笔者用排气针头（长８ｃｍ，内径０．１ｃｍ）自制成吸引器成功吸出鼓室内铅笔芯１例，报告如下。患者，女，１５岁。患者将铅笔塞到外耳道内玩耍时，肘部被同学用力撞击，当即感耳疼，耳道流血，听力下降。发现铅笔芯已折断，在当地未做任何处理。于１９９７年３月２６日下午? The author with the exhaust needle (length 8cm, diameter 0.1cm) self-made aspirator successfully sucked out of the drum chamber pencil case in 1 case, the report is as follows. Patient, female, 15 years old. Patient pencil into the external auditory canal play, the elbow was hard hit by classmates, immediately felt aural pain, ear canal bleeding, hearing loss. Found that the pencil lead has been broken, there is no local treatment. On the afternoon of March 26, 1997?