The drill isapplied to the cochlea, the inner ear hearing organ, is aligned to thecorrect place and then drills a hole less than a millimetre in diameterto enable the cochlear implant to be inserted.

• 该钻头适用于内耳听觉器官??耳蜗，它准确对齐到正确的部位，接着在该部位钻一个直径小于一毫米的洞使得耳蜗植入电极可以由此插入。