Nasal ventilation interface
First Claim
1. A ventilation interface to be inserted into a nasal passage of a user to secure the interface, comprising:
- a cannula connectable to a source of ventilation gas at a positive pressure;
at least one flexible nasal insert adapted to be inserted into the nasal passage, the at least one nasal insert forming a portion of a first gas flow passage from the cannula to a distal end of the at least one nasal insert for supplying the ventilation gas to the user; and
at least one non-tapered seal portion provided adjacent to the distal end of the at least one nasal insert, wherein the at least one nasal insert is flexible such that the at least one non-tapered seal portion is adapted to engage an interior portion the nasal passage of the user.
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Accused Products
Abstract
A nasal ventilation interface comprising a hollow body having at least one and preferably two nasal apertures, and at least one and preferably two inhale apertures, and at least one and preferably two nasal insert tubes each associated with one of the nasal apertures and having an annular sleeve that forms a seal with a nostril of the patient. The hollow body has at least one and preferably two exhale apertures and at least one valve assembly associated with the exhale apertures that are capable of preventing air from passing through the exhale aperture upon the patient inhaling and allowing air to pass through the exhale aperture upon exhaling. The hollow body may also have at least one and preferably two filters for retaining heat and moisture from the exhale air and transferring the retained heat and moisture into the inhale air.
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Citations
25 Claims
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1. A ventilation interface to be inserted into a nasal passage of a user to secure the interface, comprising:
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a cannula connectable to a source of ventilation gas at a positive pressure;
at least one flexible nasal insert adapted to be inserted into the nasal passage, the at least one nasal insert forming a portion of a first gas flow passage from the cannula to a distal end of the at least one nasal insert for supplying the ventilation gas to the user; and
at least one non-tapered seal portion provided adjacent to the distal end of the at least one nasal insert, wherein the at least one nasal insert is flexible such that the at least one non-tapered seal portion is adapted to engage an interior portion the nasal passage of the user. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A ventilation interface to be inserted into a nasal passage of a user to secure the interface, comprising:
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a cannula connectable to a source of ventilation gas at a positive pressure;
a nasal insert means for forming a gas flow passage for the ventilation gas from the cannula to the nasal passage of the user, the nasal insert means adapted to be inserted into the nasal passage; and
a non-tapered sealing means adapted for engaging an interior portion the nasal passage of the user by expanding. - View Dependent Claims (24)
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25. A ventilation interface to be inserted into a nasal passage of a user to secure the interface, comprising:
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a cannula connectable to a source of ventilation gas at a positive pressure;
at least one flexible nasal insert adapted to be inserted into the nasal passage, the at least one nasal insert forming a portion of a first gas flow passage from the cannula to a distal end of the at least one nasal insert for supplying the ventilation gas to the user;
at least one bead-shaped seal portion provided adjacent to the distal end of the at least one nasal insert, wherein the at least one nasal insert is flexible such that the at least one seal portion is adapted to engage an interior portion the nasal passage of the user.
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Specification