Qn# (b)(4).The report that the guide wire unravelled and kinked was confirmed through examination of the returned sample.The customer returned one guide wire for analysis.No obvious signs-of-use were observed.Visual examination revealed the guide wire was unravelled at the distal end with multiple kinks along the body.The distal end of the core wire was protruding out of the coil wire.The distal j-bend was misshapen and still intact.Microscopic examination of the guide wire confirmed the core wire was broken at the distal weld.Both welds appeared full and spherical.The kinks on the guide wire measured 376mm, 405mm, and 669mm via calibrated ruler from the proximal end.The broken core wire measured 685mm in length via calibrated ruler, which was within the specification of 678-688mm per guide wire product drawing; therefore, no pieces of the core wire appeared to be missing.The outer diameter (od) of the guide wire measured 0.850mm via calibrated micrometer which was within the specification of 0.838-0.877mm per guide wire product drawing.Functional inspection could not be performed due to the condition of the returned sample.A manual tug test confirmed that the proximal weld was intact.The instructions for use (ifu) provided with this kit warns 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." a device history record review was performed, and no relevant findings were identified.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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