Patient interface member for use in an aerosol inhalation system
First Claim
1. A device for use in an aerosol inhalation system for delivering aerosolized medication comprising:
- a means for generating aerosolized medication;
a reservoir having a first compartment and a second compartment;
an accessory having a housing that is operatively connected to the means for generating aerosolized medication such that the aerosolized medication is delivered to the housing, wherein the housing includes a first leg that is fluidly attached to the means of generating aerosolized medication, a second leg that is in selective communication with the first storage compartment and a third leg that is always in fluid communication with the second storage compartment, wherein there is an unobstructed flow path between the first and third legs; and
a patient interface member removably connected to the housing and being separate therefrom, the patient interface member for placement about a face of the patient and in communication with a mouth of the patient for delivering the aerosolized medication, wherein the patient interface member comprises a face mask that includes a main body and an integral fluid receiving section that extends therefrom and is sealingly coupled to a patient interface section of the housing to permit the aerosolized medication to selectively flow into the interior of the face mask by passing through the fluid receiving section, wherein there is an unobstructed flow path between the second storage compartment and the fluid receiving section of the face mask, the face mask having a first flow control means that is free of attachment to the housing and is integral to the face mark and is positionable between an open position where aerosolized medication flows into an interior of the mask when the patient interface section of the housing is mated with the fluid receiving section of the face mask and when the patient inhales and a closed position when the patient exhales, the first flow control means being positioned within a flow path that is defined by the fluid receiving section, the exhaled gas being vented from the interior of the patient interface member through at least one vent port that is part of the face mask;
wherein the housing includes a main body section that is in communication with first end of each of the first, second and third legs, the main body section having a patient interface section that sealingly mates with a complementary fluid receiving section of the patient interface member so that gas flowing into and through the housing is directed to the patient interface member;
wherein the second compartment is for storing aerosolized medication that is delivered into the housing through the first leg and flows through the third leg to the second compartment and the first compartment stores non-medicated gas;
wherein the second leg has a second flow control means associated therewith and a supplemental gas port associated therein for receiving a supplemental gas, the second flow control means being in the form of an inhalation valve that is disposed between the main body section and the supplemental gas port such that a clear open flow path is always defined between the supplemental gas port and the first compartment such that the supplemental gas can flow into the main body section only when the second flow control means is open; and
when the second flow control means is closed, the supplemental gas flows into the first compartment where it is stored until the second flow control means opens.
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Accused Products
Abstract
A device for use in an aerosol inhalation system for delivering aerosolized medication includes a housing that is operatively connected to a source of aerosolized medication such that the aerosolized medication is delivered to the housing. The device also includes a patient interface member removably connected to the housing and being separate therefrom. The patient interface member is in the form of a face mask for placement about a face of the patient and in communication with a mouth of the patient for delivering the aerosolized medication. The patient interface member incorporates an integral inhalation valve and safety feature for protecting against displacement of the inhaltation valve.
100 Citations
13 Claims
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1. A device for use in an aerosol inhalation system for delivering aerosolized medication comprising:
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a means for generating aerosolized medication; a reservoir having a first compartment and a second compartment; an accessory having a housing that is operatively connected to the means for generating aerosolized medication such that the aerosolized medication is delivered to the housing, wherein the housing includes a first leg that is fluidly attached to the means of generating aerosolized medication, a second leg that is in selective communication with the first storage compartment and a third leg that is always in fluid communication with the second storage compartment, wherein there is an unobstructed flow path between the first and third legs; and a patient interface member removably connected to the housing and being separate therefrom, the patient interface member for placement about a face of the patient and in communication with a mouth of the patient for delivering the aerosolized medication, wherein the patient interface member comprises a face mask that includes a main body and an integral fluid receiving section that extends therefrom and is sealingly coupled to a patient interface section of the housing to permit the aerosolized medication to selectively flow into the interior of the face mask by passing through the fluid receiving section, wherein there is an unobstructed flow path between the second storage compartment and the fluid receiving section of the face mask, the face mask having a first flow control means that is free of attachment to the housing and is integral to the face mark and is positionable between an open position where aerosolized medication flows into an interior of the mask when the patient interface section of the housing is mated with the fluid receiving section of the face mask and when the patient inhales and a closed position when the patient exhales, the first flow control means being positioned within a flow path that is defined by the fluid receiving section, the exhaled gas being vented from the interior of the patient interface member through at least one vent port that is part of the face mask; wherein the housing includes a main body section that is in communication with first end of each of the first, second and third legs, the main body section having a patient interface section that sealingly mates with a complementary fluid receiving section of the patient interface member so that gas flowing into and through the housing is directed to the patient interface member; wherein the second compartment is for storing aerosolized medication that is delivered into the housing through the first leg and flows through the third leg to the second compartment and the first compartment stores non-medicated gas; wherein the second leg has a second flow control means associated therewith and a supplemental gas port associated therein for receiving a supplemental gas, the second flow control means being in the form of an inhalation valve that is disposed between the main body section and the supplemental gas port such that a clear open flow path is always defined between the supplemental gas port and the first compartment such that the supplemental gas can flow into the main body section only when the second flow control means is open; and
