Teaching models are some medical medical simulation equipment used or contacted in medicine, including the entire simulated human body and a simulated human body part or certain simulated human body parts, as well as some medical instruments that must be involved in medical treatment. Most of them are made of PVC material. The teaching models are lifelike and show the functions and characteristics of certain parts of the human body. As a basic subject of medicine, human anatomy plays an indispensable role in lea