The ATLAS coronary stent graft system is a covered stent platform from INVAMED, designed for use in specific coronary scenarios such as vessel perforations or pseudoaneurysms, where extraluminal sealing is needed in addition to standard scaffolding. Unlike conventional bare-metal or drug-eluting stents, a covered stent graft incorporates a membrane layer intended to contain blood flow within the vessel lumen. This overview describes the general design purpose of covered coronary stent grafts as reflected on invamed.com; use in any individual case is determined by the treating interventional cardiologist.
What Is a Coronary Stent Graft?
A coronary stent graft, sometimes called a covered stent, combines a metallic stent scaffold with a covering material that spans the stent structure. This covering is intended to create a barrier that helps prevent extravasation of blood through a vessel wall defect while still allowing blood to flow through the stented segment.
- Provides mechanical scaffolding similar to a standard coronary stent
- Adds a covering layer intended to seal against perforations or contained ruptures
- Designed to maintain coronary artery patency while addressing a structural vessel wall issue
- Represents a distinct device category from routine bare-metal or drug-eluting stents used for typical atherosclerotic blockages
When Might a Covered Stent Be Considered?
Covered coronary stents are generally reserved for specific, less common clinical situations rather than routine atherosclerotic lesion treatment. These may include:
- Coronary artery perforation occurring during a percutaneous coronary intervention
- Coronary pseudoaneurysm, a localized, contained disruption of the vessel wall
- Other scenarios where extraluminal sealing is clinically indicated alongside vessel scaffolding
The decision to use a covered stent graft, as opposed to other management strategies, depends entirely on the specific clinical presentation and is made by the interventional cardiology team managing the case in real time.
What Design Considerations Apply to Covered Stents?
Covered stent grafts generally involve trade-offs compared to conventional stents. The covering material can affect device profile and deliverability, and coverage of the stent struts may have implications for side-branch flow if the covered segment overlaps a branching vessel. These are factors that operators weigh carefully given the typically urgent or complex nature of the scenarios in which covered stents are used.
What Regulatory and Use Information Applies?
Device availability and regulatory status vary by country. Please contact INVAMED or your authorized local distributor for current regulatory information applicable to your region.
Frequently Asked Questions
How is a coronary stent graft different from a standard drug-eluting stent?
A standard drug-eluting stent is an uncovered mesh scaffold with a drug coating designed to reduce restenosis in routine atherosclerotic blockages. A coronary stent graft adds a covering material and is generally used for a different purpose, specifically to seal vessel wall defects such as perforations, rather than for routine lesion treatment.
Is a covered stent used for typical coronary artery disease blockages?
Covered stent grafts are generally reserved for specific complications or vessel wall abnormalities rather than routine atherosclerotic narrowing, where standard bare-metal or drug-eluting stents are more commonly used.
Who determines whether a covered stent is needed during a procedure?
This determination is made by the interventional cardiologist performing the procedure, based on real-time angiographic findings and the specific clinical situation encountered, such as an unexpected vessel perforation.
Related INVAMED Resources
- ATLAS Drug Eluting Coronary Stent System Cobalt Chromium
- Coronary Artery Disease & Cardiac Interventions
- Contact INVAMED for Product Information
Medical Disclaimer: This article is provided for general informational and educational purposes only and does not constitute medical advice, diagnosis, or treatment recommendation. It is not a substitute for consultation with a qualified healthcare professional. Product indications, availability, and regulatory status vary by country. Always refer to the official Instructions for Use (IFU) and consult a licensed physician for guidance specific to your situation. INVAMED devices are intended for use by trained healthcare professionals.