Method and apparatus for delivering oxygen into blood

Details Method and apparatus for delivering oxygen into blood Method and apparatus for delivering oxygen into blood

A - Human Necessities

61

M

A61M 37/00 (2006.01) A23L 2/54 (2006.01) A61M 1/32 (2006.01) B01F 3/04 (2006.01) C01B 13/00 (2006.01) C12M 1/04 (2006.01) D21C 9/147 (2006.01) A61M 1/16 (2006.01) A61M 25/00 (2006.01)

Patent

CA 2176601

A method and apparatus for delivering oxygen into an environ- ment of interest, such as blood plasma (22), having the characteristic of a low concentration of oxygen before delivery. The method includes the steps of preparing a mixture of oxygen and liquid, compressing the mixture so that the oxygen dissolves in the liquid to form an oxygen- enriched liquid, delivering the oxygen-enriched liquid to a catheter having an internal diameter and length which retains the oxygen in so- lution and prevents the formation of bubbles, positioning the catheter in the environment of interest, and injecting the oxygen-enriched liquid into the environment through the catheter, such that the environment rapidly becomes enriched in oxygen. The apparatus includes a catheter with drawn silica tubing (20) having narrowly defined passages through which oxygen-enriched liquid passes to oxygenate blood plasma (22).

Procédé et appareil d'apport d'oxygène dans un environnement particulier, tel que du plasma sanguin (22), présentant une caractéristique de faible concentration d'oxygène avant apport. Le procédé comprend les étapes consistant à préparer un mélange d'oxygène et d'un liquide, à comprimer le mélange de sorte que l'oxygène soit dissous dans le liquide afin de former un liquide enrichi en oxygène, à amener le liquide enrichi en oxygène à un cathéter présentant un diamètre interne ainsi qu'une longueur retenant l'oxygène en solution et empêchant la formation de bulles, à positionner le cathéter dans l'environnement particulier, et à injecter le liquide enrichi en oxygène dans ledit environnement par l'intermédiaire du cathéter, de sorte que l'environnement s'enrichisse rapidement en oxygène. L'appareil comprend un cathéter doté d'une tubulure (20) en silice étirée présentant des passages étroitement définis à travers lesquels du liquide enrichi en oxygène passe dans du plasma sanguin oxygéné (22).

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