A medical stent is a small, expandable tube used to keep a passageway in the body open, typically within blood vessels or other tubular structures. Here’s a detailed explanation of how a medical stent works:### 1. **Purpose**: - **Restore Blood Flow**: In blood vessels, stents are used to keep art

Colonic stents are primarily used to manage obstructions in the colon, often due to malignant tumors. Here are the main types of colonic stents:### 1. **Self-Expanding Metal Stents (SEMS)**:- **Description**: Made of materials like nitinol (a nickel-titanium alloy), these stents expand on their own