Methods for treating a fractured and/or diseased vertebral body by incremental introduction of bone filling material

• US 20070055281A1
• Filed: 09/27/2006
• Published: 03/08/2007
• Est. Priority Date: 01/26/1994
• Status: Abandoned Application

• Current Assignee: Orthophoenix, LLC (Marathon Patent Group, Inc.)
• Original Assignee: Kyphon Incorporated
• Inventors: Scholten, Arie, Boucher, Ryan, Follmer, Marialulu, Layne, Richard, Reo, Michael, Scribner, Robert, Basista, Joseph, Osorio, Reynaldo, Reiley, Mark, Talmadge, Karen
• Application Number:
  US11/528,165
• Publication Number:
  US 20070055281A1
• Time in Patent Office: Days
• US Class Current: 606/92
• 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 with hole for different instruments A61B2017/22072
• 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 for prostheses A61F2210/0014
• 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 vertebral body, having an interior volume occupied, at least in part, by cancellous bone. A first bone filling material is conveyed through the percutaneous path into a region of the cancellous bone. A second bone filling material is conveyed through the percutaneous path into the region. The first and second bone filling materials can, e.g., incrementally create then enlarge a compressed region of cancellous bone, or displace the fractured cortical bone in increments.

Claims

1. A method comprising:

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

establishing a percutaneous path into the vertebral body,

conveying a first bone filling material through the percutaneous path to compress a region of the cancellous bone,

conveying a second bone filling material through the percutaneous path to enlarge the region, and

leaving the first and second bone filling materials in the enlarged region.

2. A method according to claim 1

wherein conveying the first bone filling material includes use of an expandable structure.

3. A method according to claim 1

wherein conveying the second bone filling material includes use of an expandable structure.

4. A method according to claim 1

wherein conveying the first bone filling material includes use of a flowable material.

5. A method according to claim 1

wherein conveying the second bone filling material includes use of a flowable material.

6. A method according to claim 1

wherein conveying the first bone filling material forms a cavity, and

wherein conveying the second bone filling material enlarges the cavity.

7. A method according to claim 1

wherein conveying the first bone filling material moves fractured cortical bone.

8. A method according to claim 1

wherein conveying the second bone filling material moves fractured cortical bone.

9. A method comprising:

selecting a vertebral body having an interior volume occupied, at least in part, by cancellous bone, the vertebral body having at least one cortical plate that is depressed due to fracture;

establishing a percutaneous path into the vertebral body;

inserting a first bone filling material through the percutaneous path into the vertebral body causing the fractured cortical plate to be displaced; and

inserting a second bone filling material through the percutaneous path into the vertebral body causing further displacement of the fractured cortical plate.

10. A method according to claim 9

wherein conveying the first bone filling material includes use of an expandable structure.

11. A method according to claim 9

wherein conveying the second bone filling material includes use of an expandable structure.

12. A method according to claim 9

wherein conveying the first bone filling material includes use of a flowable material.

13. A method according to claim 9

wherein conveying the second bone filling material includes use of a flowable material.

14. A method according to claim 9

wherein conveying the first bone filling material forms a cavity, and

wherein conveying the second bone filling material enlarges the cavity.

15. A method according to claim 9

wherein conveying the first bone filling material forms a compressed region of cancellous bone, and

wherein conveying the second bone filling material enlarges the compresses region.