Methods and devices for treating fractured and/or diseased bone using a mesh structure

• US 20070055267A1
• Filed: 09/27/2006
• Published: 03/08/2007
• Est. Priority Date: 06/09/1997
• Status: Active Grant

• Current Assignee: Orthophoenix, LLC (Marathon Patent Group, Inc.)
• Original Assignee: Kyphon Incorporated (Medtronic Plc)
• Inventors: Boucher, Ryan, Layne, Richard, Basista, Joseph, Osorio, Reynaldo, Talmadge, Karen, Follmer, Marialulu
• Granted Patent: US 8,317,865 B2
• Time in Patent Office: Days
• US Class Current: 606/86.R
• CPC Class Codes: A61B 17/1604 Chisels; Rongeurs; Punches; Stamps
• CPC Class Codes: A61B 17/1671 for the spine
• CPC Class Codes: A61B 17/3472 for bones, e.g. intraosseus injections
• CPC Class Codes: A61B 17/8805 for introducing fluid filler into bone or extracting it A61B17/7097, A61B17/8833 take precedence
• CPC Class Codes: A61B 17/8855 inflatable, e.g. kyphoplasty balloons
• CPC Class Codes: A61B 2017/00261 Discectomy
• CPC Class Codes: A61B 2017/00464 for use with different instruments
• CPC Class Codes: A61B 2017/00539 hydraulically
• CPC Class Codes: A61B 2017/00557 inflatable A61B2017/22051 takes precedence
• CPC Class Codes: A61B 2017/00867 shape memory effect
• CPC Class Codes: A61B 2050/0065 Peelable cover
• CPC Class Codes: A61B 2090/062 penetration depth
• CPC Class Codes: A61B 50/33 Trays
• CPC Class Codes: A61B 90/39 Markers, e.g. radio-opaque or breast lesions markers
• 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 2/4603 for insertion or extraction of endoprosthetic joints or of accessories thereof
• 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 2002/3008 radio-opaque, e.g. radio-opaque markers
• CPC Class Codes: A61F 2002/30581 having a pocket filled with fluid, e.g. liquid
• CPC Class Codes: A61F 2002/4635 : using minimally invasive surgery
• CPC Class Codes: A61F 2002/4662 : for measuring penetration depth
• CPC Class Codes: A61F 2250/0098 : radio-opaque, e.g. radio-opaque markers
• CPC Class Codes: A61F 2310/00353 : Bone cement, e.g. polymethylmethacrylate or PMMA

Abstract

A percutaneous path is established into a selected bone having an interior volume occupied, at least in part, by a cancellous bone, e.g., a vertebral body. An expandable mesh structure is introduced into the cancellous bone by deployment of a tool through the percutaneous path into the cancellous bone. The expandable mesh structure is expanded within cancellous bone by conveying a material into the mesh structure. Expansion of the mesh structure can, e.g., compact cancellous bone, and/or form a cavity in cancellous bone, and/or move fractured cortical bone.

Claims

1. A system comprising

a mesh structure sized and configured to be introduced through a percutaneous access path into bone having an interior volume occupied, at least in part, by cancellous bone, and

a filling device sized to be introduced through a percutaneous access path for conveying a material into the mesh structure.

2. A system according to claim 1

wherein the material comprises at least one of a bone filler, a bone cement, a synthetic bone substitute, a bone biomaterial, a hydroxyapatite material, a bone mineral material, a thixotropic material, a curable bio-material, allograft tissue, and autograft tissue

3. A system according to claim 1

wherein the mesh structure includes a bio-adsorbable material.

4. A system according to claim 1

further including a tool sized and configured to be introduced through a percutaneous access path for forming a cavity in the cancellous bone prior to introduction of the mesh structure.

5. A system according to claim 4

wherein the tool for forming a cavity comprises at least one of a tamp, a reamer, a hole punch, an expandable body, or an inflatable balloon.

6. A system according to claim 1

wherein the mesh structure expands within cancellous bone in response to introduction of the material.

7. A system according to claim 6

wherein expansion of the mesh structure compacts cancellous bone.

8. A system according to claim 6

wherein expansion of the mesh structure forms a cavity in cancellous bone.

9. A system according to claim 6

wherein expansion of the mesh structure moves fractured cortical bone.

10. A system according to claim 1

wherein the mesh structure comprises a woven structure.

11. A system according to claim 1

wherein the mesh structure comprises at least one of a Goretex™

material, a nitinol material, and a Dacron™

material.

12. A system according to claim 1

wherein the mesh structure impedes passage of the material from the mesh structure.

13. A system according to claim 1

wherein the mesh structure is sized and configured to reside within the cancellous bone.

14. A method comprising

selecting a bone having an interior volume occupied, at least in part, by cancellous bone,

providing a system as defined in claim 1,

introducing the mesh structure through a percutaneous access path into the cancellous bone, and

conveying a material into the mesh structure through a percutaneous access path.

15. A method according to claim 14

further including forming a cavity in the cancellous bone prior to introduction of the mesh structure.

16. A method according to claim 14

wherein the mesh structure expands within cancellous bone in response to introduction of the material.

17. A method according to claim 16

wherein expansion of the mesh structure compacts cancellous bone.

18. A method according to claim 16

wherein expansion of the mesh structure forms a cavity in cancellous bone.

19. A method according to claim 16

wherein expansion of the mesh structure moves fractured cortical bone.

20. A method according to claim 14

wherein the selected bone is a vertebral body.

21. A method according to claim 20

wherein the percutaneous path is established through a pedicle of the vertebral body.

22. A method according to claim 14

wherein the material comprises at least one of a bone filler, a bone cement, a synthetic bone substitute, a bone biomaterial, a hydroxyapatite material, a bone mineral material, a thixotropic material, a curable bio-material, allograft tissue, and autograft tissue.

23. A method according to claim 14

further including leaving the expanded mesh structure and material to reside within the cancellous bone.

24. A method comprising

creating a percutaneous path into a selected bone having an interior volume occupied, at least in part, by a cancellous bone;

introducing an expandable mesh structure into the cancellous bone by deployment of a tool through the percutaneous path into the cancellous bone; and

expanding the expandable mesh structure within cancellous bone by conveying a material into the mesh structure.

25. A method according to claim 24

further including forming a cavity in the cancellous bone prior to introduction of the mesh structure.

26. A method according to claim 24

wherein the mesh structure expands within cancellous bone in response to introduction of the material.

27. A method according to claim 26

wherein expansion of the mesh structure compacts cancellous bone.

28. A method according to claim 26

wherein expansion of the mesh structure forms a cavity in cancellous bone.

29. A method according to claim 26

wherein expansion of the mesh structure moves fractured cortical bone.

30. A method according to claim 24

wherein the selected bone is a vertebral body.

31. A method according to claim 24

wherein the percutaneous path is established through a pedicle of the vertebral body.

32. A method according to claim 24

wherein the material comprises at least one of a bone filler, a bone cement, a synthetic bone substitute, a bone biomaterial, a hydroxyapatite material, a bone mineral material, a thixotropic material, a curable bio-material, allograft tissue, and autograft tissue.

33. A method according to claim 24

leaving the expanded mesh structure and material to reside within the cancellous bone.