SY9G010 Flute Needle General 20G It is a commonly used instrument in ophthalmic surgery, with a sharp tip and a slender shank, which facilitates the doctor to perform delicate operations. It consists of a tip and a shank, and can be classified into cutting flute needles, piercing flute needles and grasping flute needles according to different functions and uses. These features and types make the flute needle one of the indispensable tools in ophthalmic surgery.