(b)(4), the customer provided four photos for evaluation.The photos show the kit material and lot number, as well as a kinked guide wire.The customer also returned a single guide wire and the product lidstock and tray for evaluation.The guide wire was returned within its advancer tubing, was unraveled, and showed evidence of use.Visual inspection of the guide wire revealed it was unraveled from the distal weld and was kinked in several locations along the body.The core wire distal j-bend was deformed and exposed out of the coil wire.Microscopic examination of the guide wire confirmed the core wire was broken adjacent to the distal weld.The exposed distal core wire tip is tapered and discolored at the point of separation.Both welds were present and appeared full and spherical.The major kinks in the guide wire body were measured at 75 and 264mm from the distal tip.The broken core wire measured 599 mm which is within the specifications of 596-604 mm per product drawing; this indicates that no pieces of the core wire appear to be missing.The outer diameter of the guide wire in an undamaged location measured 0.81 mm which is within the specification of 0.788-0.826 mm per product drawing.Functional inspection of the returned guide wire could not be performed due to the damage.A device history record review was performed, and no relevant findings were identified.The instructions for use (ifu) provided with the 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." the report that the guide wire unraveled was confirmed through examination of the returned sample.The core wire was broken adjacent to the distal weld.The guide wire and catheter met all dimensional requirements during investigation testing.No manufacturing defects were found during this investigation.Arrow guide wires of this size are designed and manufactured to withstand a tensile force of 2.75 pounds force.This internal specification is higher than the bs en iso 11070:2014 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 caused or contributed to this event.Teleflex will continue to monitor and trend for reports of this nature.
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