| 摘要 |
The invention relates to a speaking valve for laryngectomized and tracheotomized persons that is easy and economical to produce. According to the invention, the speaking valve (10) comprises a proximal first opening (14) and a distal second opening (16), a filter (38), which is at least partially surrounded by the housing (12), which filter (38) is made of an elastic material, and has a proximal first end (40) and a distal second end (42), wherein the filter partially protrudes beyond an end face of the housing at the distal second opening, and wherein a cover (46) is connected by means of at least one partial region of the bottom surface (47) thereof to a top side of the filter at the distal second end of the filter. A diameter d1 of the cover is greater than a diameter d2 of the filter, such that an edge (48) projecting beyond a lateral filter wall (13) of the filter is formed, wherein by application of pressure to the cover from an initial position, a bottom surface of the edge at least partially interacts with the end face of the housing in order to produce a closed position of the speaking valve, and wherein the cover together with the filter returns to the initial position when unloaded. |
