1. The system is composed of the needle part and drainagebottle part;
2. The special puncture needle followed by a drainage tubecan go through skin and tissue to reach the areas of hematoma orichors, avoiding big incision made by bistouries.
3. With small holes in the drainage tube, the secretion canbe easily drained off by a suction machine;
4. The drainage tube with metal line inside can be detectedby x ray.
5. Safely, smoothly and completely drainage.