In China, using anesthesia drug in major surgery to reduce patients suffering has been a long history. With the actual needs of the continuous development of the biomedical engineering and clinical work, anesthesia machine as inhaled general anesthesia is widely used in anesthesia, has become an indispensable medical equipment for major surgery. Anesthesia machine has become the conventional medical equipment essential for our operating room, the patient's rescue, first aid and surgery essential equipment.
Anesthesia machine is operated by mechanical circuit anesthetic and fed into the alveoli of patients, the formation of the effect of the anesthetic gas partial pressure, diffusion into the blood, inhibition occur directly on the central nervous system, resulting in general anesthesia. The anesthesia machine is a semi-open anesthesia device. It is mainly composed of the chemical tanks, ether regulation switch, folding bellows suction expiratory unidirectional valve and bellows.
At present, the annual demand of domestic anesthesia machine for about 5,000 units, its middle and low anesthesia machine for 3000, provided mainly by domestic; around 2,000 units in the high-end anesthesia machine, about 80% of imported products, high-end anesthesia machine almost imported productsmonopoly, each the prices of upscale anesthesia machine in 60 million to 150 million, the annual national need to use $ 30 million of foreign exchange to import high-grade anesthesia machine. Its development trend, along with the progress of the development of medical science and modern diagnostic equipment, anesthesia has increasingly become an indispensable part of daily medical work of the modern hospital. To meet this requirement, Anesthesiology, whether in terms of fundamental research or in clinical practice, that the narcosis work directly service new anesthesia machine, monitor the research and development have made considerable progress.
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