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US 2008/0167666 A1Published application
Vertebral Osteosynthesis Equipment
AssigneeMedicrea International
InventorsVincent Fiere, Pierre Bernard, Olivier Ricart
Life of this patent
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AssigneeMedicrea International
InventorsVincent Fiere, Pierre Bernard, Olivier Ricart
Estimating the term…
This equipment includes at least one U-shaped clip (1) whose lateral branches (10) have sections and widths such that they may be inserted in the vertebral bodies (100) of two vertebrae by impaction on the intermediate branch (11) of the clip (1), so as to rest along the cortical bones of the vertebral bodies, and whose intermediate branch (11) is deformable in such a way as to allow a reduction of the distance between the lateral branches (10); the intermediate branch, before implantation, has a length such that one of the lateral branches (10) may be positioned slightly above the cortical bone forming the plate of the subjacent vertebra while the other lateral branch (10) may be positioned slightly below the cortical bone forming the plate of the subjacent vertebra, and has, after deformation, a length such that the two lateral branches (10) may be brought closer to each other.
1- Vertebral osteosynthesis equipment, characterized in that it comprises at least one U-shaped clip (1) whose lateral branches (10) have sections and widths such that they may be inserted in the vertebral bodies (100) of the two vertebrae to be treated by impaction on the intermediate branch (11) of the clip (1), so as to rest along the cortical bones of said vertebral bodies, and whose intermediate branch (11) is deformable in such a way as to allow a reduction of the distance between said lateral branches (10);
2- Equipment according to claim 1, characterized in that it comprises at least one intervertebral implant (3) designed to be inserted between the vertebrae before positioning the clip (1).
3- Equipment according to claim 1, characterized in that it comprises a plurality of clips (1) having intermediate and/or lateral branches (10, 11) of different lengths.
4- Equipment according to claim 1, characterized in that the intermediate branch (11) of each clip (1) is formed by two deformable branches (12) extending one along the other, bent at the level of their median zones.
5- Equipment according to claim 4, characterized in that each clip (1) is made from a single band of material, in particular titanium, the median zone of this band being split to allow said deformable branches (12) to be accommodated, and said band being folded to form said lateral branches (10) and said intermediate branch (11).
6- Equipment according to claim 4, characterized in that the opening separating said bent deformable branches (12) extends beyond the areas connecting the lateral branches (10) to the intermediate branch (11) in such a way that each lateral branch (10) itself presents a median slot, or a median feed slot at the level of its base.
7- Equipment according to claim 1, characterized in that the lateral branches (10) of at least one clip (1) comprise bone anchoring teeth arranged on the branches (10), preferably at their sides facing each other.
8- Equipment according to claim 4, characterized in that it comprises an instrument (2) comprising an anvil (32) and two branches (20) connected in a pivoting manner to each other, wherein each branch (20) presents, at its working extremity, a stud (25) appropriate for resting against the bent portion of a bent deformable branch (12) of the clip (1), and a contact surface (26) situated at the level of the base of the stud (25);
9- Equipment according to claim 8, characterized in that the instrument (2) is equipped with means (22, 23, 27, 30, 31) allowing its branches (20) to be immobilized in said “impacting” position.
10- Equipment according to claim 9, characterized in that said means comprises elastic means (22) for pivoting the branches (20) one apart the other, a stud (27) on one of the branches (20), a cross bar (23) pivotally connected to the other branch (20), a cavity (30) in the cross bar (23), appropriate for receiving said stud (27), and an abutment (31) on the cross bar (23), the cavity (30) being arranged in such a way as to be slightly offset with relation to the stud (27), in the normal position of the branches (20), and the abutment (31) being immediately adjacent to the cavity (30), on the side of the cavity turned toward said other branch (20).
11- Equipment according to claim 1, characterized in that it comprises a support (35) for presenting at least one clip (1), allowing said clip (1) to be held such that a clip gripping instrument (2) may easily grab this clip (1).
12- Equipment according to claim 11, characterized in that the presentation support (35) is in the form of a plate with holes for receiving the lateral branches (10) of at least one clip (1), and preferably a series of clips (1) disposed in an orderly manner according to their dimensions.
13- Equipment according to claim 11, characterized in that the presentation support (35) is equipped with means (36) for guiding an instrument (2) allowing the gripping of a clip (1) in order to ensure adequate positioning of this instrument (2) with relation to this clip (1).
(canceled)
(canceled)
16- Equipment according to claim 2, characterized in that it comprises a plurality of clips (1) having intermediate and/or lateral branches (10, 11) of different lengths.
17- Equipment according to claim 2, characterized in that the intermediate branch (11) of each clip (1) is formed by two deformable branches (12) extending one along the other, bent at the level of their median zones.
18- Equipment according to claim 3, characterized in that the intermediate branch (11) of each clip (1) is formed by two deformable branches (12) extending one along the other, bent at the level of their median zones.
19- Equipment according to claim 5, characterized in that the opening separating said bent deformable branches (12) extends beyond the areas connecting the lateral branches (10) to the intermediate branch (11) in such a way that each lateral branch (10) itself presents a median slot, or a median feed slot at the level of its base.
20- Equipment according to claim 12, characterized in that the presentation support (35) is equipped with means (36) for guiding an instrument (2) allowing the gripping of a clip (1) in order to ensure adequate positioning of this instrument (2) with relation to this clip (1).
21- Equipment according to claim 5, characterized in that it comprises an instrument (2) comprising an anvil (32) and two branches (20) connected in a pivoting manner to each other, wherein each branch (20) presents, at its working extremity, a stud (25) appropriate for resting against the bent portion of a bent deformable branch (12) of the clip (1), and a contact surface (26) situated at the level of the base of the stud (25);
22- Equipment according to claim 6, characterized in that it comprises an instrument (2) comprising an anvil (32) and two branches (20) connected in a pivoting manner to each other, wherein each branch (20) presents, at its working extremity, a stud (25) appropriate for resting against the bent portion of a bent deformable branch (12) of the clip (1), and a contact surface (26) situated at the level of the base of the stud (25);
Dependencies are inferred from the claim text.