(b)(4).The customer returned one unraveled guide wire for analysis.No definite signs of use were observed.Visual analysis revealed that the guide wire was separated and unraveled from the proximal end.The proximal end and weld of the guide wire was not returned for analysis.Multiple kinks were also observed along the guide wire body.Microscopic examination.Confirmed the damage.It was also noted that the distal weld was spherical and intact; however, the distal j-bend was observed to be misshapen.The major kinks in the guide wire measured 41mm, 470mm, and 561mm from the distal weld.The overall length of the guide wire core wire measured 575mm, which is not within the specification of 596mm-604mm per guide wire product drawing.This indicates that at least 21mm was not returned for analysis.The outer diameter of the guide wire measured 0.795mm which is within the od specification of 0.0788mm-0.826mm per guide wire product drawing.Functional testing could not be performed due to the damage to the guide wire.A manual tug test confirmed that the distal weld was 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 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 a separated guide wire was confirmed through examination of the returned sample.Visual analysis revealed that the core wire was broken and the proximal end and weld of the guide wire was not returned.The guide wire met all relevant requirements during investigation testing.No manufacturing defects were found during this investigation.Arrow guide wires of this size are designed and manufactured to withstand a tensile force of 2.75 pounds force.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 caused or contributed to this event.Teleflex will continue to monitor and trend for reports of this nature.
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