EXPANDABLE SPINAL INTERBODY IMPLANT

• US 20120277861A1
• Filed: 04/28/2011
• Published: 11/01/2012
• Est. Priority Date: 04/28/2011
• Status: Abandoned Application

• Current Assignee: Warsaw Orthopedic Incorporated (Medtronic Plc)
• Original Assignee: Warsaw Orthopedic Incorporated (Medtronic Plc)
• Inventors: Steele, Bradley, Van Nortwick, Matthew J.
• Application Number:
  US13/096,668
• Publication Number:
  US 20120277861A1
• Time in Patent Office: Days
• US Class Current: 623/17.12
• CPC Class Codes: A61F 2/30965 Reinforcing the prosthesis by embedding particles or fibres during moulding or dipping
• CPC Class Codes: A61F 2/441 made of inflatable pockets or chambers filled with fluid, e.g. with hydrogel
• CPC Class Codes: A61F 2/4425 made of articulated components
• CPC Class Codes: A61F 2/4465 having a circular or kidney shaped cross-section substantially perpendicular to the axis of the spine
• CPC Class Codes: A61F 2002/2817 Bone stimulation by chemical reactions or by osteogenic or biological products for enhancing ossification, e.g. by bone morphogenetic or morphogenic proteins [BMP] or by transforming growth factors [TGF]
• CPC Class Codes: A61F 2002/2835 Bone graft implants for filling a bony defect or an endoprosthesis cavity, e.g. by synthetic material or biological material
• CPC Class Codes: A61F 2002/30019 differing in mechanical expandability, e.g. in mechanical, self- or balloon expandability
• CPC Class Codes: A61F 2002/30062 (bio)absorbable, biodegradable, bioerodable, (bio)resorbable, resorptive
• CPC Class Codes: A61F 2002/30092 using shape memory or superelastic materials, e.g. nitinol
• CPC Class Codes: A61F 2002/302 toroidal, e.g. rings
• CPC Class Codes: A61F 2002/30448 using adhesives
• CPC Class Codes: A61F 2002/30484 Mechanically expandable devices located on the first prosthetic part for locking into or onto the second prosthetic part
• CPC Class Codes: A61F 2002/30538 for adjusting angular orientation
• CPC Class Codes: A61F 2002/30546 for adjusting elasticity, flexibility, spring rate or mechanical tension
• CPC Class Codes: A61F 2002/30548 for adjusting fluid pressure
• CPC Class Codes: A61F 2002/30556 for adjusting thickness
• CPC Class Codes: A61F 2002/30583 filled with hardenable fluid, e.g. curable in-situ
• CPC Class Codes: A61F 2002/30586 having two or more inflatable pockets or chambers
• CPC Class Codes: A61F 2002/30588 filled with solid particles
• CPC Class Codes: A61F 2002/30593 hollow
• CPC Class Codes: A61F 2002/30604 : modular
• CPC Class Codes: A61F 2002/30616 : Sets comprising a plurality of prosthetic parts of different sizes or orientations
• CPC Class Codes: A61F 2002/30647 : Joints made of two toroidal rings engaged together
• CPC Class Codes: A61F 2002/30777 : Oblong apertures
• CPC Class Codes: A61F 2002/30841 : Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes
• CPC Class Codes: A61F 2002/30878 : with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
• 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 2002/3093 : for promoting ingrowth of bone tissue
• CPC Class Codes: A61F 2310/00017 : Iron- or Fe-based alloys, e.g. stainless steel
• CPC Class Codes: A61F 2310/00023 : Titanium or titanium-based alloys, e.g. Ti-Ni alloys
• CPC Class Codes: A61F 2310/00029 : Cobalt-based alloys, e.g. Co-Cr alloys or Vitallium
• CPC Class Codes: A61F 2310/00107 : Palladium or Pd-based alloys
• CPC Class Codes: A61F 2310/00113 : Silver or Ag-based alloys
• CPC Class Codes: A61F 2310/00137 : Tungsten or W-based alloys
• CPC Class Codes: A61F 2310/00149 : Platinum or Pt-based alloys
• CPC Class Codes: A61F 2310/00155 : Gold or Au-based alloys
• CPC Class Codes: A61F 2310/00293 : containing a phosphorus-containing compound, e.g. apatite
• CPC Class Codes: A61F 2310/00796 : Coating or prosthesis-covering structure made of a phosphorus-containing compound, e.g. hydroxy(l)apatite

