| 摘要 |
<p>The bead has a contact area, a nose bridge area (1) including width, side areas (2), a base area (3) and a bearing area (4) placed on a patient. The bearing area extends from the side areas and the base and nose bridge areas to a central opening (6), and is designed as a sealing lip, which frames the central opening that serves for introduction of a nose of the patient, where the bead includes a ratio of the width of the nose bridge area to maximum width of the bead being one to three or greater, and wall thickness in the nose bridge area is less than or equal to 0.6 mm.</p> |
