm which is within the specification limits of 1.420mm-1.500mm per the medial extension line extrusion product drawing.A lab inventory syringe filled with water was attached to each of the three extension lines and flushed.When flushing the medial extension line, a blockage was encountered.A long pin gage was inserted through the medial lumen.Large quantities of biological material were observed exiting the medial lumen.Once cleared , the medial extension line flushed as intended.Performed per ifu statement, "flush each lumen with sterile normal saline for injection to establish patency and prime lumen(s)".A device history record review was performed, and no relevant findings were identified.The ifu provided with the kit informs the user, "flush each lumen with sterile normal saline for injection to establish patency and prime lumen(s)".The ifu also states, "ensure catheter patency prior to use.Do not use syringes smaller than 10 ml (a fluid filled 1 ml syringe can exceed 300 psi) to reduce risk of intraluminal leakage or catheter rupture".The report of a blocked extension line was confirmed through complaint investigation.Visual and functional analysis revealed that the medial extension line was blocked due to a build-up of congealed biological material.Once cleared, the medial extension line flushed as intended.The catheter met all relevant dimensional requirements, and a device history record review was performed with no relevant findings.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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