Device for the fixation of tubular bone fractures with an intramedullary nail and anchoring pin

Claim 2

Device for fixing pipe bone fractures with bone marrow nail and locking bolt, characterized in that a first transverse bolt serving for the initial locking is provided with a reception part with which the tip part of the marrow nail, which is provided with an introduction part, can be brought into engagement by longitudinal sliding of the marrow nail at right angles to the stationary transverse bolt.

Claim 3

Device according to claim 1, characterized in that the tip part of the marrow nail (1; 10) exhibits a longitudinal slit (3) open from the introduction end of the nail or a transverse channel (73), into which longitudinal slit or transverse channel the shank part serving as reception part of the transverse bolt (2a) fits.

Claim 4

Device according to claim 1, characterized in that the tip part of the marrow nail (10) exhibits at least one transverse groove (13; 13a) open from the introduction end of the nail, into which the shank part serving as reception part of the transverse bolt (2a) fits.

Claim 5

Device according to claim 2 or 3, characterized in that the marrow nail exhibits continuous transverse holes (4) for further transverse bolts (2b, 2c), whilst the axes of said transverse holes lie in an axial plane of the marrow nail, whilst the plane of the longitudinal slit (3; 43) and/or the axis of the transverse groove (13: 13a) of the tip part of the marrow nail (1; 10) is oriented in or parallel or at right angles to said axial plane.

Claim 6

Device according to any of claims 1 to 4, characterized in that the reception part of the shank of the transverse bolt (2a) is made thicker or thinner in cross-section compared to the remaining transverse bolt shank parts.

Claim 7

Device according to any of claims 1 to 4, characterized in that the transverse bolt (2a) exhibiting the reception part is an initial locking bolt provided with a terminal screwthread.

Claim 8

Device according to any of claims 1 to 4, characterized in that the transverse bolt exhibiting the reception part is a target bolt (52a) replaceable by an initial locking bolt (2a).

Claim 9

Device according to claim 1, characterized in that the shank of the transverse bolt (32a; 42a) exhibits as reception part a continuous transverse aperture (23b; 33b) into which the tip part (23a; 33a) of the marrow nail (10b), flattened or conically tapered compared to the shank cross-section of the marrow nail and serving as the introduction part, fits.

Claim 10

Device according to any of claims 1 to 8, characterized in that the reception part of the shank of the transverse bolt exhibits a circular or polyhedral cross-section.