Implant frames for use with settable materials and related methods of use

• US 20050209696A1
• Filed: 01/11/2005
• Published: 09/22/2005
• Est. Priority Date: 01/16/2004
• Status: Active Grant

• Current Assignee: Warsaw Orthopedic Incorporated (Medtronic Plc)
• Original Assignee: Warsaw Orthopedic Incorporated (Medtronic Plc)
• Inventors: Chow, David, Martz, Erik O., Lin, Jo-Wen, Rosenthal, Daniel, Millets, Joel F.
• Granted Patent: US 8,012,210 B2
• Time in Patent Office: Days
• US Class Current: 623/17.120
• CPC Class Codes: A61F 2/30744 End caps, e.g. for closing an endoprosthetic cavity
• CPC Class Codes: A61F 2/3094 Designing or manufacturing processes
• CPC Class Codes: A61F 2/441 made of inflatable pockets or chambers filled with fluid, e.g. with hydrogel
• 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 2/4601 for introducing bone substitute, for implanting bone graft implants or for compacting them in the bone cavity
• 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 2002/30062 (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 2002/30113 circular
• CPC Class Codes: A61F 2002/30125 elliptical or oval
• CPC Class Codes: A61F 2002/30133 kidney-shaped or bean-shaped
• CPC Class Codes: A61F 2002/30153 rectangular
• CPC Class Codes: A61F 2002/30156 triangular
• CPC Class Codes: A61F 2002/30166 H-shaped or I-shaped
• CPC Class Codes: A61F 2002/302 toroidal, e.g. rings
• CPC Class Codes: A61F 2002/30235 tubular, e.g. sleeves
• CPC Class Codes: A61F 2002/30485 plastically deformable
• CPC Class Codes: A61F 2002/305 Snap connection
• CPC Class Codes: A61F 2002/30545 for adjusting a diameter
• CPC Class Codes: A61F 2002/3055 for adjusting length
• CPC Class Codes: A61F 2002/30578 : having apertures, e.g. for receiving fixation screws
• CPC Class Codes: A61F 2002/30583 : filled with hardenable fluid, e.g. curable in-situ
• CPC Class Codes: A61F 2002/30604 : modular
• CPC Class Codes: A61F 2002/30622 : Implant for fusing a joint or bone material
• CPC Class Codes: A61F 2002/30772 : Apertures or holes, e.g. of circular cross section
• 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 2002/448 : comprising multiple adjacent spinal implants within the same intervertebral space or within the same vertebra, e.g. comprising two adjacent spinal implants
• CPC Class Codes: A61F 2002/4495 : having a fabric structure, e.g. made from wires or fibres
• CPC Class Codes: A61F 2210/0004 : bioabsorbable
• CPC Class Codes: A61F 2210/0014 : using shape memory or superelastic materials, e.g. nitinol
• CPC Class Codes: A61F 2210/0085 : hardenable in situ, e.g. epoxy resins
• CPC Class Codes: A61F 2220/0025 : Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
• CPC Class Codes: A61F 2230/0006 : circular
• CPC Class Codes: A61F 2230/0008 : elliptical or oval
• CPC Class Codes: A61F 2230/0015 : Kidney-shaped, e.g. bean-shaped
• CPC Class Codes: A61F 2230/0019 : rectangular
• CPC Class Codes: A61F 2230/0023 : triangular
• CPC Class Codes: A61F 2230/0028 : Shapes in the form of latin or greek characters
• CPC Class Codes: A61F 2230/0065 : toroidal, e.g. ring-shaped, doughnut-shaped
• CPC Class Codes: A61F 2230/0069 : cylindrical
• CPC Class Codes: A61F 2250/001 : for adjusting a diameter
• CPC Class Codes: A61F 2310/00017 : Iron- or Fe-based alloys, e.g. stainless steel
• CPC Class Codes: A61F 2310/00029 : Cobalt-based alloys, e.g. Co-Cr alloys or Vitallium
• CPC Class Codes: A61F 2310/00179 : Ceramics or ceramic-like structures
• CPC Class Codes: A61F 2310/00293 : containing a phosphorus-containing compound, e.g. apatite
• CPC Class Codes: A61F 2310/00353 : Bone cement, e.g. polymethylmethacrylate or PMMA
• CPC Class Codes: A61F 2310/00365 : Proteins; Polypeptides; Degradation products thereof

Abstract

Intervertebral implant system for intervertebral implantation, are disclosed. An intervertebral implant system according to the present disclosure includes a frame having a peripheral wall defining a space therein, and a settable material introducible into the space of the frame. The settable material is a biocompatible load bearing material including and not limited to bone, composites, polymers of bone growth material, collagen, and insoluble collagen derivatives. The settable material is injectable into the space defined by the frame. The settable material may have an initial fluid condition wherein the fluid settable material cures to a hardened condition.

