Controlled artificial intervertebral disc implant
First Claim
1. An articulating intervertebral implant for implantation between first and second vertebrae, the implant comprising:
- a first endplate having a first inner surface and a first outer surface for engaging the first vertebra;
a second endplate having a second inner surface and a second outer surface for engaging the second vertebra;
a cover plate coupled to the first endplate, the cover plate including an inner opening;
a first insert member adapted to be received within the inner opening of the cover plate, the first insert member having a first articulating surface operatively associated with the second endplate so that the first and second endplates can articulate with respect to each other; and
a spring component located between the first insert member and the first endplate, wherein the spring component is a leaf spring.
4 Assignments
0 Petitions
Accused Products
Abstract
The invention relates to an artificial intervertebral disc for placement between adjacent vertebrae. The artificial intervertebral disc is preferably designed to restore disc height and natural disc curvature, allow for a natural range of motion, absorb shock and provide resistance to motion and axial compression. Furthermore, the intervertebral disc may be used in the cervical, the thoracic, or the lumbar regions of the spine. The artificial intervertebral disc may include either singularly or in combination: an interior including at least one spring member preferably incorporating a arcuate surface member, a flexible core, the flexible core preferably being a slotted core, a ring spring, a winged leaf spring, or a leaf spring, or The articulating member preferably being attached to one of the endplate by an intermediate shock absorbing element.
391 Citations
40 Claims
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1. An articulating intervertebral implant for implantation between first and second vertebrae, the implant comprising:
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a first endplate having a first inner surface and a first outer surface for engaging the first vertebra; a second endplate having a second inner surface and a second outer surface for engaging the second vertebra; a cover plate coupled to the first endplate, the cover plate including an inner opening; a first insert member adapted to be received within the inner opening of the cover plate, the first insert member having a first articulating surface operatively associated with the second endplate so that the first and second endplates can articulate with respect to each other; and a spring component located between the first insert member and the first endplate, wherein the spring component is a leaf spring. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. An articulating intervertebral implant for implantation between first and second vertebrae, the implant comprising:
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a first endplate having a first inner surface and a first outer surface for engaging the first vertebra; a second endplate having a second inner surface and a second outer surface for engaging the second vertebra; a cover plate coupled to the first endplate, the cover plate including an inner opening; a first insert member adapted to be received within the inner opening of the cover plate, the first insert member having a first articulating surface operatively associated with the second endplate so that the first and second endplates can articulate with respect to each other; a second insert member located between the second endplate and the first insert member, the second insert member having a second articulating surface for contacting the first articulating surface formed on the first insert member; and a spring component located between the first insert member and the first endplate.
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24. An articulating intervertebral implant for implantation between first and second vertebrae, the implant comprising:
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a first endplate having a first inner surface and a first outer surface for engaging the first vertebra; a second endplate having a second inner surface and a second outer surface for engaging the second vertebra; a cover plate coupled to the first endplate, the cover plate including an inner opening; a first insert member adapted to be received within the inner opening of the cover plate, the first insert member having a first articulating surface; a second insert member located between the second endplate and the first insert member, the second insert member having a second articulating surface for contacting the first articulating surface formed on the first insert member; a spring component located between the first insert member and the first endplate so that the first and second endplates can axially move with respect to one another. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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Specification