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US 2011/0098612 A1Published application
Positive pressure systems and methods for increasing blood pressure and circulation
AssigneeAdvanced Circulatory Systems, Inc.
InventorKeith G. Lurie
Life of this patent
Estimating the term…
Abstract
In one embodiment, the invention provides a medical method for treating a person and comprises repeatedly compressing the person's chest. While repeatedly compressing the person's chest, the method further includes repeatedly delivering a positive pressure breath to the person and extracting respiratory gases from the person's airway using a vacuum following the positive pressure breath to create an intrathoracic vacuum to lower pressures in the thorax and to enhance blood flow back to the heart.
Claims16
1-40. (canceled)
A medical method for treating a person, the method comprising:
- interfacing a threshold valve with the person's airway, wherein the threshold valve is configured to open when the person's negative intrathoracic pressure reaches about −3 cm H2O to about −20 cm H2O to permit respiratory gases to flow into the person's airway;
- repetitively compressing the person's chest to provide a compression phase where the chest is compressed and a decompression phase where the chest is actively lifted using an active chest compression/decompression device;
- while repeatedly compressing and lifting the person's chest, extracting respiratory gases from the person's airway using a vacuum generated when actively lifting the chest with the active chest compression/decompression device while the threshold valve is interfaced with the person's airway to create an intrathoracic vacuum to lower pressures in the thorax;
- wherein the level of the negative intrathoracic pressure is repetitively lowered over at least two successive chest decompressions, and wherein use of the active chest compression/decompression device and the threshold valve generates an intrathoracic pressure that rapidly decreases as the person's chest is actively lifted.
1 more element
A medical method for treating a person, the method comprising:
- interfacing a threshold valve with the person's airway, wherein the threshold valve is configured to open when the person's negative intrathoracic pressure reaches about −3 cm H2O to about −20 cm H2O to permit respiratory gases to flow into the person's airway;
- repetitively compressing the person's chest to provide a compression phase where the chest is compressed and a decompression phase where the chest is actively lifted using an active chest compression/decompression device;
- while repeatedly compressing and lifting the person's chest, extracting respiratory gases from the person's airway using a vacuum generated when actively lifting the chest with the active chest compression/decompression device while the threshold valve is interfaced with the person's airway to create an intrathoracic vacuum to lower pressures in the thorax;
- wherein the level of the negative intrathoracic pressure is repetitively lowered over at least two successive chest decompressions.
1 more element
A medical method for treating a person, the method comprising:
- interfacing a threshold valve with the person's airway, wherein the threshold valve is configured to open when the person's negative intrathoracic pressure reaches about −3 cm H2O to about −20 cm H2O to permit respiratory gases to flow into the person's airway;
- repetitively compressing the person's chest to provide a compression phase where the chest is compressed and a decompression phase where the chest is actively lifted using an active chest compression/decompression device;
- while repeatedly compressing and lifting the person's chest, extracting respiratory gases from the person's airway using a vacuum generated when actively lifting the chest with the active chest compression/decompression device while the threshold valve is interfaced with the person's airway to create an intrathoracic vacuum to lower pressures in the thorax;
- wherein use of the active chest compression/decompression device and the threshold valve generates an intrathoracic pressure that rapidly decreases as the person's chest is actively lifted.
1 more element
Dependencies are inferred from the claim text.