Apparatus and method for creating cavities in interior body regions

• US 20070198020A1
• Filed: 04/24/2007
• Published: 08/23/2007
• Est. Priority Date: 04/06/1998
• Status: Abandoned Application

• Current Assignee: Orthophoenix, LLC (Marathon Patent Group, Inc.)
• Original Assignee: Kyphon Incorporated (Medtronic Plc)
• Inventors: Scholten, Arie, Reiley, Mark
• Application Number:
  US11/789,226
• Publication Number:
  US 20070198020A1
• Time in Patent Office: Days
• US Class Current: 606/79
• CPC Class Codes: A61B 17/1617 with mobile or detachable parts
• CPC Class Codes: A61B 17/164 intramedullary
• CPC Class Codes: A61B 17/1644 using fluid other than turbine drive fluid
• CPC Class Codes: A61B 17/1671 for the spine
• CPC Class Codes: A61B 17/22012 in direct contact with, or very close to, the obstruction or concrement for removing obstructions in blood vessels by laser A61B18/245
• CPC Class Codes: A61B 17/320016 Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes A61B10/0233, A61B17/29, A61B17/3207 take precedence
• CPC Class Codes: A61B 17/32056 Surgical snare instruments for removing or smashing calculi A61B2017/2212; tonsillotomes A61B17/26
• CPC Class Codes: A61B 17/320758 with a rotating cutting instrument, e.g. motor driven A61B17/320725, A61B17/32075 and A61B17/320783 take precedence; for removing intra-ocular material A61F9/00763; endoscopic rotatable cutting instruments A61B17/32002
• 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 18/24 with a catheter A61B18/26, A61B18/28 take precedence
• CPC Class Codes: A61B 2017/00261 Discectomy
• CPC Class Codes: A61B 2017/22014 the ultrasound transducer being outside patient's body; with an ultrasound transmission member; with a wave guide; with a vibrated guide wire not applied in A61B17/22012
• CPC Class Codes: A61B 2017/320008 Scrapers
• CPC Class Codes: A61B 2017/320733 with a flexible cutting or scraping element, e.g. with a whip-like distal filament member
• CPC Class Codes: A61B 2217/005 with suction drainage system
• CPC Class Codes: A61B 2217/007 with irrigation system
• CPC Class Codes: A61B 50/30 Containers specially adapted for packaging, protecting, dispensing, collecting or disposing of surgical or diagnostic appliances or instruments for wound clamps A61B17/10; for ligaturing clips A61B17/122; packages or dispensers for surgical gloves or finger-stalls A61B42/40
• CPC Class Codes: A61F 2/44 for the spine, e.g. vertebrae, spinal discs
• CPC Class Codes: A61F 2/441 made of inflatable pockets or chambers filled with fluid, e.g. with hydrogel
• 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 2/4611 : of spinal prostheses
• CPC Class Codes: A61F 2002/30583 : filled with hardenable fluid, e.g. curable in-situ
• CPC Class Codes: A61F 2002/30677 : Means for introducing or releasing pharmaceutical products, e.g. antibiotics, into the body
• CPC Class Codes: A61F 2210/0085 : hardenable in situ, e.g. epoxy resins

Abstract

A shaft member is sized and configured for introduction through a percutaneous access path into a cancellous bone volume. The shaft has an elongated axis. A cutting blade is sized and configured to be carried by the shaft member and project radially outward of the elongated axis into contact with cancellous bone. The cutting blade is capable of cutting cancellous bone in a path about the elongated axis in response to rotation of the shaft member within cancellous bone.

Claims

1. An assembly comprising

a shaft member sized and configured for introduction through a percutaneous access path into a cancellous bone volume, the shaft having an elongated axis, and

a cutting blade sized and configured to be carried by the shaft member and project radially outward of the elongated axis into contact with cancellous bone, the cutting blade being capable of cutting cancellous bone in a path about the elongated axis in response to rotation of the shaft member within cancellous bone.

2. An assembly according to claim 1

further including a tool to convey a volume of bone filling material into cancellous bone cut by the cutting blade.

3. An assembly according to claim 1

wherein the cutting blade comprises a metal material.

4. An assembly according to claim 1

wherein the cutting blade comprises a plastic material.

5. A system according to claim 1

wherein the cutting blade comprises a curved surface.

6. A system according to claim 1

wherein the cutting blade defines at least a portion of a loop.

7. A system according to claim 1

wherein the cutting blade comprises a round cross section.

8. A system according to claim 1

wherein the cutting blade comprises a rectilinear cross section.

9. A system according to claim 1

wherein the cutting blade is pitched relative to the elongated axis.

10. A system according to claim 1

wherein at least a portion of the cutting blade is radiopaque.

11. A system according to claim 1

wherein at least a portion of the cutting blade includes a material that permits remote visualization of the cutting blade.

12. A system according to claim 1

wherein the path cut by the cutting blade forms, at least in part, a cavity.

15. A system according to claim 1

wherein rotation of the shaft forms, at least in part, a cavity in cancellous bone.

13. A method comprising

providing a tool comprising a shaft member having an elongated axis and a cutting blade carried by the shaft member and project radially outward of the elongated axis into contact with cancellous bone, the cutting blade being capable of cutting cancellous bone in a path about the elongated axis in response to rotation of the shaft member within cancellous bone,

establishing a percutaneous access path leading into a cancellous bone volume,

introducing the tool through the access path, and

rotating the shaft to cut cancellous bone in a path about the elongated axis.

14. A method according to claim 13

further including conveying a bone filling material into cancellous bone cut by the cutting blade.