초록 ▼

This screw nut (1) is designed for the rigid fixation of a bone screw (15) to a bone plate (20) having plate holes (21). It has a generally cylindrical body (5,6) with a central axis (2), a central hole (3) with a hole axis (34) and an internal thread (4) designed to receive a bone screw (15). The b

This screw nut (1) is designed for the rigid fixation of a bone screw (15) to a bone plate (20) having plate holes (21). It has a generally cylindrical body (5,6) with a central axis (2), a central hole (3) with a hole axis (34) and an internal thread (4) designed to receive a bone screw (15). The body (5,6) comprises of a lower section (5), an upper section (6), a lower side (9) and an upper side (10). The profile (7) of the upper section (6) orthogonal to said hole axis (34) is smaller than the profile (8) of the lower section (5) orthogonal to said hole axis (34) and the upper section (6) is shaped to be insertable into the plate hole (21) of the bone plate (20).

대표청구항 ▼

An assembly for the internal fixation of bones comprising a bone plate having an upper surface, a lower surface shaped for positioning adjacent a bone to be treated, and a screw hole for accommodating a bone screw, in combination with a nut for fixing a bone screw to said plate, said nut having a ce

An assembly for the internal fixation of bones comprising a bone plate having an upper surface, a lower surface shaped for positioning adjacent a bone to be treated, and a screw hole for accommodating a bone screw, in combination with a nut for fixing a bone screw to said plate, said nut having a central axis, a through hole extending along said axis, a lower section and an upper section, said upper section having a cross section orthogonal to said axis smaller than the cross section of said lower section orthogonal to said axis, thus to form a shoulder at the junction of said upper and lower sections, the upper section of the nut and the plate hole being shaped to coaptly join one another, with said shoulder abutting the lower surface of said plate, at least a part of the through hole of said nut being threaded, to engage a bone screw inserted in the hole in said plate.