Ergonomic and adjustable respiratory mask assembly with cushion
AssigneeResMed Pty Ltd
InventorsAnthony Michael GING, Philip Rodney KWOK, Rachael Elizabeth MOORE, Saad NASR, Andrew Martin PRICE
Life of this patent
Estimating the term…
Abstract
A patient interface has a frame with an opening to receive pressurized gas; a cushion permanently co-molded to frame and defining a breathing chamber; an elbow assembly releasably snap-fittable to the frame with an audible click signaling secure attachment between the elbow assembly and the frame, the elbow assembly including a rotatable swivel elbow; headgear to support the patient interface on the patient's head; and a plurality of gas washout holes to allow escape of CO2 from the breathing chamber.
Claims20
A respiratory mask assembly for delivering breathable gas to a patient, comprising:
- a frame having a front surface and a rear surface adapted in use to face the patient;
- and
- a cushion having a side wall removably attachable to the frame, the cushion having a rim extending away from the side wall, and a membrane provided to substantially surround the rim,
- wherein an inner edge of the membrane defines an aperture, the aperture having a generally trapezoidal shape.
A cushion for a respiratory mask assembly that delivers breathable gas to a patient, the cushion comprising:
- a side wall structured to be removably attached to a frame;
- a rim extending away from the side wall;
- and
- a membrane provided to substantially surround the rim,
- wherein an inner edge of the membrane defines an aperture, the aperture having a generally trapezoidal shape.
A cushion for a respiratory mask assembly that delivers breathable gas to a patient, the cushion comprising:
- a side wall structured to be attached to a frame;
- and
- a membrane extending away from the side wall,
- wherein the membrane is structured to engage a patient's face such that forces applied to the patient's face are substantially evenly distributed around the entire perimeter of the cushion.
Dependencies are inferred from the claim text.