Corrugate
1、 Pharmacopoeia standard of corrugation       This product is the shell of Arca subcrenata Lischke, Arca gnanosa Linnaeus or Arca inflata Reeve, which belong to the family arcillariae. .
      [character] Scapharca subcrenata   It is slightly triangular or fan-shaped, 4-5cm long and 3-4cm high. The outside of the shell is raised, with brown hairs or has fallen off; The shell top protrudes and curls inward; There are 30-34 radiating ribs extending from the top of the shell to the ventral surface. The inner surface of the shell is smooth and white, the shell edge has a depression corresponding to the straight outside of the shell, and the hinge part has 1 row of small teeth. Strong quality. The air is weak and the taste is light.
      Mud clam   It is 2.5 ～ 4cm long and 2 ～ 3cm high. There are no brown hairs on the outside of the shell. There are 18 ～ 21 radiating ribs with granular protrusions on the ribs.
      Scapharca subcrenata   It is 7 ~ 9cm long and 6 ~ 8cm high. There are 42 ~ 48 radiating ribs outside the shell.
      Decoction pieces
      [processing] corrugated   .
      Calcined corrugated   .
      [nature, taste and tropism] salty, flat. It belongs to the lung, stomach and liver channels.
      [functions and indications] it can dissipate phlegm and blood stasis, soften the hardness and disperse the knot, make acid and relieve pain. It is used for stubborn phlegm cementation, sticky and difficult to crack, gall, scrofula, symptomatic lump, stomach pain and pantothenic acid.
      [usage and dosage] 9 ～ 15g, decoct first.
      [storage] put it in a dry place.


2、
1. the clam shell contains a large amount of calcium carbonate, and a small amount of calcium phosphate is more than 93% (calculated according to carbonic acid); It also contains a small amount of magnesium, iron, silicate, sulfate, chloride and organic matter.
2. the shell of Tegillarca granosa contains more than 90% calcium carbonate and a small amount of calcium phosphate, with a total calcium content of more than 93% (calculated according to calcium carbonate); Organic matter is about 1.69%; It also contains a small amount of magnesium, iron, silicate, sulfate, phosphate and chloride. .
3. the shell of Scapharca subcrenata contains a large amount of calcium carbonate and a small amount of calcium phosphate, with the maximum of 93% of the total calcium (calculated according to calcium carbonate); It also contains silicate and inorganic elements aluminum, chlorine, chromium, copper, iron, potassium, manganese, sodium, nickel, phosphorus, sulfur, silicon, strontium and zinc; And the shell of Scapharca subcrenata has a specific enrichment ability for nuclide manganese.

3、 Pharmacological effects of corrugated seeds
It can dissipate phlegm and blood stasis, soften hardness and disperse knots, and make acid and relieve pain. It is used for stubborn phlegm accumulation, sticky and difficult, gall, scrofula, symptomatic lump, stomach pain and pantothenic acid.