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Three-edged needle
三稜针 〔三稜針〕sān léng zhēn
A thick needle with a sharp, three-edged tip used for letting blood. A three-edged needle is the modern equivalent of the sharp-edged needle among the nine needles in ancient times. The use of pre-sterilized, disposable lancets has replaced the three-edged needle for bloodletting in many acupuncture clinics. See bloodletting for instructions on how to use it.
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