Ancient medical books in China recorded that leeches could be used to treat diseases. For example, in the classic, leeches "drive away evil blood, stagnate blood, close the moon, break blood and eliminate food stagnation"; Li Shizhen's Compendium of Materia Medica in Ming Dynasty collected the previous experience of treating diseases with leeches. Commonly used in medicine to suck pus and blood.
Abroad, the Egyptian pioneered the bloodletting therapy of medical leech 0/500 years ago.
In traditional Chinese medicine, leech is a kind of Chinese herbal medicine with the characteristics of breaking the road, breaking blood stasis, dispersing stagnation and reducing swelling. It is flat in nature, salty, bitter and slightly toxic.
Chinese medicine in China uses leeches to treat apoplexy, rheumatic joint pain, stranguria, hepatosplenomegaly, amenorrhea, paraplegia and angina pectoris.
Because the salivary glands of medical leeches secrete anticoagulant hirudin and histamine substances that dilate blood vessels when sucking blood; Another fibrinolytic enzyme can dissolve thrombus, and another fibrinolytic enzyme can decompose atherosclerotic plaque.
From 65438 to 0987, medical leeches were used for the first time in China to treat several cases of blood stasis after replantation of severed fingers.
The saliva of medical leech contains a variety of active substances, which has been widely valued by scientists all over the world.
Doctors in Britain, the United States, France and other countries have to reset and connect the small bones on their fingers, toes and nose during microsurgery. When assembling broken bones, soft and slender venules are easily blocked by surrounding tissues.
If you put 1 leech in this part, it will suck the oozing blood away and release substances that prevent blood coagulation.
After a few days, the patient's bone reattachment will return to normal blood circulation.
In recent years, plastic surgeons have used leeches to eliminate blood stasis in the vascular occlusion area after operation and reduce necrosis, thus improving the success rate of replantation or transplantation of tissues and organs.
The medicine developed by leech has a good effect on cardiovascular diseases, cerebral thrombosis, angina pectoris, tumor, cervical lymphoid nucleus and other diseases.
However, due to the extensive use of chemical fertilizers and pesticides in recent years and the harm of industrial sewage and wastewater to leeches, their wild resources have dropped sharply, which can not meet the needs of development and utilization. Therefore, the artificial cultivation of leeches has broad prospects.