System and method for generalized extracorporeal support

Details System and method for generalized extracorporeal support System and method for generalized extracorporeal support

A - Human Necessities

61

M

A61M 1/36 (2006.01)

Patent

CA 2300126

A system (10) and method for increasing gas concentration in blood which has use a generalized extracorporeal system (10) and method to treat hypoxemic blood from a patient (24) by mixing the blood with an oxygen supersaturated solution to generate hyperoxemic blood to be infused back to the patient (24). The extracorporeal system (10) comprises an extracorporeal tubing (12) through which blood from the patient (24) is circulated, a blood pump (14) for withdrawing blood from and delivering blood to the patient (24), at least one channel (18) for delivering oxygen-supersaturated fluid and a mixing region (39) for introducing supersaturated fluid without bubble formation. By infusing the oxygen-supersaturated fluid into the hypoxemic or normoxemic blood from the patient (24), hyperoxemic blood is thereby produced. The hyperoxemic blood is then returned to a central vein, right heart or artery of the patient (24) with the blood pump (14) at approximately the same volume delivery rate as blood volume withdrawal rate.

L'invention concerne un système (10) et un procédé d'augmentation de la concentration d'oxygène dans le sang uitlisé sous forme d'un système (10) et d'un procédé extracorporels globalisés pour traiter le sang hypoxémique d'un patient (24) par mélange du sang avec une solution sursaturée d'oxygène, afin de produire du sang hyperoxémique destiné à être reperfusé au patient (24). Le système extracorporel comprend une tubulure extracorporelle (12) par laquelle circule le sang provenant du patient (24), une pompe (14) à sang destinée à extraire le sang et à apporter du sang au patient (24), au moins un canal (18) destiné à fournir un fluide sursaturé d'oxygène et une région de mélange (29) permettant d'introduire du fluide sursaturé sans formation de bulles. La perfusion du fluide sursaturé d'oxygène dans le sang hypoxémique ou normoxémique provenant du patient (24) permet de produire du sang hyperoxémique. Le sang hyperoxémique est ensuite renvoyé à une veine centrale, au coeur droit ou à une artère droite du patient (24), la pompe (14) à sang ayant approximativement un débit d'entrée volumique et un débit de sortie volumique de sang identiques.

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