Devices for limiting the movement of material introduced between layers of spinal tissue

• US 7,967,865 B2
• Filed: 02/15/2010
• Issued: 06/28/2011
• Est. Priority Date: 08/16/2005
• Status: Active Grant

• Current Assignee: IZI Medical Products LLC (Halma PLC)
• Original Assignee: Benvenue Medical, Inc. (Halma PLC)
• Inventors: Schaller, Laurent
• Primary Examiner(s): Manahan; Todd E
• Assistant Examiner(s): HARVEY, JULIANNA NANCY
• Application Number:
  US12/705,901
• Publication Number:
  US 20100174289A1
• Time in Patent Office: 498 Days
• Field of Search: 623 1711- 1716
• US Class Current: 623/17.11
• CPC Class Codes: A61B 17/70 Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
• 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 17/8852 capable of being assembled or enlarged, or changing shape, inside the bone or disc
• CPC Class Codes: A61B 2017/00867 shape memory effect for prostheses A61F2210/0014
• CPC Class Codes: A61B 2017/0256 for the spine
• 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 2/442 Intervertebral or spinal discs, e.g. resilient non-disc-shaped intervertebral inflatable pockets A61F2/441; non-disc-shaped intervertebral fusion implants A61F2/4455
• CPC Class Codes: A61F 2/4455 for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages intervertebral discs A61F2/442
• CPC Class Codes: A61F 2/4611 of spinal prostheses
• CPC Class Codes: A61F 2002/2835 Bone graft implants for filling a bony defect or an endoprosthesis cavity, e.g. by synthetic material or biological material
• CPC Class Codes: A61F 2002/30092 using shape memory or superelastic materials, e.g. nitinol
• CPC Class Codes: A61F 2002/30153 rectangular
• CPC Class Codes: A61F 2002/30235 tubular, e.g. sleeves
• CPC Class Codes: A61F 2002/30263 cubical
• CPC Class Codes: A61F 2002/30289 helically-coiled
• CPC Class Codes: A61F 2002/30462 retained or tied with a rope, string, thread, wire or cable
• CPC Class Codes: A61F 2002/3052 unrestrained in only one direction, e.g. moving unidirectionally
• CPC Class Codes: A61F 2002/30594 slotted, e.g. radial or meridian slot ending in a polar aperture, non-polar slots, horizontal or arcuate slots
• CPC Class Codes: A61F 2002/30601 telescopic
• CPC Class Codes: A61F 2002/30677 : Means for introducing or releasing pharmaceutical products, e.g. antibiotics, into the body
• CPC Class Codes: A61F 2002/30772 : Apertures or holes, e.g. of circular cross section
• CPC Class Codes: A61F 2002/4415 : elements of the prosthesis being arranged in a chain like manner
• CPC Class Codes: A61F 2002/448 : comprising multiple adjacent spinal implants within the same intervertebral space or within the same vertebra, e.g. comprising two adjacent spinal implants
• CPC Class Codes: A61F 2002/4627 : with linear motion along or rotating motion about the instrument axis or the implantation direction, e.g. telescopic, along a guiding rod, screwing inside the instrument
• CPC Class Codes: A61F 2002/4635 : using minimally invasive surgery
• CPC Class Codes: A61F 2002/4683 : by applying ultrasonic vibrations
• CPC Class Codes: A61F 2002/4688 : having operating or control means
• CPC Class Codes: A61F 2210/0014 : using shape memory or superelastic materials, e.g. nitinol
• CPC Class Codes: A61F 2210/0085 : hardenable in situ, e.g. epoxy resins
• CPC Class Codes: A61F 2220/0025 : Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
• CPC Class Codes: A61F 2220/0075 : sutured, ligatured or stitched, retained or tied with a rope, string, thread, wire or cable
• CPC Class Codes: A61F 2230/0019 : rectangular
• CPC Class Codes: A61F 2230/0069 : cylindrical
• CPC Class Codes: A61F 2230/0084 : cubical
• CPC Class Codes: A61F 2230/0091 : helically-coiled or spirally-coiled, i.e. having a 2-D spiral cross-section
• CPC Class Codes: A61F 2250/0067 : Means for introducing or releasing pharmaceutical products into the body
• CPC Class Codes: A61F 2310/00293 : containing a phosphorus-containing compound, e.g. apatite

Abstract

Devices for limiting the movement of flowable material introduced into or between tissue layers of the human spine. The devices can include at least one generally elongated member having a pre-deployed configuration for insertion into or between tissue layers of the human spine and a deployed configuration in which the elongated member forms a barrier that limits the movement of flowable material introduced into or between the tissue layers.

