(b)(4).The report that the guide wire was unravelled was confirmed through examination of the returned sample.The customer returned one guide wire for evaluation and the 18ga introducer needle was not returned.Visual examination revealed the guide wire was unravelled from the distal weld.The distal end of the core wire was broken and protruding out of the coil wire.Dimensional inspection and a device history record review based on a potential lot from sales history did not reveal any evidence of a manufacturing related issue.Functional inspection of the guide wire could not be performed for this complaint investigation due to the damage to the returned guide wire.The instructions-for-use (ifu) provided with this product 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.Do not withdraw guidewire against needle bevel to reduce risk of possible severing or damaging of guidewire." arrow guide wires of this size are designed and manufactured to withstand a tensile force of 2.75 pounds force.This internal specif ication is higher than the bs en iso 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 contributed to this event, however, the probable cause of guide wire and needle resistance could not be determined based upon the information provided and without the needle being returned for evaluation.Teleflex will continue to monitor and trend for reports of this nature.
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