A device for bone fixation with at least one through hole (5) for receiving bone fixation means, wherein A) the through hole (5) comprises a first through aperture (8) and a second through aperture (9) for insertion of bone fixation means, whereby said second through aperture (9) is smaller in size than the first through aperture (8)B) the region between the two through aperture (89) is configured as a resilient element (7), which may be pressed outwardly in the direction of the second through aperture (9) when seen from the inside of the first through aperture (8), by means of which the first through aperture (8) is enlargeable in size and the second through aperture (9) is reducible in sizeC) the periphery of the first through aperture (8) comprises at least two circular arcs B1 and B2 with the respective radii R1 and R2 and with the respective centres Z1 and Z2 located at a distance X≧0 extending transversely to the resilient element (7) whereby the ratio R1:R2 is in the range between 0.5 and 2.0.一種用於將骨以至少一用於容納骨固定機構的通孔(5)固定的裝置,其中(A)該通孔(5)包含用於容許骨固定機構嵌入之一第一穿通孔隙(8)和一第二穿通孔隙(9),因此,該第二穿通孔隙(9)的尺寸是小於第一穿通孔隙(8)的尺寸;(B)介於該二穿通孔隙(8;9)之間的區域被構形成為一彈性元件(7),當從該第一穿通孔隙(8)的內側看過去,該彈性元件(7)被往外壓向第二穿通孔隙(9)的方向,藉由該彈性元件(7),該第一穿通孔隙(8)的尺寸被加大,且第二穿通孔隙(9)的尺寸被減小;(C)第一穿通孔隙(8)的圓周包含至少二圓弧B1和B2,該二圓弧部位B1和B2分別具有半徑R1、R2和中心Z1、Z2,該等中心Z1、Z2被安置成橫越該彈性元件(7)延伸之相距一距離X≧0,而R1與R2的比例是在0.5至2.0之間的範圍內。1...骨髓內釘2...縱軸3...釘末端4...釘尖端5...通孔7...彈性元件8...第一穿通孔隙9...第二穿通孔隙13...徑向凸出部15...對稱軸B1...圓弧部位/圓弧長度B2...圓弧部位/圓弧長度
