Nasal devices
First Claim
Patent Images
1. A nasal delivery device for delivering a substance to a nasal cavity of a subject, including:
- a nosepiece for insertion into a single nostril of a subject;
a substance supply unit operable to supply a substance for delivery through the nosepiece; and
a delivery prevention mechanism operable by insertion of a nosepiece into the nostril of the subject and being configured to prevent operation of the substance supply unit until the nosepiece achieves a sealing fit with the nostril of the subject.
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Accused Products
Abstract
A nasal delivery device for and a method of delivering a substance to a nasal cavity of a subject, the delivery device including: a nosepiece for fitting to a nostril of a subject; a substance supply unit for supplying a substance for delivery through the nosepiece; and a delivery prevention mechanism for preventing delivery of a substance through the nosepiece until the nosepiece is properly fitted to the nostril of the subject.
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Citations
40 Claims
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1. A nasal delivery device for delivering a substance to a nasal cavity of a subject, including:
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a nosepiece for insertion into a single nostril of a subject; a substance supply unit operable to supply a substance for delivery through the nosepiece; and a delivery prevention mechanism operable by insertion of a nosepiece into the nostril of the subject and being configured to prevent operation of the substance supply unit until the nosepiece achieves a sealing fit with the nostril of the subject. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A nasal delivery device for delivering a substance to a nasal cavity of a subject, including:
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a nosepiece for insertion into a nostril of a subject; a substance supply unit operable to supply a substance for delivery through the noseplece; a flow path fluidly connected to the nosepiece through which a gas flow is delivered to the nosepiece; and a delivery prevention mechanism operable by insertion of the nosepiece into the nostril of the subject and being configured to prevent operation of the substance supply unit until the nosepiece achieves a sealing fit with the nostril of the subject, wherein the delivery prevention mechanism comprises first and second members movable relative to one another between first and second configurations, one of the members defining at least a part of the flow path and defining at least in part a vent which is openable to vent the gas flow from the flow path and thereby prevent the delivery of the gas flow to the nosepiece until the nosepiece achieves a sealing fit with the nostril of the subject, and the other member being configured such that the vent is open in one of the first and second configurations and closed in the other of the first and second configurations. - View Dependent Claims (34, 35)
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36. A nasal delivery device for delivering a substance to a nasal cavity of a subject, including:
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a nosepiece for insertion into a nostril of a subject; a substance supply unit operable to supply a substance for delivery through the nosepiece; a flow path fluidly connected to the nosepiece through which a gas flow is delivered to the nosepiece; and a delivery prevention mechanism operable by insertion of the nosepiece into the nostril of the subject and being configured to prevent operation of the substance supply unit until the nosepiece achieves a sealing fit with the nostril of the subject, wherein the delivery prevention mechanism is provided by the nosepiece which includes at least one aperture in the outer surface thereof, the at least one aperture being fluidly connected to the flow path and configured such as to be closed by the nostril when the nosepiece is properly inserted in the nostril of the subject, the substance supply unit being inoperable when the at least one aperture is open to atmosphere and operable when the at least one aperture is closed by the nostril of the subject. - View Dependent Claims (37)
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38. A nasal delivery device for delivering a substance to a nasal cavity of a subject, including:
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a nosepiece for fitting to a single nostril of a subject through which a gas flow from an exhalation breath or a gas supply unit is in use delivered; and a substance supply unit for supplying a substance to the nosepiece for delivery to the nasal cavity of the subject, the substance supply unit including a trigger mechanism for actuating the substance supply unit on detection of the gas flow achieving or exceeding both a predetermined pressure and a predetermined flow rate.
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39. A nasal delivery device for delivering a substance to a nasal cavity of a subject, including:
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a mouthpiece through which the subject in use exhales to cause closure of the oropharyngeal velum of the subiect; a nosepiece for insertion into a nostril of a subject; and a flow path fluidly connected to the nosepiece; wherein the nosepiece is expandable and configured such as to expand on generation of a pressure in the flow path, thereby sealing with the nostril of the subject and providing for expansion of the nasal cavity of the subject, wherein the flow path fluidly connects the nosepiece and the mouthpiece, whereby exhaled air from an exhalation breath is delivered through the flow path.
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40. A nasal delivery device for delivering a substance to a nasal cavity of a subject, including:
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a nosepiece for insertion into a single nostril of a subject; a substance supply unit operable to supply a substance for delivery through the nosepiece; and a delivery prevention mechanism operable by insertion of the nosepiece into the single nostril of the subject and being configured to prevent operation of the substance supply unit until the nosepiece achieves a sealing fit with the single nostril of the subject.
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Specification