... trocar and cannula 套针套管 trocar needle 套针 trocar rasp 穿刺锉 ...
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thick steel needle trocar 粗钢针套针
trocar r needle 套针
thick k steel needle trocar 粗钢针套针
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The invention comprises a handle and a drill bit, wherein the drilling bit has a trocar structure consisting of two parts, namely a sleeve and a tube core needle.
本发明包括手柄和钻头，钻头为套管针结构，包括套管和管芯针两部分组成。
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