Bone fixation system
AssigneeOSO Extremity, Inc.
InventorsPete O'Donald, Mickey Stapp
Life of this patent
Estimating the term…
Abstract
A system and method for osseous fixation is a surgical hardware device that allows bone fixation for purposes of fracture repair, arthrodesis, or other types of orthopedic applications. A partially threaded wire or pin is inserted into the bone and external compression and rotational stability are achieved with a locking cap. The locking cap may include serrations or other anti-rotation features which engage bone to provide rotational stability. Upon adequate bone healing, the external cap may be used to facilitate removal of the wire/pin from the bone.
Claims19
A system for fixation of a first bone portion relative to a second bone portion, the system comprising:
- a cap comprising a body portion and a stem portion, the cap further comprising a first bore and a second bore transverse to, and in communication with, the first bore;
- a wire insertable through the first and second bone portions, the wire comprising a first end, and a threaded second end anchorable in the second bone portion, wherein the first end of the wire is slidably receivable within the first bore of the cap and the cap is movable along wire toward the threaded second end of the wire to decrease a distance between the cap and the threaded second end of the wire;
- and
- a set screw receivable in the second bore of the cap, wherein the set screw is actuable to contact the wire to fix a position of the wire within the first bore;
- where in the stem portion of the cap is configured for subcutaneous use and comprises one or more anti-rotation features configured to contact the first bone portion in response to pressure urging the cap against the first bone portion to prevent rotation of the cap.
A system for fixation of a first bone portion relative to a second bone portion, the system comprising:
- a cap comprising a body portion comprising a first constant width, a subcutaneous portion comprising a second smaller constant width, and a chamfered portion for reducing the first width of the body portion to the second width of the subcutaneous portion, the cap further comprising a first bore passing through the body portion and the subcutaneous portion and a second bore passing through the body portion, transverse to, and in communication with, the first bore;
- a wire insertable through the first and second bone portions, the wire comprising a first end, and a threaded second end anchorable in the second bone portion, wherein the first end of the wire is slidably receivable within the first bore of the cap and the cap is movable through the first bore of the cap along the wire toward the threaded second end of the wire to decrease a distance between the cap and the threaded second end of the wire;
- and
- a set screw receivable in the second bore of the cap, wherein the set screw is actuable to contact the wire to fix a position of the wire within the first bore;
- wherein the subcutaneous portion is configured to pass through the skin and subcutaneous tissue.
A system for fixation of a first bone portion relative to a second bone portion, the system comprising:
- a cap comprising a body portion comprising a first width and a subcutaneous portion comprising a second constant width smaller than the first width, the cap further comprising a first bore and a second bore transverse to, and in communication with, the first bore;
- a wire insertable through the first and second bone portions, the wire comprising a first end, and a threaded second end anchorable in the second bone portion, wherein the first end of the wire is slidably receivable within the first bore of the cap and the cap is movable along wire toward the threaded second end of the wire to decrease a distance between the cap and the threaded second end of the wire;
- and
- a set screw receivable in the second bore of the cap, wherein the set screw is actuable to contact the wire to fix a position of the wire within the first bore and to prevent rotation of the wire relative to the first and second bone portions;
- wherein the subcutaneous portion of the cap comprises one or more anti-rotation features that anchor the cap to the first bone portion in response to pressure urging the subcutaneous portion against the first bone portion to prevent rotation of the cap, decreasing rotational instability of the system.
Dependencies are inferred from the claim text.