A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
A61M 16/00 (2006.01) A62B 7/00 (2006.01)
Patent
CA 2647097
A control system for a high frequency oscillating ventilator (HFOV) includes an oscillator controller and a mean airway pressure (MAP) controller. The HFOV includes a reciprocating piston which is adapted to generate positive and negative pressure waves for delivery to a patient airway. The oscillator controller comprises a pair of closed loop control circuits including an oscillator pressure loop and a centering loop which are collectively adapted to regulate frequency and amplitude of piston reciprocations and centering of the piston. The MAP controller comprises a closed loop control circuit that is adapted for regulating MAP at the patient utilizing feedback in the form of patient circuit pressure. Likewise, the oscillator controller utilizes patient circuit pressure as well as piston displacement feedback in order to regulate movement of the piston.
L'invention porte sur un système de commande d'un appareil de ventilation pulmonaire à fréquence élevée comportant un oscillateur et un régulateur de la pression moyenne des voies aériennes. L'appareil comporte un piston alternatif produisant des ondes de pression positives et négatives appliquées aux voies aériennes du patient. L'oscillateur comprend deux circuits de commande en boucle fermée incluant une boucle de pression et une boucle de centrage concourant à réguler la fréquence et l'amplitude des courses alternatives du piston et à centrer le piston. Le régulateur de pression moyenne des voies aériennes comporte un circuit de commande en boucle fermée régulant la pression appliquée au patient et utilisant une information en retour sous la forme de la pression du circuit du patient. De même, l'oscillateur utilise la pression du circuit du patient et une information en retour sur le déplacement du piston pour réguler les mouvements.
Cardinal Health 207 Inc.
Carefusion 207 Inc.
Robic
LandOfFree
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