src: interventions.onlinejacc.org
Bare-metal stent is a stent without a coating or covering (as used in covered stents drug-eluting stents). It is a mesh-like tube of thin wire. The first stents licensed for use in cardiac arteries were bare metal - often 316L stainless steel. More recent ('2nd generation') stents use cobalt chromium alloy. The first stents used in gastrointestinal conditions of the esophagus, gastroduodenum, biliary ducts, and colon were plastic; bare metal stents were first brought into the clinic in the 1990s.
Drug-eluting stents are often preferred over bare-metal stents because the latter carry a higher risk of restenosis, the growth of tissue into the stent resulting in vessel narrowing.
Video Bare-metal stent
Examples
- Stainless steel: R stent (OrbusNeich), Genous Bio-engineered R stent (OrbusNeich), (J&J, Cordis) BxVelocity, (Medtronic) Express2, Matrix Stent (Sahajanand Medical technologies)
- Cobalt-chromium alloy: Vision (Abbott Vascular); MP35N Driver stent (Medtronic)
- Platinum chromium alloy: Omega BMS (Boston Scientific)
Maps Bare-metal stent
See also
- Angioplasty
- Coronary stent
- Percutaneous coronary intervention
src: www.bmj.com
References
src: heart.bmj.com
External links
- Bare Metal Stents - Brown University
Source of article : Wikipedia
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