```json
{
"content": [
{
"type": "paragraph",
"content": "The Coronary Drug Stent System ecosystem links upstream suppliers, midstream manufacturers, and downstream distributors that deliver devices to patients. Upstream actors provide biocompatible polymers, metal alloys, and drug compounds essential for drug‑eluting functionality. Midstream firms integrate these inputs, obtain regulatory clearance, and package finished stents. Downstream, hospitals, interventional cardiologists, and specialty distributors manage procurement and implantation, while payers influence market uptake. Value is captured through licensing, sales, and service agreements across this chain."
},
{
"type": "list",
"items": [
{ "text": "Raw material/component suppliers — provide polymer matrices, metal alloys, and drug compounds required for stent