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心肺复苏（CPR）指南强调：在抢救心搏骤停患者实施CPR时，应尽早启动胸外心脏按压；同时强调用力按压，快速按压，使胸廓充分回弹，尽量减少按压中断时间。现有机械复苏装置存在按压位置容易偏移、价格昂贵、不易搬动及活塞易脱位等问题；而徒手CPR因高强度的体力损耗，会导致胸外按压深度和频率随着CPR时间延长而下降，从而造成CPR失败；此外，非专业医护人员进行CPR时，大多存在按压位置有偏差、按压深度不准确、胸壁回弹不理想等问题。基于以上因素，解放军总医院第八医学中心重症医学科的医护人员以国际CPR指南为标准，根据正负压CPR原理，设计了一种便携式胸外心脏按压仪，并获得了国家实用新型专利（专利号：ZL 2018 2 1173254.3）。该装置由定位吸盘、弹性体、固定壳体及按压组件等组成，能够达到快速准确地进行按压定位、按压深度可视、胸廓充分回弹的效果，具有便携、操作简单、适用人群广泛、适用场合多样的特点。“,”Cardiopulmonary resuscitation (CPR) guidelines emphasize that external chest compressions should be started as soon as possible when CPR is performed in patients with cardiac arrest. Moreover, those guidelines stress on fast and hard compressions to make the chest fully rebound and minimize non-pressing time. Current mechanical recovery device has several problems such as displacement of the pressing position, high price, difficult to move, and easy dislocation of piston. Because of the physical loss of high-intensity unarmed CPR, the depth and frequency of external chest compression will decrease with the extension of CPR time, leading to CPR failure. Besides, there are other problems caused by non-professional staff, such as the deviation of compression position, the inaccuracy of compression depth and the unsatisfactory rebound of the chest wall. Based on the above factors, the medical staff from the intensive care unit of the Eighth Medical Center of the Chinese People\'s Liberation Army General Hospital designed a portable external chest cardiac compressor based on international CPR guidelines which obtained the National Utility Model Patent of China (ZL 2018 2 1173254.3). The portable external chest cardiac compressor is composed of a positioning sucker, elastic body, mounting shell, and pressing components. Rapid and accurate compression positioning, visible compression depth and full chest rebound can be achieved. This device is mobile, easy to operate, and suitable for a broad crowd and various occasions.