Method and apparatus for treating a vertebral body

• US 20040215344A1
• Filed: 03/19/2004
• Published: 10/28/2004
• Est. Priority Date: 02/28/2000
• Status: Abandoned Application

• Current Assignee: Spineology Incorporated
• Original Assignee: Spineology Incorporated
• Inventors: Wales, Larry, Lipschultz, Tyler, Hektner, Thomas R., Nickels, Kevin L., Hochschuler, Stephen, Johnson, Wesley
• Application Number:
  US10/804,955
• Publication Number:
  US 20040215344A1
• Time in Patent Office: Days
• US Class Current: 623/17.12
• CPC Class Codes: A61B 17/7097 Stabilisers comprising fluid filler in an implant, e.g. balloon; devices for inserting or filling such implants disc prostheses made of inflatable chambers or pockets filled with fluid A61F2/441; replacing the nucleus pulposus A61F2002/444
• CPC Class Codes: A61B 17/7098 wherein the implant is permeable or has openings, e.g. fenestrated screw hollow surgical screws A61B17/864
• CPC Class Codes: A61F 2/44 for the spine, e.g. vertebrae, spinal discs
• 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 2002/2817 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 2002/30112 Rounded shapes, e.g. with rounded corners
• CPC Class Codes: A61F 2002/30131 horseshoe- or crescent- or C-shaped or U-shaped
• CPC Class Codes: A61F 2002/30156 triangular
• CPC Class Codes: A61F 2002/30586 having two or more inflatable pockets or chambers
• CPC Class Codes: A61F 2002/30787 inclined obliquely with respect to each other
• CPC Class Codes: A61F 2230/0004 Rounded shapes, e.g. with rounded corners
• CPC Class Codes: A61F 2230/0013 Horseshoe-shaped, e.g. crescent-shaped, C-shaped, U-shaped
• CPC Class Codes: A61F 2230/0023 triangular
• 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 2310/00293 containing a phosphorus-containing compound, e.g. apatite
• CPC Class Codes: A61F 2310/00353 Bone cement, e.g. polymethylmethacrylate or PMMA

Abstract

An implantable container is used to stabilize or restore height in a vertebral body. After insertion the container is filled with a bone filler material such as bone cement.

Claims

1. An implantable device for insertion into a cavity in a vertebral body comprising:

a container having a wall membrane;

said wall membrane defining an interior and an exterior of said container and at least one hole connecting the interior with the exterior; and

a fill tube coupled to said container at a location proximate an edge of said container for injecting a flowable bone filler material into said container such that said bone filler leaves said interior and enters said vertebral body.

2. The device of claim 1 wherein said container is substantially tubular in shape.

3. The device of claim 1 wherein said wall membrane is elastic.

4. The device of claim 1 wherein said wall membrane is inelastic.

5. The device of claim 1 wherein at least one of said wall membranes is woven.

6. The device of claim 1 wherein said wall membrane is porous.

7. The device of claim 1 wherein said wall membrane is not porous.

8. The device of claim 1 further comprising a septum located adjacent said container and in fluid communication with said interior for permitting the sealing entry of a filling device.

9. The device of claim 1 wherein said membrane is radiopaque.

10. The device of claim 1 wherein said membrane is radio-translucent.

11. The device of claim 1 further comprising a delivery tube, wherein said container is everted within said delivery tube.

28. The device of claim 1, wherein said container is expandable under pressure from the flowable bone filler injected into said container.

29. The device of claim 28, wherein said container is expandable from a first configuration sized for percutaneous introduction through a cannula to a larger second configuration sized to fill the cavity in the vertebral body.

30. The device of claim 1, wherein said fill tube is removably coupled to said container.

31. The device of claim 30, wherein said fill tube includes an area of weakness adjacent said container adapted to break to remove said fill tube from said container.

32. The device of claim 6, wherein said wall defines a plurality of holes symmetrically disposed about said container.

33. The device of claim 6, wherein said wall defines a plurality of holes asymmetrically disposed about said container.

12. An implantable device for insertion into a cavity in a vertebral body comprising:

an upper wall member;

a lower wall member;

a circumferential wall member connecting said upper wall member and said lower wall member; and

a set of ribs extending between said upper wall member and said lower wall member, forming a set of compartments therebetween.

13. The device of claim 12 wherein said upper and lower wall members have a substantially horseshoe shape.

14. The device of claim 12 wherein said upper and lower wall members have a substantially triangular shape.

15. The device of claim 12 wherein said upper, lower and circumferential wall members define a container that is substantially cylindrical in shape.

16. The device of claim 12 wherein at least said circumferential wall member is elastic.

17. The device of claim 12 wherein at least said circumferential wall member is inelastic.

18. The device of claim 12 wherein at least one of said upper, lower and circumferential walls is woven.

19. The device of claim 12 wherein at least one of said upper, lower and circumferential walls is porous.

20-24. -24 (cancelled)

25. An implantable device for insertion into a cavity in a vertebral body comprising an expandable container including an upper wall member, a lower wall member, and a circumferential wall member, said wall members together defining a single chamber.

26. The device of claim 25 wherein said upper and lower wall members have a substantially horseshoe shape.

27. The device of claim 25 wherein said upper and lower wall members have a substantially triangular shape.