Waterproof portable infusion device having a casing with...

A - Human Necessities – 61 – M

Patent

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Details

A61M 5/142 (2006.01) A61M 5/145 (2006.01)

Patent

CA 2553194

An external infusion device enclosed in a multiple-housing casing. Enclosed within an outer wall, a first housing encloses a reservoir of liquid and a drive mechanism. A second housing encloses a pump and electronics for controlling the drive mechanism to dispense the liquid from the reservoir according to a selected pattern. A separate third housing encloses a battery or batteries. The first and third housings are vented to atmosphere via primary vents with hydrophobic barriers. The second housing is vented to at least one of the first and third housings via a secondary vent with a hydrophobic barrier. The hydrophobic barriers allow passage of air, and allow pressure equalization, but prevent passage of liquid. Liquid entering one housing is prevented from flowing into the other adjoining housings.

L'invention concerne un dispositif de perfusion externe contenu dans une enveloppe comportant de multiples corps. Un premier corps, contenu dans une paroi extérieure, contient un réservoir de liquide et un mécanisme d'entraînement. Un second corps contient une pompe et des éléments électroniques destinés à commander le mécanisme d'entraînement en vue de la distribution, selon un schéma sélectionné, du liquide provenant du réservoir. Un troisième corps séparé contient un ou plusieurs accumulateur(s). Les premier et troisième corps sont aérés vers l'atmosphère par l'intermédiaire de trous primaires pourvus d'une barrière hydrophobe. Le second corps est aéré vers le premier ou le troisième corps, par l'intermédiaire d'un trou secondaire pourvu d'une barrière hydrophobe. Les barrières hydrophobes permettent à l'air de passer et assurent une égalisation de la pression, mais empêchent tout passage de liquide ; ce qui empêche le liquide pénétrant dans un des corps de s'écouler dans les corps adjacents.

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