Breathing assistance apparatus
First Claim
1. A breathing assistance apparatus comprising:
- a pressurised source of gases, humidification means adapted to, in use, be in fluid communication with said source of gases and adapted to in use humidify said gases, humidified gases transport means adapted to, in use, be in fluid communication with said humidification means and adapted to in use convey said humidified gases, heating means disposed within said tansport means and adapted to in use heat said gases as they pass through said transport means, and nasal cannula, that are adapted to deliver said humidified gases to said patient, said nasal cannula including at least one wide bore conduit that allows high flow delivery of said humidified gases and creates positive airway pressure in said patient'"'"'s airway, said nasal cannula adapted to, in use, be in fluid communication with said transport means.
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Accused Products
Abstract
The present invention relates to the delivery of high flow humidified pressurised oxygen and/or air to a patient by way of a wide bore nasal cannula (30). The cannula of the present invention comprises wide bore cannula to minimise the flow resistance and the entry velocity. The nasal cannula includes two nasal prongs (40, 41) fittable into a patient'"'"'s nostrils. The prongs follow the inner shape of the patient'"'"'s nostrils such that a more efficient flow of gases into the patient'"'"'s lungs is achieved as gases flow are directed down the main nasal passage more accurately. The cannula do not seal within the nasal cavities of the patient, and in some embodiments the cannula may be provided with a pressure relief valve to allow gases to be exhausted from the cannula.
106 Citations
11 Claims
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1. A breathing assistance apparatus comprising:
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a pressurised source of gases, humidification means adapted to, in use, be in fluid communication with said source of gases and adapted to in use humidify said gases, humidified gases transport means adapted to, in use, be in fluid communication with said humidification means and adapted to in use convey said humidified gases, heating means disposed within said tansport means and adapted to in use heat said gases as they pass through said transport means, and nasal cannula, that are adapted to deliver said humidified gases to said patient, said nasal cannula including at least one wide bore conduit that allows high flow delivery of said humidified gases and creates positive airway pressure in said patient'"'"'s airway, said nasal cannula adapted to, in use, be in fluid communication with said transport means. - View Dependent Claims (2, 3, 4, 5, 7, 8, 9, 10)
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6. A breathing assistance apparatus according to any one of claims I to 5 wherein one of said humidification means, said humidified gases transport means and said nasal cannula includes a pressure relief valve to ensure gases pressure can be released upon improper fitting of said prongs or sealing of said prongs within said patient'"'"'s nares.
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11. A breathing assistance apparatus as herein described with reference to any one of the accompanying drawings.
Specification