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BL-49 Yishe (意舍) — Yi She
Depth
00.3–0.5 cun3.0
Oblique insertion
Precautions
Deep insertion may puncture the kidney. High risk of pneumothorax (lower pleural cavity).
Location (classical)
On the back, 3 cun lateral to the inferior border of the spinous process of the eleventh thoracic vertebra (T11), at the level of BL-20 (Spleen Shu point).
How to find it (practical)
In ventral decubitus, locate the point below the spinous process of the eleventh thoracic vertebra, 3 cun lateral to Ji Zhong (GV-6).
Anatomy
Latissimus dorsi and iliocostalis thoracis muscles.
Needling
Oblique insertion toward the spine, 0.3–0.5 cun.
Etymology
Yi (意), idea or thought; She (舍), residence. The Pi (Spleen) stores thought. The point lies at the level of Pi Shu (BL-20), as a residence for the Qi of the Pi (Spleen).
CLASSICAL SOURCEJia Yi Jing
Clinical Relations
Adjacent Points on the Meridian