Although the power supply and the center is part of the hospital's oxygen supply logistics system, strictly speaking, it would lead to the medical dispute is relatively small, and not the patient disputes in the strict sense, is part of the hospital due to unfavorable security. But as hospital leaders must pay attention to this aspect of the problem with medical equipment, from the perspective of prevention of disputes, for logistical support system should also develop a comprehensive system and personal responsibility, if there are problems, it is possible to implement the responsibility to staff, otherwise It will cause trouble. Because the reasons for the dispute raised by patients is often multifaceted. Sometimes family members of patients do not know from what angle to present dispute, but the consequences are not satisfied with bedside medical equipment belt, then the resulting search for possible causes and consequences of, proposed a variety of reasons. Where power failure in the treatment process, but interrupted with terminal equipment, may be a reason for the dispute is not timely or faulty oxygen. So as a hospital have to pay attention to this matter is to prevent disputes from speaking device with a point of view, or from the actual needs of the medical work is concerned, it is very necessary. Central vacuum principle: Central vacuum pump driven by a motor through a water seal, a negative pressure, the gas tank to the negative terminal, provide the required negative pressure attract. Negative pressure generated reference electric suction vacuum required in the range of -0.04Mpa-- -0.08Mpa. Use a wall to attract up control meter connection and the size of the negative pressure patient contact, avoid inhalation of the dirt suction pipe. This central vacuum advantage of simple structure, easy preparation, small footprint, low noise and less pressure on the wall of negative pressure can be better controlled. Central vacuum achieve unified management and reduce costs. With oxygen equipment, Hebei Ericsson (certified), equipment with Ericsson by Hebei Medical Engineering Limited. Ericsson Hebei Medical Engineering Co., Ltd. (www.hslixin.com) Hebei Hengshui, a leader in medical device manufacturing equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Hebei Ericsson leadership with the staff warmly welcome all inquiries negotiations to create a better future Hebei Ericsson.