Methods for treating a fractured and/or diseased and/or weakened bone

• US 8,246,681 B2
• Filed: 10/29/2007
• Issued: 08/21/2012
• Est. Priority Date: 01/26/1994
• Status: Expired due to Fees

• Current Assignee: Orthophoenix, LLC (Marathon Patent Group, Inc.)
• Original Assignee: Kyphon SARL (Medtronic Plc)
• Inventors: Osorio, Reynaldo A, Follmer, Marialulu, Layne, Richard W, Boucher, Ryan P, Talmadge, Karen D, Basista, Joseph J
• Primary Examiner(s): Robert, Eduardo C
• Assistant Examiner(s): Carter, Tara
• Application Number:
  US11/978,271
• Publication Number:
  US 20080065087A1
• Time in Patent Office: 1,758 Days
• Field of Search: 606 92- 94, 606/90, 606/105, 623 1711- 1712
• US Class Current: 623/17.11
• 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

Introduction of a bone filler material into at least a portion of the cancellous bone volume pressurizes the bone filler material and compresses the cancellous bone volume within the bone structure.

Claims

1. A method comprising

establishing a percutaneous path into a vertebral body having cortical bone enclosing a cancellous bone volume,

forming a cavity in the cancellous bone volume,

compressing at least a portion of the cancellous bone volume by injecting a pressurized flowable bone filler material directly into the cavity,

pushing the flowable bone filler material outward against the walls of the cavity to increase the size of the cavity by injecting additional flowable bone filler material into the cavity;

and

moving a fractured cortical bone of the vertebral body to a pre-fractured position by injecting additional flowable bone filler material into the cavity.

2. A method according to claim 1, wherein the flowable bone filler material comprises a bone cement.

3. A method according to claim 1, wherein the bone filler material comprises a bone cement.

4. A method of claim 1, wherein the flowable bone filler material comprises a bone cement.

5. A method comprising

establishing a percutaneous path into a bone structure having cortical bone enclosing a cancellous bone volume,

introducing a flowable bone filler material directly into at least a portion of the cancellous bone volume,

pressurizing the flowable bone filler material within the bone structure by continuing the introduction of the flowable bone filler material into the cancellous bone volume,

compressing the cancellous bone volume within the bone structure by the pressurizing of the flowable bone filler material;

and

moving a fractured cortical bone of the vertebral body to a pre-fractured position by injecting additional flowable bone filler material into the cavity.

6. A method according to claim 5 wherein the pressurizing of the flowable bone filler material within the bone structure moves fractured cortical bone.

7. A method according to claim 5 wherein the bone structure comprises a vertebral body.

8. A method according to claim 5 wherein the flowable bone filler material comprises a bone cement.

9. A method according to claim 5, wherein the flowable bone filler 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 biomaterial, allograft tissue, and autograft tissue.

11. A method according to claim 9 wherein introducing the second amount of the flowable bone filler material moves fractured cortical bone of the vertebral body.

10. A method comprising

creating a cavity a vertebral body,

introducing a first amount of a flowable bone filler material directly into the cavity,

introducing a second amount of pressurized flowable bone filler material into the cavity such that the flowable bone filler material pushes outward against a wall of the cavity, thereby compressing a cancellous bone in the vertebral body and increasing the size of the cavity;

and

moving the cortical bone until the fractured cortical bone regains a pre-fractured position.

12. A method comprising

compressing at least a portion of a cancellous bone volume within a vertebral body by injecting a flowable bone filler material directly into the cancellous bone volume,

moving fractured cortical bone of the vertebral body by injecting pressurized flowable bone filler material into the vertebral body,

comprising moving fractured cortical bone to a pre-fractured position.

13. A method according to claim 12 wherein the flowable bone filler comprises a bone cement.

14. A method according to claim 12, wherein the flowable bone filler 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 biomaterial, allograft tissue, and autograft tissue.