Devices And Methods For Treating Bone Tissue

• US 20120330314A1
• Filed: 06/22/2012
• Published: 12/27/2012
• Est. Priority Date: 06/24/2011
• Status: Active Grant

• Current Assignee: IZI Medical Products LLC (Halma PLC)
• Original Assignee: Benvenue Medical, Inc. (Halma PLC)
• Inventors: Schaller, Laurent, Emery, Jeffrey L., Lee, James K., McGrath, Timothy J., Connolly, Ryan J.
• Granted Patent: US 8,814,873 B2
• Time in Patent Office: Days
• US Class Current: 606/79
• CPC Class Codes: A61B 17/16 Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans arthroscopic bone cutters A61B17/320016; dental implant drills potentially for other surgical use A61C8/0089; bone grinders A61F2/4644, A22C17/06; A61B17/1662 takes precedence over all other subgroups except A61B17/17
• CPC Class Codes: A61B 17/1642 for producing a curved bore
• CPC Class Codes: A61B 17/1671 for the spine
• CPC Class Codes: A61B 17/7094 Solid vertebral fillers; devices for inserting such fillers
• 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 2017/00867 shape memory effect for prostheses A61F2210/0014

Abstract

The present disclosure relates to devices and methods for creating channels within bone. One method for treating bone generally includes traversing an elongated member through cancellous bone of a vertebral body along a first generally non-linear path and then retracting the elongated member, thereby leaving a generally non-linear channel. The elongated member then is traversed through the cancellous bone along a second generally non-linear path, which second path does not completely coincide with the first path and then retracted along the second generally nonlinear path, thereby leaving a second generally non-linear channel. Optionally, bone filler material is deployed into the channels.

Claims

1. A method for creating channels within cancellous bone of a vertebral body, comprising:

traversing an elongated member through cancellous bone of a vertebral body along a first generally non-linear path;

retracting the elongated member along the first generally non-linear path, thereby leaving a first generally non-linear channel;

traversing the elongated member through the cancellous bone of the vertebral body along a second generally non-linear path, which second path does not completely coincide with the first path; and

retracting the elongated member along the second generally nonlinear path, thereby leaving a second generally non-linear channel.

2. The method of claim 1 in which first and second generally non-linear paths are generally arcuate.

3. The method of claim 1 in which the first and second generally non-linear channels are generally arcuate.

4. The method of claim 1 further including repeating the traversing and retracting steps until the desired number of channels are created in the cancellous bone.

5. The method of claim 1 in which the elongated member changes from a first generally linear configuration to a second generally arcuate configuration as the elongated member traverses through the cancellous bone.

6. The method of claim 5 in which the generally arcuate configuration of the elongated member is a generally looped configuration.

7. The method of claim 5 including traversing a desired portion of the elongated member in the arcuate configuration through the cancellous bone.

8. The method of claim 1 further including delivering bone filler material into the first and second generally non-linear channels.

10. The method of claim 1 in which the generally elongated member is comprised of a shape memory material.

9. The method of the 8 wherein the bone filler material is substantially directed into at least one of the generally non-linear channels.

11. A method of treating a vertebral body, comprising:

positioning at least a distal end portion of a cannula within a vertebral body, the distal end portion including an opening therein, and an elongated member located within the cannula;

deploying at least a distal end portion of the elongated member out of the opening in the distal end portion of the cannula and through bone structure of the vertebral body along a first path to form a first generally non-linear channel in the bone structure;

retracting the distal end portion of the elongated member into the cannula; and

redeploying at least the distal end portion of the elongated member out of the opening in the distal end portion of the cannula and through bone structure of the vertebral body in a second path to form a second generally non-linear channel, wherein the second channel does not completely coincide with the first channel.

12. The method of claim 11 in which the first and second paths are generally arcuate.

13. The method of claim 11 in which the first and second generally non-linear channels are generally arcuate.

14. The method of claim 11 further including repeating the deploying and retracting steps until the desired number of channels are created in the bone structure.

15. The method of claim 11 in which at least the distal end portion of the elongated member has a first generally linear configuration when within the cannula and changes to a second generally arcuate configuration as the elongated member is deployed out of the opening in the distal end portion of the cannula.

16. The method of claim 15 in which second generally arcuate configuration of the elongated member is a generally looped configuration.

17. The method of claim 16 in which the generally looped configuration includes a plurality of loops.

18. The method of claim 15 in which a desired portion of the elongate member in the second generally arcuate configuration is deployed out of the opening in the distal end portion of the cannula.

19. The method of claim 11 further including repositioning the cannula within the vertebral body prior to redeploying at least a distal portion of the elongated member.

20. The method of claim 19 in which the cannula has a longitudinal axis and the repositioning includes rotating the cannula about the longitudinal axis and/or moving the cannula axially along the longitudinal axis.

21. The method of claim 11 further including delivering bone filler material into the first and second generally non-linear channels.

22. The method of claim 21 in which the bone filler material is substantially directed into at least one of the generally non-linear channels.

23. The method of claim 11 in which the generally elongated member is comprised of a shape memory material.

24-59. -59. (canceled)