Qn#(b)(4).The customer returned one swg in the advancer tubing for evaluation.There was no evidence of use on any of the returned components.Visual examination of the returned swg confirmed the kink in the guide wire body.During normal assembly, the kink in the coil of the guide would have been located inside the protective tube assembly, protecting it from damage.No damage was noted on the tub assembly.The distal j-bend was intact.Both welds appeared spherical and fully formed.The kink in the returned swg was located at 331 mm from the proximal end.The overall length of the guide wire measured 453 mm which is within specifications of 444-456 mm per guide wire product drawing.The outer diameter of the guide wire measured 0.444 mm, which is within the specification limits of 0.43-0.47 mm per the guide wire product drawing.The undamaged portions of the returned wire guide passed through a 21 ga introducer needle with minimal resistance.A manual tug test confirmed the distal and proximal welds were fully attached.The customer did not provide a lot number; therefore, a device history record review was performed based upon a lot number from the sales history data of the customer.No relevant findings were identified.The instructions for use (ifu) provided with this product 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 report that the spring wire guide was found to be kinked prior to use was confirmed through visual examination of the returned sample.The returned guide wire had one kink in its body.The swg passed all relevant dimensional and functional inspection.A device history record review was performed based on sales history with no relevant findings to suggest a manufacturing related cause.During normal packaging, the portion of the guide wire that kinked would have been located inside the protective tube assembly, protecting it from damage.Therefore, it cannot be confirmed when the guide wire was kinked.The root cause of this investigation is undetermined.Teleflex will continue to monitor and trend for complaints of this nature.
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