Qn#: (b)(4).The customer returned one guide wire and lid stock for evaluation.Visual examination confirmed the guide wire contained four curves.The coils appeared slightly closer; however, they were not offset or unraveled.The returned guide wire had slight bends 221, 260, 310, and 363 mm from the proximal end.The length and outer diameter of the returned wire were measured and were found to be within specification.The returned guide wire was able to pass through a lab inventory catheter with moderate resistance.A manual tug test confirmed that both the proximal and distal welds are fully intact.A device history record (dhr) review was performed with no relevant findings to suggest a manufacturing related issue.The instructions for use (ifu) provided with this kit warns the user, "do not cut spring-wire guide to alter length.Do not withdraw spring-wire guide against needle bevel to minimize the risk of possible severing or damaging of spring-wire guide." (con't) other remarks: the reported complaint of the guide wire kinking during use was confirmed by complaint investigation.The returned guide wire contained four slight bends.The coils appeared slightly closer; however, they were not offset or unraveled.A dhr review was performed with no relevant findings to suggest a manufacturing related issue.Based on the sample as received and the report that the incident happened during use, it was determined that operational context caused or contributed to this event.
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