Sealing nasal cannula
First Claim
1. A ventilation interface comprising:
- a nasal cannula body, the nasal cannula body comprising;
a pair of nasal prongs located on a top portion of the nasal cannula body to create a first sealing interface between the nasal cannula body and a nose; and
a bellows-like structure integrally molded in a portion of the nasal cannula body, wherein the bellows-like structure is configured to contact a bottom surface of the nose to create a second sealing interface between the nasal cannula body and the nose.
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Accused Products
Abstract
An integrally molded ventilation interface includes a hollow bellows-like structure and two nasal prongs extending from a top surface of the bellows. A pair of headgear strap flanges can also be molded integrally with the ventilation interface. The nasal prongs provide a first sealing interface between an outer surface of the nasal prongs and an inner surface of the patient'"'"'s nares. The bellows provides a second sealing interface between a top surface of the bellows-like structure and a bottom surface of a patient'"'"'s nose. The headgear strap flanges provide a third sealing interface between the ventilation interface and a mustache region of the patient'"'"'s face as well as a bottom surface of the patient'"'"'s nose.
239 Citations
22 Claims
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1. A ventilation interface comprising:
a nasal cannula body, the nasal cannula body comprising; a pair of nasal prongs located on a top portion of the nasal cannula body to create a first sealing interface between the nasal cannula body and a nose; and a bellows-like structure integrally molded in a portion of the nasal cannula body, wherein the bellows-like structure is configured to contact a bottom surface of the nose to create a second sealing interface between the nasal cannula body and the nose. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A ventilation interface comprising:
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a nasal cannula body; and a pair of barrel shaped prongs located on a top portion of the nasal cannula body, the barrel shaped prongs having a largest diameter at a midsection of each of the prongs and smaller diameters at first and second ends of each of the prongs and providing a large sealing surface between an outer surface of the prongs and an inner surface of a patient'"'"'s nares, wherein the largest diameter of the barrel shaped prongs is configured to fit substantially entirely within the patient'"'"'s nares such that the largest diameter of the prongs compresses in a radial direction and applies substantially uniform pressure across the outer surface of the prongs and the inner surface of the patient'"'"'s nares. - View Dependent Claims (21, 22)
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Specification