Combined positive and negative pressure assist ventilation

Details Combined positive and negative pressure assist ventilation Combined positive and negative pressure assist ventilation

2011-03-22

2011-03-22

Yu, Justine R (Department: 3771)

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

C128S204180, C128S204210, C128S204260, C128S205120, C128S205130, C128S205140, C600S529000, C600S546000, C601S041000, C601S043000, C601S044000, C601S009000, C601S011000

Reexamination Certificate

active

07909034

ABSTRACT:
The present invention relates to a method of delivering combined positive and negative pressure assist ventilation to a patient, wherein a positive pressure is applied to the patient's airways to inflate the patient's lungs, a negative pressure is applied around the patient's ribcage and/or abdomen in order to reduce a load imposed by the ribcage and/or abdomen on the patient's lungs, and application of the positive and negative pressures is synchronized. The present invention also relates to a system for delivering combined positive and negative pressure assist ventilation to a patient, comprising a positive pressure ventilator connected to the patient's airways for applying a positive pressure to the patient's airways to inflate the patient's lungs, a negative pressure ventilator installed on the patient's ribcage and/or abdomen for applying a negative pressure around the patient's ribcage and/or abdomen in order to reduce a load imposed by the ribcage and/or abdomen on the patient's lungs, and a controller for synchronizing operation of the positive and negative pressure ventilators.

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