Plaster is a transdermal preparation. As an external medicine, its function is mainly to penetrate into the skin through internal components. The action principle of plaster is mainly divided into two parts:
1, drug principle
Plaster uses the principle of meridian tropism of traditional Chinese medicine and the synergistic effect of drugs to take strong-flavored drugs, so that a group of drugs can penetrate into the skin, and have the effects of diminishing inflammation and relieving pain, promoting blood circulation and removing blood stasis, benefiting qi and dredging collaterals, strengthening tendons and bones, relaxing tendons and activating collaterals, inducing resuscitation and penetrating bones, expelling wind and dispelling cold, etc. In addition, the plaster applied to the muscle surface can also stimulate nerve endings, promote local blood circulation and improve the nutrition of surrounding tissues by reflection, dilating blood vessels, and achieve the purposes of detumescence, anti-inflammation and analgesia.
2, the principle of absorption
Plaster can be absorbed by human body because the skin surface is not a single piece, but there are many pores, which are connected with the systemic circulation of human body, so it is also a drug delivery channel. The effective substances in the plaster directly act on the acupoints on the body surface, and the medicinal properties will penetrate into the subcutaneous tissue through the pores of the skin, and directly reach the place where the viscera and qi are out of balance through the systemic circulation, so as to play the role of meridian tropism and function of the medicine.
From these principles, it can be seen that plastering is more effective in summer, because the temperature is higher in summer, the skin is slack, the pores are dilated, and drugs are more likely to penetrate into acupoints and meridians from the skin, and directly reach the affected area through meridians and qi and blood.
Second, how does the plaster work?
When plastering, related diseases can be treated through the direct action of drugs, hyperthermia, physical therapy and fixation after heating, and stimulation of meridian points and nerve endings. The plastering method can be summarized as follows:
1. Removal: Remove pathogenic factors in places where diseases accumulate, so as to prevent pathogenic factors from sinking deeply.
2. Interception: cut off the pathogenic factors, cut off the chain of pathogenic factors in the body, and prevent the pathogenic factors from spreading to other parts of the body in time.
3, pass: Chinese medicine believes that the general principle is painless, and the pain is unreasonable. The function of plaster is to promote blood circulation, remove blood stasis and relieve pain.
4. Adjustment: After the plaster penetrates into the skin, the medicinal components are used to adjust the qi, blood and viscera of Yin and Yang, so as to achieve the effect of balancing Yin and Yang and restore the health of patients.