Polymer compositions for intraluminal stent

Details Polymer compositions for intraluminal stent Polymer compositions for intraluminal stent

A - Human Necessities

61

L

A61L 31/04 (2006.01) C08F 220/18 (2006.01) C08F 220/22 (2006.01)

Patent

CA 2359494

Polymer compositions for use in forming a stent are described. The compositions include a monomer of an aliphatic ester of acrylic acid which has a glass transition temperature less than 25°C and a second monomer that copolymerizes with the first monomer and which has a glass transition temperature greater than 25°C. The components in the compositions are mixed in amounts suitable to give a copolymer having a glass transition temperature less than 25°C, or in case of block copolymers, having at least one glass transition temperature less than 25°C. A stent including polymer members formed from the described compositions is also disclosed.

La présente invention concerne des compositions destinées à la formation d'un stent. Les compositions de l'invention comprennent un monomère d'un ester aliphatique d'acide acrylique d'une température de transition vitreuse inférieure à 25 DEG C et un deuxième monomère capable de copolymérisation avec le premier monomère, d'une température de transition vitreuse supérieure à 25 DEG C. Les composants des compositions précitées sont mélangés dans des quantités permettant d'obtenir un copolymère d'une température de transition vitreuse inférieure à 25 DEG C ou, dans le cas de copolymères séquencés, présentant au moins une température de transition vitreuse inférieure à 25 DEG C. L'invention se rapporte également à un stent comprenant des éléments polymères formés à partir des compositions décrites ci-dessus.

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