Medicine:Bare-metal stent

From HandWiki
Bare-metal stent
A bare-metal stent diagonally from the front
ICD-9-CM00.63, 36.06, 39.90

A bare-metal stent is a stent made of thin, uncoated (bare) metal wire that has been formed into a mesh-like tube. The first stents licensed for use in cardiac arteries were bare metal – often 316L stainless steel. More recent "second generation" bare-metal stents have been made of cobalt chromium alloy.[1] While plastic stents were first used to treat gastrointestinal conditions of the esophagus, gastroduodenum, biliary ducts, and colon, bare-metal stent advancements led to their use for these conditions starting in the 1990s.[2]

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.[3]

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)[4]
  • Platinum chromium alloy: Omega BMS (Boston Scientific)[4]

See also

References

  1. ↑ Nikam N, Steinberg TB, Steinberg DH (2014). "Advances in stent technologies and their effect on clinical efficacy and safety". Med Devices (Auckl) 7: 165–78. doi:10.2147/MDER.S31869. PMID 24940085. 
  2. ↑ Park JS, Jeong S, Lee DH (2015). "Recent Advances in Gastrointestinal Stent Development". Clin Endosc 48 (3): 209–15. doi:10.5946/ce.2015.48.3.209. PMID 26064820. 
  3. ↑ Palmerini , Stents Bare-Metal (Jun 2015). "Evidence From a Comprehensive Network Meta-Analysis". J Am Coll Cardiol 65 (23): 2496–507. doi:10.1016/j.jacc.2015.04.017. PMID 26065988.  Lay summary
  4. ↑ 4.0 4.1 Jorge C, Dubois C (Aug 2015). "Clinical utility of platinum chromium bare-metal stents in coronary heart disease". Med Devices (Auckl). 8: 359–67. doi:10.2147/MDER.S69415. PMID 26345228. 



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