A treatment in which evacuated glass cups are applied to intact or scarified skin in order to draw blood toward or through the surface. It was used for disorders associated with an excess of blood, one of the four humors of medieval physiology.

• 杯吸法，拔罐法一种医疗方法，把抽空的玻璃杯放在完好无损或划破的皮肤上使血向体表聚集或放血出来。这种方法被用来治疗与血量过多有关的失调症，血是中世纪生理学中的四种体液之一