Patent ID: 8685024

Claim:
An intramedullary fixation device used in bone fixation and stabilization, comprising: an arrowhead-shaped distal head comprising a distal end having a sharp point, the distal head having first, second, third, and fourth outwardly facing side surfaces forming a pyramidal shape, the first and third side surfaces being opposed from each other and forming a first angle, and the second and fourth side surfaces being opposed from each other and forming a second angle, the second angle being different than the first angle, the first, second, third, and fourth side surfaces converging and meeting at the sharp point of the distal end, each of the first and third side surfaces having a proximally projecting edge forming a tip of a barb, the barbs being configured to engage tissue and inhibit rotational movement and inhibit axial movement of the distal head in a proximal direction, the distal head being sized to fit within an intramedullary canal of a more-distal phalanx portion of one of a finger and a toe; an arrowhead-shaped proximal head comprising a proximal end having a sharp point, the proximal head having fifth, sixth, seventh, and eighth outwardly facing side surfaces, the fifth and seventh side surfaces being opposed from each other and forming a third angle, and the sixth and eighth side surfaces being opposed from each other and forming a fourth angle, the third angle being different than the fourth angle, the fifth, sixth, seventh, and eighth side surfaces converging and meeting at the sharp point of the proximal end, each of the fifth and seventh side surfaces having a distally projecting edge forming a tip of a barb, the barbs being configured to engage tissue and inhibit rotational movement and inhibit axial movement of the proximal head in a distal direction, the proximal head being sized to fit within an intramedullary canal of a more-proximal phalanx portion of said one of a finger and a toe; and a rigid body extending between and connecting the distal head and the proximal head, the body having a rigidity sufficient to withstand bending loading applied by the phalanges, the rigid body being sized and shaped to fit within the intramedullary canals of both the more-distal phalanx portion and the more-proximal phalanx portion, the distal head, proximal head, and rigid body being sized and shaped so that the more-distal phalanx portion may abut directly against the more-proximal phalanx portion when the distal head is in the more-distal phalanx portion and the proximal head is in the more-proximal phalanx portion.