1965～ 1 999年 ,我科共收治呼吸道异物 31 82例 ,其中金属异物 72例 (2 .2 % )。异物为球形或近圆锥状 ,用异物钳夹取十分困难。我们针对异物的形态特点 ,采用多种方法将其全部取出 ,效果良好。报告如下。1　资料与方法1 .1 　 临床资料72例中 ,男 53例 ,女 1 9例 ;年龄 4～ 3 From 1965 to 1999, 3182 cases of foreign body in the respiratory tract were treated in our department, of which 72 cases were metal foreign bodies (2.2%). Foreign body is spherical or nearly conical, with foreign body clamp is very difficult to take. We focus on the morphological characteristics of foreign bodies, using a variety of methods to remove them all, the effect is good. The report is as follows. 1 Materials and Methods 1.1 clinical data 72 cases, 53 males and 19 females; aged 4 to 3