Bioresorbable stents: Current and upcoming bioresorbable technologies.

Area of Science:

• Interventional Cardiology
• Biomaterials Science
• Cardiovascular Engineering

Background:

• Metallic drug-eluting stents (DES) have limitations including late in-stent restenosis and permanent vessel caging.
• Bioresorbable scaffolds (BRS) are designed for temporary vessel support during healing, promoting restoration of vasomotion.
• Existing reviews focus on clinical programs and scaffold technologies, with limited information on biomaterial mechanistic differences.

Purpose of the Study:

• To review the current status of various bioresorbable scaffold technologies and materials.
• To explore novel strategies for enhancing material mechanical properties and optimizing scaffold degradation.
• To summarize the clinical performance of bioresorbable scaffolds to date.

Main Methods:

• Comprehensive literature review of bioresorbable scaffold technologies and biomaterials.
• Analysis of strategies for improving mechanical properties and degradation profiles of BRS.
• Synthesis of data from clinical trials and studies evaluating BRS performance.

Main Results:

• Overview of diverse biomaterials utilized in current and emerging BRS.
• Discussion of advanced techniques to tailor scaffold mechanical strength and resorption rates.
• Summary of clinical outcomes, including efficacy and safety of BRS in treating coronary artery disease.

Conclusions:

• Bioresorbable scaffolds represent a significant advancement over traditional metallic stents.
• Understanding biomaterial properties is crucial for optimizing BRS design and function.
• Continued research and clinical evaluation are essential for the widespread adoption of BRS.