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 first sidewalls that extend around and form a first interior space;
a second member including second sidewalls that extend around and form a second interior space;
a third member including third sidewalls that extend around and form a third interior space;
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.
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
27 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 first sidewalls that extend around and form a first interior space; a second member including second sidewalls that extend around and form a second interior space; a third member including third sidewalls that extend around and form a third interior space; 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. - View Dependent Claims (2, 3, 5, 6, 7, 8, 9)
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4. The implant of 1, wherein the first sidewall includes a receiver and the second sidewall includes a rib, the rib sliding within the receiver while the members move between the collapsed and expanded orientations.
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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 first sidewalls that extend from the first contact surface; a second member comprising second sidewalls that are positioned adjacent to the first member; and a third member comprising a second contact surface to contact the second vertebral member and third sidewalls that extend outward from the second contact surface and are positioned adjacent to the second member; the members being positionable between a collapsed orientation and an expanded orientation; 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, 16)
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17. 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; a height formed between the first and second contact surfaces being greater in the expanded orientation than in the collapsed orientation. - View Dependent Claims (18, 19, 20, 21)
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22. 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 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 (23)
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24. A method of spacing first and second vertebral members, the method comprising the steps of:
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positioning first, second, and third members in a collapsed orientation with the third member nested in the second member which itself is nested in the first member; inserting the members between the first and second vertebral members; moving the members towards an expanded orientation with the third member moving outward from the second member, and moving the second member outward from the first member; and contacting a first contact surface on the first member against the first vertebral member and a second contact surface on the third member against the second vertebral member. - View Dependent Claims (25, 26, 27)
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Specification