Laminar dressings, systems, and methods for applying reduced...

A - Human Necessities – 61 – M

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A61M 1/00 (2006.01)

Patent

CA 2735016

A system for applying a reduced pressure at a tissue site includes a reduced pressure source, a porous pad in fluid communication with the reduced pressure source, and a drape positionable over the porous pad to seal the porous pad at the tissue site. The porous pad includes a plurality of channel walls to form a plurality of channels between the channel walls. The channel walls are substantially liquid impermeable to prevent movement of a liquid through the channel walls but are gas permeable to allow movement of a gas through the channel walls as reduced pressure is applied at the tissue site. The liquid impermeability of the channel walls and the application of reduced pressure causes flow of the liquid to occur through the plurality of channels.

Système pour appliquer une pression réduite à un site tissulaire, comprenant une source de pression réduite, un tampon poreux en communication fluidique avec la source de pression réduite, et un drap positionnable au-dessus du tampon poreux pour isoler le tampon poreux au site tissulaire. Le tampon poreux comprend une pluralité de parois de canal pour former une pluralité de canaux entre les parois de canal. Les parois de canal sont sensiblement imperméables au liquide pour empêcher le passage d'un liquide à travers les parois de canal, mais sont perméables au gaz de manière à permettre la circulation d'un gaz à travers les parois de canal lorsqu'une pression réduite est appliquée au site tissulaire. L'imperméabilité au liquide des parois de canal et l'application d'une pression réduite entraînent la formation d'un écoulement du liquide à travers la pluralité de canaux.

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