The device history record (dhr) review confirmed that the device met all material, assembly and performance specifications.Visual inspection of the returned device found that the guidewire was received in two fragments.Magnified examination of the fracture site showed the core wire was fractured and the guidewire was kinked.Additionally, the polytetrafluoroethylene (ptfe) coating was scrapped closed to the fracture site.From the condition of the device, the functional test could not be performed.Analysis of the device revealed bending at the fracture site which is an indication of excessive manipulation during use.From the condition of the fracture, it appears that the guidewire kinked and then separated due to handling.Therefore, a probable cause of handling damage has been assigned to the reported and analyzed ¿guidewire broken and kinked'.It is possible the ptfe coating was damaged due to insecure tightening of the torque device.However, this could not be definitively assessed since the torque device was not returned for analysis.Therefore, a cause of undeterminable has been assigned to the reported and analyzed ¿guidewire ptfe coating peeling'.
|