(b)(4).The customer returned one guide wire, catheter, and tray with lidstock for analysis.No other components were returned.Signs of use in the form of biological material was observed.Visual analysis revealed that the guide wire was unraveled from the proximal end and contained multiple kinks along the body.Microscopic examination confirmed the damage and revealed that the core wire had separated directly adjacent to the proximal weld.Both welds were full and spherical.The distal j-bend was misshapen but intact.The major kinks in the guide wire measured 335mm, 394mm, and 410mm from the distal end.The overall length of the guide wire core wire measured 596mm, which is within the specification of 596mm-604mm per guide wire product drawing; therefore, no piece of the core wire appears to be missing.The outer diameter of the guide wire measured 0.798mm which is within the outer diameter specification of 0.788-0.826mm per product drawing.The undamaged end (distal end) of returned guide wire was inserted through a lab inventory arrow raulerson syringe (ars) and introducer needle subassembly.Little to no resistance was observed in the undamaged portions of the guide wire as it passed through the subassembly.Performed per ifu statement, "advance guidewire into arrow raulerson syringe approximately 10 cm until it passes through syringe valves or into introducer needle".The undamaged end of the guide wire was also threaded through the returned catheter and the undamaged portions experienced little to no resistance.A manual tug test confirmed that the distal weld was intact.A device history record review was performed, and no relevant findings were identified to suggest a manufacturing issue.The ifu provided with the kit informs 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.Visual analysis revealed that the core wire was broken adjacent to the proximal weld.The guide wire met all functional/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 of 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 caused or contributed to this event.Teleflex will continue to monitor and trend for reports of this nature.
|