The suction was always against nasal septum,cartilage or bone,and the lateral pore was not closed,so decreased attractive force and avoided blood staining of eyeglass for endoscope.

• 吸引剥离器的吸引孔始终朝向鼻中隔软骨或骨，不封闭其外部侧孔，减少了吸力，并避免了血染内窥镜镜面。