Resin printing is already a thing. The article mentions working withe a multitude of materials. I could see injecting a bio-safe substance into the wound area.
Combining sonic printing with 3D scanning could create a tool to allow field medics to repair subdermal injuries on scene. How many lives would be saved from stopping internal bleeding?
symmetry_seeking OP t1_j54bx2p wrote
Reply to comment by enemylemon in Researchers successfully print an onject under skin using sound waves - a first step toward reducing the need for open surgery. by symmetry_seeking
You are very observant! Much smart.