Method and apparatus for bone fixation with secondary compression
First Claim
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1. A bone fixation device, comprising:
- an elongated body, having a proximal end and a distal end;
a helical anchor on the distal end of the elongated body;
a retention structure on the elongated body that is proximal to the helical anchor; and
a proximal anchor, moveably carried by the body and comprising a tubular sleeve including a plurality of graduations positioned on an outer surface of the tubular sleeve;
wherein the proximal anchor is movable in the distal direction with respect to the body, the retention structure resists proximal movement of the proximal anchor with respect to the body;
wherein the retention structure comprises a series of ridges or grooves.
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Abstract
Disclosed is a fracture fixation device, for reducing and compressing fractures in a bone. The fixation device includes an elongate body. An axially moveable proximal anchor is carried by the proximal end of the fixation device and comprises a tubular sleeve that includes a plurality of graduations positioned on an outer surface of the tubular sleeve. The device is rotated into position across the femoral neck and into the femoral head, and the proximal anchor is distally advanced to lock the device into place. In certain embodiments, the elongated body includes a distal anchor with a distal cutting tip.
399 Citations
39 Claims
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1. A bone fixation device, comprising:
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an elongated body, having a proximal end and a distal end;
a helical anchor on the distal end of the elongated body;
a retention structure on the elongated body that is proximal to the helical anchor; and
a proximal anchor, moveably carried by the body and comprising a tubular sleeve including a plurality of graduations positioned on an outer surface of the tubular sleeve;
wherein the proximal anchor is movable in the distal direction with respect to the body, the retention structure resists proximal movement of the proximal anchor with respect to the body;
wherein the retention structure comprises a series of ridges or grooves. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A bone fixation device, comprising:
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an elongated body, having a proximal end and a distal end;
a helical anchor on the distal end of the elongated body;
the helical anchor including a distal cutting tip;
a retention structure on the elongated body that is proximal to the helical anchor; and
a proximal anchor, moveably carried by the body and comprising a tubular sleeve;
wherein the proximal anchor is movable in the distal direction with respect to the body, the retention structure resists proximal movement of the proximal anchor with respect to the body, wherein the helical anchor comprises an elongated member that is spirally wrapped about a central core that defines a central lumen. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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Specification