Argon knife pens are usually designed as single-use tools. An argon knife pen is a minimally invasive surgical tool used to perform delicate surgical procedures in the medical field. It produces a controlled, non-contact cutting effect by injecting high-purity argon gas into the tiny tip of the knife. Because the argon gas comes into contact with tissue or body fluids during use, and because it cannot be effectively cleaned and sterilized, argon knife pens are often designed for single-use to ensure safe and hygienic surgical operations.