Apparatus, kits, and methods for creating cavities in cancellous bone using an elongated loop structure or bristles

• US 7,879,038 B2
• Filed: 10/30/2007
• Issued: 02/01/2011
• Est. Priority Date: 04/06/1998
• Status: Expired due to Fees

• Current Assignee: Orthophoenix, LLC (Marathon Patent Group, Inc.)
• Original Assignee: Kyphon SARL (Medtronic Plc)
• Inventors: Scholten, Arie, Reiley, Mark A
• Primary Examiner(s): Robert; Eduardo C
• Assistant Examiner(s): COMSTOCK, DAVID C
• Application Number:
  US11/978,825
• Publication Number:
  US 20080269760A1
• Time in Patent Office: 1,190 Days
• Field of Search: 606 79- 81, 606/84, 606/85, 606/86.R, 606 92- 94, 606/159, 606/170, 606/180
• 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

Systems and method create a cavity in cancellous bone by use of a system or kit that includes a cannula having an axis that establishes a percutaneous path leading into bone and a shaft having a distal end portion carrying an elongated loop structure or bristles capable of extension from the shaft to create a cavity forming structure. The shaft is movable relative to the axis of the cannula to move the cavity forming structure when extended within cancellous bone to form a cavity in the cancellous bone. A tool is sized for passage through the cannula. The tool is capable of dispensing a filling material into the cavity.

Claims

1. A system for creating a cavity in cancellous bone comprising a cannula having an axis that establishes a percutaneous path leading into bone, a shaft having a distal end portion carrying an elongated loop structure capable of extension from the shaft to create a cavity forming structure, the shaft being sized for passage through the cannula into bone prior to extension of the elongated loop structure, a controller to extend the elongated loop structure from the shaft in situ within cancellous bone to create the cavity forming structure, the shaft being rotatable relative to the cannula about its axis to correspondingly rotate the cavity forming structure, when extended within cancellous bone, to form a cavity in the cancellous bone, and a tool sized for passage through the cannula, the tool being capable of dispensing a filling material into the cavity.

2. A system according to claim 1, wherein the elongated loop carries one or more radiological markers.

3. A system according to claim 1, wherein the shaft comprises a flexible material.

4. A system according to claim 1, wherein the elongated loop structure comprises a metal material.

5. A system according to claim 1, wherein the elongated loop comprises a plastic material.

6. A system according to claim 1, wherein the elongated loop structure comprises a shape memory material.

7. A kit comprising a cannula having an axis that establishes a percutaneous path leading into bone, a shaft having a distal end portion carrying an elongated loop structure capable of extension from the shaft to create a cavity forming structure, the shaft being sized for passage through the cannula into bone prior to extension of the elongated loop structure, a controller to extend the elongated loop structure from the shaft in situ within cancellous bone to create the cavity forming structure, the shaft being rotatable relative to the cannula about its axis to correspondingly rotate the cavity forming structure, when extended within cancellous bone, to form a cavity in the cancellous bone, a tool sized for passage through the cannula, the tool being capable of dispensing a filling material into the cavity, and instructions for creating a cavity in cancellous bone by deploying the cannula percutaneously to establish a path leading into bone, introducing the shaft by movement within and along the axis of the cannula to place the elongated loop structure inside cancellous bone, extending the cavity forming structure in situ within the cancellous bone from the shaft, moving the shaft to form a cavity in the cancellous bone, and introducing the tool by movement within and along the axis of the cannula, and conveying filling material through the tool into the cavity.

8. A kit according to claim 7, wherein the elongated loop structure carries one or more radiological markers.

9. A kit according to claim 7, wherein the shaft comprises a flexible material.

10. A kit according to claim 7, wherein the elongated loop structure comprises a metal material.

11. A kit according to claim 7, wherein the elongated loop comprises a plastic material.

12. A kit according to claim 7, wherein the elongated loop structure comprises a shape memory material.