IMPLANT WITH A DIAGONAL INSERTION AXIS

• US 20190038428A1
• Filed: 01/31/2018
• Published: 02/07/2019
• Est. Priority Date: 04/29/2015
• Status: Active Grant

• Current Assignee: The Institute of Musculoskeletal Science & Education
• Original Assignee: Institute For Musculoskeletal Science and Education Limited
• Inventors: Stauffer, Megan A., Ryan, Christopher J., McShane, III, Edward J., Nyahay, Joseph M., Bishop, Sean S.
• Granted Patent: US 10,709,570 B2
• Time in Patent Office: Days
• CPC Class Codes: A61F 2/30771 applied in original prostheses, e.g. holes or grooves
• CPC Class Codes: A61F 2/442 Intervertebral or spinal discs, e.g. resilient non-disc-shaped intervertebral inflatable pockets A61F2/441; non-disc-shaped intervertebral fusion implants A61F2/4455
• CPC Class Codes: A61F 2/4455 for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages intervertebral discs A61F2/442
• CPC Class Codes: A61F 2002/30011 differing in porosity
• CPC Class Codes: A61F 2002/30289 helically-coiled
• CPC Class Codes: A61F 2002/30593 hollow
• CPC Class Codes: A61F 2002/30772 Apertures or holes, e.g. of circular cross section
• CPC Class Codes: A61F 2002/30774 internally-threaded
• CPC Class Codes: A61F 2002/3092 having an open-celled or open-pored structure
• CPC Class Codes: A61F 2002/3093 for promoting ingrowth of bone tissue
• CPC Class Codes: A61F 2002/30957 using a positive or a negative model, e.g. moulds
• CPC Class Codes: A61F 2002/30985 using three dimensional printing [3DP]

Abstract

An implant for insertion into a spine is configured with a body and a plurality of bone contacting elements. The implant is configured with an insertion axis that is diagonal to a lateral axis and to a posterior-anterior axis. The diagonal insertion axis allows for insertion of the implant using an oblique lumbar interbody fusion procedure.

Claims

1. An implant, comprising:

a body comprised of a peripheral structure;

the body further comprising an opening for receiving part of an insertion device;

a plurality of bone contacting elements attached to the body;

wherein the peripheral structure is further comprised of a first lateral portion, a second lateral portion, an anterior portion and a posterior portion;

wherein the first lateral portion and the anterior portion are joined at a first corner portion of the peripheral structure and wherein the second lateral portion and the posterior portion are joined at a second corner portion of the peripheral structure; and

wherein the opening is disposed in the first corner portion of the peripheral structure.

2. The implant according to claim 1, wherein the opening has a central axis and wherein the central axis extends in a direction oriented between the first corner portion and the second corner portion.

3. The implant according to claim 1, wherein a posterior-anterior axis of the implant extends from the posterior portion to the anterior portion of the peripheral structure, and wherein the central axis of the opening is oriented at an oblique angle with respect to the posterior-anterior axis.

4. The implant according to claim 1, wherein a lateral axis of the implant extends from a first lateral side to a second lateral side of the peripheral structure, and wherein the central axis of the opening is oriented at an oblique angle with respect to the lateral axis.

5. The implant according to claim 1, wherein the implant further includes a support beam, and wherein the support beam extends from the first corner portion to the second corner portion.

6. The implant according to claim 5, wherein the support beam is parallel with a central axis of the opening.

7. An implant, comprising:

a body comprised of a peripheral structure and a support beam;

a plurality of bone contacting elements attached to the body;

wherein the peripheral structure is further comprised of a first lateral portion, a second lateral portion, an anterior portion and a posterior portion;

wherein the first lateral portion and the anterior portion are joined at a first corner portion of the peripheral structure and wherein the second lateral portion and the posterior portion are joined at a second corner portion of the peripheral structure; and

wherein the support beam has a first end attached to the first corner portion of the peripheral structure and wherein the support beam has a second end attached to the second corner portion of the peripheral structure.

8. The implant according to claim 7, wherein the implant includes at two support beams and wherein the two support beams are arranged in parallel.

9. The implant according to claim 7, wherein the implant includes three support beams and wherein each support beam is in contact with an end of at least one of the plurality of bone contacting elements.

10. The implant according to claim 7, wherein the support beam is oriented along a transverse plane of the implant.

11. The implant according to claim 7, wherein the body includes an opening for receiving part of an insertion device and wherein the opening is disposed in the first corner portion.

12. The implant according to claim 11, wherein the opening has a central axis and wherein the central axis of the opening is aligned with the central beam.

13. The implant according to claim 11, wherein a posterior-anterior axis of the implant extends from the posterior portion to the anterior portion of the peripheral structure, and wherein the support beam is oriented at an oblique angle with respect to the posterior-anterior axis.

14. An implant, comprising:

a body comprised of a peripheral structure;

a plurality of bone contacting elements attached to the body;

wherein the peripheral structure is further comprised of a first lateral portion, a second lateral portion, an anterior portion and a posterior portion;

wherein the first lateral portion and the anterior portion are joined at a first corner portion of the peripheral structure and wherein the second lateral portion and the posterior portion are joined at a second corner portion of the peripheral structure;

wherein the second lateral portion and the anterior portion are joined at a third corner portion of the peripheral structure and wherein the first lateral portion and the posterior portion are joined at a fourth corner portion of the peripheral structure;

the plurality of bone contacting elements presenting a curved surface on a superior side of the device; and

wherein the curved surface curves from the third corner portion to the fourth corner portion.

15. The implant according to claim 14, wherein the implant includes an opening for receiving part of an insertion device.

16. The implant according to claim 15, wherein the opening is disposed in the first corner portion.

17. The implant according to claim 14, wherein the curved surface is a convex surface.

18. The implant according to claim 14, wherein the convex surface is curved in a first direction and a second direction, the second direction being perpendicular to the first direction.

19. The implant according to claim 18, wherein the first direction is associated with a direction of the implant that is oriented from the first corner portion to the second corner portion and wherein the second direction is associated with a direction of the implant that is oriented from the third corner portion to the fourth corner portion.

20. The implant according to claim 19, wherein the convex surface has greater curvature along the second direction than along the first direction.