Cushion for a respiratory mask assembly
First Claim
1. A cushion for a respiratory mask assembly that delivers breathable gas in a range of operating pressures to a patient, the cushion comprising:
- a non-face contacting portion adapted to contact a frame;
a face-contacting or interacting portion adapted to form a contact seal with the patient'"'"'s face in use and including a first footprint area on the patient'"'"'s face; and
a central portion that interconnects the non-face contacting portion and the face-contacting portion,the central portion being structured to automatically adjust a component of force applied to the patient'"'"'s face through the face-contacting portion in accordance with operating pressure, while maintaining the contact seal throughout the range of operating pressures,the central cushion portion comprising a gusset portion and a ring-shaped reinforcement portion provided between the gusset portion and the face-contacting cushion portion,wherein the gusset portion includes a second footprint area on the patient'"'"'s face, andwherein an inner edge of the second footprint area is located substantially adjacent an outer edge of the first footprint area, and an outer edge of the second footprint area is located radially inwardly of a line of contact between the non face-contacting cushion portion and the frame.
3 Assignments
0 Petitions
Accused Products
Abstract
A respiratory mask assembly for delivering breathable gas to a patient includes a frame and a cushion. The cushion has a non-face contacting portion structured to be connected to the frame, a face-contacting portion structured to engage the patient'"'"'s face, and a central portion that interconnects the non-face contacting portion and the face contacting portion. The frame may be structured to allow a forehead support to assume multiple positions, to compensate for replacement cushions that may have a different profile, shape or size. The cushion is structured to compensate for variations in strap tension, treatment pressure and/or movement of the patient. Headgear may be provided with a strap assembly in which one or more straps is provided with selectively adjustable elasticity or extensibility that may be automatically changed in dependence of treatment pressure and/or treatment type.
136 Citations
54 Claims
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1. A cushion for a respiratory mask assembly that delivers breathable gas in a range of operating pressures to a patient, the cushion comprising:
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a non-face contacting portion adapted to contact a frame; a face-contacting or interacting portion adapted to form a contact seal with the patient'"'"'s face in use and including a first footprint area on the patient'"'"'s face; and a central portion that interconnects the non-face contacting portion and the face-contacting portion, the central portion being structured to automatically adjust a component of force applied to the patient'"'"'s face through the face-contacting portion in accordance with operating pressure, while maintaining the contact seal throughout the range of operating pressures, the central cushion portion comprising a gusset portion and a ring-shaped reinforcement portion provided between the gusset portion and the face-contacting cushion portion, wherein the gusset portion includes a second footprint area on the patient'"'"'s face, and wherein an inner edge of the second footprint area is located substantially adjacent an outer edge of the first footprint area, and an outer edge of the second footprint area is located radially inwardly of a line of contact between the non face-contacting cushion portion and the frame. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. A cushion for a respiratory mask assembly, comprising:
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a face-contacting cushion portion adapted to form a contact seal with a region of the patient'"'"'s face in use and defining a first footprint area therewith; a non face-contacting cushion portion adapted to connect to a frame in use; and a central cushion portion that interconnects the non face-contacting cushion portion and the face-contacting cushion portion, the central cushion portion being structured to allow the face-contacting cushion portion to travel through a travel range away from and towards the frame, the central cushion portion comprising a gusset portion located in use adjacent the non face-contacting cushion portion and a ring-shaped reinforcement portion located in use adjacent the face-contacting cushion portion, wherein the gusset portion defines a second footprint area on the face, and wherein an inner edge of the second footprint area is located adjacent an outer edge of the first footprint area, and an outer edge of the second footprint area is located radially inwardly of a line of connection between the non face-contacting cushion portion and the frame. - View Dependent Claims (39, 40, 41)
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42. A cushion for a respiratory mask assembly, comprising:
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a face-contacting cushion portion adapted to form a contact seal with a region of the patient'"'"'s face in use and including a first footprint area on the patient'"'"'s face; a non face-contacting cushion portion adapted to contact a frame in use; and a central cushion portion that interconnects the non face-contacting cushion portion and the face-contacting cushion portion, the central cushion portion being structured to allow the face-contacting cushion portion to travel through a travel range away from and towards the frame in use, the central cushion portion comprising a gusset portion and a ring-shaped reinforcement portion provided between the gusset portion and the face-contacting cushion portion, wherein the gusset portion includes a second footprint area on the patient'"'"'s face, and wherein an inner edge of the second footprint area is located adjacent an outer edge of the first footprint area, and an outer edge of the second footprint area is located radially inwardly of a line of contact between the non face-contacting cushion portion and the frame. - View Dependent Claims (43, 44, 45, 46, 47, 48, 49)
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50. A cushion for a respiratory mask assembly, comprising:
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a face-contacting portion adapted to contact a patient'"'"'s face in use; a non face-contacting portion adapted to connect to a frame; and a gusset portion that interconnects the non face-contacting portion and the face-contacting portion, the gusset portion projecting radially outwardly from the face-contacting portion, wherein the non-face contacting portion is adapted to connect to the frame radially outwardly of the gusset portion. - View Dependent Claims (51, 52, 53, 54)
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Specification