Patent ID: 7285133

Claim:
Artificial larynx prosthesis, (C), that can be implanted on the stump of a trachea, comprising: a first, substantially ring-shaped element, (A), said ring-shaped element comprises a substantially circular internal lumen having a lower edge ( 1 ), that lies essentially on a flat base, (D), and an upper edge ( 2 ) which is of variable height with respect to said flat base (D), in such a way that two areas, one forward area of minimum height and one back area of maximum height are formed opposite each other and joined together in a gradual incline, wherein said flat base is perpendicular to a longitudinal axis of the first, substantially ring-shaped element, and the first, substantially ring-shaped element (A) further comprises a symmetry plane (E), which is perpendicular to said flat base (D); a second pyramid-shaped element, (B), comprising a triangular base and first, second, third and fourth apices ( 3 , 4 , 3 ′, 4 ′), wherein said third and fourth apices ( 3 ′, 4 ′) form a first ridge, said second pyramid-shaped element is positioned along said first ridge on the back area of the first, substantially ring-shaped element, (A), wherein said first, substantially ring-shaped element and said second pyramid-shaped element form a single unit, the first and second apices ( 3 , 4 ) of said second pyramid-shaped element (B) being directed towards the inside of the first, substantially ring-shaped element (A), with said first apex ( 3 ) facing the median axis and forward of the first, substantially ring-shaped element (A).