(b)(4).The customer returned one segment of guide wire for evaluation.The returned segment appears to be the distal end as a j-tip is present.The returned piece of guide wire contained multiple kinks with offset coils.The wire contained signs of use in the form of biological material on the exterior of the wire.The wire appears to be cut as the core wire has a straight edge at the point of separation.The returned portion of guide wire measured 77 mm in length, indicating 519-527 mm are missing per length specifications.The outer diameter of the returned portion of guide wire was found to be within specification.A manual tug test confirmed the distal weld is still intact.A device history record (dhr) review was performed with no relevant findings.The instructions for use (ifu) provided with this kit warns the user, "do not apply excessive force in removing guide wire or catheters.If withdrawal cannot be easily accomplished, a chest x-ray should be obtained and further consultation requested." the customer returned one portion of guide wire for evaluation.The guide wire contained signs of use and multiple kinks.A manual tug test confirmed the distal weld was still fully intact.A dhr review was performed with no relevant findings to suggest a manufacturing related issue.The probable cause could not be determined as the entire guide wire was not returned.
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