自1976年以来,我们将废用的钨钢裂钻车针进行了尖三角形改制,经临床使用效果满意。现介绍如下。 制作方法:1.裂刃尖三角形钻针:将圆柱裂沟形各型号钨钢裂钻车针用砂轮或砂石针顺车针长轴将其刃部的六根棱柱间隔磨去三根,并使其自刃根至刃顶部逐渐减径呈三棱状即成。磨改后的钻针其刃根部三 Since 1976, we have transformed the waste tungsten steel split pin into a pointed triangle and are satisfied with clinical use. Now introduced as follows. Production methods: 1. Rake tip triangular drill needle: the cleft groove of each type of tungsten steel splitter drill pin wheel or sand needle along the long axis of its blade edge of the six prismatic interval mill to three, and From the edge of the blade to the top of the blade is gradually reduced diameter triangular shape Serve. After the modification of the drill tip of its root three