Therapeutic foam

A - Human Necessities – 61 – K

Patent

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A61K 9/00 (2006.01)

Patent

CA 2546076

A therapeutic foam for the treatment of, inter alia, varicose veins comprises a sclerosing solution foamed with a physiological gas such as carbon dioxide, oxygen or a mixture thereof. The foam has a nitrogen content of less than 0.8 %. It may be generated using a pressurised canister system incorporating a fine mesh of micron dimensions through which the gas and sclerosing liquid are passed to make the foam. Alternativelt, the foam may be generated by passing gas and solution between two syringes through a fine mesh. Techniques are described for minimising the amount of nitrogen in a canister or syringe based product. A technique for generating and delivering foam simultaneously using a syringe based device is also disclosed.

Une mousse thérapeutique pour le traitement, entre autres, de varices comprenant une solution sclérosante sous forme de mousse contenant un gaz physiologique, notamment un dioxyde de carbone, de l'oxygène ou leur mélange. La mousse a une teneur en azote inférieure à 0,8 % et peut être générée au moyen d'un système absorbeur mis sous pression présentant un fin treillis de dimensions microniques à travers lequel le gaz et le liquide sclérosant passent pour former la mousse. Selon une variante, la mousse peut être générée par le passage du gaz et de la solution entre deux seringues à travers un fin treillis. Les techniques décrites permettent de minimiser la quantité d'azote dans un produit utilisant un absorbeur ou une seringue. L'invention concerne également une technique de génération et d'administration simultanée d'une mousse au moyen d'un dispositif utilisant une seringue.

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