针对目前医院使用的以电磁泵为动力源的负压引流装置，大都存在着噪音大，负压稳定性差等缺点。我们根据大多数医院都装有中心吸引装置这一特点，试制了这种利用中心负压吸引作动力源的低负压引流装置。经多例临床病人使用证明，该装置工作时噪音小，负压稳定，故障少。工作原 For the negative pressure drainage devices using electromagnetic pumps as the power source currently used in hospitals, most of them have the disadvantages of large noise and poor negative pressure stability. According to the feature that most hospitals are equipped with a central attraction device, this kind of low-vacuum drainage device that utilizes central negative pressure as a power source is prototyped. The use of multiple clinical patients proved that the device works with low noise, stable negative pressure, and less failure. Work original