Methods and devices for providing mechanical ventilation with an open airway interface
First Claim
1. A ventilation system comprising:
- a ventilator for supplying ventilation gas;
a patient interface having a generally hollow cylindrical configuration defined by a central lengthwise axis and opposed open ends having substantially equivalent cross-sectional areas and including an open distal end with a distal opening axis coaxial with the central lengthwise axis and being in communication with a patient airway, an opposed open proximal end with a proximal opening axis coaxial with the central lengthwise axis and being in communication with ambient air, and an airflow channel between the distal end and the proximal end;
a gas delivery circuit, wherein the gas delivery circuit is adapted to attach to the patient interface in a coaxial relationship to the proximal opening axis of the open proximal end without occluding the patient interface to allow ambient air to flow from outside the patient interface to the patient airway and to allow patient spontaneous breathing to flow from inside, the patient interface to outside along the central lengthwise axis and the proximal opening axis without obstruction; and
wherein the ventilation gas entrains air from ambient and from the patient airway.
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Abstract
Methods, systems and devices are described for providing mechanical ventilation support of a patient using an open airway patient interface. The system includes gas delivery circuit and patient interface configurations to optimize performance and efficiency of the ventilation system. A ventilation system may include a ventilator for supplying ventilation gas. A patient interface may include distal end in communication with a patient airway, a proximal end in communication with ambient air, and an airflow channel between the distal end and the proximal end. A gas delivery circuit may be adapted to attach to the patient interface without occluding the patient interface to allow ambient air to flow from outside the patient interface to the patient airway. The ventilation gas may entrain air from ambient and from the patient airway.
1013 Citations
41 Claims
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1. A ventilation system comprising:
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a ventilator for supplying ventilation gas; a patient interface having a generally hollow cylindrical configuration defined by a central lengthwise axis and opposed open ends having substantially equivalent cross-sectional areas and including an open distal end with a distal opening axis coaxial with the central lengthwise axis and being in communication with a patient airway, an opposed open proximal end with a proximal opening axis coaxial with the central lengthwise axis and being in communication with ambient air, and an airflow channel between the distal end and the proximal end; a gas delivery circuit, wherein the gas delivery circuit is adapted to attach to the patient interface in a coaxial relationship to the proximal opening axis of the open proximal end without occluding the patient interface to allow ambient air to flow from outside the patient interface to the patient airway and to allow patient spontaneous breathing to flow from inside, the patient interface to outside along the central lengthwise axis and the proximal opening axis without obstruction; and wherein the ventilation gas entrains air from ambient and from the patient airway. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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25. The ventilation system of claim wherein the ventilation system is used to treat a disorder selected from the group consisting of:
- lung disease;
a breathing disorder;
a neuromuscular disorder; and
combinations thereof.
- lung disease;
Specification