Locking plate for bone anchors
First Claim
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1. A femoral neck fracture fixation system, comprising:
- a plurality of elongated bodies, each having a proximal end and a distal end;
a distal anchor on the distal end of each of the elongated bodies;
a first retention structure on the elongated bodies, proximal to the distal anchor; and
a plate with a plurality of openings, the plate being moveably carried by the plurality elongated bodies, andwherein the plate is movable in the distal direction with respect to the elongated bodies and the first retention structure resists proximal movement of the plate with respect to the elongated bodies and wherein each elongated body comprises first portion and a second portion that are detachably coupled to each other at a junction.
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Abstract
Disclosed is a bone fracture fixation system, such as for reducing and compressing fractures in the proximal femur. The fixation system includes a plurality of elongated bodies with a helical cancellous bone anchor on a distal end of each of the bodies. An axially moveable plate with a plurality of openings is carried by the proximal end of the elongated bodies. The elongated bodies are rotated into position across the fracture or separation between adjacent bones and into the adjacent bone or bone fragment, and the plate is distally advanced to apply secondary compression and lock the device into place. The device may also be used for soft tissue attachments.
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Citations
34 Claims
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1. A femoral neck fracture fixation system, comprising:
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a plurality of elongated bodies, each having a proximal end and a distal end; a distal anchor on the distal end of each of the elongated bodies; a first retention structure on the elongated bodies, proximal to the distal anchor; and a plate with a plurality of openings, the plate being moveably carried by the plurality elongated bodies, and wherein the plate is movable in the distal direction with respect to the elongated bodies and the first retention structure resists proximal movement of the plate with respect to the elongated bodies and wherein each elongated body comprises first portion and a second portion that are detachably coupled to each other at a junction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A bone fracture fixation device, comprising:
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at least two of elongated bodies, each having a proximal end and a distal end; a cancellous bone anchor on the distal end of each of the two the elongated bodies; a plate having at least two openings and being axially movably mountable on the elongated bodies; and complimentary surface structures in between the elongated bodies and the plate that permit advancing the plate in the distal direction to apply compression across a fracture but that resist axial proximal movement of the plate with respect to the elongated bodies. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A femoral neck fracture fixation system, comprising:
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a plurality of elongated bodies, each having a proximal end and a distal end; a distal anchor on the distal end of each of the elongated bodies; a first retention structure on the elongated bodies, proximal to the distal anchor; and a plate with a plurality of openings, the plate being moveably carried by the plurality elongated bodies, and wherein the plate is movable in the distal direction with respect to the elongated bodies and the first retention structure resists proximal movement of the plate with respect to the elongated bodies and wherein the plate includes at least three openings arranged in a triangular pattern. - View Dependent Claims (29, 30, 31, 32, 33, 34)
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Specification