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The subsequent investigation of the returned device and extensive internal testing has ruled out this type of damage being able to occur during the manufacturing or shipping processes.This issue was most likely caused by inadvertent damage to the distal end of the shaft caused by the user either during clinical use or while removing coagulum/eschar from the electrode.The damage seen during clinical use may have been caused by one or a combination of the following factors: subjecting the device to unknown solvents, chemicals or disinfectants or any additional cleaning or reuses that may compromise essential material and design characteristics as well as the structural integrity of the device and lead to device failure, use of a scratch pad (commonly available in surgical environments) or other abrasive materials to clean the blade, use of a cannula or skin port that has tight interference with the outer diameter of the device shaft and/or modifying or altering the tip of the device.The ifu gives cleaning instructions to avoid any type of abrasive damage "for optimum performance, keep the distal end of the shaft free of debris.A damp gauze pad can be used for cleaning." as well as instructions to avoid recleaning, resterilization or reuse.
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