Vertebral fixation device
AssigneeImplanet
InventorsRégis Le Couëdic, Denis Pasquet
Life of this patent
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Abstract
A vertebral fixation system comprising two fixation parts which each have a pedicular element that can be engaged in a vertebral pedicle and are connected to each other by a connecting element. The connecting element is a flexible strip, the pedicular elements are screws, and each fixation part comprises a fixation head on a rod secured to means for adjustably locking the flexible strip under tension in relation to the head.
Claims13
A vertebral anchoring system comprising two anchoring components which each have a pedicle element comprising a pedicle screw for engagement in a vertebral pedicle and are connected to each other by a linking element, wherein the linking element is a flexible band and wherein each anchoring component has a fixing head configured for fixing to a rod which is rigidly connected to a ring into which can be inserted a means for adjustably blocking the flexible band under tension with respect to the fixing head, wherein the ring comprises a first through-orifice configured to be clipped by deformation onto the upper periphery of the fixing head, a second lateral through-orifice configured for passage of the band, and a third orifice configured for insertion of the means for blocking the band into the ring, and wherein said anchoring system includes two rods corresponding to said fixing heads.
A vertebral anchoring method for rigidly connecting two adjacent vertebrae to each other, comprising:
- screwing first and second pedicle screws into the opposite pedicles of a vertebra;
- sliding first and second rods through first and second fixing heads associated with the first and second pedicle screws, respectively;
- screwing a compression screw onto each rod through an upper part of each fixing head;
- clipping a ring onto an upper periphery of each fixing head, each ring comprising a first through-orifice that can be clipped by deformation onto said upper periphery, a second lateral through-orifice for passage of a flexible band, and a third orifice for insertion of means for blocking the flexible band on said fixing head;
- placing a flexible band on an adjacent vertebra and in the ring of each fixing head;
- blocking said flexible band on the first fixing head by inserting in said first fixing head a first means for blocking the band;
- tensioning said flexible band by pulling on the other side of the flexible band;
- and
- blocking the flexible band with respect to the second fixing head by inserting in said second fixing head a second means for blocking the band.
A vertebral anchoring system comprising:
- a first rod and a second rod;
- a first anchoring component having a first head configured to be fixed to the first rod, and a first pedicle screw for engagement in a vertebral pedicle;
- a second anchoring component having a second head configured to be fixed to the second rod, and a second pedicle screw for engagement in a vertebral pedicle;
- a flexible band interconnecting the first and second anchoring components;
- first and second rings configured to be rigidly connected to the first and second heads, wherein each first and second ring comprises a first through-orifice configured to be clipped by deformation onto the upper periphery of the head of the respective anchoring component, a second lateral through-orifice configured for passage of the flexible band, and a third orifice configured for insertion of a band retainer that adjustably secures the flexible band under tension to the ring.
Dependencies are inferred from the claim text.