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Qn#(b)(4).The customer returned one cvc kit containing various components including an ars; no introducer needle was returned.Visual examination of the ars and other components did not reveal any anomalies or defects.The syringe was able to successfully draw and aspirate water with a lab inventory introducer needle attached (per (b)(4) rev 3 req 6.1).No issues were identified.The module requirement document for raulerson syringes ((b)(4) rev 3) was reviewed to determine requirements for air/water leakage.The document notes a deviation from iso (b)(4): "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 in order 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 snapped back into a position = 1cc from the starting position.Therefore, the internal valves of the ars are functioning as intended.The instructions for use (ifu) warns the user, "aspiration with spring-wire guide in place will cause introduction of air into arrow raulerson syringe." the issue of the ars leaking was not able to be confirmed by functional testing of the returned sample.The returned syringe was able to draw and aspirate water through a lab inventory introducer needle with no issues.The syringe was also able to pass the vacuum test, indicating the valves of the syringe are functioning as intended.Based on the sample received, no problem was found on the device.Teleflex will continue to monitor and trend reports of this nature.
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