SPINAL IMPLANT SYSTEM AND METHOD

• US 20180333272A1
• Filed: 05/22/2017
• Published: 11/22/2018
• Est. Priority Date: 05/22/2017
• Status: Active Grant

• Current Assignee: Warsaw Orthopedic Incorporated (Medtronic Plc)
• Original Assignee: Warsaw Orthopedic Incorporated (Medtronic Plc)
• Inventors: Mirda, James M., Blackwell, Jonathan E., Hynes, Richard A.
• Granted Patent: US 10,624,760 B2
• Time in Patent Office: Days
• CPC Class Codes: A61B 2090/3937 Visible markers
• CPC Class Codes: A61B 2090/3966 Radiopaque markers visible in an X-ray image
• CPC Class Codes: A61B 34/20 Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
• CPC Class Codes: A61B 6/487 involving fluoroscopy
• CPC Class Codes: A61F 2/30771 applied in original prostheses, e.g. holes or grooves
• 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 2/447 substantially parallelepipedal, e.g. having a rectangular or trapezoidal cross-section
• CPC Class Codes: A61F 2/4603 for insertion or extraction of endoprosthetic joints or of accessories thereof
• CPC Class Codes: A61F 2/4611 of spinal prostheses
• CPC Class Codes: A61F 2002/30056 differing in radiographic density
• CPC Class Codes: A61F 2002/3008 radio-opaque, e.g. radio-opaque markers
• CPC Class Codes: A61F 2002/30143 hexagonal
• CPC Class Codes: A61F 2002/30266 wedge-shaped parallelepipeds
• CPC Class Codes: A61F 2002/30281 wedge-shaped
• CPC Class Codes: A61F 2002/30387 Dovetail connection
• CPC Class Codes: A61F 2002/30398 Sliding
• CPC Class Codes: A61F 2002/30428 made by inserting a protrusion into a slot
• CPC Class Codes: A61F 2002/30538 for adjusting angular orientation
• CPC Class Codes: A61F 2002/30583 filled with hardenable fluid, e.g. curable in-situ
• CPC Class Codes: A61F 2002/30593 hollow
• CPC Class Codes: A61F 2002/30777 : Oblong apertures
• CPC Class Codes: A61F 2002/30784 : Plurality of holes
• CPC Class Codes: A61F 2002/30785 : parallel
• CPC Class Codes: A61F 2002/3082 : Grooves
• CPC Class Codes: A61F 2002/30836 : knurled
• CPC Class Codes: A61F 2002/30904 : serrated profile, i.e. saw-toothed
• CPC Class Codes: A61F 2002/3092 : having an open-celled or open-pored structure
• CPC Class Codes: A61F 2002/30922 : Hardened surfaces
• CPC Class Codes: A61F 2002/3093 : for promoting ingrowth of bone tissue
• CPC Class Codes: A61F 2002/30962 : using stereolithography
• CPC Class Codes: A61F 2002/4628 : with linear motion along or rotating motion about an axis transverse to the instrument axis or to the implantation direction, e.g. clamping
• CPC Class Codes: A61F 2002/4629 : connected to the endoprosthesis or implant via a threaded connection

Abstract

An interbody implant includes an implant body extending between an anterior surface and a posterior surface. The implant body includes a first vertebral engaging surface and a second vertebral engaging surface. At least one of the vertebral engaging surfaces defines a cavity configured for disposal of bone growth detectable via medical imaging. Systems, spinal constructs, surgical instruments and methods are disclosed.

Claims

1. An interbody implant comprising:

an implant body extending between an anterior surface and a posterior surface, and including a first vertebral engaging surface and a second vertebral engaging surface, the implant body defining a first groove and a second groove, the grooves each extending into the first vertebral engaging surface without extending through the second vertebral engaging surface, the second groove extending transverse to the first groove to intersect and communicate with the first groove, the grooves each being configured for disposal of bone growth detectable via medical imaging.

4. An interbody implant as recited in claim 1, wherein the implant body defines at least one opening that comprises radiographic visual indicia of disposal of the interbody implant in a selected alignment with tissue.

5. An interbody implant as recited in claim 4, wherein the at least one opening extends through a thickness of the implant body such that in an orthogonal alignment orientation of the interbody implant with tissue the opening is radiographically detectable and in a non-aligned orientation the opening is radiographically non-detectable.

6. An interbody implant as recited in claim 1, wherein the implant body defines a recess extending into the posterior surface, the recess extending parallel to the anterior surface such that in an orthogonal alignment orientation of the interbody implant with tissue the recess is radiographically detectable and in a non-aligned orientation the recess is radiographically non-detectable.

