International research team creates 3D-printed implants to repair tissue damage

Jerusalem — An international research team has developed three-dimensional (3D) printed implants that could open new possibilities for repairing severe tissue damage, according to a statement from Israel’s Institute of Technology on Sunday (15 March).

The researchers said the implant, known as a tissue flap graft, combines muscle and fat tissue with integrated blood and lymphatic vessels, enabling rapid integration into areas of damaged tissue.

The built-in vascular system quickly delivers oxygen and nutrients, whilst the lymphatic tissue helps remove fluid—two critical factors for tissue survival and function.

Currently, patients suffering severe tissue damage require autologous flap surgery, in which tissue is harvested from another part of their own body because transplants from other individuals are frequently rejected by the body.

This constraint could potentially be overcome by the newly engineered tissue flap. It could also lead to the development of implants customised specifically to each patient’s injury.

In mouse trials, the tissue flap rapidly integrated with host tissue, supporting normal muscle growth, stable fat cells, and good blood flow.

The researchers used a specialised bio-ink and a bioreactor to cultivate blood vessels under conditions that mimicked natural blood flow.

Although the testing was conducted on mice, the tissue used was created from human cells. The research team is now transitioning to trials on larger animals as a step towards human clinical application.

According to the statement, this breakthrough represents a significant step towards developing laboratory-grown artificial tissue that can be implanted to treat injuries, burns, and surgical needs.