APPARATUS FOR COLLECTION OF AIRWAY GASES
First Claim
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1. An apparatus for collecting airway gases, comprising:
- a mouthpiece through which a user in use exhales to deliver a gas flow therethrough, wherein the mouthpiece is configured to provide a resistance to exhalation which is such as to cause closure of the oropharyngeal velum of the user on exhalation therethrough;
a first nosepiece which is fluidly connected to the mouthpiece for fitting to one nostril of the user;
a second nosepiece for fitting to the other nostril of the user; and
a collection device which is fluidly connected to the second nosepiece for collecting airway gases as delivered from the second nosepiece.
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Abstract
The invention relates to an apparatus for collection of airway gases from a subject comprising a first means for producing closure of the velum of the subject, and a second means for collection of the airway gases, wherein the first and second means need not be integral with each other.
110 Citations
32 Claims
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1. An apparatus for collecting airway gases, comprising:
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a mouthpiece through which a user in use exhales to deliver a gas flow therethrough, wherein the mouthpiece is configured to provide a resistance to exhalation which is such as to cause closure of the oropharyngeal velum of the user on exhalation therethrough; a first nosepiece which is fluidly connected to the mouthpiece for fitting to one nostril of the user; a second nosepiece for fitting to the other nostril of the user; and a collection device which is fluidly connected to the second nosepiece for collecting airway gases as delivered from the second nosepiece. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An apparatus for collecting airway gases, comprising:
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a mouthpiece into which a user in use exhales, wherein the mouthpiece is configured to provide a resistance to exhalation which is such as to cause closure of the oropharyngeal velum of the user on exhalation thereinto; a nosepiece for fitting to one nostril of a nasal airway of the user; a gas flow generator for providing a gas flow through the nasal airway of the user from the other nostril to the one nostril of the user while the oropharyngeal velum of the user is closed; and a collection device which is fluidly connected to the nosepiece for collecting airway gases as delivered therefrom. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification