Systems and methods for placing materials into bone

• US 7,771,431 B2
• Filed: 11/06/2006
• Issued: 08/10/2010
• Est. Priority Date: 08/14/1998
• Status: Expired due to Fees

• Current Assignee: Orthophoenix, LLC (Marathon Patent Group, Inc.)
• Original Assignee: Kyphon SARL (Medtronic Plc)
• Inventors: Reo, Michael L, Boucher, Ryan, Reiley, Mark A, Scribner, Robert M
• Primary Examiner(s): Philogene; Pedro
• Application Number:
  US11/593,284
• Publication Number:
  US 20070055283A1
• Time in Patent Office: 1,373 Days
• Field of Search: 606/92, 606/93, 606/94, 606/95
• US Class Current: 606/93
• 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 17/7097 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 17/8805 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 17/8822 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 17/8833 Osteosynthesis tools specially adapted for handling bone cement or fluid fillers; Means for supplying bone cement or fluid fillers to introducing tools, e.g. cartridge handling means
• 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 2017/00867 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 2002/4662 : 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 method for delivering material into bone deploys a cannula through soft tissue to establish a subcutaneous path into bone. The method deploys a cavity forming instrument through the cannula to form a cavity in cancellous bone. The method introduces a material into the cavity through the cannula, which includes the advancement of a tamping instrument through the cannula to urge material into the cavity.

Claims

1. A method comprising

deploying a cannula through soft tissue to establish a subcutaneous path into bone,

deploying a cavity forming instrument through the cannula to form a cavity in cancellous bone, and

introducing a material into the cavity through the cannula including injecting first and second portions of the material respectively into the cavity and into the interior of the cannula and then advancing a tamping instrument through the cannula to urge the second portion of the material from the interior of the cannula into the cavity.

2. A method according to claim 1

wherein introducing includes delivering material at a pressure no greater than about 360 psi.

3. A method according to claim 2

wherein introducing includes using a manual syringe.

4. A method according to claim 1

wherein the material comprises bone cement.

5. A method according to claim 1

wherein the material comprises autograft tissue.

6. A method according to claim 1

wherein the material comprises allograft tissue.

7. A method according to claim 1

wherein the material comprises synthetic bone substitute.

8. A method according to claim 1

wherein the material comprises medication.

9. A method according to claim 1

wherein the material comprises a material that sets to a hardened condition.

10. A method according to claim 1

wherein the cavity forming instrument includes an expandable body, and

wherein deploying the cavity forming instrument includes expanding the expandable body to form the cavity.

11. A method according to claim 10

wherein expanding the expandable body compresses cancellous bone.

12. A method according to claim 10

wherein expanding the expandable body moves fractured cortical bone.

13. A method according to claim 10

wherein the expandable body expands by inflation.

14. A method according to claim 10

wherein the expandable body includes a balloon.