In a breakthrough that could revolutionize regenerative medicine, Caltech researchers have developed a method to 3D print tissue directly inside the body without the need for surgery. The technology, called Deep Tissue In Vivo Sound Printing (DISP), uses ultrasound to solidify specially designed injectable bioink at precise locations inside the body.
Unlike traditional methods requiring external printing and surgical implantation, this ultrasound-based approach enables non-invasive, precise delivery of tissues, implants, and even slow-releasing drug depots—deep inside organs. In tests, tissues were printed inside rabbit stomachs and mouse bladders, and drug depots helped deliver anti-cancer treatments more effectively.
Key advantages include:
- No surgical incision needed
- Real-time monitoring via ultrasound-sensitive molecules
- Customizable ink, allowing for sensors and therapeutic payloads
- Long shelf life and safe breakdown of unused materials
Experts say this expands the scope of ultrasound-based printing, showing potential for treating cancer, organ repair, and creating internal biosensors. While the technology isn’t yet ready for hospitals, its promise suggests a near future where healing happens from the inside out without a single cut.