Doctors in South Korea successfully transplanted a 3D-printed windpipe into a woman in her 50s, marking the world’s first successful procedure of its kind. The woman’s body later began to grow a real living trachea around the printed implant.
The patient had lost part of her windpipe during surgery for thyroid cancer. Breathing and speaking had become difficult, and normal surgery could not rebuild the damaged organ. To save her life, doctors decided to use a 3D-printed organ made to perfectly match her own body. The implant was designed using CT and MRI scans, ensuring it fit precisely into her airway.
The printed trachea measured about five centimeters long and was built using a biodegradable material called polycaprolactone (PCL) mixed with bio-ink containing stem cells and cartilage cells. This unique combination allowed the implant to become more than just an artificial tube. It slowly turned into a living, healing structure inside her body.
Doctors explained that six months after the operation, the implant was healing naturally. “We were surprised to see new blood vessels forming, showing that the patient’s body had accepted the structure as its own,” one of the surgeons said. The most remarkable part was that the woman did not need any immunosuppressant drugs, which are normally used to stop the body from rejecting transplanted organs.
Over the next few years, the polymer material would safely dissolve, while the woman’s own tissue would continue to grow, eventually replacing the printed trachea completely. According to the hospital, the full regeneration process could take about five years.
The success of this surgery was the result of collaboration between the Catholic University of Korea, Gachon University, and the biomedical engineering company T&R Biofab, which produced the high-precision 3D printer. The printer was designed specifically for medical use and could print hollow tubular structures such as windpipes and blood vessels.
The entire process took less than two weeks to complete. After the design was finalized, the printing was done in a controlled lab environment, and the transplant surgery itself lasted only half a day. This was a major improvement compared to the months of preparation and testing required for traditional organ transplants.
Dr. Paulo Marinho, the head of scientific strategy at T&R Biofab, said “While it is too early to say this is a complete solution to the global shortage of donor organs, it is a step toward bridging that gap,” he told BBC Science Focus.
He explained that this success showed how 3D bioprinting could be used to create customized organs that not only fit the patient but also become part of their own biology. “This is a clear example of how technology and medicine are coming together to create living solutions,” he added.
The printed trachea used stem cells taken from nasal tissues that had been discarded during minor surgeries to treat nasal congestion. These cells were chosen because they had the ability to transform into various types of tissue, including cartilage and mucosal lining. The result was an implant that behaved like a natural windpipe, flexible yet strong enough to support normal breathing.
Before this breakthrough, patients who lost part of their trachea because of cancer, trauma, or congenital problems had very few options. Normal treatments often used donor tissue or permanent synthetic tubes, which carried a high risk of infection, rejection, and long-term complications. This new bioprinted solution changed that completely, showing that the body could regenerate its own organ using its own cells.
Researchers said this project was built on almost 20 years of scientific development, beginning with lab experiments and animal trials as early as 2004. The team spent years perfecting the materials and structure of the printed organ to make sure it could safely support tissue growth once implanted in a human.
Although this specific 3D printer was designed only for Seoul St. Mary’s Hospital, the company said it hoped to expand production so that other hospitals could use similar technology in the near future.
The hospital confirmed that the patient was recovering well and that her windpipe was functioning normally. The case was under review for publication in a peer-reviewed medical journal, and researchers around the world were already calling it one of the most important advances in bioengineering this decade.
Dr. Marinho also mentioned that T&R Biofab’s earlier research, published in Nature Communications in 2019, had already shown the potential of 3D-printed heart tissue to repair damaged hearts in animal studies. “What we are seeing now with this patient is the next logical step,” he said.
The world’s first 3D-printed windpipe transplant showed that science was no longer limited to repairing organs — it was now capable of growing them.
