Continuous high-frequency oscillation breathing treatment apparatus
First Claim
Patent Images
1. A continuous high-frequency oscillation breathing treatment apparatus comprising:
- a source of gas under pressure;
a reduction regulator for regulating the flow from gas source;
means for interrupting continuous positive gas flow at a rate of at least 1 hertz and at most 15 hertz whereby the gas flow becomes pulsatile with a substantially constant pressure amplitude;
a patient interface circuit that incorporates a fixed venturi tube, encased in a shroud with at least one aperture of predetermined size, open to the ambient to allow ingress and egress of flow, and an aerosol entrainment port connectable to a nebulizer for entrainment of aerosol;
said means for interrupting continuous gas flow in combination with said at least one aperture calibrated to allow exhalation and prevent stacking of successive volumes of gas in the airway of the patient.
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Abstract
A continuous high-frequency oscillation breathing device delivers therapy during both inhalation and exhalation in order to assist in clearing secretions from the lungs. A fixed shrouded-venturi patient interface circuit is combined with medicated aerosol to deliver continuous high-frequency oscillation therapy. Fixed open apertures in the patient interface circuit allow ingress and egress of flow, and are calibrated to allow exhalation and prevent stacking of successive breaths.
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Citations
48 Claims
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1. A continuous high-frequency oscillation breathing treatment apparatus comprising:
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a source of gas under pressure;
a reduction regulator for regulating the flow from gas source;
means for interrupting continuous positive gas flow at a rate of at least 1 hertz and at most 15 hertz whereby the gas flow becomes pulsatile with a substantially constant pressure amplitude;
a patient interface circuit that incorporates a fixed venturi tube, encased in a shroud with at least one aperture of predetermined size, open to the ambient to allow ingress and egress of flow, and an aerosol entrainment port connectable to a nebulizer for entrainment of aerosol;
said means for interrupting continuous gas flow in combination with said at least one aperture calibrated to allow exhalation and prevent stacking of successive volumes of gas in the airway of the patient. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. The patient interface circuit for use with a continuous high-frequency oscillation breathing treatment apparatus comprising:
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means of connecting patient interface circuit to a continuous high-frequency oscillation breathing treatment apparatus;
a fixed venturi tube, encased in a shroud with at least one aperture of predetermined size, open to the ambient to allow ingress and egress of flow, and an aerosol entrainment port connectable to a nebulizer for entrainment of aerosol;
said at least one aperture of patient interface circuit calibrated with continuous high-frequency oscillation breathing treatment apparatus to allow exhalation and prevent stacking of successive volumes of gas in the airway of the patient.
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14. A continuous high-frequency oscillation breathing treatment apparatus comprising:
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a source of gas under pressure;
a reduction regulator for regulating the flow from gas source;
means for interrupting continuous positive gas flow at a predetermined, pre-set rate of at least 1 hertz and at most 15 hertz whereby the gas flow becomes pulsatile with a substantially constant pressure amplitude;
a patient interface circuit that incorporates a venturi tube, encased in a shroud with at least one aperture of predetermined size, open to the ambient to allow ingress and egress of flow, aerosol entrainment port connectable to a nebulizer for entrainment of aerosol;
said means for interrupting gas flow in combination with said at least one aperture calibrated to allow exhalation and prevent stacking of successive volumes of gas in the airway of the patient. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A continuous high-frequency oscillation breathing treatment apparatus comprising:
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a source of gas under pressure;
a pre-set reduction regulator for regulating the flow from gas source;
means for interrupting positive gas flow resulting in a predetermined, pre-set rate of at least 1 hertz and at most 15 hertz whereby the gas flow becomes pulsatile with a substantially constant pressure amplitude;
a patient interface circuit that incorporates a venturi tube, encased in a shroud with at least one aperture of predetermined size, open to the ambient, aerosol entrainment port connectable to a nebulizer for entrainment of aerosol;
said means for interrupting continuous gas flow in combination with said at least one aperture calibrated to allow exhalation and prevent stacking of successive volumes of gas in the airway of the patient. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. A continuous high-frequency oscillation breathing treatment apparatus comprising:
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a source of gas under pressure;
a reduction regulator for regulating the flow from gas source;
a patient interface circuit that incorporates a means for interrupting positive gas flow at a rate of at least 1 hertz and at most 15 hertz whereby the gas flow becomes pulsatile with a substantially constant pressure amplitude, a fixed venturi tube, encased in a shroud with at least one aperture of predetermined size, open to the ambient to allow ingress and egress of flow, an aerosol entrainment port connectable to a nebulizer for entrainment of aerosol, and said means for interrupting gas flow in combination with said at least one aperture calibrated to allow exhalation and prevent stacking of successive volumes of gas in the airway of the patient. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
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Specification