IP Library › Granted Patent US 8,663,331

Granted Patent B2

US 8,663,331 · App. 11/947,884 · Granted Mar 4, 2014

Maximum support TLIF implant

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Quick Facts

Patent No.: US 8,663,331
App. No.: 11/947,884
Granted: Mar 4, 2014
Kind: B2

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Abstract

A transforaminal lumbar interbody fusion (TLIF) implant to be placed in an intervertebral space includes a front member and a back member. The front member includes a first end having a hinge, a second end, a pair of lateral portions, a top wall and a bottom wall, an opening configured through the pair of lateral portions and a plurality of openings in each of the top wall and the bottom wall. The back member includes a first end having an arcuately-shaped attachment head comprising a receptor dimensioned and configured to accommodate the hinge of the front member, a second end, a pair of lateral portions, a top wall, a bottom wall and an opening configured through the pair of lateral portions. The top wall and the bottom wall of the back member further comprise a plurality of openings.

Claims (75)

1. A transforaminal lumbar interbody fusion (TLIF) implant to be placed in an intervertebral space, said TLIF implant comprising:

a front member comprising:

a first end comprising a uniformly monolithic cylindrical hinge post;

a second end positioned opposite to said first end and having a tapered configuration;

a pair of lateral portions attached to each of said first end and said second end;

an opening configured through said pair of lateral portions;

a top wall attached to each of said first end, said second end, and said pair of lateral portions;

a bottom wall positioned opposite to said top wall and attached to each of said first end, said second end, and said pair of lateral portions; and

a plurality of openings in each of said top wall and said bottom wall;

a back member pivotally attached to said front member; wherein said back member comprises:

a first end having an arcuately-shaped attachment head comprising a receptor dimensioned and configured to accommodate said hinge of said front member;

a second end positioned opposite to said first end and having a tapered configuration, wherein a tip of said tapered configuration comprises a hole recess;

a pair of lateral portions attached to each of said first end and said second end of said back member;

an opening configured through said pair of lateral portions of said back member;

a top wall attached to each of said first end, said second end, and said pair of lateral portions of said back member;

a bottom wall positioned opposite to said top wall and attached to each of said first end, said second end, and said pair of lateral portions of said back member; and

a plurality of openings in each of said top wall and said bottom wall.

2. The TLIF implant of claim 1 , wherein said back member comprises a plurality of slots.

3. The TLIF implant of claim 2 , wherein said plurality of slots comprises a top pair of slots in said top wall.

4. The TLIF implant of claim 3 , wherein said plurality of slots comprises a bottom pair of slots in said bottom wall.

5. The TLIF implant of claim 4 , wherein a rear slot of said top pair of slots in said top wall and a rear slot of said bottom pair of slots in said bottom wall merge.

6. The TLIF implant of claim 1 , wherein said first end of said back member comprises a hole recess adjacent to said attachment head of said back member and aligned with the hole recess of said second end of said back member.

7. The TLIF implant of claim 2 , wherein said plurality of slots accommodate impactions to turn said TLIF implant.

8. A device for providing intervertebral support, said device comprising:

a first member comprising:

a first end comprising a uniformly cylindrical hinge;

a curved second end positioned opposite to said first end and having a tapered configuration;

a pair of lateral portions attached to each of said first end and said second end, wherein one of the lateral portions comprises an arcuately-shaped cut out region comprising a substantially uniform and flat surface and said hinge;

an opening configured through said pair of lateral portions, wherein a length of said opening is at least equal to half of an overall length of said first member, and wherein said opening is adjacent to said arcuately-shaped cut out region;

a top wall attached to each of said first end, said second end, and said pair of lateral portions;

a bottom wall positioned opposite to said top wall and attached to each of said first end, said second end, and said pair of lateral portions; and

a plurality of elongated openings in each of said top wall and said bottom wall, wherein the openings in said top wall are aligned with the openings in said bottom wall;

a second member pivotally attached to said first member; wherein said second member comprises:

a first end having an arcuately-shaped attachment head corresponding to said arcuately-shaped cut out region of said first member, wherein said attachment head comprises a receptor dimensioned and configured to pivotally attach to said hinge of said first member;

a second end positioned opposite to said first end and having a tapered configuration, wherein a tip of said tapered configuration comprises a hole recess positioned parallel to a longitudinal axis of said second member;

a first lateral portion attached to each of said first end and said second end of said second member;

a second lateral portion positioned opposite to said first lateral portion and attached to each of said first end and said second end of said second member;

an opening configured through said first lateral portion and said second lateral portion of said second member;

a top wall attached to each of said first end, said second end, said first lateral portion and said second lateral portion of said second member;

a bottom wall positioned opposite to said top wall and attached to each of said first end, said second end, said first lateral portion and said second lateral portion of said second member; and

a plurality of openings in each of said top wall and said bottom wall, wherein said openings in said top wall are aligned with said openings in said bottom wall,

wherein a first lateral side of said attachment head is offset from an edge of said first lateral portion of said second member, and

wherein a second lateral side of said attachment head is planar with an edge of said second lateral portion of said second member.

9. The device of claim 8 , wherein said second member comprises a plurality of slots.

10. The device of claim 9 , wherein said plurality of slots comprises a top pair of slots in said top wall and a bottom pair of slots in said bottom wall.

11. The device of claim 10 , wherein a rear slot of said top pair of slots in said top wall and a rear slot of said bottom pair of slots in said bottom wall merge.

12. The device of claim 11 , wherein said first end of said second member comprises a hole recess adjacent to said attachment head of said second member and aligned with the hole recess of said second end of said second member.

13. The device of claim 8 , wherein said plurality of slots accommodate impactions to turn said device.

14. A device for providing intervertebral support, said device comprising:

a first member comprising:

a first end comprising a monolithic cylindrical hinge;

a curved second end positioned opposite to said first end and having a tapered configuration;

a pair of lateral portions attached to each of said first end and said second end, wherein one of the lateral portions comprises an arcuately-shaped cut out region comprising said hinge;