Systems and methods for treating vertebral bodies

• US 6,716,216 B1
• Filed: 06/20/2000
• Issued: 04/06/2004
• Est. Priority Date: 08/14/1998
• Status: Expired due to Fees

• Current Assignee: Orthophoenix, LLC (Marathon Patent Group, Inc.)
• Original Assignee: Kyphon Incorporated (Medtronic Plc)
• Inventors: Boucher, Ryan P, Reiley, Mark A, Scribner, Robert M, Reo, Michael L
• Primary Examiner(s): REIP, DAVID OWEN
• Application Number:
  US09/597,646
• Time in Patent Office: 1,386 Days
• Field of Search: 606/60, 606/62, 606/63, 606/72, 606/86, 606/92, 606/93, 606/94, 606/95, 606/105, 606/190, 606/191, 606/192
• US Class Current: 606/86.00R
• CPC Class Codes: A61B 17/1631 Special drive shafts, e.g. flexible shafts A61B17/1642, A61B17/164 take precedence
• CPC Class Codes: A61B 17/1662 for particular parts of the body
• CPC Class Codes: A61B 17/1671 for the spine
• CPC Class Codes: A61B 17/1757 for the spine
• CPC Class Codes: A61B 17/3403 Needle locating or guiding means guides for suture needles A61B17/0482; guiding or tracking by nuclear magnetic resonance G01R33/285
• CPC Class Codes: A61B 17/3417 Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating syringe needles A61M5/32; dilators A61M29/00
• CPC Class Codes: A61B 17/3472 for bones, e.g. intraosseus injections
• CPC Class Codes: A61B 17/68 Internal fixation devices , including fasteners and spinal fixators, even if a part thereof projects from the skin bone staples A61B17/0642
• 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 17/88 Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices A61B17/7074 takes precedence
• 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 17/8816 characterised by the conduit, e.g. tube, along which fluid flows into the body or by conduit connections
• CPC Class Codes: A61B 17/8819 characterised by the introducer proximal part, e.g. cannula handle, or by parts which are inserted inside each other, e.g. stylet and cannula A61B17/8825 takes precedence
• CPC Class Codes: A61B 17/8822 characterised by means facilitating expulsion of fluid from the introducer, e.g. a screw pump plunger, hydraulic force transmissions, application of vibrations or a vacuum
• 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 2017/00544 pneumatically
• 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 2090/034 : abutting on parts of the device itself
• CPC Class Codes: A61B 2090/062 : penetration depth
• CPC Class Codes: A61B 2090/3933 : Liquid markers
• CPC Class Codes: A61B 2090/3937 : Visible markers
• 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: A61B 90/90 : Identification means for patients or instruments, e.g. tags
• 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 2002/2817 : 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 2002/3008 : 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 2002/30677 : Means for introducing or releasing pharmaceutical products, e.g. antibiotics, into the body
• CPC Class Codes: A61F 2002/4635 : using minimally invasive surgery
• CPC Class Codes: A61F 2002/4662 : for measuring penetration depth
• CPC Class Codes: A61F 2002/4685 : by means of vacuum
• 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

Systems and methods treat at least two vertebral bodies in a spinal column. The systems and methods make use of first and second tool assemblies operable to treat an interior region of, respectively, a first vertebral body and a second vertebral body in the spinal column. The systems and methods provide directions for operating the first and second tool assemblies to treat the first and second vertebral bodies, at least for a portion of time, concurrently.

Claims

1. A system for treating a bone, comprising:

a device for compacting cancellous bone comprising a wall adapted to be inserted into the bone and undergo expansion in cancellous bone to compact the cancellous bone to create a cavity within the cancellous bone;

a bone plugging material adapted to be inserted into cortical bone either before or after expansion of the device; and

a filling material adapted to be inserted into the cavity.

2. A system according to claim 1, wherein the bone plugging material comprises a bone matrix material.

3. A system according to claim 1, wherein the bone plugging material comprises a sheet material.

4. A system according to claim 1, wherein the bone plugging material comprises a mesh.

5. A system according to claim 1, further including a device operable to convey the filling material into the cavity.

6. A system according to claim 1, wherein expansion of the device applies force within the cancellous bone capable of moving cortical bone.

7. A system according to claim 1, further including a device operable to convey the bone plugging material into the cortical bone.

8. A system according to claim 1, further including a device operable to convey a compression-resistance material into the bone.

9. A system according to claim 1, further including a device operable to convey medication into the bone.

10. A system as in claim 1, wherein the plugging material guards against leaks.

11. A system as in claim 1, wherein the plugging material protects a weakened cortical bone wall during expansion.

12. A system as in claim 1, wherein the plugging material protects against protrusion of the wall during expansion through a pre-existing breach in a cortical bone wall.

13. A system as in claim 1, wherein the plugging material protects against protrusion of the wall during expansion through a breach in a cortical bone wall created during expansion.

14. A method for treating a bone comprising the steps of:

providing a device for compacting cancellous bone comprising a wall adapted to be inserted into the bone and undergo expansion in the cancellous bone to compact the cancellous bone;

compacting the cancellous bone within the bone to create a cavity within the cancellous bone;

inserting a bone plugging material into cortical bone either before or after the step of compacting the cancellous bone; and

conveying a filling material into the cavity.

15. A system for treating bone, comprising:

a device to compact cancellous bone to create a cavity within the cancellous bone;

a bone plugging material adapted to be inserted into cortical bone either before or after creation of the cavity; and

a filling material adapted to be inserted into the cavity.