Thyroplasty implant

A thyroplasty implant for anchoring in a window cut through a thyroid lamina and causing medial displacement of a vocal cord comprising

• a base for anchoring in said window, said base having a bottom tier, a middle tier, and an upper tier having respective lengths and widths that are aligned, and
• a projecting member extending from said base for causing medial displacement of a vocal cord, said projecting member having a length and width at a portion adjacent said base that are aligned with said lengths and widths of said bottom tier, middle tier, and upper tier,
• said projecting member having two generally parallel side surfaces that extend inward from two sides of said window and each generally have the shape of a triangle,
• said triangle of each of said side surfaces having a first, base side that extends along said base of the implant, a second, rear side that makes an oblique angle with the base side and extends beyond is offset with respect to the base, and a third, inner side that makes acute angles with the base side and the rear side,
• said projecting member having an innermost surface between the inner sides of said triangles of the two side surfaces that is arcuate at junctions of said innermost surface with the side surfaces and with a rear surface between the rear sides of said triangles,
• said base and said projecting member being made of biocompatible material.