October 1, 2014
While any advance in additive manufacturing (AM) technology is good news, advances in an ever-growing medical portion of the market can be cause for celebration. Medical AM, including accurate surgical models, prosthetics, and other medical devices offer new treatment methods and help reduce costs. That’s not even including bioprinting, which is possibly the most exciting area of development for the medical field.
A group of students at the University of Toronto have advanced the technology of skin replacement surgery with the PrintAlive Bioprinter. The device was named the Canadian winner of the 2014 James Dyson Award, which qualifies the research team for a shot at the grand prize total of $60,000 in funding.
Repairing damaged areas of skin suffered by burn victims often requires removing skin from a healthy section of the body and grafting it onto the injury. This process is often quite painful for patients, and further increases risk of infection. The PrintAlive Bioprinter could eliminate the skin graft step by printing new skin directly onto the damaged area using the patient’s own cells to reduce the chances of rejection.
“Ninety percent of burns occur in low and middle income countries, with greater mortality and morbidity due to poorly-equipped health care systems and inadequate access to burn care facilities,” said Dr. Marc Jeschke, head of Sunnybrook Hospital’s Ross Tilley Burn Centre. “Regenerating skin using a patient’s own stem cells can significantly decrease the risk of death in developing countries.”
The process, which has been in development since 2008, is a complete solution that prints new, “hair follicles, sweat glands and other human skin complexities …” The PrintAlive Bioprinter itself is described as about the size of a toaster, and it prints skin cells into a gel that offers support for the new tissue. Skin is slowly built up in layers until the final graft is complete.
Along with the potential to win the international Dyson award, MaRS Innovation is assisting the research team develop the system for commercial usage. Current testing is performed on mice. Human trials are still three years away.
Below you’ll find a short video about the PrintAlive Bioprinter.