Claims

1. An intervertebral implant system for intervertebral implantation, comprising:

a frame having a peripheral wall defining a space therein, and

a settable material introducible into the space of the frame.

2. The intervertebral implant system of claim 1, wherein the frame is constructed from at least one of titanium, titanium alloy, steel, shape memory alloy, resorbable polymer, non-resorbable polymer, ceramic, and organic materials.

3. The intervertebral implant system of claim 2, wherein the settable material is a biocompatible load bearing material.

4. The intervertebral implant system of claim 3, wherein the settable material includes bone, composites, polymers of bone growth material, collagen, and insoluble collagen derivatives.

5. The intervertebral implant system of claim 3, wherein the settable material is injectable into the space defined by the frame.

6. The intervertebral implant system of claim 5, wherein the settable material has an initial fluid condition and is curable to a hardened condition.

7. The intervertebral implant system of claim 6, wherein at least one of an upper edge and a lower edge of the frame are shaped.

8. The intervertebral implant system of claim 6, wherein at least one of the upper edge of the frame and the lower edge of the frame includes at least one of a plurality of projections formed along a length of the frame, and a continuous projection extending along a length of the frame.

9. The intervertebral implant system of claim 6, wherein the frame is flexible along at least a portion of a length thereof.

10. The intervertebral implant system of claim 9, wherein the frame includes a pair of free ends.

11. The intervertebral implant system of claim 10, wherein the free ends of the frame are joinable to one another.

12. The intervertebral implant system of claim 10, further comprising a cap positionable within the space defined by the frame, the cap being dimensioned to extend beyond at least each free end of the frame.

13. The intervertebral implant system of claim 6, wherein the frame is linearly expandable.

14. The intervertebral implant system of claim 6, wherein the frame includes at least one opening formed in the peripheral wall.

15. The intervertebral implant system of claim 14, further comprising at least one plug configured and dimensioned for insertion into each opening of the frame, wherein the at least one plug prevents the escape of the settable material from the space defined by the frame.

16. The intervertebral implant system of claim 6, wherein the peripheral wall of the frame is at least partially collapsible.

17. The intervertebral implant system of claim 6, wherein the frame is substantially wedge-shaped.

18. The intervertebral implant system of claim 6, wherein the peripheral wall includes at least one of a planar inner surface and a planar outer surface.

19. The intervertebral implant system of claim 6, wherein the peripheral wall includes at least one of a convex inner surface and a planar outer surface.

20. The intervertebral implant system of claim 6, wherein the peripheral wall includes at least one of a concave inner surface and a planar outer surface.

21. The intervertebral implant system of claim 6, wherein the peripheral wall includes at least one of a saw-toothed inner and outer surface.

22. The intervertebral implant system of claim 6, wherein the peripheral wall of the frame defines a cylindrical body portion having an aperture formed therein, the frame further including:

an upper surface connected to an upper edge of the peripheral wall;

a lower surface connected to a lower edge of the peripheral wall;

a first stub extending from the upper surface; and

a second stub extending from the lower surface.

23. The intervertebral implant system of claim 22, wherein the frame includes an upper and a lower ring each having a dimension, the first stub includes a first and a second ring each having a dimension smaller than the dimension of the rings of the frame, wherein the first ring of the first stub is in the plane of the upper ring of the frame;

and the second stub includes a first and a second ring each having a dimension smaller than the dimension of the rings of the frame, wherein the first ring of the second stub is in the plane of the lower ring of the frame.

24. The intervertebral implant system of claim 23, wherein the frame includes a membrane enclosing each of the rings thereof.

25. The intervertebral implant system of claim 6, wherein a length of the perimetral wall defining the space of the frame is adjustable.

26. The intervertebral implant system of claim 6, wherein the peripheral wall has an I-shaped transverse cross-sectional profile.

27. The intervertebral implant system of claim 1, wherein the frame is an inflatable balloon and wherein the balloon is inflatable with settable material.

28. The intervertebral implant system of claim 27, wherein the balloon has a substantially rectangular and triangular shape.

29. The intervertebral implant system of claim 28, wherein the balloon is fabricated from a resorbable material.

30. The intervertebral implant system of claim 1, wherein the peripheral wall is fabricated from strands of resorbable polymers.

31. The intervertebral implant system of claim 1, further comprising:

a support plate securable to adjacent intervertebral discs; and

a fixation means extendable through the support plate and into the peripheral wall of the frame.