| 摘要 |
The invention relates to a speaking valve (1) for laryngectomized or tracheotomized persons, comprising a cover part (2), a housing part (4), and a filter (8) arranged in the housing part. The cover part comprises a closure part (3) which is arranged on an inner face of the cover part and which faces the filter. The cover part consists of an elastic material, and the closure part closes the speaking valve distally to the filter by deforming at least one region of the cover part. The closure part has a circular shape and has a central part surface which rises starting from a lower end surface of an outer edge to a centrally arranged securing region. |
