Apparatus and method of delivery of gas-supersaturated liquids

A - Human Necessities – 61 – M

Patent

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Details

A61M 5/00 (2006.01) A61M 1/16 (2006.01) A61M 25/00 (2006.01) C12M 1/04 (2006.01) A61M 1/32 (2006.01)

Patent

CA 2207410

This invention is an apparatus (10) for delivery of a gas, such as oxygen, solution into an environment (such as a coronary artery). The apparatus includes a high-pressure tubular housing (12) defining a lumen (14) there within. A plurality of axially disposed concentric tubes (16) are supported within the lumen (14). Each defines an annular space (18) between adjacent tubes. One or more supports (20) extend radially inwardly from the tubular housing (12). The supports are connected to the concentric tubes (16) to prevent radially or axially migration thereof during high-pressure infusion of the oxygen supersaturated physiologic solution. The method includes the steps of compressing a carrier to form a compressed carrier for transporting the gas to eliminate gas nuclei before exposure of the carrier to the gas; exposing the compressed carrier to the gas under pressure to form a gas saturated compressed carrier; transporting the gas saturated compressed carrier to the delivery system; and infusing the gas supersaturated compressed carrier from the delivery system at an exit port to the environment without associated bubble formation and cavitation proximate the exit port.

Cette invention concerne un appareil (10) destiné à convoyer une solution gazeuse, à base d'oxygène par exemple, dans un milieu donné, tel qu'une artère coronaire. Cet appareil se compose d'un corps tubulaire à haute pression (12), lequel comprend un lumière (14). Plusieurs tubes concentriques (16) sont disposés dans l'axe de ce corps à l'intérieur de la lumière (14), un espace annulaire (18) existant entre chaque tube et les tubes voisins. Un ou plusieurs supports (20), s'étendant radialement depuis le bord du corps tubulaire (12) vers son centre, sont reliés aux tubes concentriques (16) afin d'éviter tout déplacement radial ou axial de ces derniers lors de l'introduction sous haute pression d'une solution physiologique sursaturée en oxygène. Le procédé comprend plusieurs étapes. Il s'agit tout d'abord de comprimer un support, lequel servira à véhiculer le gaz, de manière à éliminer les noyaux gazeux avant que ledit support soit exposé au gaz. Le support comprimé est ensuite exposé au gaz afin d'obtenir un support comprimé saturé en gaz, lequel sera transporté jusqu'au système de distribution. Enfin, le support comprimé sursaturé en gaz est introduit, depuis le système de distribution, dans le milieu donné par l'intermédiaire d'un orifice de sortie, sans qu'il y ait formation de bulles ni cavitation à proximité dudit orifice de sortie.

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