Implant for anterior dorsolumbar spinal osteosynthesis, intended for the correction of kyphoses
First Claim
1. A vertebral implant for the anterior removal and a reconstruction of damaged vertebrae which comprises in combination:
- a pair of clamps, each provided with a means for fixing said clamp to a vertebra situated on either side of a damaged vertebra and provided with a means for supporting a forcep blade tip for distracting the vertebrae from the damaged vertebra with a pair of forceps,b) a rigid elongate plate for interconnecting said pair of clamps having an opening provided at each opposite end and having a predetermined length between said openings which corresponds to the distance between said pair of clamps after distraction of the vertebrae from the damaged vertebra, andc) means for rigidly connecting together each of said clamps to said rigid elongate plate.
2 Assignments
0 Petitions
Accused Products
Abstract
This implant has in combination a pair of clamps (2) provided with spikes (3) and with screws (5) for fixing to two corresponding vertebrae (V2, V4) and notches (23) to support the tips of the blades of a pair of distraction forceps, a rigid plate (6) for interconnecting the two clamps (2) and whose ends are pierced with orifices (17) in which may engage threaded pieces (12) of the camps (2) and whose length (L) corresponds to the distance between the posterior orifices (9) of the clamps (2) after distraction of the vertebrae, and lastly nuts (7) for rigidly connecting together the plate (6) and the clamps (2). This implant has, in particular, the advantage of permitting distraction by the forceps bearing against the clamps instead of against the vertebrae, which was not possible with the previously known plates; in addition, it is compact while at the same time being sufficiently solid, and thus prevents any risk of rubbing against the aorta.
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Citations
12 Claims
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1. A vertebral implant for the anterior removal and a reconstruction of damaged vertebrae which comprises in combination:
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a pair of clamps, each provided with a means for fixing said clamp to a vertebra situated on either side of a damaged vertebra and provided with a means for supporting a forcep blade tip for distracting the vertebrae from the damaged vertebra with a pair of forceps, b) a rigid elongate plate for interconnecting said pair of clamps having an opening provided at each opposite end and having a predetermined length between said openings which corresponds to the distance between said pair of clamps after distraction of the vertebrae from the damaged vertebra, and c) means for rigidly connecting together each of said clamps to said rigid elongate plate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A vertebral implant for the anterior removal and reconstruction of damaged vertebrae which comprises in combination:
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a) a pair of clamps, each provided with a means for fixing said clamp to a vertebra situated on either side of a damaged vertebra and provided with a means for supporting a forcep blade tip for distracting the vertebrae from the damaged vertebra, said means for fixing said clamps to said vertebra comprising first and second screws, wherein each of said clamps is provided with first and second openings adapted for receiving said first and second screws respectively therethrough, said openings being adapted to enable said screws to be oriented in the vertebra in a desired direction, b) a rigid elongate plate for interconnecting said pair of clamps having an opening provided at each opposite end and having a predetermined length between said openings which corresponds to the distance between said pair of clamps after distraction of the vertebrae from the damaged vertebra, and c) means for rigidly connecting together said rigid elongate plate and said pair of clamps.
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12. A vertebral implant for the anterior removal and reconstruction of damaged vertebrae which comprises in combination:
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a) a pair of clamps, each provided with a means for fixing said clamp to a vertebra situated on either side of a damaged vertebra and provided with a means for supporting a forcep blade tip for distracting the vertebrae adjacent to the damaged vertebra, wherein each of said clamps has an anterior face for contacting against the associated vertebra which is provided with a convexity extending in a vertical direction along said face which complements the concavity of the vertebrae and a concavity extending in a horizontal direction along said face so that said clamps fit tightly against the anteroposterior convex lateral face of the vertebrae, b) a rigid elongate plate for interconnecting said pair of clamps having an opening provided at each opposite end and having a predetermined length between said openings which corresponds to the distance between said pair of clamps after distraction of the vertebrae from the damaged vertebra, and c) means for rigidly connecting together said rigid elongate plate and said pair of clamps.
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Specification