Jakarta, INTI – A groundbreaking innovation from researchers at the California Institute of Technology is opening new possibilities in the medical field. They have successfully developed a method to 3D print tissue directly inside the body without requiring surgical procedures. This technology, known as Deep In Vivo Sound Printing (DISP), uses ultrasound waves to form tissue, biosensors, and even drug depots precisely within the targeted organ.
Overcoming the Limitations of Conventional Methods
Traditionally, tissue reconstruction for permanent damage such as worn knee cartilage or weakened hip joints has relied on conventional implants or 3D bioprinted tissue made outside the body. However, such methods still require additional surgery, which carries the risk of scarring, infection, or inflammation. DISP revolutionizes this approach by using injectable bioink that remains liquid at body temperature but solidifies when exposed to ultrasound, minimizing risks and accelerating recovery.
Promising Trials in Animals
In early trials, the research team successfully printed 3D tissue inside the abdomen of rabbits and the bladders of mice. They also incorporated conductive nanoparticles to create soft biosensors and drug depots containing anti-cancer or antibacterial agents that could release their contents upon ultrasound stimulation. According to Yu Shrike Zhang from Harvard Medical School, although not involved in the study, the findings show remarkable potential for real-world medical applications.
From Light to Sound
Previously, bioprinting technology relied on light to harden tissue layer by layer. While effective, this method was limited by the depth light could penetrate, making it unsuitable for thicker tissues. Ultrasound offers a clear advantage: the ability to reach depths of up to 20 cm without damaging organs. With the newly developed generation of sono-ink, the printing process becomes more precise, faster, and less prone to excessive heat that could damage structures.
Delivering Greater Control
The new DISP bioink contains a combination of molecules and lipid bubbles loaded with chemical triggers that are released when exposed to sound waves. Additional components help visualize the ink’s location and ensure that the intended structure forms as planned. This approach prevents premature reactions at body temperature, enabling doctors to 3D print tissue with full control, even in hard-to-reach areas.
Conclusion
DISP technology marks a major leap forward in modern medicine, enabling 3D tissue printing directly inside the body without surgery. This innovation has the potential to revolutionize patient care by reducing risks, speeding recovery, and paving the way for next-generation precision therapies.
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