when the second flow control means is closed, the supplemental gas flows into the first compartment where it is stored until the second flow control means opens. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A device for use in an aerosol inhalation system for delivering aerosolized medication comprising:
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a means for generating aerosolized medication; a reservoir having a first compartment and a second compartment; an accessory having a housing that is operatively connected to the means for generating aerosolized medication such that the aerosolized medication is delivered to the housing, wherein the housing includes a first leg that is fluidly attached to the means of generating aerosolized medication, a second leg that is in selective communication with the first storage compartment and a third leg that is always in fluid communication with the second storage compartment, wherein there is an unobstructed flow path between the first and third legs and there is an unobstructed flow path between the second storage compartment and the fluid receiving section of the face mask; and a patient interface member removably connected to the housing and being separate therefrom, the patient interface member for placement about a face of the patient and in communication with a mouth of the patient for delivering the aerosolized medication, wherein the patient interface member comprises a face mask that includes a main body and an integral fluid receiving section that extends therefrom and is sealingly coupled to a patient interface section of the housing to permit the aerosolized medication to selectively flow into the interior of the face mask by passing through the fluid receiving section, the face mask having a first flow control means that is free of attachment to the housing and is integral to the face mark and is positionable between an open position where aerosolized medication flows into an interior of the mask when the patient interface section of the housing is mated with the fluid receiving section of the face mask and when the patient inhales and a closed position when the patient exhales, the first flow control means being positioned within a flow path that is defined by the fluid receiving section, the exhaled gas being vented from the interior of the patient interface member through at least one vent port that is part of the face mask; wherein the housing includes a main body section that is in communication with first ends of each of the first, second and third legs, the main body section having a patient interface section that sealingly mates with a complementary fluid receiving section of the patient interface member so that gas flowing into and through the housing is directed to the patient interface member; wherein the second compartment is for storing aerosolized medication that is delivered into the housing through the first leg and flows through the third leg to the second compartment and the first compartment stores non-medicated gas; wherein the second leg has a second flow control means associated therewith and a supplemental gas port associated therein for receiving a supplemental gas, the second flow control means being disposed between the main body section and the supplemental gas port so that the supplemental gas can flow into the main body section only when the second flow control means is open; and
when the second flow control means is closed, the supplemental gas flows into the first compartment where it is stored until the second flow control means opens;wherein the second leg has a safety flow control means that is associated therein and is open to atmosphere and opens only when there is insufficient gas flow of both aerosolized medication and supplemental gas.
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9. A device for use in an aerosol inhalation system for delivering aerosolized medication comprising:
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a means for generating aerosolized medication from a single source of gas; a housing that is operatively connected to the means for generating aerosolized medication such that the aerosolized medication is delivered to a main port of the housing, the housing having a supplemental gas port for receiving a flow of supplemental gas; a patient interface member in the form of a face mask that is fluidly coupled to the housing and for placement about a face of the patient and in communication with a mouth of the patient for delivering the aerosolized medication, the face mask having a first inhalation valve that is part of the face mask and is positionable between an open position where aerosolized medication flows into an interior of the patient interface member when the patient inhales and a closed position when the patient exhales, the exhaled gas being vented from the interior of the face mask through at least one vent port that is part of the face mask; a flexible, expandable reservoir having a first compartment that is in fluid communication with the supplemental gas port for receiving and storing the supplemental gas and a second compartment that is always in fluid communication with the main port for receiving and storing the aerosolized medication when the first inhalation valve is in the closed position, the second compartment being fluidly attached to the housing at a location remote from but in fluid communication with the main port, wherein the reservoir comprises a bifurcated bag and the first compartment has a different volume compared to the second compartment, the reservoir being removably attached to the housing; and a safety vent formed as part of the first compartment and open to atmosphere, the safety vent opening to vent the supplemental gas in the first compartment to atmosphere when an excess of supplemental gas is stored in the first compartment, the safety vent comprising a valve that is formed in expandable material that forms the first compartment of the reservoir. - View Dependent Claims (10, 11, 12)
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13. A device for use in an aerosol inhalation system for delivering aerosolized medication comprising:
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a means for generating aerosolized medication from a single source of gas; a housing that is operatively connected to the means for generating aerosolized medication such that the aerosolized medication is delivered to a main port of the housing, the housing having a supplemental gas port for receiving a flow of supplemental gas; a patient interface member in the form of a face mask that is fluidly coupled to the housing and for placement about a face of the patient and in communication with a mouth of the patient for delivering the aerosolized medication, the face mask having a first inhalation valve that is part of the face mask and is attached to and movable relative to a valve seat structure and is positionable between an open position where aerosolized medication flows into an interior of the patient interface member when the patient inhales and a closed position when the patient exhales, the exhaled gas being vented from the interior of the face mask through at least one vent port that is part of the face mask; and a valve safety feature to prevent the first inhalation valve from entering the patient'"'"'s mouth in the event that the first inhalation valve becomes separated from the face mask, the valve safety feature disposed between the first inhalation valve and the patient'"'"'s mouth, the valve safety defining a structure that allows air to flow therethrough regardless of a position of the first inhalation valve, wherein the valve safety feature has a frame with an opening being defined therein, the valve seat structure being integrally attached to the frame of the valve safety feature so as to allow the valve to move within a hollow interior space defined within the frame of the valve safety structure.
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Specification