Nasal respiratory devices for positive end-expiratory pressure
First Claim
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1. A nasal respiratory device for inducing positive end-expiratory pressure adapted to be secured in communication with a nasal cavity comprising:
- a passageway, an airflow resistor in communication with the passageway, wherein the airflow resistor is configured to have a non-zero threshold pressure for opening during expiration so that the airflow resistor is closed during expiration when the pressure across the airflow resistor is below the threshold pressure for opening, but the airflow resistor opens during expiration when the pressure across the airflow resistor exceeds the threshold pressure for opening during expiration; and
a holdfast configured to secure the airflow resistor in communication with the nasal cavity without covering the subject'"'"'s mouth.
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Abstract
Described herein are nasal respiratory devices, in particular, nasal respiratory devices configured to achieve positive end-expiratory pressure (PEEP) in a subject wearing the device. PEEP devices may have a threshold pressure for opening during expiration. In some variations, these devices have a threshold pressure for closing during expiration.
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Citations
28 Claims
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1. A nasal respiratory device for inducing positive end-expiratory pressure adapted to be secured in communication with a nasal cavity comprising:
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a passageway, an airflow resistor in communication with the passageway, wherein the airflow resistor is configured to have a non-zero threshold pressure for opening during expiration so that the airflow resistor is closed during expiration when the pressure across the airflow resistor is below the threshold pressure for opening, but the airflow resistor opens during expiration when the pressure across the airflow resistor exceeds the threshold pressure for opening during expiration; and
a holdfast configured to secure the airflow resistor in communication with the nasal cavity without covering the subject'"'"'s mouth. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A nasal respiratory device for inducing positive end-expiratory pressure adapted to be secured in communication with a nasal cavity comprising:
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a passageway;
an airflow resistor in communication with the passageway, wherein the airflow resistor comprises a biased valve having a non-zero threshold pressure for opening during expiration, so that the airflow resistor is closed during expiration when the pressure across the valve is below the threshold pressure for opening, but the valve opens during expiration when the pressure across the valve exceeds the threshold pressure for opening during expiration; and
a holdfast configured to secure the airflow resistor only in communication with the a nasal cavity or both nasal cavities. - View Dependent Claims (13, 14, 15)
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16. A nasal respiratory device for inducing positive end-expiratory pressure adapted to be secured in communication with a nasal cavity comprising:
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a passageway;
an airflow resistor in communication with the passageway, the airflow resistor including a first valve configured to open during inspiration and close during expiration, and a second valve configured to open during exhalation and close during inspiration;
wherein the second valve is configured so that it does not open until the pressure across the second valve exceeds a non-zero threshold pressure for opening; and
a holdfast configured to secure the airflow resistor in communication with the nasal cavity. - View Dependent Claims (17, 18, 19, 20)
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21. A nasal respiratory device for inducing positive end-expiratory pressure adapted to be secured in communication with a nasal cavity, the nasal respiratory device comprising:
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a first passageway and a second passageway;
an airflow resistor comprising a first valve in communication with the first passageway and a second valve in communication with the second passageway, wherein the first valve is configured to open during inspiration and close during expiration, and the second valve is configured to close during inspiration and open during expiration when the pressure across the second valve exceeds a non-zero threshold pressure for opening; and
a holdfast configured to secure the first and second passageways in communication with the nasal cavity. - View Dependent Claims (22, 23, 24)
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25. A method of treating a disorder comprising:
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securing a nasal respiratory device in communication with a subject'"'"'s nasal cavity without covering the subject'"'"'s mouth, wherein the respiratory device comprises an airflow resistor configured to have a non-zero threshold pressure for opening during expiration so that the airflow resistor is closed during expiration when the pressure across the airflow resistor is below the threshold pressure for opening, but the airflow resistor opens during expiration when the pressure across the valve exceeds the threshold pressure for opening during expiration; and
allowing the subject to breathe at least partly through the nasal respiratory device. - View Dependent Claims (26, 27, 28)
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Specification