Micro-power negative pressure wound technique reduces risk of incision infection following loop ileostomy closure

Figure 1 Composition and working principle of micro-power negative pressure wound technique. A: The wound dressing is made of a special polyvinyl alcohol foam material. The material covers the wound and is sealed by a medical transparent film. In this way, it becomes a three-layer dressing containing a medical film layer, liquid locking layer, and micro-power vacuum and pumping effect layer; B: When exudates are absorbed into the liquid locking layer, the dressing expands, and the medical film layer is elevated. Then the closed space becomes larger and forms a local micro-power vacuum, which exerts negative pressure attraction on the wound and its deep soft tissue.