Instrumentation for stabilizing certain vertebrae of the spine
AssigneeCo-Ligne AG
InventorRobert Lange
Life of this patent
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Abstract
The instrumentation includes a spinal stabilizing longitudinal element (1) that is adapted to be placed in a generally parallel relationship with the portion of the spine (A) to be treated, a connector (6) having an opening (7) therethrough, a mechanism (10) is adapted to affix said bone-anchoring element (2) in the opening (7); the connector (6) has a hook portion (11) adapted to cooperate with a support (32) of the bone-anchoring element (2) for clamping the longitudinal element (1); the hook portion (11) has at its bottom side a recess (12) for receiving the longitudinal element (1); the longitudinal element (1) is clamped against said support (32), so that the force of the support (32) on the longitudinal element (1) is approximately parallel to the axis (D) of the bone-anchoring element (2).
Claims8
An instrumentation for stabilizing certain vertebrae of the spine with respect to one another in a portion of the spine to be treated, the instrumentation comprising:
- a spinal stabilizing longitudinal element that is adapted to be placed in a generally parallel relationship with the portion of the spine to be treated;
- a bone-anchoring element;
- a connector having an opening therethrough, said opening having dimensions greater than a cross-section dimension of a machine thread section of said bone-anchoring element;
- a mechanism adapted to affix said bone-anchoring element in said opening;
- said mechanism comprising a pressure element received by said bone-anchoring element;
- wherein said connector has a hook portion adapted to cooperate with a support of the bone-anchoring element for clamping the longitudinal element;
- said hook portion having at a bottom side thereof a recess for receiving the longitudinal element;
- wherein said hook portion is provided with snap-on means when the longitudinal element is moved into the recess;
- wherein when said longitudinal element is clamped against an upper surface of said support said upper surface is perpendicular to an axis of the bone-anchoring element and a force of the support and the connector on the longitudinal element is approximately parallel to the axis of the bone-anchoring element.
Dependencies are inferred from the claim text.