Product evaluation: failure analysis for fiber 0010-2090-513h-(b)(4): the fiber cap exhibits signs of melting which formed a hole from the surface to the bevel edge; there are cracks at the fiber/glass cap fusion zone; the glass cap exhibits devitrification at the output area, and detritus adhesion around output area; the heat shrink tubing exhibits minor scratch marks; expiration date is 03/2017.Based on the device analysis, the potential for forward firing may exist.Probable root cause: based on the device analysis, the probable root cause of the failure is: operational context.Additional information: the probable root cause was determined based on heat accumulation.Cap wear was accelerated due to anatomical/procedural factors (tissue contact and technique) encountered during the procedure which would limit the performance of the fiber.
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