Spinal stabilization device
First Claim
Patent Images
1. An orthopedic fixation device, comprising:
- an elongate body, having a proximal end and a distal end;
a distal anchor on the distal end;
a retention structure on the elongate body, proximal to the anchor; and
a proximal anchor, moveably carried by the elongate body, the proximal anchor comprising a tubular sleeve and a radially outward extending head;
at least one complementary retention structure on the proximal anchor configured for permitting proximal movement of the elongate body with respect to the proximal anchor but resisting distal movement of the elongate body with respect the proximal anchor; and
a washer that is angularly moveable with respect to the longitudinal axis of the tubular sleeve, the washer having aperture that is elongated with respect to a first axis such that the washer permits greater angular movement with respect to the longitudinal axis of the tubular sleeve in a plane containing the first axis.
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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
17 Claims
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1. An orthopedic fixation device, comprising:
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an elongate body, having a proximal end and a distal end; a distal anchor on the distal end; a retention structure on the elongate body, proximal to the anchor; and a proximal anchor, moveably carried by the elongate body, the proximal anchor comprising a tubular sleeve and a radially outward extending head; at least one complementary retention structure on the proximal anchor configured for permitting proximal movement of the elongate body with respect to the proximal anchor but resisting distal movement of the elongate body with respect the proximal anchor; and a washer that is angularly moveable with respect to the longitudinal axis of the tubular sleeve, the washer having aperture that is elongated with respect to a first axis such that the washer permits greater angular movement with respect to the longitudinal axis of the tubular sleeve in a plane containing the first axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An orthopedic fixation device;
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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; a proximal anchor, axially moveable with respect to the elongate pin and comprising a split ring positioned within an annular recess formed within the proximal anchor, the split ring having at least one gap formed between two ends, the split ring being moveable between a first position and a second position, the second position being located closer to the longitudinal axis of the elongate pin as compared to the first position so as to engage the first retention structure and prevent proximal movement of the proximal anchor with respect to the elongated pin while the first position allows distal movement of the proximal anchor with respect to the pin; and anti-rotational structure for preventing rotation of the split ring about the longitudinal axis of the elongate pin. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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Specification