Summary
The ability to build or repair biological structures inside the human body without open surgery has long been a goal of medicine and manufacturing, with the potential to reduce infection risk, recovery time, pain, and healthcare costs. Existing bioprinting approaches rely on light or heat to solidify materials, which limits their use to shallow or externally accessible regions because these energy sources cannot penetrate deeply into biological tissues. Ultrasound, by contrast, can travel through the body safely and precisely, offering a fundamentally new pathway for non-invasive bioprinting.
