stent

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stent

Medicine a tube of plastic or sprung metal mesh placed inside a hollow tube to reopen it or keep it open; uses in surgery include preventing a blood vessel from closing, esp after angioplasty, and assisting healing after an anastomosis
References in periodicals archive ?
The move to stents has paid dividends, but within a few months after they are implanted, about 20 percent of bare-metal stents clog.
Altogether, the 12 patients received 21 stents (table 3).
Curiously, 12 people getting an endarterectomy had subsequent heart attacks, compared with 4 in the group getting stents, possibly because of greater physical stress during endarterectomy, comments Jack V.
Moses and his colleagues randomly assigned 1,058 heart patients to receive uncoated stents or drag-coated devices after their artery-widening procedures.
Some, stents trigger immune inflammation, and up to a third of them reclog--a process called restenosis--within a few months after their insertion.
A few years ago, physicians inserting stents administered massive doses of heparin and other blood thinners to prevent blockages, but the drugs caused bleeding internally and at the entry site for the catheter carrying the stent.