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前言：在皮肤科，病理活检是诸多疑难病及少见病必要的诊断手段之一，但既往的病理活检手术费时费力，我们根据皮肤具有弹性的生理特点和诸多皮肤病外在和表浅的病理特征，研制了环钻套筒式旋转挤切器，目的在于方便手术快捷活检标本。材料：应用ZCr18Ni9Ti不锈钢管制作。性能?
Foreword: In dermatology, pathological biopsy is one of the necessary diagnostic tools for many difficult diseases and rare diseases. However, past pathological biopsy procedures are time-consuming and laborious. We have elastic and physiological characteristics of the skin and the external and superficial pathologies of many skin diseases. The characteristics of the development of a rotary drilling sleeve type rotary cutter, the purpose is to facilitate rapid biopsy specimens. Material: ZCr18Ni9Ti stainless steel tube. performance?