“益鸟402”型超声雾化器（上海合力医疗器械厂生产），以结构紧凑合理，性能稳定可靠，操作简便，为众多医疗单位选用。但其美中不足是所配晶片寿命短（3个月左右），易老化，出雾量变小，不能满足临床治疗需要，必须更换晶片才能保证治疗实效。由于使用中不注意及时擦干外溢 “Yi Bird 402” Ultrasonic Nebulizer (manufactured by Shanghai Heli Medical Instrument Factory) is compact and reasonable in structure, stable and reliable in performance, and easy to operate. It is used by many medical units. But its fly in the ointment is that the life of the allocated wafer is short (about 3 months), easy to age, and the amount of fog is getting smaller, which can not meet the needs of clinical treatment. The wafer must be replaced to ensure the effectiveness of the treatment. Due to inadvertent use of dry spillage