Bioresorbable Scaffold Technologies

Fully bioabsorbable scaffolds (BRS) are a novel approach that provides transient vessel support with drug delivery capability without the long-term limitations of the metallic drug-eluting stents (DES), such as permanent caging with or without malapposition. The technology has the potential to overcome many of the safety concerns associated with metallic DES, and possibly even convey further clinical benefit. Although the technology is still in its infancy, several devices have been tested in clinical trials and the initial results have been very promising. This review will discuss the emerging need for BRS, the theoretical advantages of this new technology over current generation metallic DES and review the status of the currently available BRS. In addition, we will discuss the ideal duration of bioresorption, the proven and potential clinical benefits and future perspectives of this rapidly progressing technology. (Circ J 2011; 75: 509-520)