Cushion for a respiratory mask assembly
First Claim
1. A cushion for a respiratory mask assembly that delivers breathable gas to a patient, the cushion comprising:
- a non-face contacting portion structured to be connected to a frame;
a face-contacting portion structured to engage the patient'"'"'s face; and
an intermediate portion that interconnects the non-face contacting portion and the face-contacting portion,the intermediate portion including a gusset portion structured to apply a first component of force to the patient'"'"'s face through the face-contacting portion, the intermediate portion extending radially outwardly a distance away from the non-face-contacting and face-contacting portions to provide additional footprint area outside a contact line of the cushion; and
a spring structure coupled with the face-contacting portion, the spring structure being configured to apply a second component of force to the patient'"'"'s face through the face-contacting portion,wherein the first and second components of force to be applied by the gusset portion and spring structure, respectively, determine a contact force to be applied to the patient'"'"'s face through the face-contacting portion.
3 Assignments
0 Petitions
Accused Products
Abstract
A respiratory mark 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 an intermediate portion that interconnects the non-face contacting portion and the face-contacting portion. The intermediate portion includes a gusset portion that applies a first component of force to the patient'"'"'s face through the face-contacting portion. A spring structure is coupled with the face-contacting portion of the cushion. The spring structure applies a second component of force to the patient'"'"'s face through the face-contacting portion. The first and second components of force applied by the gusset portion and spring structure, respectively, determine a contact force of the cushion applied to the patient'"'"'s face through the face-contacting portion. The intermediate portion may also include an elastic cuff portion. Further, in the case of an oral mask, the sealing section may include a portion that is designed to promote a better seal in the chin region of the mask.
276 Citations
36 Claims
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1. A cushion for a respiratory mask assembly that delivers breathable gas to a patient, the cushion comprising:
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a non-face contacting portion structured to be connected to a frame; a face-contacting portion structured to engage the patient'"'"'s face; and an intermediate portion that interconnects the non-face contacting portion and the face-contacting portion, the intermediate portion including a gusset portion structured to apply a first component of force to the patient'"'"'s face through the face-contacting portion, the intermediate portion extending radially outwardly a distance away from the non-face-contacting and face-contacting portions to provide additional footprint area outside a contact line of the cushion; and a spring structure coupled with the face-contacting portion, the spring structure being configured to apply a second component of force to the patient'"'"'s face through the face-contacting portion, wherein the first and second components of force to be applied by the gusset portion and spring structure, respectively, determine a contact force to be applied to the patient'"'"'s face through the face-contacting portion. - 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, 32, 33, 34, 35, 36)
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30. A cushion for a respiratory mask assembly that delivers breathable gas to a patient, the cushion comprising:
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a spring structure configured to provide a contact force for sealing at relatively low mask pressures; and a portion configured to enhance the contact force for sealing at relatively high mask pressures, the portion including a gusset portion that extends radially outwardly a distance away from non-face-contacting and face-contacting portions of the cushion to provide additional footprint area outside a contact line of the cushion, wherein the contact force provided by the gusset portion is proportional to mask pressure. - View Dependent Claims (31)
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Specification