负压封闭引流技术(vacuum sealing drainage,VSD)是指用内含有引流管的聚乙烯酒精水化海藻盐泡沫敷料,来覆盖或填充皮肤、软组织缺损的创面,在用生物半透膜对之进行封闭,使其成为一个密闭空间,可以阻止外部细菌进入创面,保证创面与皮肤的正常透气,外加持续的负压吸引力,可使传统引流管的引流面积更大,创面无死腔,渗出“零积聚”[1]。 Vacuum sealing drainage (VSD) refers to the use of polyethylene alcohol hydrated seaweed salt foam dressings containing a drainage tube to cover or fill the skin, soft tissue defect wounds, which are treated with biological semipermeable membranes Closed to make it a confined space, to prevent external bacteria into the wound to ensure the normal ventilation of the wound and the skin, plus a sustained negative pressure attraction, the drainage area of ​​the traditional drainage tube can be larger, the wound surface without dead space, exudation “Zero accumulation ” [1].