Intersomatic cage
OwnerMichael Perisicinventor
Life of this patent
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Abstract
The invention relates to an intersomatic cage comprising a body (3) and a part (2) that is designed to dilate the intersomatic space between two vertebrae (8, 8′) by rotating the cage so that the cage (1) can be inserted into the space. The body (3) has a prism shape with a substantially planar upper surface (6) which can bear against the superior vertebral endplate (8) and a substantially planar lower surface (6′) which can bear against the inferior vertebral endplate (8′).
Claims16
An intersomatic cage system comprising:
- An intersomatic cage (1) which has an essentially flat superior surface (6) capable of resting against a superior vertebra (8), an essentially flat inferior surface (6′) capable of resting against an inferior vertebra and an anterior face (7) at one end of the intersomatic cage (1) between the superior and inferior surfaces (6, 6′);
- and
- Two elongated members (13, 13′;
- 21, 21′) disposed in spaced-apart relationship that are fixed on the intersomatic cage (1) and protrude from the anterior face (7) and/or from the superior or inferior surface (6, 6′) of the intersomatic cage (1) or that at least a part of one of which is retractably mounted on the intersomatic cage (1) to be able to protrude from the anterior face (7) and/or from the superior or inferior surface (6, 6′) of the intersomatic cage (1), wherein said two protruding elongated members (13, 13′;
- 21, 21′) have outer parts that are spaced-apart by a distance greater than the distance between the superior and inferior surfaces (6, 6′) of the intersomatic cage (1) such that the two protruding spaced-apart elongated members (13, 13′;
- 21, 21′) are capable of expanding the intersomatic space between the two vertebrae (8, 8′) to introduce the intersomatic cage (1) in the intersomatic space when the two protruding spaced-apart elongated members (13, 13′;
- 21, 21′) are introduced between the two vertebrae (8, 8′).
An intersomatic cage comprising a cage body (3) which has an essentially flat superior surface (6) capable of resting against a superior vertebra (8), an essentially flat inferior surface (6′) capable of resting against an inferior vertebra, two lateral sides (3′, 3″) and an anterior face (7) at one end of the cage body (3) between the superior and inferior surfaces (6, 6′), and defining a longitudinal direction leading into the anterior face (7) of the cage body (3), wherein the essentially flat superior and inferior surfaces (6,6′) of the cage body (3) are arranged relative to one another such that the height of the cage body (3) at the anterior face (7) or at one of the lateral sides (3″) is greater than the height of the cage body (3) at a posterior face or at the other one of the lateral sides (3′) and defines a part of the cage body (3) adjacent to the anterior face (7) or to the higher of the lateral sides (3″) where the essentially flat superior face (6) is most spaced apart from the essentially flat inferior face (6′), the cage body (3) comprising at least one longitudinal groove (16) arranged along at least a portion of the essentially flat superior surface (6) or the essentially flat inferior surface (6′) of the cage body (3) that encompasses said part of the cage body (3) adjacent to the anterior face (7) or to the higher of the lateral sides (3″) where the essentially flat superior surface (6) and the essentially flat inferior surface (6′) of the cage body (3) are most spaced apart.
Dependencies are inferred from the claim text.