Claims

1. An intravertebral system for treating a vertebral body, comprising:

an elongated guide member having a distal end portion of a material that allows the distal end portion of the guide member to change between an insertion configuration for insertion into a vertebral body and an inserted configuration within the vertebral body, which inserted configuration comprises a plurality of generally horizontally-disposed windings;

an elongated intravertebral implant independently movable longitudinally relative to the distal end portion of the guide member for advancement therealong while the guide member is stationary, the implant being constrained by the guide member to conform to the configuration of the distal end portion of the guide member so that as the implant is advanced along the distal end portion of the guide member the implant conforms to the configuration of the guide member to form an inserted structure comprising a plurality of generally horizontally-disposed windings within the vertebral body, said structure defining an interior resident volume within the windings adapted to receive flowable material and the structure being configured to limit the movement of flowable material from the resident volume.

2. The intravertebral system of claim 1 in which at least some of the distal end portion of the guide member is substantially linear in the insertion configuration.

3. The intravertebral system of claim 1 in which the distal end portion of the guide member is biased to form the inserted configuration.

4. The intravertebral system of claim 1 in which at least the distal end portion of the guide member is comprised of a shape memory material.

5. The intravertebral system of claim 1 in which the windings of the structure extending in a generally circular direction.

6. The intravertebral system of claim 1 in which at least one of the windings of the structure has at least one adjacent winding thereabove or therebelow and the at least one winding being in contact with the adjacent winding.

7. The intravertebral system of claim 1 in which the elongated implant has a proximal end, a distal end and a longitudinal passageway therethrough, wherein the passageway is configured to receive the guide member for advancement of the elongated implant along the guide member.

8. The intravertebral system of claim 1 in which the elongated implant includes a longitudinal passageway in fluid communication with the resident volume, the passageway configured to receive the bone filler therethrough and into the resident volume.

9. The intravertebral system of claim 1 in which the guide member is removable from the structure.

10. An intravertebral system for treating a vertebral body, comprising:

an elongated guide member having a distal end portion of a material that allows the distal end portion of the guide member to change between an insertion configuration for insertion into the vertebral body and an arcuate inserted configuration within the vertebral body; and

an elongated intravertebral implant independently movable longitudinally relative to the guide member for advancement along the guide member while the guide member is stationary, the implant being constrained by the guide member and sufficiently flexible to conform to the configuration of the distal end portion of the guide member so that as the implant is advanced along the distal end portion of the guide member the implant conforms to the inserted configuration, which inserted configuration is shaped to form the implant into an arcuate structure that extends greater than 360 degrees within the vertebral body, the arcuate structure defining an internal resident volume adapted to receive bone filler and the arcuate structure being configured to limit the movement of bone filler from the resident volume.

11. The intravertebral system of claim 10 in which at least some of the distal end portion of the guide member is substantially linear in the insertion configuration.

12. The intravertebral system of claim 10 in which the distal end portion of the guide member is biased to form the inserted configuration.

13. The intravertebral system of claim 10 in which at least the distal end portion of the guide member is comprised of a shape memory material.

14. The intravertebral system of claim 10 in which the elongated implant has a proximal end, a distal end and a longitudinal passageway therethrough, wherein the passageway is configured to receive the guide member for advancement of the elongated implant along the guide member.

15. The intravertebral system of claim 10 in which the elongated implant includes a longitudinal passageway in fluid communication with the resident volume, the passageway configured to receive the bone filler therethrough and into the resident volume.

16. The intravertebral system of claim 10 in which the guide member is removable from the structure.