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US 6,758,862 B2Granted
Vertebral body and disc space replacement devices
AssigneeSDGI Holdings, Inc.
InventorsBret M. Berry, Eric C. Lange
Life of this patent
Estimating the term…
Abstract
A vertebral replacement body device for supporting adjacent vertebrae includes a connecting member having an upper member and a lower member engaged thereto at opposite ends thereof. The vertebral replacement body device can have a chamber extending therethrough for fusion of the supported vertebrae.
Claims56
A vertebral replacement body device, comprising:
- an upper member having a first end for engaging an endplate of an upper vertebral body and an opposite second end, said upper member having a wall defining a chamber extending between said first end and said second end;
- a lower member having a first end for engaging an endplate of a lower vertebral body and an opposite second end, said lower member having a wall defining a chamber extending between said first end and said second end;
- and
- a connecting member positionable between said upper member and said lower member, said connecting member having a chamber extending therethrough and including a body having an upper end and a lower end, said connecting member further including an upper extension at said upper end of said body and a lower extension at said lower end of said body, said upper extension including a flexible upper engaging member having a projection engageable with said wall of said upper member and said lower extension including a flexible lower engaging member having a projection engageable with said wall of said lower member.
1 more element
The device of claim wherein:
- said second end of said upper member includes a series of flattened end surfaces spaced therearound for bearing against said upper end surface of said connecting member;
- and
- said second end of said lower member includes a series of flattened end surfaces spaced therearound for bearing against said lower end surface of said connecting member.
A vertebral replacement body device, comprising:
- an upper member having a first end for engaging an endplate of an upper vertebral body and an opposite second end, said upper member defining a chamber extending between said first end and said second end;
- a lower member having a first end for engaging an endplate of a lower vertebral body and an opposite second end, said lower member defining a chamber extending between said first end and said second end;
- a connecting member between said upper member and said lower member, said connecting member including a chamber extending therethrough and including a body having an upper end and a lower end, said connecting member further including an upper extension at said upper end of said body and a lower extension at said lower end of said body, said upper extension being positionable in said chamber of said upper member such that said upper member is non-rotatably engaged with said connecting member and said lower extension being positionable in said chamber of said lower member such that said lower member is non-rotatably engaged with said connecting member, wherein:
- said upper extension includes a flexible engaging member having a projection engageable with an opening in a wall of said upper member;
- and
- said lower extension includes a flexible engaging member having a projection engageable with an opening in a wall of said lower member.
3 more elements
The device of 12, further comprising bone growth material in said chamber of each of said upper member, said connecting member and said lower member.
The device of claim said bone growth material is provided in a carrier having a form selected from the group consisting of:
- a sponge, a block, folded sheet, putty, and paste.
The device of wherein said connecting member includes a chamber extending therethrough and said body of said connecting member includes a wall extending around said chamber, said wall including a plurality of openings therethrough in communication with said chamber of said connecting member.
A vertebral replacement body device, comprising:
- an upper member having a first end for engaging an endplate of an upper vertebral body and an opposite second end, said upper member having a wall defining a chamber extending between said first end and said second end;
- a lower member having a first end for engaging an endplate of a lower vertebral body and an opposite second end, said lower member having a wall defining a chamber extending between said first end and said second end;
- a connecting member positionable between said upper member and said lower member, said connecting member having a body with an upper end and a lower end, said connecting member further including an upper extension at said upper end of said body and a lower extension at said lower end of said body, wherein said upper extension includes a flexible upper engaging member having a projection engageable with said wall of said upper member and said lower extension includes a flexible lower engaging member having a projection engageable with said wall of said lower member, wherein:
- said upper end of said body of said connecting member includes an upper end surface adjacent to said upper extension;
- said lower end of said body of said connecting member includes an end surface adjacent to said lower extension;
- said second end of said upper member includes an end surface bearing against said upper end surface of said connecting member;
- and
- said second end of said lower member includes an end surface bearing against said lower end surface of said connecting member.
5 more elements
The device of claim therein said second end of said upper member includes a series of flattened end surfaces spaced therearound;
- and
- said second end of said lower member includes a series of flattened end surfaces spaced therearound.
A vertebral replacement body device, comprising:
- an upper member having a first end for engaging an endplate of an upper vertebral body and an opposite second end, said upper member having a wall defining a chamber extending between said first end and said second end;
- a lower member having a first end for engaging an endplate of a lower vertebral body and an opposite second end, said lower member having a wall defining a chamber extending between said first end and said second end;
- a connecting member positionable between said upper member and said lower member, said connecting member having a body with an upper end and a lower end, said connecting member further including an upper extension at said upper end of said body and a lower extension at said lower end of said body, wherein:
- said upper end of said body of said connecting member includes an upper end surface adjacent to said upper extension;
- said lower end of said body of said connecting member includes an end surface adjacent to said lower extension;
- said second end of said upper member includes an end surface bearing against said upper end surface of said connecting member;
- said second end of said lower member includes an end surface bearing against said lower end surface of said connecting member;
- and
- a sleeve about said connecting member and at least a portion of said upper member and said lower member, said sleeve engaging at least said upper member and said lower member to maintain said end surfaces of said upper and lower members in contact with a respective one of said upper and lower end surfaces of said connecting member.
6 more elements
A vertebral replacement body device, comprising:
- an upper member having a first end for engaging an endplate of an upper vertebral body and an opposite second end, said upper member having a wall defining a chamber extending between said first end and said second end;
- a lower member having a first end for engaging an endplate of a lower vertebral body and an opposite second end, said lower member having a wall defining a chamber extending between said first end and said second end;
- a connecting member positionable between said upper member and said lower member, said connecting member including a body having a chamber extending between an upper end and a lower end of said body, wherein:
- said connecting member and said upper member are telescopically and non-rotatably positionable with respect to one another for placement of said second end of said upper member against said upper end of said connecting member;
- said connecting member and said lower member are telescopically and non-rotatably positionable with respect to one another for placement of said second end of said lower member against said upper end of said connecting member;
- and
- said connecting member further includes an upper extension at said upper end of said body and a lower extension at said lower end of said body, said upper extension including a flexible upper engaging member having a projection engageable with said wall of said upper member and said lower extension including a flexible lower engaging member having a projection engageable with said wall of said lower member.
4 more elements
A method for assembling a vertebral replacement body device, comprising:
- providing a connecting member having a body extending between an upper end and a lower end;
- telescopically and non-rotatably engaging an upper member to the upper end of the connecting member with an end of the upper member in contact with the upper end of the body;
- and
- telescopically and non-rotatably engaging a lower member to the lower end of the connecting member with an end of the lower member in contact with the lower end of the body, wherein telescopically and non-rotatably engaging the upper member to the connecting member and telescopically and non-rotatably engaging the lower member to the connecting member includes placing a sleeve about the upper member, the connecting member and the lower member.
1 more element
Dependencies are inferred from the claim text.