Transverse spinal linking device and system
AssigneeLDR Medical
InventorsPaul Cho, Gregory Hoffman, Hervé Chataigner
Life of this patent
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Abstract
A transverse spinal linking device links at least one spinal osteosynthesis bar to a transverse bar. The device may include a first part that has a vertical axis and a first jaw, a second part that has a second jaw, and a clamping resource. The first part may include a sliding surface, which may be inclined in relation to the vertical axis, and which may mate with at least one sliding surface of the second part. The sliding surfaces may be configured so that the descent of the second part results in an approach of the jaws, with the clamping action of the clamping resource causing the fixing and/or the locking of the device on the osteosynthesis bar and the fixing and/or the locking of the transverse bar.
Claims20
A transverse spinal linking device for attaching a spinal osteosynthesis bar to a transverse bar comprising:
- a clamping resource having a bearing surface configured to bear on the transverse bar when fixing the transverse bar;
- a first part comprising
- a first jaw configured to grip the spinal osteosynthesis bar,
- a fixing head disposed along a vertical axis and configured to mate with the clamping resource such that the clamping resource can descend along the vertical axis, and
- at least one first sliding surface that is inclined in relation to the vertical axis;
- and
- a second part separate from the first part comprising
- a second jaw configured to grip the spinal osteosynthesis bar,
- a fixing body having a fixing body passage configured to receive the fixing head,
- at least one bearing surface configured to support the transverse bar and such that that the descent of the clamping resource provides for the pressing of the transverse bar against the bearing surface and the fixing of the transverse bar with the transverse spinal linking device, with the pressing of the transverse bar against the bearing surface urging the descent of the second part in relation to the first part, and
- at least one second sliding surface configured to mate with the at least one first sliding surface, with the mating of the first and second sliding surfaces configured such that the descent of the clamping resource provides for
- the approach of the first jaw and the second jaw, and
- the fixing of the osteosynthesis bar and transverse spinal linking device.
A spinal stabilization system that comprises at least one transverse bar, at least one osteosynthesis bar, and at least one transverse spinal linking device comprising:
- a clamping resource having a bearing surface configured to bear on the transverse bar when fixing the transverse bar;
- a first part comprising
- a first jaw configured to grip the spinal osteosynthesis bar,
- a fixing head disposed along a vertical axis and configured to mate with the clamping resource such that the clamping resource can descend along the vertical axis, and
- at least one first sliding surface that is inclined in relation to the vertical axis;
- and
- a second part separate from the first part comprising
- a second jaw configured to grip the spinal osteosynthesis bar,
- a fixing body having a fixing body passage configured to receive the fixing head,
- at least one bearing surface configured to support the transverse bar and such that that the descent of the clamping resource provides for the pressing of the transverse bar against the bearing surface and the fixing of the transverse bar with the transverse spinal linking device, with the pressing of the transverse bar against the bearing surface urging the descent of the second part in relation to the first part, and
- at least one second sliding surface configured to mate with the at least one first sliding surface, with the mating of the first and second sliding surfaces configured such that the descent of the clamping resource provides for
- the approach of the first jaw and the second jaw, and
- the fixing of the osteosynthesis bar and transverse spinal linking device.
Dependencies are inferred from the claim text.