Respiratory mask with adjustable exhaust vent
First Claim
1. In a nasal mask for applying a positive air pressure to the airway of a patient, said mask having a body, a facial seal adapted to seal to a patient'"'"'s face around the patient'"'"'s nose, and a pressurized air inlet port, an improvement comprising an exhaust port member mounted on said mask body to rotate relative to said mask body about an axis of rotation, said exhaust port member having at least one exhaust air port for venting air from said mask during use by a patient, and wherein said at least one exhaust air port is arranged to direct vented air at an angle relative to said axis of rotation.
6 Assignments
0 Petitions
Accused Products
Abstract
A nasal mask for use in respiratory therapy is provided with one or more vent ports which are adjustable for directing vented air in a direction which is most comfortable to the patient. By providing adjustable vent ports, the patient can adjust the direction of the vented air to a position that best accommodates the patient. Each vent port can be in the form of a passage in a member which is mounted to rotate in an opening through the mask. The member may be rotated in the opening to change the direction of air flowing through the passage or passages. The member may be designed to rotate about a fixed axis relative to the mask, or it may be spherical and designed to rotate in any direction. Preferably, a knob or tab is provided for grasping to facilitate manually adjusting the vent port orientation.
242 Citations
18 Claims
- 1. In a nasal mask for applying a positive air pressure to the airway of a patient, said mask having a body, a facial seal adapted to seal to a patient'"'"'s face around the patient'"'"'s nose, and a pressurized air inlet port, an improvement comprising an exhaust port member mounted on said mask body to rotate relative to said mask body about an axis of rotation, said exhaust port member having at least one exhaust air port for venting air from said mask during use by a patient, and wherein said at least one exhaust air port is arranged to direct vented air at an angle relative to said axis of rotation.
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8. A nasal mask for applying a positive air pressure to the airway of a patient, said mask comprising:
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a body including a pressurized air inlet port;
a facial seal supported by said mask body and adapted to seal to a patient'"'"'s face around the patient'"'"'s nose; and
an exhaust port member mounted on said mask body to rotate relative to said mask body about an axis of rotation, said exhaust port member having at least one exhaust air port for venting air from said mask during use by a patient, and wherein said at least one exhaust air port is arranged to direct vented air at an angle relative to said axis of rotation. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A nasal mask for applying a positive air pressure to the airway of a patient, said mask comprising:
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a body including a pressurized air inlet port and a circular opening in said mask body;
a resilient facial seal supported by said mask body, said seal being shaped and sufficiently flexible to seal against a patient'"'"'s face around the patient'"'"'s nose; and
an exhaust port member having a circular perimeter with a recessed annular groove formed in said perimeter, said exhaust port member being inserted in said opening in said mask body so that said mask body extends into said annular groove, said groove and said opening being sized to ensure a proper seal between said mask body and said exhaust port member and to provide sufficient friction to minimize unintentional rotation of said exhaust port member while permitting said exhaust port member to be manually rotated about an axis of rotation, said exhaust port member having a plurality of exhaust air ports at a predetermined angle relative to the axis of rotation for venting air from said mask during use by a patient. - View Dependent Claims (16, 17, 18)
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Specification