A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
A61M 11/00 (2006.01) A61M 1/32 (2006.01) A61M 37/00 (2006.01)
Patent
CA 2224101
An apparatus (10) and method for delivering a high partial pressure of a gas into a liquid. The apparatus has a gas transfer device (12) with a housing (14) that includes upstream (16) and downstream regions, between which there is located a gas-liquid contacting region (20) with contacting members (22), such as hollow microporous fibers. A reservoir (36) of gas supplies the gas at a high pressure (P) to a flask (38) of gas-depleted liquid and to the gas transfer device (12). The reservoir (36) of gas provides hydrostatic pressure for urging the liquid through the contacting members (22) and propelling the gas around the contacting members (32) so that the gas does not diffuse across the contacting members (22). The gas-enriched liquid is then ducted to a high resistance delivery channel (44) for administration to a site of interest without effervescence, bubble formation, or significant disruption of laminar flow.
Un procédé et un appareil (10) permettent d'introduire un gaz sous haute pression partielle dans un liquide. L'appareil possède un dispositif de transfert de gaz (12) et une enceinte (14) qui comprend une région amont (16) et une région avale (18) entre lesquelles se trouve une région (20) de contact entre le gaz et le liquide ayant des éléments de contact (22) tels que des fibres microporeuses creuses. Un réservoir de gaz (36) fournit le gaz à haute pression (P) à une cuve (38) contenant un liquide appauvri en gaz ainsi qu'au dispositif (12) de transfert de gaz. Le réservoir (36) de gaz a une pression hydrostatique afin de pousser le liquide au travers des éléments de contact (22) et de propulser le gaz autour des éléments de contact afin que le gaz ne se diffuse pas au travers des éléments de contact (22). Le liquide enrichi par le gaz est ensuite conduit vers un canal d'administration à haute résistance pour amener l'écoulement vers un site d'interêt sans effervescence, sans formation de bulles ni disruption importante de l'écoulement laminaire.
Spears James R.
Osler Hoskin & Harcourt Llp
Wayne State University
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