PORTABLE POSITIVE AIRWAY PRESSURE APPARATUS AND METHOD FOR ATTENUATING THE NOISE EMITTED THEREFROM
First Claim
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1. A portable CPAP apparatus, comprising:
- a housing, wherein the housing defines a first and a second acoustic chamber, the first acoustic chamber having a volume and a first inlet port, the first inlet port defining a length and cross-sectional area that is proportionally related to the volume of the first chamber and the second acoustic chamber having a volume and a second inlet port, wherein the second inlet port extends from the first acoustic chamber into the second acoustic chamber; and
a blower unit that is disposed within the second acoustic chamber.
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Abstract
The systems and methods described herein provide a quiet, light-weight, and portable system and apparatus for providing positive air pressure to a patient. The systems may include a housing with an inlet port, a vibrationally isolated blower unit positioned in an inner chamber, and an outlet port for delivery of the pressurized air from the blower unit. The inlet port and outlet port may each have a tube with dimensions that are defined in relation to the inner chamber so as to reduce the overall noise output of the system.
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Citations
30 Claims
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1. A portable CPAP apparatus, comprising:
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a housing, wherein the housing defines a first and a second acoustic chamber, the first acoustic chamber having a volume and a first inlet port, the first inlet port defining a length and cross-sectional area that is proportionally related to the volume of the first chamber and the second acoustic chamber having a volume and a second inlet port, wherein the second inlet port extends from the first acoustic chamber into the second acoustic chamber; and a blower unit that is disposed within the second acoustic chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A system for providing continuous positive air pressure to a patient, comprising:
a continuous positive air pressure apparatus having, a housing, wherein the housing defines a first and a second acoustic chamber, the first acoustic chamber having a volume and a first inlet port, the first inlet port defining a length and cross-sectional area that is proportionally related to the volume of the first chamber and the second acoustic chamber having a volume and a second inlet port; a blower unit that is disposed within the single acoustic chamber; an adapter, having a proximal end and a distal end, wherein the proximal end is in communication with the blower unit through a blower outlet tube and the distal end extending outward from the apparatus; and a patient interface system detachably connected to the distal end of the adapter. - View Dependent Claims (18, 19, 20, 21, 22)
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23. A method for reducing the amount of noise released from a portable CPAP device while in operation, comprising:
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providing a housing wherein the housing defines a first and a second acoustic chamber, routing the flow of air through a first inlet that is sealed from and passes through the second acoustic chamber into the first acoustic chamber; routing the flow of air from the first acoustic chamber into the second acoustic through a second inlet port, wherein a blower is mounted within the second acoustic chamber; and routing the flow of air from the second acoustic chamber through an outlet port that is sealed from and passes through the first chamber. - View Dependent Claims (24, 25)
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26. A positive air pressure apparatus, comprising:
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a housing, wherein the housing defines an acoustic chamber having a volume, an inlet port, and an outlet port, wherein the inlet port extends through an exterior wall of the housing and has a length and cross-sectional area proportionally defined by the volume of the acoustic chamber, and wherein a majority of the length of the inlet port is disposed inside the acoustic chamber; and a blower unit disposed within the acoustic chamber, wherein the blower unit is vibrationally isolated from the housing. - View Dependent Claims (27, 28, 29)
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30. A method for reducing making a portable cpap system comprising the steps of:
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determining the desired size of the cpap system; determining the desired airflow and matching the desired airflow with a blower; forming a first acoustical chamber having an inlet port and tube that are proportional to the volume of chamber, wherein a frequency low pass filter is created; and reduce the area of the inlet port until the noise generated by the blower is no longer offset by the reduction in area.
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Specification