Implants with helical supports and methods of use for spacing vertebral members
First Claim
1. An implant for spacing apart vertebral members comprising:
- an outer member comprising a first helical support that extends along an inner side of the outer member; and
an inner member arranged in a telescoping manner with the outer member, the inner member comprising a second helical support that extends along an outer side of the inner member;
the first and second helical supports wrapping around their respective members in different directions to bind together to prevent rotation;
the inner and outer members being axially movable in an outward direction to increase a height of the implant with the first and second helical supports engaging together to maintain the height.
1 Assignment
0 Petitions
Accused Products
Abstract
The present application is directed to implants with inner and outer members positioned in a telescoping arrangement. The members may include helical supports to selectively adjust the height of the implant. The helical supports offer a large contact surface to prevent inadvertent reduction of the length due to application of a compressive force. In some embodiments, the helical support members may be shaped to facilitate movement of the members to increase the height. The shape may further prevent movement that would decrease the height. Some embodiments may also prevent relative rotation of the members. In use, the inner and outer members are moved apart to adjust the height of the implant to space apart the vertebral members. The members may further be constructed to prevent the members from moving together after insertion between the vertebral members.
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Citations
20 Claims
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1. An implant for spacing apart vertebral members comprising:
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an outer member comprising a first helical support that extends along an inner side of the outer member; and an inner member arranged in a telescoping manner with the outer member, the inner member comprising a second helical support that extends along an outer side of the inner member; the first and second helical supports wrapping around their respective members in different directions to bind together to prevent rotation; the inner and outer members being axially movable in an outward direction to increase a height of the implant with the first and second helical supports engaging together to maintain the height. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An implant for spacing apart vertebral members comprising:
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inner and outer members arranged in a telescoping manner; and helical supports extending along the inner and outer members and being shaped to prevent relative rotation between the inner and outer members; the inner and outer members being axially movable in an outward direction to increase a height of the implant with the helical supports of the inner and outer members engaging together to maintain the height. - View Dependent Claims (11, 12, 13)
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14. An implant for spacing apart vertebral members comprising:
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an inner member comprising first and second helical supports each extending outward from an outer surface with a first helical cut extending in a first direction and a second helical cut extending in a second direction; and an outer member including a hollow interior sized to receive the inner member, the outer member including a inner surface with third and fourth helical supports extending outward from the inner surface and sized to engage with the first and second helical supports. - View Dependent Claims (15, 16, 17, 18)
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19. An implant for spacing apart vertebral members comprising:
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a first member comprising a first helical support that extend over a length of the first member, the first member further comprising a slot; a second member comprising a second helical support and an extension; the first and second members in a telescoping arrangement with the helical supports engaging and disengaging during axial movement and the extension is sized to fit within the slot to prevent relative rotation between the first and second members. - View Dependent Claims (20)
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Specification