Liquid ventilation method and apparatus

Details Liquid ventilation method and apparatus Liquid ventilation method and apparatus

A - Human Necessities

61

H

A61H 31/00 (2006.01) A61M 16/00 (2006.01) A61M 16/04 (2006.01) A61M 3/02 (2006.01)

Patent

CA 2247876

This invention is a method and apparatus for liquid ventilation to increase the efficacy of cardiopulmonary resuscitation (CPR). The method includes replacing gas in the lungs with an oxygen and carbon dioxide carrying liquid to eliminate the decreased pumping efficiency of the heart seen during conventional or active compression/decompression (ACD) closed chest CPR without a mechanical respirator. An advantage is provided by supplying a continuous flow of liquid (or gaseous) ventilation medium throughout the entire chest compression/re-expansion cycle, accelerating both gas exchange and cooling or warming of the patient or animal subject. In the apparatus (100), breathing liquid returns from a patient via tube (101) and is supplied via tube (190), tubes (101, 190) being connected to an endotracheal tube (200). The apparatus includes a reservoir (110), an oxygenator (120), and a heater (130).

L'invention concerne une méthode et un dispositif de ventilation liquide permettant d'accroître l'efficacité de la réanimation cardio-respiratoire. Selon la méthode, on remplace les gaz pulmonaires par un liquide contenant de l'oxygène et du gaz carbonique, de façon à lutter contre la diminution de l'efficacité du pompage cardiaque que l'on voit durant la réanimation à thorax fermé par compression/décompression conventionnelle ou active sans respirateur mécanique. Un avantage est lié au fait que l'on fournit un flux continu de milieu de ventilation liquide (ou gazeux) durant tout le cycle de compression/réexpansion thoracique, ce qui accélère à la fois les échanges gazeux et le refroidissement ou le réchauffement du patient ou de l'animal. Dans le dispositif (100), le liquide respiratoire revient du patient via un tube (101) et lui est amené via un autre tube (190), les deux tubes (101, 190) étant reliés à un tube endotrachéal (200). Le dispositif comprend un réservoir (110), un oxygénateur (120) et un dispositif de chauffage (130).

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