Device evaluation by manufacturer: visual inspection of the exterior of the needle showed no abnormalities.The needle was connected to the icefx console, and a two-minute confidence test was performed, and no abnormalities were noticed.A five-minute freeze cycle was performed, and it was found that the needle shaft became completely covered in frost.The needle was disassembled, and the vacuum sleeve was tested for vacuum integrity.The vacuum sleeve became covered in frost, meaning the vacuum sleeve was defective.The vacuum sleeve was inspected under a microscope, and it was found that the vacuum sleeve had abnormalities in the metal that likely led to the vacuum integrity failing.It was also noted that even though the needle shaft was straight, the vacuum sleeve was bent.
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