Bone fixation device
First Claim
Patent Images
1. A bone fixation device, for securing a first bone fragment to a second bone fragment, comprising:
- an elongate support, having a proximal end and a distal end;
at least one axially compressible anchor on the support;
an elongate pin, axially moveable with respect to the anchor and linked to the support; and
at least one retention structure in between the pin and the support, for permitting proximal movement of the pin with respect to the support but resisting distal movement of the pin with respect to the support;
wherein axial proximal movement of the pin with respect to the support axially shortens the support thereby causing at least a portion of the anchor to incline radially outwardly from the support.
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Abstract
Disclosed is a bone fixation device of the type useful for connecting two or more bone segments during the healing process. The device comprises an elongate pin having a distal anchor thereon. A proximal anchor is axially movably disposed with respect to the pin, to accommodate different bone dimensions and permit appropriate tensioning of the fixation device. The bone fixation device may comprise bioabsorbable or permanent materials such as poly-p-dioxanone, poly L-lactide (PLLA), nylon or stainless steel.
488 Citations
24 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 support, having a proximal end and a distal end;
at least one axially compressible anchor on the support;
an elongate pin, axially moveable with respect to the anchor and linked to the support; and
at least one retention structure in between the pin and the support, for permitting proximal movement of the pin with respect to the support but resisting distal movement of the pin with respect to the support;
wherein axial proximal movement of the pin with respect to the support axially shortens the support thereby causing at least a portion of the anchor to incline radially outwardly from the support. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A bone fixation device for fixing two or more bone fragments, comprising:
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an elongate tubular body, having a proximal end, a distal end and a longitudinal axis;
at least two distal anchors on the tubular body spaced axially apart along the longitudinal axis, the anchors moveable from an axial orientation for distal insertion through a bore in the bone to an inclined orientation to resist axial movement through the bore;
a proximal anchor on the tubular body; and
an elongate pin axially moveable within the tubular body and linked to the tubular body such that proximal retraction of the pin with respect to the tubular body advances the distal anchors from the axial orientation to the inclined orientation. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
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Specification