Nasal interface device
First Claim
Patent Images
1. A nasal interface device comprising:
- a breathing gas inlet tube;
a nasal prong assembly having first and second nasal prongs in fluid communication with the breathing gas inlet tube;
first and second expiratory tubes extending outwardly from the nasal prong assembly and in fluid communication with the first and second nasal prongs, wherein the first and second expiratory tubes are coupled to each other at an expiratory tube discharge portion, the expiratory tube discharge portion being defined by a side wall and having at least one opening in the side wall; and
an expiratory gas regulating member operatively disposed over the side wall of the expiratory tube discharge portion and the at least one opening such that the expiratory gas regulating member is operable between a first position in which the at least one opening is at least partially covered by the expiratory gas regulating member and a second position in which the at least one opening is uncovered and open to atmosphere,wherein the expiratory gas regulating member comprises a titrating sleeve rotatable relative to the expiratory tube discharge portion at the at least one opening.
0 Assignments
0 Petitions
Accused Products
Abstract
A nasal interface device delivers a high flow rate of a gas having a pressure that is adjustable to a patient. The device includes a nasal insert that is adapted to deliver pressurized breathing gas to a nasal cavity of the patient, and to receive expired air. The nasal insert has a pressurized breathing gas delivery port and an expired gas port. The expired gas port has a plurality of openings extending therethrough.
33 Citations
6 Claims
-
1. A nasal interface device comprising:
-
a breathing gas inlet tube; a nasal prong assembly having first and second nasal prongs in fluid communication with the breathing gas inlet tube; first and second expiratory tubes extending outwardly from the nasal prong assembly and in fluid communication with the first and second nasal prongs, wherein the first and second expiratory tubes are coupled to each other at an expiratory tube discharge portion, the expiratory tube discharge portion being defined by a side wall and having at least one opening in the side wall; and an expiratory gas regulating member operatively disposed over the side wall of the expiratory tube discharge portion and the at least one opening such that the expiratory gas regulating member is operable between a first position in which the at least one opening is at least partially covered by the expiratory gas regulating member and a second position in which the at least one opening is uncovered and open to atmosphere, wherein the expiratory gas regulating member comprises a titrating sleeve rotatable relative to the expiratory tube discharge portion at the at least one opening. - View Dependent Claims (2, 3, 4, 5, 6)
-
Specification