Patent ID: 8550081

Claim:
A series of full-face cushions for patient interfaces that deliver breathable gas to patients, each of the full-face cushions including a nasal bridge region, cheek regions and a chin region, each of the full-face cushions defining, at least in part, a breathing cavity, the series comprising: a first full-face cushion, the first full-face cushion comprising a first membrane including a first nasal bridge region, first cheek regions and a first chin region forming a first sealing structure to form a seal on a nasal bridge region, cheek regions, and a chin region of the patient's face, the first membrane having an inner edge that defines a first aperture to receive the patient's nose and mouth, the first aperture including a lower portion having a first mouth width; a second full-face cushion, the second full-face cushion comprising a second membrane including a second nasal bridge region, second cheek regions and a second chin region forming a second sealing structure to form a seal on a nasal bridge region, cheek regions, and a chin region of the patient's face, the second membrane having an inner edge that defines a second aperture to receive the patient's nose and mouth, the second aperture including a lower portion having a second mouth width; a third full-face cushion, the third full-face cushion comprising a third membrane including a third nasal bridge region, third cheek regions and a third chin region forming a third sealing structure to form a seal on a nasal bridge region, cheek regions, and a chin region of the patient's face, the third membrane having an inner edge that defines a third aperture to receive the patient's nose and mouth, the third aperture including a lower portion having a third mouth width; and a fourth full-face cushion, the fourth full-face cushion comprising a fourth membrane including a fourth nasal bridge region, fourth cheek regions and a fourth chin region forming a fourth sealing structure to form a seal on a nasal bridge region, cheek regions, and a chin region of the patient's face, the fourth membrane having an inner edge that defines a fourth aperture to receive the patient's nose and mouth, the fourth aperture including a lower portion having a fourth mouth width, wherein, in a front view, each of the first, second, third and fourth apertures has a different height, and the first, second, third and fourth mouth widths are constant the same.