Structures for creating cavities in interior body regions

• US 20050043737A1
• Filed: 10/05/2004
• Published: 02/24/2005
• 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 A.
• Application Number:
  US10/958,944
• Publication Number:
  US 20050043737A1
• 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 having an axis and a distal end portion is adapted to be deployed inside a vertebral body through a cannula. A filament is carried by the distal end portion. A surface on the filament is movable between a collapsed condition sized and configured to be deployed with the shaft through the cannula and an extended position that extends radially from the shaft. A mechanism is coupled to the filament to extend the filament in situ radially from the shaft into contact with cancellous bone within the vertebral body. The surface, when extended, defines a structure capable of forming a cavity wholly within the vertebral body in the cancellous bone.

Claims

1. A system comprising

a cannula having an axis that establishes a percutaneous path leading into a vertebral body,

a shaft having an axis and a distal end portion adapted to be deployed inside the vertebral body through the cannula,

a filament carried by the distal end portion comprising a surface which is movable between a collapsed condition sized and configured to be deployed with the shaft through the cannula and an extended position that extends radially from the shaft, and

a mechanism coupled to the filament to extend the filament in situ radially from the shaft into contact with cancellous bone within the vertebral body, the surface, when extended, defining a structure capable of forming a cavity wholly within the vertebral body in the cancellous bone.

2. A system according to claim 1, further including

a tool to convey a filling material into the cavity.

3. A system according to claim 1

wherein the surface carries at least one marker to aid visualizing the structure inside bone.

4. A system according to claim 1 wherein the structure, when extended, is deployed at an axis that transverses the axis of the shaft.

5. A system according to claim 1

wherein the shaft is flexible.