Proximal anchors for bone fixation system
First Claim
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1. A bone fixation device, for securing a first bone fragment to a second bone fragment, comprising:
- an elongate pin, having a proximal end, a distal end and a first retention structure;
at least one distal anchor carried by the elongate pin; and
a proximal anchor, axially moveable with respect to the elongate pin and comprising a second retention structure;
wherein at least a portion of the second retention structure is moveable between a first position and a second position, the second position being located closer to a longitudinal axis of the elongate pin as compared to the first position so as to engage at least a portion of the first retention structure and prevent proximal movement of the proximal anchor with respect to the elongate pin while the first position allows distal movement of the proximal anchor with respect to the elongate pin;
the proximal anchor including at least one slot which defines at least one lever arm, the second retention structure being positioned on the at least one lever arm.
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Abstract
Disclosed is a bone fixation device of the type useful for connecting soft tissue or tendon to bone or for connecting two or more bones or bone fragments together. The device comprises an elongate body having a distal anchor thereon. An axially moveable proximal anchor is carried by the proximal end of the fixation device, to accommodate different bone dimensions and permit appropriate tensioning of the fixation device.
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Citations
20 Claims
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1. A bone fixation device, for securing a first bone fragment to a second bone fragment, comprising:
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an elongate pin, having a proximal end, a distal end and a first retention structure;
at least one distal anchor carried by the elongate pin; and
a proximal anchor, axially moveable with respect to the elongate pin and comprising a second retention structure;
wherein at least a portion of the second retention structure is moveable between a first position and a second position, the second position being located closer to a longitudinal axis of the elongate pin as compared to the first position so as to engage at least a portion of the first retention structure and prevent proximal movement of the proximal anchor with respect to the elongate pin while the first position allows distal movement of the proximal anchor with respect to the elongate pin;
the proximal anchor including at least one slot which defines at least one lever arm, the second retention structure being positioned on the at least one lever arm. - 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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Specification