Often, fine-needle aspiration is done using ultrasound to guide accurate placement of the needle.
通常，细针穿刺是在超声引导下进行的，这样针刺位置准确。
The known needle is arranged in a guide channel and kept or inducted between two guide side parts, while the needle of the invention extends along the strip (20), for guiding on the strip.
已知的针安放在导向通道内且因此在两个导向侧部之间保持 或引导，而根据本发明的针围绕条（20）延伸且在所述的条上导向。
It can make accurate nerve localization, guide the block needle to the target nerves, observe local anesthetic spread.
此法可以做到精确的神经定位，引导穿刺针到达目标神经，观察局麻药的扩散情况。
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