According to Chinese medicine, blood vessels are blocked by blood stasis, so the Chinese medicine for opening blood vessels is the Chinese medicine with the function of promoting blood circulation and breaking blood. Commonly used Chinese herbal medicines for promoting blood circulation and removing blood stasis include Rhizoma Corydalis, Curcuma Rhizome, Radix Curcumae, Olibanum, Carthami Flos, Semen Persicae, Herba Leonuri, Radix Cyathulae, Caulis Spatholobi, Radix Salviae Miltiorrhizae, Radix Paeoniae Rubra, Rhizoma Chuanxiong, Cortex Moutan, panax pseudo-ginseng, Fructus Crataegi and so on. Traditional Chinese medicines for breaking blood and dispersing stagnation have a strong effect, such as Sparganum, Goose Bamboo, Leech, Blindworm, Scolopendra and so on. Qi deficiency leads to blood stasis, so congestion is closely related to qi deficiency. We generally invigorate qi while promoting blood circulation, for example, adding astragalus, ginseng and so on. Commonly used Chinese patent medicines with the functions of promoting blood circulation and removing blood stasis include compound Danshen tablets, safflower tablets, Xuesaitong capsules, Xuefu Zhuyu capsules, Sanqi tablets, etc., all of which should be applied under the guidance of doctors. These drugs have obvious effects of promoting blood circulation to remove blood stasis, softening blood vessels, improving microcirculation and ensuring blood supply to cardiovascular and cerebrovascular diseases. Clinically, it is mainly used to treat coronary heart disease and cerebral blood supply deficiency caused by blood stasis, and generally it can achieve better results.

1. Blood vessel refers to a series of pipes through which blood flows. In addition to the cornea, hair, nails, dentin and epithelium, blood vessels are all over the body. According to the different structural functions of blood vessels, they are divided into three types: arteries, veins and capillaries. The artery starts from the heart, branches continuously, and its diameter becomes smaller and its wall becomes thinner. Finally, it is divided into a large number of capillaries, which are distributed among tissues and cells of the whole body. Capillaries rejoin, form veins step by step, and finally return to the heart. Blood vessels, arteries and veins are pipelines for conveying blood, capillaries are places for material exchange between blood and tissues, arteries and veins are connected through the heart, and the whole body blood vessels form closed pipelines. The distribution of blood vessels in the human body is often symmetrical and adapted to the function. Large blood vessels tend to be parallel to the long axis of the body and are wrapped into vascular nerve bundles with nerves by connective tissue membranes.

second, blood vessels are the conduits through which organisms transport blood, which can be divided into arteries, Vein and Capillary according to the transport direction. Arteries bring blood from the heart to the body tissues, veins bring blood back to the heart from the tissues, and capillaries connect arteries and veins, which are the main places for material exchange between blood and tissues. All living things have different types of blood vessels. Open circulation organisms, such as insects, have only arteries. Blood automatically flows out of the pulse and directly contacts the body tissue, and then the blood is recovered from the opening in the heart. Organisms with Closed circulation, such as mammals, birds, reptiles and fish, are connected by arteries to capillaries and then to veins, and finally return to the heart.

3. The vascular system consists of the arterial system originating from the ventricle, the venous system flowing back to the atrium and the reticular capillaries connected between the arteries and veins. Blood shoots from the ventricle, flows into the atrium through arteries, capillaries and veins, and circulates endlessly. According to the different circulation routes, it can be divided into two types: large (systemic) circulation and small (pulmonary) circulation. The great vascular circulation starts from the left ventricle, and the contraction of the left ventricle pumps arterial blood rich in oxygen and nutrients into the aorta, reaches the capillaries of various tissues of the whole body through arterial branches at all levels, and exchanges substances with tissue cells, that is, oxygen and nutrients in blood are absorbed by tissue cells, and metabolites and carbon dioxide of tissue cells enter the blood to form venous blood. Then it passes through various veins and finally merges into superior and inferior vena cava and injects into the right atrium.