Olympus is initiating a recall to inform customers of an increase in complaints for the triangle tip of the KD-640L and KD-645L triangle tip electrosurgical knives breaking off during use. Olympus' investigation has identified that deterioration of the cutting knife can contribute to tip breakage during use. Deterioration, including overheating and burning, may occur due to use with non-Olympus electrosurgical units and/or use of output settings that exceed the specifications.