Medical vacuum technology is mainly used in medical equipment and medicine production. The effective use of these new medical devices will contribute to the success of surgery, effectively extending the use of drugs, vaccines and blood and increasing the use effect. Since the 1960s, vacuum technology has been used in high-speed centrifuges, electron microscopes and X-ray tubes.
Clinical vacuum aspiration: clinical aspiration is often seen in surgery. Small – sized racquet suction is mainly used for syringe suction. In general, postoperative congestion, pus, vomit, ascites, and phlegm are the main causes of aspiration. It is clear that these must be continuously aspirated while preventing the invasion of bacteria, that is, strict sterilization should be ensured.
Phlegm in the larynx of a patient is usually removed by a micro-mechanical pump after the operation in the department of cardiology and thoracic surgery. However, there must be a set of suction device for the removal of blood stasis, pus, vomit and ascites. Water jet, water vapor jet pump, water ring pump, slide valve mechanical pump, rotary plate mechanical pump and roots pump are commonly used.
The installation of the vacuum line is required when using the vacuum suction device, as the pump will soon affect the patient. The vacuum pump system used in large hospitals can be operated with a vacuum pump and many patients are treated with clinical aspiration simultaneously. However, each primer tube shall be equipped with pressure and flow control, complete plug and bacteria filter, and the vacuum can also be visually seen from the sound and visual degree. This device is suitable for large surgical wards, avoiding the noise caused by the separate use of vacuum pumps, and reasonably improving the utilization rate of vacuum pumps. However, in this vacuum suction system, the pipeline should be properly installed and avoid bacterial contamination of the vacuum pipeline.
For vacuum suction device, although to achieve the minimum required pressure instrument for 50 torr, considering the line go line, flow conductivity decreases, unfavorable factors such as system leakage, can make its average pumping speed as much as possible. The pressure regulating device can be used to select the proper vacuum condition and the amount of flow during suction. If the leakage is found, it can be stopped in time.
In the concrete operation, attention should be paid to the size of the pumping speed. Design of pumping speed of the system and the actual pumping speed is not the same, because the design is for air pumping speed, and the actual is the purulent blood, sputum suction such big viscosity liquid, by suction when flow control can be set to pump fluid flow, which can estimate the actual pumping speed of the system.
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