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Qn#(b)(4) section b.1.-corrected to 'adverse event' the customer provided one photo for analysis.Visual analysis shows a 10cc syringe attached to what appears to be a valve activated hub.Visual analysis shows a build-up of congealed biological material inside the valve activated hub.The customer also returned one mac catheter.Two valve activated hubs were attached to both the distal and proximal extension lines.Signs of use were observed inside the mac catheter.In a separate cup, the customer included the clot that was reported as being extracted from the mac.Further visual and microscopic examination of the clot confirmed that it was congealed blood.No other foreign bodies were visible.Further visual analysis revealed a kink on the mac body; however, additional information provided by the customer confirmed that no additional damage was observed on the mac body.Therefore, it is assumed that the kinking occurred after the reported event.Further analysis of the kit and the lidstock artwork revealed that neither a 10cc syringe nor the valve activated hubs are packaged within the reported finished good.Therefore, it is unknown if these are arrow products.The returned clot measured approximately 3/4" in length and approximately 1/8" in diameter.The mac length measured 100mm, which is within the specification limits of 98mm-102mm per the mac product drawing.The mac outer diameter measured 4.64mm, which is within the specification limits of 4.59 mm-4.71 mm per the mac extrusion product drawing.A lab inventory syringe filled with water was attached to the distal proximal extension lines and flushed.No blockages or leaks were observed.Performed per ifu statement, "flush and connect distal side port to appropriate line as necessary.Confirm and monitor proximal port by aspirating until free flow of venous blood is observed.Connect all extension lines to appropriate luer-lock line(s) as required".R & d was contacted as part of this complaint.They confirmed that patient conditions, catheter maintenance , medication, and indwell time can all contribute to clots forming in the mac.Clinical and medical affairs (cma) were also contacted and confirmed that "mac is a short fat catheter and is not indicated for cvp monitoring due to the high tip location.Cvp monitoring would only be indicated if a mac companion was inserted allowing the distal lumen to terminate closer to the ra".They also indicated that "the lumen would form a clot if not used or if there is not a tko fluid running".A device history record review was performed, and no relevant findings were identified.The mac product drawing, the mac extrusion product drawing, and the lidstock artwork were reviewed as part of this investigation.Neither a valve activated hub nor a 10cc syringe are normally included within the kit.The ifu provided with the kit informs the user, "flush and connect distal side port to appropriate line as necessary.Confirm and monitor proximal port by aspirating until free flow of venous blood is observed.Connect all extension lines to appropriate luer-lock line(s) as required.Unused port(s) may be 'locked' through injection cap(s) using standard hospital protocol.Clamps are provided on extension lines to occlude flow through each lumen during line and injection cap changes".The ifu also states , "clinicians must be aware of complications/undesirable side effects associated with this device including, but not limited to: cardiac tamponade secondary to vessel , atrial, or ventricular perforation; pleural (i.E.Pneumothorax) and mediastinal injuries; air embolism; catheter embolism; catheter occlusion; sheath embolism; sheath occlusion; thoracic duct laceration; bacteremia; septicemia; thrombosis; inadvertent arterial puncture; nerve damage/injury; hematoma; hemorrhage; fibrin sheath formation; exit site infection; vessel erosion; catheter tip malposition; dysrhythmias; extravasation; hemothorax".The report of a catheter obstructed by a clot was confirmed through analysis of the returned sample.Visual analysis of the customer photo and the returned sample confirmed a clot was extracted from the mac.Despite this, the mac met all relevant dimensional and functional requirements, and a device history record review did not reveal any relevant findings.Based on the customer report, the sample received, and the comments from r & d/cma, unintentional use error likely caused or contributed to the reported event as patient conditions, catheter maintenance, medication, and indwell time can contribute to clots forming.Teleflex will continue to monitor and trend for reports of this nature.
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