Abstract

An expandable spinal implant for insertion into and positioning in an intervertebral disc space for intervertebral stabilization, the implant comprising a first implant section, an opposing second implant section and at least one expander attached between the first and second implant sections. The at least one implant expander can be selectively expanded to thereby actuate the spinal implant from a collapsed to an expanded position. The at least one implant expander is expanded via injection of an expanding material, such as bone cement. Also, the at least one implant expander is selectively expanded to impart substantially vertical expansion, angular expansion or vertical and angular expansion to the spinal implant. The expandable implant comprises polyetheretherketone (PEEK) or Titanium implant sections coupled to the implant expander whereby the implant is positioned between adjacent vertebral endplates where the implant can be expanded in the disc space between adjacent vertebral bodies.

Claims

1. A spinal implant for insertion into and positioning in an intervertebral disc space, the implant comprising:

a first implant section;

an opposing second implant section; and

at least one expander attached between the first and second implant sections;

wherein the at least one implant expander can be selectively expanded to thereby actuate the spinal implant to an expanded position.

2. The implant of claim 1, wherein the at least one implant expander is expanded via injection of an expanding material.

3. The implant of claim 1, wherein the at least one implant expander is selectively expanded to impart substantially vertical expansion to the spinal implant.

4. The implant of claim 1, wherein the at least one implant expander is selectively expanded to impart angular expansion to the spinal implant.

5. The implant of claim 1, wherein the at least one implant expander is selectively expanded to impart vertical and angular expansion to the spinal implant.

6. The implant of claim 1, wherein the spinal implant comprises

a first expander attached between the first and second implant sections;

and

an opposing second expander attached between the first and second implant sections.

7. The implant of claim 2, wherein the expanding material is bone cement.

8. The implant of claim 1, wherein the at least one expander is a balloon.

9. The implant of claim 3, wherein the at least one implant expander imparts a substantially vertical expansion in the range of between eight and fourteen millimeters (8-14 mm).

10. The implant of claim 4, wherein the at least one implant expander imparts an angular expansion in the range of between zero degrees to twelve degrees (0°

-12°

.

11. The implant of claim 1, wherein the first and second implant sections are polyetheretherketone (PEEK) or a metallic material.

12. The implant of claim 11, wherein the metallic material is titanium (Ti) or a titanium (Ti) alloy.

13. The implant of claim 1, wherein the first and second implant sections comprise a Hydroxyapatite (HA) layer.

17. The implant of claim 1, wherein the first and second lateral expanders are selectively expanded to impart angular expansion to the spinal implant.

18. The implant of claim 1, wherein the first and second lateral expanders are selectively expanded to impart vertical and angular expansion to the spinal implant.

19. The implant of claim 1, wherein the first and second implant sections are polyetheretherketone (PEEK).

20. The implant of claim 1, wherein the first and second implant sections comprise a Hydroxyapatite (HA) layer.

14. A spinal implant for insertion into and positioning in an intervertebral disc space, the implant comprising:

a first implant section comprising bone securing serrations;

an opposing second implant section comprising bone securing serrations;

a first lateral expander attached between the first and second implant sections; and

an opposing second lateral expander attached between the first and second implant sections.

wherein the first and second lateral expanders can be selectively expanded to thereby actuate the spinal implant to an expanded position.

15. The implant of claim 14, wherein the first and second lateral expanders are expanded via injection of an expanding material.

16. The implant of claim 14, wherein the first and second lateral expanders are selectively expanded to impart substantially vertical expansion to the spinal implant.