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(b)(4).The customer returned one, 3-lumen cvc for analysis.Signs of use in the form of biological material were observed inside the catheter body.Visual analysis revealed that the distal extension line was separated.The point of separation was located at the juncture hub; however, a portion of the extension line was still molded within the juncture hub.Microscopic examination confirmed the separation and revealed that the edges were rough/jagged.Further analysis also revealed that the distal line extrusion was narrowed, which is indicative that undue force resulted in the line becoming stretched.In an area where narrowing was observed, the outer diameter of the distal line measured 1.43mm, which is below the specification limits of 1.68mm-1.78mm per the distal extension line extrusion product drawing.The inner diameter in an area of observed narrowing measured 0.9906mm, which is not within the specification limits of 1.14mm-1.24mm per the distal extension line extrusion product drawing.In an area where no narrowing was observed, the outer diameter of the distal line measured 1.69mm, which is within the specification limits of 1.68mm-1.78mm per the distal extension line extrusion product drawing.The inner diameter in an area where no narrowing was observed measured 1.168mm , which is within the specification limits of 1.14mm-1.24mm per the distal extension line extrusion product drawing.The discrepancies with the outer and inner diameters measuring below the specification limits confirm that the extrusion was narrowed due to stretching.A manual tug test confirmed that the distal line was secure within the brown luer hub.A device history record review was performed, and no relevant findings were identified.The ifu provided with the kit informs the user, "do not apply excessive force in placing or removing catheter or guidewire.Excessive force can cause component damage or breakage.If damage is suspected or withdrawal cannot be easily accomplished, radiographic visualization should be obtained and further consultation requested".The report of an extension line/juncture hub separation was confirmed through investigation of the returned sample.Visual analysis revealed that the distal line was separated from the juncture hub; however, a portion of the extrusion was still molded within the juncture hub.Visual analysis also revealed that a section of the separated line was narrowed and appeared stretched.Dimensional analysis confirmed that this narrowed section measured below the specification limits which indicates that the extension line was stretched prior to fracturing.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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