Implant with protected fusion zones

Patent metadata

Field	Value
Publication number	US-12042399-B2
Application number	US-202217935276-A
Country	US
Kind code	B2
Filing date	Sep 26, 2022
Priority date	Oct 25, 2016
Publication date	Jul 23, 2024
Grant date	Jul 23, 2024

Abstract

An implant may include a body having a first portion and a second portion and a structural member having a central member curve. In addition, the structural member may be exposed on an outer surface of the implant. Further, the central member curve may include a winding segment, and the winding segment of the central member curve may wind around a fixed path extending from the first portion of the body to the second portion of the body. Also, the central member curve may make one or more full turns around the fixed path. And, the structural member may have a member diameter at the winding segment, wherein the winding segment has a winding diameter corresponding with the full turn around the fixed path and the member diameter is greater than the winding diameter.

First claim

What is claimed is:

1. An intervertebral implant, comprising:
a bone contacting outer member having an elongate geometry; and
a support member having an elongate geometry;
wherein the support member is attached to the outer member;
wherein the outer member has a central member curve; and
wherein the central member curve is non-linear;
wherein the outer member has a bone contacting outer surface configured to contact a vertebra;
wherein the geometry of the outer member provides a first distal surface region, a first proximal surface region and a second distal surface region, wherein the first distal surface region, the first proximal surface region and the second distal surface region are all oriented outwardly on a superior side or an inferior side of the implant; and
wherein the support member attaches to the outer member at a portion of the outer member that includes the first proximal surface region.

2. The implant according to claim 1 , wherein the support member has a curved path that includes an arch-like path.

3. The implant according to claim 1 , wherein the outer member has a greater length than the support member.

4. The implant according to claim 1 , wherein the geometry of the outer member provides a third distal surface region and a second proximal surface region disposed between the second distal surface region and the third distal surface region.

5. The implant according to claim 4 , wherein the third distal surface region and the second proximal surface region are oriented outwardly on the same side of the implant as the first distal surface region.

6. The implant according to claim 1 , wherein the outer member is configured to engage a vertebra so as to form a space for protecting bone growth between the vertebra and the proximal surface region.

7. The implant according to claim 6 , wherein the implant has an open interior and wherein the implant is configured to receive a bone growth promoting material such that the bone growth promoting material can extend continuously through the open interior of the implant and into the space for protecting bone growth between the vertebra and the proximal surface region.

8. The implant according to claim 1 , wherein the non-linear central member curve has a geometry such that the outer member has an arch-like geometry.

9. The implant according to claim 1 , wherein non-linear central member curve has a geometry such that the outer member has generalized helical geometry.

10. An implant, comprising:
a body;
a bone contacting outer member having an elongate, non-linear geometry, the outer member attached to the body; and
a support member having an elongate geometry, the support member attached to the body and attached to the outer member;
the outer member having an outwardly facing surface portion;
wherein the support member is integrally formed with the outer member on an internal side of the outer member opposite the outwardly facing surface portion of the outer member.

11. The implant according to claim 10 , wherein the non-linear geometry of the outer member includes an arch-like geometry.

12. The implant according to claim 10 , wherein the non-linear geometry of the outer member includes a generalized helical geometry.

13. The implant according to claim 10 , wherein the non-linear geometry of the outer member forms a first peak extending outwardly, a second peak extending outwardly, and a valley extending inwardly, with the valley forming a space for protecting bone growth that is located between the first peak and the second peak.

14. An implant, comprising:
a bone contacting outer member having an elongate, non-linear geometry; and
a support member having an elongate geometry;
wherein the support member is attached to the outer member;
wherein the outer member has a bone contacting outer surface;
wherein the non-linear geometry of the outer member forms a first peak extending outwardly, a second peak extending outwardly, and a valley extending inwardly between the first peak and the second peak; and
wherein the support member attaches to the outer member at a portion of the outer member that includes the valley.

15. The implant according to claim 14 , wherein the valley forms a space for protecting bone growth.

16. The implant according to claim 15 , wherein the implant has an open interior and wherein the implant is configured to receive a bone growth promoting material such that the bone growth promoting material can extend continuously through the open interior of the implant and into the space for protecting bone growth between the vertebra and the valley of the outer member.

17. The implant according to claim 14 , wherein the non-linear geometry of the outer member provides a third peak and a second valley disposed between the second peak and the third peak.

18. The implant according to claim 14 , wherein the non-linear geometry of the outer member includes an arch-like geometry.

19. The implant according to claim 14 , wherein non-linear geometry of the outer member includes a generalized helical geometry.

20. The implant according to claim 14 , wherein the support member is integrally formed with the outer member on an internal side of the outer member opposite the bone contacting outer surface of the outer member.

Assignees

• Inst Musculoskeletal Science & Education Ltd

Inventors

• Mcshane Iii Edward J
• Ryan Christopher J

Classifications

• A61F2002/30322

  differing in surface structures · CPC title

• A61F2002/30289

  helically-coiled · CPC title

• A61F2/4611

  of spinal prostheses · CPC title

• A61F2002/30028

  differing in tissue ingrowth capacity, e.g. made from both ingrowth-promoting and ingrowth-preventing parts · CPC title

• A61F2/4455 Primary

  for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages (intervertebral discs A61F2/442) · CPC title