Hydrogel filaments for biomedical uses

A - Human Necessities – 61 – L

Patent

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Details

A61L 31/04 (2006.01) A61L 31/14 (2006.01) A61L 31/18 (2006.01)

Patent

CA 2709379

Described herein are apparatus, compositions, systems and associated methods to occlude structures and malformations with radiopaque hydrogel filaments with delayed controlled rates of expansion permitting the repositioning of the device once inside the structure or malformation. Further described is a device for implantation in an animal comprising a difunctional, low molecular weight ethylenically unsaturated shapeable macromer; an ethylenically unsaturated monomer; and a radiopaque element, wherein said device contains no support members. Methods of forming such devices are also disclosed.

La présente invention concerne un appareil, des compositions, des systèmes et des procédés associés pour occlure des structures et des malformations avec des filaments d'hydrogel radio-opaques ayant des taux de dilatation contrôlés retardés permettant le repositionnement du dispositif une fois à l'intérieur de la structure ou malformation. La présente invention concerne en outre un dispositif pour implantation dans un animal comprenant un macromère formable à insaturation éthylénique, difonctionnel, de faible poids moléculaire; un monomère à insaturation éthylénique; et un élément radio-opaque, où ledit dispositif ne contient pas d'éléments de support. La présente invention concerne en outre des procédés de formation de tels dispositifs.

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