3D printing technology has been used in surgery and repairing damaged tissue inside the body, which is impossible.
Repairing tissue damage from the inside of the body would require a printer capable of printing at a microscopic level, with a resolution much finer than what is currently possible with 3D printing. Additionally, the printer must work within the human body’s complex environment, navigating around organs and tissues without causing further damage.
3D Printing technology progressed to develop a new type of bioprinting, which involves printing living cells and tissues but is still experimental. While 3D printing for various medical applications, including tissue repair, using it to repair tissue damage from the inside of the body. It is not currently achievable with current technology other than 3D printing. It has not yet been used for widespread clinical applications.