Medical ventilator triggering and cycling method and mechanism

Details Medical ventilator triggering and cycling method and mechanism Medical ventilator triggering and cycling method and mechanism

A - Human Necessities

61

M

A61M 16/00 (2006.01) A62B 7/00 (2006.01)

Patent

CA 2425113

A medical ventilator system (30) and method that triggers, cycles, or both based on patient effort, which is determined from cross-correlating patient flow and patient pressure. The medical ventilator is also controlled such that sensitivity to a patient initiated trigger increases as the expiratory phase of the breathing cycle progresses. The present invention also provides adaptive adjustment of cycling criteria to optimize the cycling operation.

La présente invention concerne un système de ventilateur médical (30) et un procédé permettant un déclenchement ou un fonctionnement en mode cyclique, ou les deux, sur la base des efforts du patient que l'on apprécie par une inter-corrélation entre le débit du patient et la pression du patient. La régulation de ce ventilateur médical se fait également de façon que la sensibilité au déclenchement à l'initiative du patient augmente au fur et à mesure de la progression de la phase d'expiration du cycle respiratoire. La présente invention pourvoit également à la reprise adaptative des critères de fonctionnement cyclique de façon à optimiser le fonctionnement cyclique.

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