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US 2008/0077142 A1Published application
Methods for treating fractures of the femur and femoral fracture devices
AssigneeSmith & Nephew, Inc.
InventorsAnthony James, R. McReynolds, Joseph Ferrante, Kohsuke Watanabe
Life of this patent
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Abstract
The present invention relates to methods and devices for treating femoral fractures, wherein a polyaxial cross member is employed to accommodate a wide range of angles and anteversions/retroversions in the femur, and different securing mechanisms can also be employed to hold and retain such polyaxial cross member in place at the desired orientation.
Claims13
1-25. (canceled)
An apparatus for treating fractures of the femur comprising:
- An intramedullary rod having a proximal end and a distal end and configured for insertion into the marrow canal of the femur, the intramedullary rod includes a proximal pair of openings closer to the proximal end than to the distal end;
- a spherical joint inserted internal to the intramedullary rod near the proximal pair of openings in the intramedullary rod;
- a cross member configured for insertion through the proximal pair of openings and the spherical joint to permit sliding compression of a fracture of the femur and rotation about a plurality of axes as provided by the spherical joint;
- and
- a securing mechanism internal to the intramedullary rod and configured to lock the polyaxial joint at a predetermined orientation in the first opening.
2 more elements
(canceled)
A method for treating fractures of the femur comprising:
- inserting an intramedullary rod having a proximal end and a distal end into a femur, the intramedullary rod further having a proximal pair of openings closer to the proximal end than to the distal end and a spherical joint internal to the intramedullary rod and near the proximal pair of openings;
- determining a proper angle for insertion of a cross member to engage a head of the femur;
- rotating the spherical joint to an orientation that corresponds with the proper angle for the cross member to engage the femoral head;
- engaging a securing mechanism to lock the spherical joint at the corresponding orientation;
- and
- inserting the cross member through the pair of proximal openings and the spherical joint to engage the femoral head, the cross member permitting a sliding compression of a fracture of the femur.
3 more elements
Dependencies are inferred from the claim text.