Nasal delivery method
First Claim
1. A method of delivering a substance to the-nasal airway of a subject, comprising the steps of:
- sealing one of the nostrils of a subject to an outlet of a delivery unit such as to prevent the escape of a gas flow through the one nostril;
closing the oropharyngeal velum of the subject; and
delivering a gas flow entraining a substance through the outlet at such a driving pressure as to flow around the posterior margin of the-nasal septum and out of the other nostril of the subject, wherein the gas flow entraining a substance is provided by actuation of a supply unit device.
5 Assignments
0 Petitions
Accused Products
Abstract
A delivery device (20, 22) for and a method of delivering a substance to the nasal airway (1) of a subject, in particular the posterior region of the nasal airway, the delivery device comprising: a closure unit for causing the closure of the oropharyngeal velum of the subject; and a delivery unit for delivering a gas flow entraining a substance to one of the nostrils of the subject at such a driving pressure as to flow around the posterior margin of the nasal septum and out of the other nostril of the subject, wherein the delivery unit comprises a nosepiece (30, 40, 58, 82, 102, 132) which includes an outlet through which the gas flow is in use delivered to the one nostril and a sealing member for sealing the one nostril to the outlet such as in use to prevent the escape of the gas flow through the one nostril.
103 Citations
50 Claims
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1. A method of delivering a substance to the-nasal airway of a subject, comprising the steps of:
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sealing one of the nostrils of a subject to an outlet of a delivery unit such as to prevent the escape of a gas flow through the one nostril; closing the oropharyngeal velum of the subject; and delivering a gas flow entraining a substance through the outlet at such a driving pressure as to flow around the posterior margin of the-nasal septum and out of the other nostril of the subject, wherein the gas flow entraining a substance is provided by actuation of a supply unit device. - View Dependent Claims (2, 3, 4, 19, 20, 21, 22, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50)
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5. A method of delivering a substance to the nasal airway of a subject, comprising the steps of:
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sealing one of the nostrils of a subject to an outlet of a delivery unit such as to prevent the escape of a gas flow through the one nostril; closing the oropharyngeal velum of the subject; and delivering a gas flow entraining a substance through the outlet at such a driving pressure as to flow around the posterior margin of the-nasal septum and out of the other nostril of the subject, wherein the gas flow entraining a substance is provided by an impeller driven by an exhalation flow of the subject.
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6. A method of delivering a substance to the nasal airway of a subject, comprising the steps of:
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sealing one of the nostrils of a subject to an outlet of a delivery unit such as to prevent the escape of a gas flow through the one nostril; closing the oropharyngeal velum of the subject; delivering a gas flow entraining a substance through the outlet at such a driving pressure as to flow around the posterior margin of the-nasal septum and out of the other nostril of the subject; and providing a flow resistance to the gas flow exiting the other nostril of the subject such as to maintain a dynamic positive pressure in the nasal airway of the subject, wherein the gas flow, while under resistance, continues exiting the other nostril. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13)
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14. A method of delivering a substance to the nasal airway of a subject, comprising the steps of:
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sealing one of the nostrils of a subject to an outlet of a delivery unit such as to prevent the escape of a gas flow through the one nostril; closing the oropharyngeal velum of the subject; and delivering a gas flow entraining a substance through the outlet at such a driving pressure as to flow around the posterior margin of the-nasal septum and out of the other nostril of the subject, wherein the gas flow entraining a substance is delivered at a rate of at least 20 liters per minute and provided by actuation of a supply unit device. - View Dependent Claims (17, 18)
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15. A method of delivering a substance to the nasal airway of a subject, comprising the steps of:
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sealing one of the nostrils of a subject to an outlet of a delivery unit such as to prevent the escape of a gas flow through the one nostril; closing the oropharyngeal velum of the subject; and delivering a gas flow entraining a substance through the outlet at such a driving pressure as to flow around the posterior margin of the-nasal septum and out of the other nostril of the subject, wherein the gas flow entraining a substance is delivered at a rate of about 1 to 20 liters per minute and provided by actuation of a supply unit device. - View Dependent Claims (16)
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23. A method of delivering a substance to the nasal airway of a subject, comprising the steps of:
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sealing one of the nostrils of a subject to an outlet of a delivery unit such as to prevent the escape of a gas flow through the one nostril; closing the oropharyngeal velum of the subject; and delivering a gas flow entraining a substance through the outlet at such a driving pressure as to flow around the posterior margin of the-nasal septum and out of the other nostril of the subject, wherein a metered dose of the substance is mechanically dispensed into a delivery chamber and wherein the gas flow entraining a substance is provided by actuation of a supply unit device. - View Dependent Claims (24)
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Specification