Crab shell

Crab shell

(Qianjin Shizhi)

[source] it is the crustacean of Eriocheir sinensis. See "crab" for animal morphology.

[chemical composition] about 3 / 4 is calcium carbonate, about half of the remaining 1 / 4 is chitin, and the remaining half is mainly protein. Chitin is a polysaccharide made from N-acetylglucosamine, which is insoluble in dilute acid and alkali. If it is boiled with acid, it will be hydrolyzed to produce acetic acid and D-glucosamine. Chitin is a special component of the shells of crabs and shrimps, but it is also found in the shells, hyphae and spores of some insects.

[Xing Wei] Qianjin Shizhi: "sour, cold, poisonous. "

Function and indications: breaking blood stasis and eliminating accumulation. Treatment of stasis, hypochondriac pain, abdominal pain, breast carbuncle, chilblain.

① "Compendium": "burning, honey, coated with chilblain and bee fly injury; wine, the treatment of women and children pillow pain and abdominal pain, blood collapse, Xiaoji. "

② "Materia medica Chongyuan": "attacking poison, dispersing wind, eliminating accumulation, promoting blood stasis. "

Objective: To study the dosage and usage of the powder. External use: burn ash to adjust and apply.

[prescription selection] ① for patients with blood accumulation, yellowing, chest and hypochondriac knot pain but no swelling: crab shell calcination, black sugar, no ash wine, three coins, but several effects. (Ben Jing Feng Yuan)

② Treatment of blood collapse and even abdominal pain: crab shell burning, rice drink. (key to syndrome differentiation and treatment)

③ Treatment of women's breast abscess: crab shell ash is scattered after taking it. (Ben Jing Feng Yuan)

④ Treatment of bee fly injury: crab shell burning, grinding, honey transfer application. (key to syndrome differentiation and treatment)