Qn#: (b)(4).The customer returned a severely unraveled and tangled guide wire for analysis.After untangling the guide wire, it was discovered that a portion of the coil wire near the distal end had separated from the rest of the assembly.Despite this separation, the distal weld was secure to the separated portion of the coil wire.The proximal weld appeared secure and intact.Microscopic examination confirmed that the core wire was broken directly adjacent to the distal weld.No other defects or anomalies were observed.The total guide wire length from the proximal weld to the point of separation on the core wire measured 682mm, which is within the specification limits of 678mm-688mm per the guide wire graphic.The guide wire outer diameter measured.848mm, which is within the specification limits of.838mm-.877mm per the guide wire graphic.Functional testing could not be performed due to the damage to the guide wire.A manual tug test confirmed that the proximal weld was secure and intact.A device history record review was performed, and no relevant findings were identified.The ifu provided with the kit informs the user, "do not withdraw spring-wire guide against needle bevel to minimize the risk of possible severing or damaging of spring-wire guide".The ifu also states, "although the incidence of spring wire guide failure is extremely low, practitioner should be aware of the potential for breakage if undue force is applied to the wire." the report that the guide wire separated was confirmed through complaint examination of the returned sample.Visual analysis revealed that the coil wire had separated towards the distal end.Additionally, the core wire was broken adjacent to the distal weld.The guide wire met all relevant dimensional requirements, and a device history record review did not reveal any relevant findings.Arrow guide wires of this size are designed and manufactured to withstand a tensile force of 2.75 pounds force.The internal specification is higher than the bs en iso 11070:2014 standard of 2.2 pounds force for this size wire.The selected insertion site and patient anatomy may present a tortuous path that could contribute to the possibility of guide wire kinking.Guide wire breakage may occur if a force greater than the design specification is applied during removal.Based on these circumstances, 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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