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Stent grafts, or endo-grafts, are a more permanent solution in the hemodynamically unstable patient and are an important part of the tool kit for EVTM. They are self-expanding artificial reconstructions of vessels with fabric coating deployed inside the original vessel and help to gain temporary control, stop the hemorrhage and repair the ...
Chimney: In TEVAR, a covered stent placed from the ascending aorta to a great vessel (e.g., innominate artery) and adjacent to the main body of the EVAR is termed a chimney. In anatomic position, blood flows superiorly through a chimney-stent graft into the great vessel, just as smoke flows up a chimney.
A bioresorbable stent is a tube-like device that is used to open and widen clogged heart arteries and then dissolves or is absorbed by the body. It is made from a material that can release a drug to prevent scar tissue growth. It can also restore normal vessel function and avoid long-term complications of metal stents. [1] [2]
The major benefit of drug-eluting stents (DES) when compared to bare-metal stents (BMS) is the prevention of in-stent restenosis (ISR). [70] Restenosis is a gradual re-narrowing of the stented segment that occurs most commonly between 3–12 months after stent placement. [ 119 ]
Angioplasty, also known as balloon angioplasty and percutaneous transluminal angioplasty, is a minimally invasive endovascular procedure used to widen narrowed or obstructed arteries or veins, typically to treat arterial atherosclerosis.
Covered stents carry the advantage of preventing tumours from growing into the stent, although they run the risk of increased migration after deployment. [6] A plastic self-expanding stent (Polyflex, Boston Scientific) has also been developed for similar applications. It confers an additional advantage as it is designed to be removable, and may ...
MERCI Retriever L5. The MERCI Retriever is a medical device designed to treat Ischemic Strokes.The name is an acronym for Mechanical Embolus Removal in Cerebral Ischemia. . Designed by University of California, Los Angeles in 2001, MERCI was the first device approved in the U.S. to remove blood clots in patients who had acute brain isch
A significant reduction in the rate of cardiac mortality in patients treated with bivalirudin monotherapy versus UFH plus a GP IIb/IIIa inhibitor was maintained at 1 year in the HORIZONS AMI trial (2.1% vs. 3.8%)The incidence of stent thrombosis at 1 year was also similar between the 2 treatment groups (3.5% in the Angiomax group vs. 3.2% in ...