(b)(4).The additional information received on 31jul2023 reported that the physician found out the leak while aspirating for blood during the procedure.Also, the customer pulled the plunger and found out that ars could not aspirate blood.An ultrasound was used to place the device and the venous access was confirmed.The insertion site used was neck and no medical intervention was required due to the event.The issue of ars leaking could not be confirmed during functional testing of the returned sample.The customer returned one arrow ra ulerson syringe (ars) and one 18 ga introducer needle for evaluation.Signs-of-use in the form of biological material were observed on the returned components.Visual examination of the ars and introducer needle did not reveal any anomalies or defects.The returned sample was functionally tested using the returned introducer needle in accordance with the instructions-for-use provided with this kit which states, "insert introducer needle or catheter/needle with attached syringe or arrow raulerson syringe (where provided) into vein and aspirate." the ars was able to draw and aspirate water with and without the introducer needle, without any leaks or excessive air build-up.The module requirement document for raulerson syringes was reviewed to determine requirements for air/water leakage.The document noted a deviation from iso: "the freedom of air and liquid leakage past the piston requirement is design restrictive and is intended for an injection-intended syringe, not the ars.The opening in the center of the piston that allows passage of the inner cannula prohibits the ars from meeting the pressure and vacuum requirements as dictated by the standard.However, because the intended use of the ars is to allow aspiration of blood to ensure venous placement of the introducer needle and to aid in the insertion of the spring wire guide, the leakage requirements of a standard syringe are not applicable to the ars." a vacuum test was performed on the ars syringe to verify that the internal valves within the plunger body were intact.With the plunger body at the bottom of the syringe, the tip of the ars was occluded, and the plunger was pulled back until it stopped.With the tip of the ars still occluded, the plunger was released and did snap back into a position = 1cc from the starting position.Therefore, the internal valves of the ars were functioning as intended.A device history record review was performed, and no relevant findings were identified.No problem was found with the returned device.Teleflex will continue to monitor and trend for reports of this nature.
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