System and method for use of agent in combination with...

A - Human Necessities – 61 – M

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A61M 27/00 (2006.01) A61F 13/02 (2006.01) A61M 1/00 (2006.01)

Patent

CA 2657220

A method for uniformly coating a foam or dressing with a polymer-based or metal-based coating incorporating at least one therapeutic or prophylactic agent and a foam or dressing formed by this process. Such foam or dressing is particularly useful in combination with subatmospheric pressure tissue treatment, wherein the foam or dressing formed by the process serves as at least a portion of a screen placed in contact with the tissue and enclosed under a cover. During application of a subatmospheric pressure within the space defined by the cover, the screen compresses and conforms to the tissue, increasing an area of contact between the screen and the tissue. The coating releases the agent directly to the area of contacted tissue. In embodiments where the agent is silver, the coating releases silver ions directly to the contacted tissue to reduce bacterial density thereon.

L'invention concerne un procédé pour revêtir de façon uniforme une mousse ou un pansement avec un revêtement à base de polymère ou à base de métal incorporant au moins un agent thérapeutique ou prophylactique et une mousse ou pansement formé par ce procédé. Une telle mousse ou un tel pansement sont particulièrement utiles en combinaison avec le traitement d'un tissu à pression sous-atmosphérique, la mousse ou le pansement formé par le procédé servant au moins en tant que partie d'un écran placé en contact avec le tissu et enfermé sous un couvercle. Pendant l'application d'une pression sous-atmosphérique dans l'espace défini par le couvercle, l'écran compresse et se conforme au tissu, augmentant une aire de contact entre l'écran et le tissu. Le revêtement libère l'agent directement vers la zone de tissu en contact. Dans les modes de réalisation où l'agent est l'argent, le revêtement libère des ions argent directement vers le tissu en contact pour réduire la densité bactérienne sur celui-ci.

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