Understanding the Coronary Stent Graft ecosystem requires mapping the flow of inputs, transformation activities, and final delivery to clinical users. Upstream, raw‑material and component suppliers provide biocompatible metals, polymers, and radiopaque markers that form the basis of the device. Midstream actors—including OEM manufacturers, technology providers, and system integrators—convert these inputs into fully assembled grafts equipped with drug‑elution or coating technologies and compatible delivery catheters. Downstream, distributors and channel partners move the finished products to hospitals and catheterization labs, where interventional cardiologists and vascular surgeons perform implantations. Value is created through the convergence of material science, device engineering, and procedural expertise, and captured at each transition point via product pricing, service contracts, and regulatory approvals.