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The IBS™ Sirolimus-Eluting Iron Bioresorbable Coronary Scaffold comprises a nitrided iron backbone, a pure zinc buffer layer, and a drug coating layer. As an absorbable scaffold, it is degradable while still maintaining its mechanical properties in a cycle of about 2-3 years, which is much longer than the degradation cycle of other BRSs that can make blood vessels have a higher patency rate and greatly reduce the possibility of restenosis or vascular collapse. The degradation products have been verified by multiple parties multiple times that they will not cause biological toxicity and can be implanted twice.
○ Backbone: Made from a high-purity nitrided iron-tube, with excellent mechanical properties (radial strength), which can provide effective support for blood vessels
○ Zinc Buffer layer: protect the iron backbone from degradation and corrosion during the early vascular recovery period (6-12 months)
○ Coating: Polylactic acid coating + sirolimus to inhibit VSMC proliferation and reduce the risk of vascular restenosis
○Radiopaque markers: Gold-radiopaque markers, enhance scaffold visibility, and facilitates the physician to position the scaffold and observe during follow-up
○ Degradation: The degradation period is about 2-3 years. It provides effective support 6 months after implantation and begins to degrade about 12 months later when the blood vessels have nearly recovered. 2 years after implantation, the scaffold is completely degraded.
○ Re-implantation: Compared with permanent stents, the IBS stent is completely degraded, and it can be re-implanted in the same position without causing harm or adding burden to the blood vessels or the human body.
The IBS™ Sirolimus-Eluting Iron Bioresorbable Coronary Scaffold has completed Phase III IRONMAN-III clinical trail in China. Follow-up results show that the 1500+ clinical results of IBS are comparable to Xience Primes, with no significant difference, once again proving the safety and effectiveness of iron-based stents.
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