Abstract: A bone fusing device to connect and facilitate fusion between two adjacent phalanges in a body has a single elongated body having a first distal end and a second proximal end connected by a middle portion having four radially extending anti-rotation fins. Each end has a bone entry tip and a plurality of adjacent barbs. Each of the barbs has a sloped surface for entry into the bone and a sharp surface to prevent extraction once press fit into one of the phalanges. Preferably, the first distal end is shorter than the second proximal end. The elongated body is straight or has affixed bend at a location in the middle portion.

Abstract: A bone anchor device to connect two bone segments in a body has an elongated cylindrical member. The elongated cylindrical member has a shank, a first distal threaded end and a second proximal threaded end spaced by a middle portion of the shank. A first double helical thread formed on the first distal end has a pitch equal to or greater than a second helical thread formed at the second proximal end to create a compression between the two bone segments being connected. The shank has a maximum diameter extending the length of the second proximal thread end and extends therefrom on a constant tapered slope angle through the thread of the first distal end. This creates an increasing thread depth from a start of the distal threads to a maximum adjacent a tip at the distal end of the shank.

Abstract: A bone fusing device to connect and facilitate fusion between two adjacent phalanges in a body has a single elongated body having a first distal end and a second proximal end connected by a middle portion having four radially extending anti-rotation fins. Each end has a bone entry tip and a plurality of adjacent barbs. Each of the barbs has a sloped surface for entry into the bone and a sharp surface to prevent extraction once press fit into one of the phalanges. Preferably, the first distal end is shorter than the second proximal end. The elongated body is straight or has affixed bend at a location in the middle portion.