Apparatus and method for cardiac tissue modulation by...

A - Human Necessities – 61 – L

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A61L 31/06 (2006.01) A61B 17/00 (2006.01) A61L 31/14 (2006.01) A61M 1/00 (2006.01) A61M 27/00 (2006.01)

Patent

CA 2730362

A method and apparatus are provided for treating cardiac tissue to modulate ischemic heart tissue with topical sub-atmospheric pressure to minimize cell death and damage comprising placing a porous material proximate the damaged cardiac tissue to provide gaseous communication between one or more pores of the porous material and the damaged cardiac tissue, the porous mate-rial comprising at least one of an electrospun material, a cast material, an open-cell foam, and a printed material, sealing the porous material in situ over the damaged car-diac tissue to provide a region about the damaged cardiac tissue for maintaining sub-atmospheric pressure at the damaged cardiac tissue, operably connecting a vacuum source in gaseous communication with the porous material for producing sub-atmospheric pressure at the damaged cardiac tissue, and activating the vacuum source to provide sub-atmospheric pressure at the damaged cardiac tissue.

La présente invention concerne un procédé et un appareil pour traiter le tissu cardiaque en vue de moduler le tissu cardiaque ischémique avec une pression sous-atmosphérique topique afin de réduire au minimum la mort et les dommages cellulaires. Le procédé consiste à placer un matériau poreux au voisinage du tissu cardiaque endommagé en vue d'une communication gazeuse entre l'un ou plusieurs des pores du matériau poreux et le tissu cardiaque endommagé, ledit matériau poreux comprenant au moins un matériau électrofilé, un matériau coulé, une mousse à alvéoles ouvertes et un matériau imprimé, à fixer hermétiquement le matériau poreux in situ sur le tissu cardiaque endommagé de manière à obtenir une région autour du tissu cardiaque endommagé pour le maintien de la pression sous-atmosphérique au niveau du tissu cardiaque endommagé, à opérer le raccordement fonctionnel d'une source de vide de façon à la mettre en communication gazeuse avec le matériau poreux en vue de produire la pression sous-atmosphérique au niveau du tissu cardiaque endommagé, et à activer la source de vide de sorte à obtenir la pression sous-atmosphérique au niveau du tissu cardiaque endommagé.

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