Stent with antimicrobial drainage lumen surface

Details Stent with antimicrobial drainage lumen surface Stent with antimicrobial drainage lumen surface

A - Human Necessities

61

L

A61L 31/14 (2006.01) A61L 31/10 (2006.01) A61L 31/16 (2006.01)

Patent

CA 2661692

Medical devices for implantation in a body vessel are provided. A medical device can include a support member enclosing an antimicrobial coating defining a drainage lumen extending through the support member. The antimicrobial coating preferably includes a metal alloy comprising beryllium, nickel, copper, cobalt and/or silicon. The metal alloy is desirably embedded in a porous biostable material, such as an ethylvinylacetate copolymer, configured to retain oxides of the antimicrobial material while being sufficiently porous to permit fluid in the drainage lumen to penetrate the antimicrobial coating. The medical device may be configured, for example, as a biliary or pancreatic stent.

L'invention concerne des dispositifs médicaux pour une implantation dans un vaisseau du corps. Un dispositif médical peut comprendre un élément de support entourant un revêtement anti-microbien définissant une lumière de drainage s'étendant à travers l'élément de support. Le revêtement anti-microbien comprend, de préférence, un alliage métallique comprenant le béryllium, le nickel, le cuivre, le cobalt et/ou le silicium. L'alliage métallique est, de façon souhaitable, noyé dans un matériau biostable poreux, tel qu'un copolymère éthylène-acétate de vinyle, configuré pour retenir des oxydes du matériau anti-microbien, tout en étant suffisamment poreux pour permettre à un fluide dans la lumière de drainage de pénétrer dans le revêtement anti-microbien. Le dispositif médical peut être configuré, par exemple, sous forme de stent biliaire ou pancréatique.

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