US 6,855,146 B2 · Intramedullary nail

Abstract

The invention relates to an intramedullary nail used for treating fractures of the femur. It comprises a distal end, which is appointed for insertion into the marrow cavity channel, a proximal end, and a longitudinal axis. A first bore is located adjacent the proximal end and extends through the proximal end and transversely intersects the longitudinal axis, and serves to accommodate a femoral head screw. The center axis of the first bore forms an angle with the longitudinal axis that ranges from 110° to 150°. A second bore is located between the first bore and the proximal end and extends through the proximal end and transversely intersects the longitudinal axis, and serves to accommodate a hip pin. The second bore is at least partially shaped as an oblong hole or slot with a width B and a length L>B, and the length L of the oblong hole extends in the direction of the longitudinal axis.

Claims19

Dependent claims

A fixation system for the treatment of femoral fractures, comprising an intramedullary nail, a femoral-head screw and a hip pin, wherein

the intramedullary nail includes a distal end for insertion in the medullary channel, a proximal end, a longitudinal axis and, a first borehole located closer to the proximal end that intersects the longitudinal axis and is configured to accept the femoral-head screw, and the first borehole defining a center line extending at an angle α of 30° to 70° relative to the longitudinal axis;
and
the intramedullary nail includes a second borehole provided between the first borehole and the proximal end that intersects the longitudinal axis and is configured to accept the hip pin and is at least in part elongated into a slot with a width B and a length L>B, said length L of the slot extending in the direction of the longitudinal axis.

Dependencies are inferred from the claim text.

Intramedullary nail

Life of this patent

Intramedullary nail

Life of this patent

Abstract

Claims19