8. An interbody implant as recited in claim 1, wherein one or more of the surfaces include a honeycomb configuration.

12. An interbody implant as recited in claim 1, wherein the first groove has a linear configuration is being disposed in an anterior to posterior orientation relative to the vertebral engaging surfaces.

13. An interbody implant as recited in claim 1, wherein the second groove has a linear configuration and is disposed in a lateral orientation relative to the vertebral engaging surfaces.

14. An interbody implant as recited in claim 1, further comprising a plate connectable with the implant body via a coupling member and defining a single opening oriented to implant a fastener with tissue.

22. An interbody implant as recited in claim 1, wherein the implant body defines a third groove and a fourth groove, the third and fourth grooves each extending into the second vertebral engaging surface without extending through the first vertebral engaging surface, the fourth groove extending transverse to the third groove to intersect and communicate with the third groove.

23. An interbody implant as recited in claim 1, wherein the implant body extends along a longitudinal axis between opposite first and second ends, the anterior and posterior surfaces each extending from the first end to the second end, the vertebral surfaces each extending from the first end to the second end and from the anterior surface to the posterior surface.

24. An interbody implant as recited in claim 23, wherein the first groove extends parallel to the longitudinal axis and the second groove extending perpendicular to the longitudinal axis.

25. An interbody implant as recited in claim 23, wherein the implant body defines a third groove and a fourth groove, the third and fourth grooves each extending into the second vertebral engaging surface without extending through the first vertebral engaging surface, the fourth groove extending transverse to the third groove to intersect and communicate with the third groove, the third groove extending parallel to the longitudinal axis and the fourth groove extending perpendicular to the longitudinal axis.

26. An interbody implant as recited in claim 23, wherein the first end defines a bullet nose.

27. An interbody implant as recited in claim 23, wherein:

the implant body includes an opening in the second end and a track extending through the first vertebral engaging surface such that the track is in communication with the opening; and

the implant comprises a slider having a head positioned in the track and a post positioned in the opening.

28. An interbody implant as recited in claim 27, wherein the head is configured for engagement and translation along the track and the post is fixed to the head and comprises a threaded surface configured to facilitate engagement with a surgical instrument.

29. An interbody implant as recited in claim 1, wherein the first groove extends continuously from the anterior surface to the posterior surface.

30. An interbody implant as recited in claim 1, wherein the first groove comprises a first end extending through the anterior surface and an opposite second end extending through the posterior surface.

2-3. -3. (canceled)

7. (canceled)

9-11. -11. (canceled)

15. An interbody implant comprising:

an implant body extending between an anterior surface and a posterior surface, and including a superior vertebral engaging surface and an inferior vertebral engaging surface,

the superior surface defining a first groove having a linear configuration and being disposed in an anterior to posterior orientation relative to the superior surface, the superior surface defining a second groove having a linear configuration and being disposed in a lateral orientation relative to the superior surface, the second groove extending transverse to the first groove to intersect and communicate with the first groove, and

the inferior surface defining a third groove having a linear configuration and being disposed in an anterior to posterior orientation relative to the inferior surface, the inferior surface defining a fourth groove having a linear configuration and being disposed in a lateral orientation relative to the superior surface, the fourth groove extending transverse to the third groove to intersect and communicate with the third groove,

the grooves being configured for disposal of bone growth detectable via medical imaging.

18. An interbody implant as recited in claim 15, wherein the implant body defines at least one opening that comprises radiographic visual indicia of disposal of the interbody implant in a selected alignment with tissue.

16-17. -17. (canceled)

19. (canceled)

20. An interbody implant comprising:

an implant body extending between an anterior surface and a posterior surface, and including a first vertebral engaging surface and a second vertebral engaging surface, and

the first surface defining a first trough and a second trough, the troughs being configured for disposal of bone growth and detectable to provide radiographic visual indicia, the second trough extending transverse to the first groove to intersect and communicate with the first groove.

21. A method for treating a spine, the method comprising the steps of:

connecting a surgical instrument with an implant body adjacent a cavity of the interbody implant, the implant body extending between opposite first and second ends, the implant body including opposite anterior and posterior surfaces, the anterior and posterior surfaces each extending from the first end to the second end, the implant body including opposite first and second vertebral engaging surfaces, the first and second vertebral engaging surfaces each extending from the first end to the second end and from the anterior surface to the posterior surface, the implant body including an opening extending through the anterior and posterior surfaces and a recess extending into the posterior surface;

disposing the implant body between a first vertebral surface and a second vertebral surface of a subject body;

manipulating the implant body between a non-aligned orientation such that visualization of the opening is obstructed by a surface of the implant body that prevents radiographic visualization of the opening and an aligned orientation such that the surface is oriented to allow radiographic visualization of the opening; and

manipulating the implant body such that recess is detectable to indicate orthogonal alignment of the implant body with the vertebral surfaces.