A domestic research team has developed an innovative stent "structure" based on biodegradable magnesium alloys inspired by the diabolical ironclad beetle. (Nature)

By Koh Hyunjeong

Domestic researchers have found a method for enhancing the mechanical properties and flexibility of polymer and magnesium alloy stents by applying the outer wing structure of an insect.

The discovery is expected to reduce stress on blood vessels caused by stents.

Researchers Suh Il Won and Kim Jinwoo from the research team of Jeonbuk National University professor Park Chan Hee on Feb. 10 announced their development of an innovative stent "structure" based on a biodegradable magnesium alloy.

A stent is a medical device implanted in the human body for treating arteriosclerosis, but the limit of a conventional stent is permanent residence in the body once inserted.

To resolve this issue, the latest studies focus on creating stents made of biodegradable polymer and magnesium alloy. Yet their low mechanical properties and flexibility raise the risk of breakage in curved blood vessels.

Suh and Kim proposed applying the unique structure of the outer wings of the diabolical ironclad beetle to the design of stents made with polymer and magnesium alloy. Bending tests showed that the average stress value on the structure fell up to 57% compared to conventional stents.

To link research and development of medical devices to non-clinical simulations, the team will collaborate with the university's Glocal Interventional Mechano-Biotechnology Convergence Research Center and Innovative Interventional Medical Device Testing Center.

hjkoh@korea.kr