Surgical instrumentation and method for treatment of a spinal structure

• US 20060116689A1
• Filed: 06/16/2005
• Published: 06/01/2006
• Est. Priority Date: 06/16/2004
• Status: Abandoned Application

• Current Assignee: SDGI Holdings Incorporated (Medtronic Plc)
• Original Assignee: SDGI Holdings Incorporated (Medtronic Plc)
• Inventors: Allard, Randy N., Embry, Jill M., Serbousek, Jon C., Albans, Willliam J.
• Application Number:
  US11/154,319
• Publication Number:
  US 20060116689A1
• Time in Patent Office: Days
• US Class Current: 606/92
• CPC Class Codes: A61B 17/00234 for minimally invasive surgery A61B17/0218, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence
• CPC Class Codes: A61B 17/025 Joint distractors
• CPC Class Codes: A61B 17/1617 with mobile or detachable parts
• CPC Class Codes: A61B 17/1671 for the spine
• CPC Class Codes: A61B 17/29 Forceps for use in minimally invasive surgery
• CPC Class Codes: A61B 17/3417 Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating syringe needles A61M5/32; dilators A61M29/00
• CPC Class Codes: A61B 17/3468 for implanting or removing devices, e.g. prostheses, implants, seeds, wires devices for implanting seeds A61M37/0069
• CPC Class Codes: A61B 17/3472 for bones, e.g. intraosseus injections
• CPC Class Codes: A61B 17/8811 characterised by the introducer tip, i.e. the part inserted into or onto the bone
• CPC Class Codes: A61B 17/8819 characterised by the introducer proximal part, e.g. cannula handle, or by parts which are inserted inside each other, e.g. stylet and cannula A61B17/8825 takes precedence
• CPC Class Codes: A61B 17/8858 laterally or radially expansible inflatable A61B17/8855
• CPC Class Codes: A61B 2017/00261 Discectomy
• CPC Class Codes: A61B 2017/00867 shape memory effect
• CPC Class Codes: A61B 2017/0256 for the spine
• CPC Class Codes: A61B 2090/034 abutting on parts of the device itself
• CPC Class Codes: A61B 2090/0801 Prevention of accidental cutting or pricking
• 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 2002/4635 using minimally invasive surgery

Abstract

Embodiments of the invention include instrumentation and methods for treatment of a spinal structure or other orthopedic structures. An elongate member including a deformable distal portion having an initial configuration for placement within a spinal structure or other orthopedic structures, and a deformed configuration wherein the distal portion is outwardly deformed is provided. The elongated member may be used to access the interior of the spinal structure or other orthopedic structures and to manipulate tissue within the structure.

Claims

1. A kit for treatment of the spine, comprising:

a cannula for maintaining a passageway to a portion of the spine to be treated;

a surgical instrument for providing surgical access to the spine, the instrument being operable through the cannula;

a bone filler injector; and

a tube that provides a conduit between the bone filler injector and the cannula;

wherein the tube is extendable through the cannula to a position adjacent to the portion of the spine to be treated.

2. The kit of claim 1 wherein at least a portion of a distal end of the cannula has an opening through which the instrument operates.

3. The kit of claim 2 wherein the opening is in a distal most portion of the distal end of the cannula.

4. The kit of claim 1 wherein the surgical instrument is a stylet.

5. The kit of claim 1 wherein the surgical instrument is a spring.

6. The kit of claim 1 wherein the bone filler injector provides bone filler at a controlled pressure and volume.

7. The kit of claim 1 wherein the tube has an outside diameter of greater than 0.5 mm less than the inside diameter of the cannula.

8. The kit of claim 1 wherein the cannula has an opening through which a bone filler material is injectable into the spine.

9. The kit of claim 8 wherein the opening is in a distal most portion of the distal end of the cannula.

10. The kit of claim 1 wherein the cannula has an opening through which the tube may be extended.

11. The kit of claim 10 wherein the opening is in a distal most portion of the distal end of the cannula.

12. The kit of claim 1 wherein the tube is a flexible tube.

13. A method of performing a biopsy, comprising:

providing a medical instrument comprising;

a cannula member extending along a longitudinal axis and including a distal portion, said cannula member defining an axial passage and a transverse opening positioned adjacent said distal portion and communicating with said axial passage; and

an actuator member removably positioned within said axial passage of said cannula member and including a deformable portion positioned adjacent said transverse opening, said deformable portion being transitionable between an initial configuration for placement within a spinal structure and a deformed configuration defining a transverse projection extending through said transverse opening in said cannula member; and

selectively removing tissue on which a biopsy is to be accomplished from said cannula member.

14. A method for treatment of the spinet comprising:

providing an instrument defining a cannula passage extending along a longitudinal axis and including a deformable distal portion having an insertion configuration and a deformed configuration;

positioning the distal portion of the instrument within a spinal structure while in the insertion configuration;

transitioning the distal portion of the instrument toward the deformed configuration while simultaneously rotating the instrument about the longitudinal axis to form a volume of loosened tissue within the spinal structure; and

delivering a material through the cannula passage and into the spinal structure.

15. The method of claim 14 further comprising removing a portion of the loosened tissue from the spinal structure prior to delivering a material into the spinal structure.

16. The method of claim 15 wherein removing a portion of the loosened tissue includes suctioning loosened tissue.

17. The method of claim 15 wherein removing a portion of the loosened tissue includes mechanically removing loosened tissue.

18. A method for treatment of the spine, comprising:

providing an instrument defining a cannula passage extending along a longitudinal axis and including a deformable distal portion having an insertion configuration and a deformed configuration;

positioning the distal portion of the instrument within a spinal structure while in the insertion configuration;

activating the instrument to loosen tissue within the spinal structure;

removing a portion of the loosened tissue from the spinal structure; and

delivering a material through the cannula passage and into the spinal structure.

19. The method of claim 18 further comprising injecting a fluid into the spinal structure to prepare the structure to receive a delivered material.

20. The method of claim 19 wherein injecting a fluid includes injecting a liquid.

21. The method of claim 19 wherein injecting a fluid includes injecting a gas.

22. A method for treatment of the spine, comprising:

providing an instrument defining a cannula passage extending along a longitudinal axis;

positioning the distal portion of the instrument within a spinal structure while in the insertion configuration;

delivering a first portion of filler material through a tube extended through the cannula to a distal end of an accessible portion of the spinal structure;

withdrawing the tube proximally relative to the cannula; and

delivering a second portion of filler material through the tube and into the spinal structure.