Cardiovascular Stents: A Review of Past, Current, and Emerging Devices

Area of Science:

• Cardiovascular medicine
• Biomaterials science
• Medical device engineering

Background:

• Coronary artery disease (CAD) is a major global health issue, causing significant morbidity and mortality.
• Plaque buildup narrows arteries, impeding blood flow and oxygen supply to the heart.
• Vascular stents are the standard treatment, providing vessel support to maintain patency.

Purpose of the Study:

• To review the historical progression of vascular stent technology.
• To analyze the advancements from bare-metal stents to modern drug-eluting and bioresorbable stents.
• To identify areas for optimization in creating ideal vascular scaffolds.

Main Methods:

• Literature review of stent development and clinical outcomes.
• Analysis of material science and engineering innovations in stent design.
• Evaluation of the impact of different stent generations on patient health.

Main Results:

• Stent technology has evolved significantly, improving patient outcomes and reducing adverse effects.
• Drug-eluting stents (DES) reduce restenosis rates compared to bare-metal stents (BMS).
• Bioresorbable vascular scaffolds (BVS) offer a potential for vessel recovery but face challenges.

Conclusions:

• Continuous innovation in stent design is crucial for managing coronary artery disease.
• Future research should focus on optimizing stent materials and drug delivery for long-term efficacy.
• The development of an ideal vascular scaffold remains an ongoing pursuit in interventional cardiology.