The design points of the puncture include the following points:  

(1) Surface roughness, hardness, and corrosion resistance: The puncture rods and puncture rods made of stainless steel materials are applicable to cutting skin puncture knives at the head end of the head end.
(2) Flexibility, to verify the flexibility of some components of the puncture device, such as the opening and closing of the gas injection valve of the puncture device should be flexible; the removable sheath hat should ensure that it is convenient to use the fashion and unloading; In a puncture, the puncture knife should help the doctor's operation, but also ensure the safety of the correct use, which can be flexibly shrinking.
(3) Connecting firmness, there should be a certain connection solidity between the components of each combination to ensure the stability of the puncture in the process of use. Each connector should not be removed and separated.
(4) Gas blocking performance and sealing performance: The puncture should have good gas resistance and sealing to ensure that the product can maintain a stable qi belly in clinical use.
(5) Stranging and insertion performance, the puncture should have a certain size of puncture to ensure that it can pierce the abdominal wall tissue smoothly; With strong research, the size of the insertion power determines the applicability of the product to a certain extent.