Qn#(b)(4).The customer returned one guide wire, one cvc catheter, and the lidstock for analysis.Signs-of-use were observed inside the distal extension line.The sample was returned with the guide wire still inserted through the distal extension line of the catheter.Visual examination revealed the guide wire was separated and unraveled towards the proximal end.Several kinks were also observed across the guide wire.Microscopic examination confirmed the damage and revealed that the core wire and the coils had separated approximately 1cm from the proximal weld.The proximal weld was still attached to both the coils and core wires on the separation section.Several offset coils were observed adjacent to the separation, which likely contributed to the damage.The guide wire cumulative core length from the distal weld to the proximal weld (added two separated pieces) measured 601mm, which is within the specification limits of 596mm-604mm per the guide wire graphic.The guide wire outer diameter measured.79mm, which is within the specification limits of.788mm-.826mm per the guide wire graphic.The catheter body outer diameter measured 217mm, which is within the specification limits of 207mm-227mm per the catheter graphic.The catheter body outer diameter measured.0945", which is within the specification limits of.094"-.098" per the catheter extrusion graphic.A lab inventory guide wire with a diameter of.032" was inserted through the returned catheter.Little to no resistance was observed.Performed per the ifu statement, "thread tip of catheter over guidewire.Sufficient guidewire length must remain exposed at hub end of catheter to maintain a firm grip on guidewire".Despite the separation, the distal and proximal welds were secure to their respective core wires.A device history record review was performed, and no relevant findings were identified.The ifu provided with the kit informs the user, "do not use excessive force when introducing guidewire or tissue dilator as this can lead to vessel perforation, bleeding, or component damage".The ifu also states, "do not withdraw guidewire against needle bevel to reduce risk of possible severing or damaging of guidewire".The customer report of guide wire separation was confirmed by complaint investigation of the returned sample.The guide wire was separated and unraveled towards the proximal end.The sample passed dimensional inspection, and a device history record review was performed with no relevant findings.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 (undue force) likely contributed to this event.Teleflex will continue to monitor and trend for reports of this nature.
|