Cervical facet resurfacing implant
First Claim
Patent Images
1. A cervical facet resurfacing implant comprising:
- a superior implant having an articulating surface and a fixation surface and configured for secured placement on a resurfaced superior articular facet of a selected cervical vertebra; and
an inferior implant having an articulating surface and a fixation surface and configured for secured placement on a resurfaced inferior articular facet of a cervical vertebra immediately above the selected cervical vertebra such that the articulating surface of the inferior implant interacts with the articular surface of the superior implant.
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Abstract
The present invention relates to prostheses for treating spinal pathologies, and more specifically to a system and method for treating articulating surfaces of cervical vertebrae facet joints. The system includes a superior implant for placement on a superior articulating surface and an inferior implant for placement on an inferior articulating surface. In addition, described is a method for providing articulating surfaces for cervical vertebrae facet joint articular facets.
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Citations
37 Claims
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1. A cervical facet resurfacing implant comprising:
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a superior implant having an articulating surface and a fixation surface and configured for secured placement on a resurfaced superior articular facet of a selected cervical vertebra; and
an inferior implant having an articulating surface and a fixation surface and configured for secured placement on a resurfaced inferior articular facet of a cervical vertebra immediately above the selected cervical vertebra such that the articulating surface of the inferior implant interacts with the articular surface of the superior implant. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A facet implant comprising:
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a generally disk-shaped superior implant having an articulating surface and a fixation surface and being configured for placement on a resurfaced superior articular facet of a selected cervical vertebra, the superior implant having a tab extending from the generally disk-shaped portion of the superior implant, the tab being configured for secured attachment to the lateral mass of the selected vertebra; and
a generally disk-shaped inferior implant having an articulating surface and a fixation surface and being configured for placement on a resurfaced inferior articular facet of a cervical vertebra immediately above the selected cervical vertebra such that the articulating surface of the inferior implant interacts with the articular surface of the superior implant, the inferior implant having a tab extending from the generally disk-shaped portion of the inferior implant, the tab being configured for secured attachment to the inferior articular process of the cervical vertebra immediately above the selected vertebra. - View Dependent Claims (21, 22, 23, 24, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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25. A method for providing articulating surfaces for vertebrae facet joint articular facets of comprising:
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creating a space between a superior articular facet of a selected vertebra and an inferior articular facet of a vertebra immediately above the selected vertebra;
using a rasp to prepare an articulating surface of the inferior articular facet for an inferior implant;
using a rasp to prepare an articulating surface of the superior articular facet for a superior implant;
fixing the inferior implant on the inferior articular facet such that a fixation surface of the inferior implant interacts with the articulating surface of the inferior articular facet; and
fixing the superior implant on the superior articular facet such that a fixation surface of the superior implant interacts with the articulating surface of the superior articular facet;
wherein the articulating surface of the superior implant and the articulating surface of the inferior implant are configured to articulate with one another.
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Specification