(b)(4).The customer report of an unravelled guide wire was confirmed through complaint investigation of the returned sample.The customer returned multiple components of a cvc kit, including one guide wire assembly, arrow raulerson syringe (ars), and catheter for evaluation.Signs-of-use were observed on the returned components.Visual inspection of the guide wire revealed multiple kinks along the guide wire body.The guide wire coil wire was also observed to be unravelled from the core wire at the distal weld.Microscopic examination confirmed the damage and revealed that both welds were present and spherical.Visual inspection of the ars revealed no obvious defects or anomalies.The kinks in the guide wire measured 357mm and 391mm via calibrated ruler from the proximal end.The overall length of the guide wire core wire measured 600mm via calibrated ruler, which was within the specifications of 596-604mm per product drawing.The guide wire outer diameter (od) measured 0.803mm via calibrated caliper, which was within the specifications of 0.788-0.826mm per product drawing.Dimensional inspection of the ars was not required as part of this complaint investigation.Functional inspection of the returned components was performed per the product ifu which states, "advance guidewire into arrow raulerson syringe approximately 10 cm until it passes through syringe valves or into introducer needle." major resistance was experienced at the location of the kinking.The undamaged portions of the guide wire passed with little to no resistance.A manual tug test confirmed 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 not required as part of this complaint investigation.Arrow guide wires of this size were 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 likely caused or contributed to this event.Teleflex will continue to monitor and trend for complaints of this nature.
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