The stereo microscope investigation revealed tensile cracks.Further observation determined there were no indications of material or manufacturing defects.The review of the product device history records was not possible due to no lot number being identified.The investigation results conclude that the root cause for breakages were due to structural failure of the device due to mechanical overload.If further information is obtained that might add value to the contents of the investigation report, an additional follow-up report will be submitted.
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