Puncture Needle Angle: The angle of the puncture needle determines the puncture resistance. The smaller the puncture needle angle, the weaker the needle strength and the lower the resistance. Since the smaller the angle, the relatively weaker the strength of the needle, when designing the puncture needle, we strive to optimise the angle to ensure the strength of the puncture needle. In addition, the angles on both sides of the needle are also very important, and the size of the side angle is also one of the biggest factors affecting puncture resistance.

Puncture Needle Roughness: The roughness of the puncture surface determines the influence of the axial mechanics of the puncture. The roughness of the puncture is generally within Ra0.4, which means that the roughness determines the puncture force. In addition, to eliminate the influence of roughness, a silicone oil coating is added to the puncture surface when grinding the needle blade to reduce the puncture resistance through lubricity.

Material Strength of the Puncture: In addition to the angle and roughness of the puncture needle, the material strength of the puncture needle is also critical to the instability of the puncture force. The material strength of the puncture needle is a key factor in ensuring the continuous operation of the puncture needle and the stability of the puncture force. When designing puncture needles, we need to consider the use scenarios, whether it is long-distance puncture or short-distance puncture, hard tissue puncture or soft tissue puncture, and we also need to consider the force point of the puncture. Therefore, the choice of puncture body material determines the optimisation of the puncture product function.