Buttressing device usable in a vertebral prosthesis
First Claim
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1. A device for maintaining the normal spacing between two vertebrae defining, in the vertebral column, the ends of a cavity resulting from the removal of at least a part of a vertebra, said device comprising:
- buttressing means including a connecting piece in the form of an elongated nut and a pair of threaded rods engaging said nut, each rod having a free end extending from said nut, said rods being movable with respect to each other in the connecting piece in a direction parallel to the axis of the vertebral column, andanchorage means including a base provided with a plurality of anchorage points, said base being attached to each of said free ends for anchoring said device between said vertebrae,at least one of said bases being removably attached to its associated free end by connecting means including a tenon on one of said free end and said associated base and a mortice on the other of said free end and said base, said mortice and said tenon having corresponding cross-sections such that said tenon fits into said mortice.
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Abstract
A device for maintaining the normal spacing between two vertebrae defining, in the vertebral column, the ends of a cavity resulting from the removal of at least a part of a vertebra comprises two bases each having means for anchorage in one of said end vertebrae; and adjustable buttressing means connecting said bases together.
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Citations
8 Claims
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1. A device for maintaining the normal spacing between two vertebrae defining, in the vertebral column, the ends of a cavity resulting from the removal of at least a part of a vertebra, said device comprising:
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buttressing means including a connecting piece in the form of an elongated nut and a pair of threaded rods engaging said nut, each rod having a free end extending from said nut, said rods being movable with respect to each other in the connecting piece in a direction parallel to the axis of the vertebral column, and anchorage means including a base provided with a plurality of anchorage points, said base being attached to each of said free ends for anchoring said device between said vertebrae, at least one of said bases being removably attached to its associated free end by connecting means including a tenon on one of said free end and said associated base and a mortice on the other of said free end and said base, said mortice and said tenon having corresponding cross-sections such that said tenon fits into said mortice. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification