[Absorbable coronary stents. New promising technology]

Area of Science:

• Cardiovascular medicine
• Biomaterials science
• Interventional cardiology

Context:

• Coronary stent implantation is a standard procedure, but permanent implants limit future interventions.
• Research is ongoing for temporary stenting solutions, including absorbable polymer and metal stents.
• Magnesium stents represent a novel approach to temporary coronary stenting.

Purpose:

• To evaluate the safety and efficacy of an absorbable magnesium stent in coronary arteries.
• To assess the degradation process and impact on vasomotion.
• To determine the feasibility of noninvasive imaging post-implantation.

Summary:

• The absorbable magnesium stent demonstrated low recoil and strut absorption, confirmed by intravascular ultrasound (IVUS).
• The stent was invisible to standard imaging modalities like CT and MRI, allowing for noninvasive follow-up.
• The study met its primary endpoint, showing a low ischemia-driven target lesion revascularization rate and restoration of vasomotion.

Impact:

• Avoids permanent foreign-body implantation, facilitating future revascularization and bypass grafting.
• Enables noninvasive imaging of coronary arteries using CT and MRI.
• Opens possibilities for prophylactic stenting and pediatric applications.