(b)(4).
Device evaluation: the report that the guide wire during use was confirmed.
One guide wire was returned for analysis.
The catheter involved in the incident was not returned.
Visual/tactile examination found numerous kinks/bends over the length of the guide wire body and that the core wire was broken.
Microscopic examination found that the core wire was broken adjacent to the proximal (straight) weld.
The proximal weld remains attached to the coil wire.
A manual tug test confirmed that the core wire remains intact with the distal weld and coil wire.
The guide wire drawing specifies a length of 600 +/- 4 mm and a diameter of.
788/.
826 mm.
The length of the guide wire / core wire was determined to be consistent with the drawing.
The outside diameter measured 0.
799, which met specifications.
The instruction booklet describes suggested techniques to minimize the likelihood of guide wire damage during use.
The instructions for use (ifu) state that if resistance is encountered when attempting to remove the guide wire after catheter placement, guidewire may be kinked around the tip of the catheter within vessel.
In this circumstance, pulling back on the guide wire may result in undue force being applied resulting in other remarks: guide wire breakage.
The ifu also state that if resistance is encountered, withdraw the catheter relative to the guide wire about 2-3 cm and attempt to remove guide wire.
If resistance is again encountered, remove guidewire and catheter simultaneously.
The selected insertion site and patient anatomy may present a tortuous path that could contribute to the possibility of guide wire kinking.
A device history record review was performed based on sales history and did not reveal any manufacturing related issues.
Based on these circumstances, operational context caused or contributed to the event.
No further action will be taken.
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