Systems and methods for treating vertebral bodies

• US 20040210231A1
• Filed: 05/10/2004
• Published: 10/21/2004
• Est. Priority Date: 08/14/1998
• Status: Active Grant

• Current Assignee: Orthophoenix, LLC (Marathon Patent Group, Inc.)
• Original Assignee: Kyphon Incorporated
• Inventors: Reo, Michael L., Scribner, Robert M., Reiley, Mark A., Boucher, Ryan P.
• Granted Patent: US 7,938,835 B2
• Time in Patent Office: Days
• US Class Current: 606/93
• 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 with hole for different instruments A61B2017/22072
• 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 for prostheses A61F2210/0014
• 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 bone comprising

an expandable device adapted to be inserted into bone in a collapsed condition and thereafter capable of being expanded to form a cavity in cancellous bone, and

a fluid transport passage adapted to convey fluid from a source into the cavity as the device is returned to the collapsed condition.

2. A system according to claim 1

wherein the device, during expansion, applies force capable of moving cortical bone toward a restored position, and

wherein the fluid transport passage conveys fluid into the cavity to resist movement of cortical bone away from the restored position as the device is returned to the collapsed condition and withdrawn from bone.

3. A system according to claim 1

wherein the fluid transport passage is separate from the device.

4. A system according to claim 1

wherein the fluid transport passage is part of the device.

5. A system according to claim 1

wherein the device and fluid transport passage comprise an integrated assembly.

6. A system according to claim 1

wherein the fluid transport passage comprises a lumen in the device.

7. A system according to claim 1

wherein the fluid transport passage is adapted to convey a liquid.

8. A system according to claim 1

wherein the fluid transport passage is adapted to convey a gas.

9. A system according to claim 1

further including a pump coupled to the fluid transport passage.

10. A system according to claim 17

further including a device operable to convey the material into the cavity.

11. A system according to claim 17

wherein the material is a filling material

12. A system according to claim 17

wherein the material is a compression-resistant material.

13. A system according to claim 17

wherein the material is a medication.

14. A system according to claim 1

wherein the device is adapted to be withdrawn from bone.

15. A system according to claim 1

wherein the conveyance of the fluid into the cavity resists formation of a vacuum inside the cavity.

16. A system according to claim 8

wherein the gas is air.

17. A system according to claim 1

wherein the cavity is adapted to receive a material.

18. A system according to claim 17

wherein the material is a flowable material which sets to a hardened condition.