A covered stent is a type of stent that has a covering or membrane over the metal mesh. The covering can be made of different materials such as polyethylene, polytetrafluoroethylene (PTFE), or silicone. Some key points about covered stents:- They are used to treat arterial aneurysms, prevent resteno

A fully covered esophageal SEMS stands for a fully covered esophageal self-expanding metal stent. Here are more details:- Self-expanding - The stent is made from a shape memory alloy that allows it to be compressed and inserted through the esophagus while collapsed. Once in place, it expands to wide