Implant with nested members and methods of use
First Claim
1. An implant positionable between first and second vertebral members, the implant comprising:
- a first member including a first sidewall that extends around and forms a first interior space, the first member also including a first chamber within the first interior space that is at least partially spaced away from the first sidewall;
a second member including a second sidewall that extends around and forms a second interior space, the second member also including a second chamber within the second interior space that is at least partially spaced away from the second sidewall;
a third member including a third sidewall that extends around and forms a third interior space, the third member also including a third chamber within the third interior space that is at least partially spaced away from the third sidewall;
the members positionable between collapsed and expanded orientations;
the collapsed orientation comprising the third member nested within the second interior space and the second member nested within the first interior space with the first, second, and third sidewalls overlapping in a triple ply;
the expanded orientation comprising the third member extending from the second member and the second member extending from the first member with the third sidewall being spaced apart from the first sidewall;
the first, second, and third chambers constructed to mate together to form an enclosed chamber.
1 Assignment
0 Petitions
Accused Products
Abstract
The application is directed to implants that are adjustable between collapsed and expanded orientations. The collapsed orientation includes a smaller height to facilitate insertion into the patient. The expanded orientation includes a larger height for spacing and/or supporting the vertebral members. The implants generally include three or more separate sections that are nested together in the collapsed orientation. The sections move outward away from each other in the expanded orientation. An expansion means may be operatively connected to one or more of the sections to move the implants between the orientations. Methods of use are also included for moving the implants between the collapsed and expanded orientations.
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Citations
22 Claims
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1. An implant positionable between first and second vertebral members, the implant comprising:
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a first member including a first sidewall that extends around and forms a first interior space, the first member also including a first chamber within the first interior space that is at least partially spaced away from the first sidewall; a second member including a second sidewall that extends around and forms a second interior space, the second member also including a second chamber within the second interior space that is at least partially spaced away from the second sidewall; a third member including a third sidewall that extends around and forms a third interior space, the third member also including a third chamber within the third interior space that is at least partially spaced away from the third sidewall; the members positionable between collapsed and expanded orientations; the collapsed orientation comprising the third member nested within the second interior space and the second member nested within the first interior space with the first, second, and third sidewalls overlapping in a triple ply; the expanded orientation comprising the third member extending from the second member and the second member extending from the first member with the third sidewall being spaced apart from the first sidewall; the first, second, and third chambers constructed to mate together to form an enclosed chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An implant positionable between first and second vertebral members, the implant comprising:
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a first member comprising a first contact surface to contact the first vertebral member and a first sidewall that extends from the first contact surface; a second member comprising a second sidewall positioned adjacent to the first member; and a third member comprising a second contact surface to contact the second vertebral member and a third sidewall that extends outward from the second contact surface and is positioned adjacent to the second member; the members being positionable between a collapsed orientation and an expanded orientation; the members including struts that are at least partially separated from the sidewalls and form an enclosed chamber; the collapsed orientation comprising the third member collapsed within the second member, and both the second and third members collapsed within the first member; the expanded orientation comprising the third member extending outward from the second member and the second member extending outward from the first member; a height measured between the first and second contact surfaces being greater in the expanded orientation than in the collapsed orientation. - View Dependent Claims (11, 12, 13, 14, 15)
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16. An implant positionable within first and second vertebral members, the implant comprising:
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a first member including a first contact surface to contact the first vertebral member and a first sidewall that forms a first interior space; a second member including a second contact surface to contact the second vertebral member and a second sidewall that forms a second interior space; and two intermediate members positioned between the first and second members and being in a telescoping arrangement; the members positionable in a collapsed orientation with the first member nested within the plurality of intermediate members and the intermediate members nested within the second member, and an expanded orientation with the first and second members extending outward away from the plurality of intermediate members; the members each include cross-sectional shapes that prevent rotation as the members move between the collapsed and expanded orientations; a height formed between the first and second contact surfaces being greater in the expanded orientation than in the collapsed orientation; each of the members including a strut that engage together and form a chamber that is smaller than the sidewalls and formed between the first and second contact surfaces, the chamber being enclosed to contain fluid to move the device from the collapsed orientation towards the expanded orientation. - View Dependent Claims (17, 18, 19)
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20. An implant positionable within first and second vertebral members, the implant comprising:
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a first member; a second intermediate member; a third member; the members including interior struts that are at least partially spaced away from exterior sidewalls, the interior struts nest together and form an enclosed chamber; a duct that extends through the exterior sidewall and the interior strut of one of the members and into the enclosed chamber for delivering a fluid into the enclosed chamber; the members being positionable between a collapsed orientation with a first height and an expanded orientation with a second height greater than the first height; the members forming a three-ply overlapping arrangement in the collapsed orientation; in the expanded orientation the first member overlapping the second intermediate member and the third member overlapping the second intermediate member and the first member spaced away from the third member in a non-overlap arrangement. - View Dependent Claims (21, 22)
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Specification