Features:

1,The simulated standardized patient is placed in the supine position, with soft texture, real touch and lifelike appearance.

2,Obvious landmarks on the body surface: the lower edge of the costal arch, xiphoid process, umbilicus, groin, anterior superior iliac spine, and iliac crest can all be clearly felt.

3,There is an obvious sense of failure after puncture, and simulated intraperitoneal fluid can be extracted.