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Credit
Chinese/Japanese Pulse Image chart: Yin Heel Vessel. Wellcome Collection. Attribution 4.0 International (CC BY 4.0). Source: Wellcome Collection.
Illustration of Yin Heel Vessel (pulse) from Renyuan maiying guizhi tushuo (Pictorial Handbook of Pulse Images Based on the Person). This is a specialist text on pulse diagnosis attributed to the third-century master Shuhe, edited and revised by Shen Jifen in the Ming period (1368-1644). It discusses various pulse images and the medical conditions to which they relate, and contains 48 pulse image diagrams. This undated edition was engraved and published in Japan.
The text states: Yin Heel Vessel (yinqiao mai) originates in the middle of the heel, runs upwards via the inner ankle as far as the throat, and meets Penetrating Vessel (chongmai) below the eye. Its pulse image is like a curled dulcimer string. Illnesses related to Yin Heel Vessel (yinqiao mai) are weakness in the limbs and flatulence(?).