A device (1) for placing a receiving part (7) of a bone anchoring device onto a head (91) of a bone anchoring element (9), comprises: a holding device (2), a collet (3) having a longitudinal axis (Z) and being held by the holding device (2), wherein the collet (3) includes a distal end portion (31) configured to be flexibly expanded (E) and/or compressed (C) in a radial direction (R) perpendicular to the longitudinal axis (Z), wherein an engagement feature (34) is provided at an outer contour of the distal end portion (31) of the collet (3) configured to engage a portion (77) of an inner wall (71, 79) formed in a rod receiving channel (74) or a bore (700) of a receiving part (7).本案提供一種把骨骼固定裝置的容納件(7)置於骨骼固定元件(9)頭部(91)所用裝置(1),包括:一把持部(2);一筒夾(3),具有一縱軸線(Z),被該把持部(2)所把持,其中該筒夾(3)含一末梢端部(31),構成垂直於該縱軸線(Z)之一徑向(R)撓性擴張(E)和/或壓縮(C);其中在該筒夾(3)的該末梢端部(31)之一外輪廓,設有一結合特點(34),構成與一桿件容納槽(74)內所形成一內壁(71,79)之一部位(77),或一容納件(7)之一腔孔(700)結合。2‧‧‧把持部3‧‧‧筒夾4‧‧‧操作部5‧‧‧柱塞6‧‧‧彈性構件7‧‧‧容納件8‧‧‧內蓋21‧‧‧固設機件35‧‧‧基端部38‧‧‧長方形通孔52‧‧‧尖端部A‧‧‧此箭頭表示把持部推進方向Rem‧‧‧此箭頭表示操作部卸除方向
