Impaction systems

• US 10,076,424 B2
• Filed: 12/21/2015
• Issued: 09/18/2018
• Est. Priority Date: 09/07/2007
• Status: Active Grant

• Current Assignee: Intrinsic Therapeutics, Inc.
• Original Assignee: Intrinsic Therapeutics, Inc.
• Inventors: Lambrecht, Gregory H., Einhorn, Jacob, Tarapata, Christopher J., Moore, Robert Kevin, Kavanaugh, Sean M.
• Primary Examiner(s): Beccia, Christopher
• Application Number:
  US14/976,396
• Publication Number:
  US 20160184110A1
• Time in Patent Office: 1,002 Days
• CPC Class Codes: A61B 17/0642 for bones, e.g. for osteosynthesis or connecting tendon to bone
• CPC Class Codes: A61B 17/70 Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
• CPC Class Codes: A61B 17/7056 Hooks with specially-designed bone-contacting part
• CPC Class Codes: A61B 17/809 with bone-penetrating elements, e.g. blades or prongs bone staples A61B17/0642; intramedullary nails with a plate at an end A61B17/7233
• CPC Class Codes: A61B 17/86 Pins or screws or threaded wires; nuts therefor A61B17/72 take precedence
• CPC Class Codes: A61B 2017/922 Devices for impaction, impact element
• 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 2/4465 having a circular or kidney shaped cross-section substantially perpendicular to the axis of the spine
• CPC Class Codes: A61F 2/447 substantially parallelepipedal, e.g. having a rectangular or trapezoidal cross-section
• CPC Class Codes: A61F 2/4611 of spinal prostheses
• CPC Class Codes: A61F 2002/30062 (bio)absorbable, biodegradable, bioerodable, (bio)resorbable, resorptive
• CPC Class Codes: A61F 2002/3008 radio-opaque, e.g. radio-opaque markers
• CPC Class Codes: A61F 2002/30133 kidney-shaped or bean-shaped
• CPC Class Codes: A61F 2002/30176 V-shaped
• CPC Class Codes: A61F 2002/30451 soldered or brazed or welded
• CPC Class Codes: A61F 2002/30461 sutured, ligatured or stitched
• CPC Class Codes: A61F 2002/30471 connected by a hinged linkage mechanism, e.g. of the single-bar or multi-bar linkage type
• CPC Class Codes: A61F 2002/305 Snap connection
• CPC Class Codes: A61F 2002/30578 : having apertures, e.g. for receiving fixation screws
• CPC Class Codes: A61F 2002/30579 : with mechanically expandable devices, e.g. fixation devices
• CPC Class Codes: A61F 2002/30738 : Sleeves
• CPC Class Codes: A61F 2002/30785 : parallel
• CPC Class Codes: A61F 2002/30787 : inclined obliquely with respect to each other
• CPC Class Codes: A61F 2002/30841 : Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes
• CPC Class Codes: A61F 2002/3085 : with a threaded, e.g. self-tapping, bone-engaging surface, e.g. external surface
• CPC Class Codes: A61F 2002/30884 : Fins or wings, e.g. longitudinal wings for preventing rotation within the bone cavity
• CPC Class Codes: A61F 2002/30892 : parallel
• CPC Class Codes: A61F 2002/30925 : etched
• CPC Class Codes: A61F 2002/3093 : for promoting ingrowth of bone tissue
• CPC Class Codes: A61F 2002/30932 : for retarding or preventing ingrowth of bone tissue
• CPC Class Codes: A61F 2002/4435 : Support means or repair of the natural disc wall, i.e. annulus, e.g. using plates, membranes or meshes
• 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 2002/4495 : having a fabric structure, e.g. made from wires or fibres
• CPC Class Codes: A61F 2210/0004 : bioabsorbable
• CPC Class Codes: A61F 2220/0025 : Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
• CPC Class Codes: A61F 2220/0058 : soldered or brazed or welded
• 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 2220/0091 : connected by a hinged linkage mechanism, e.g. of the single-bar or multi-bar linkage type
• CPC Class Codes: A61F 2230/0015 : Kidney-shaped, e.g. bean-shaped
• CPC Class Codes: A61F 2230/0054 : V-shaped
• CPC Class Codes: A61F 2250/0098 : radio-opaque, e.g. radio-opaque markers
• CPC Class Codes: A61F 2310/00017 : Iron- or Fe-based alloys, e.g. stainless steel
• CPC Class Codes: A61F 2310/00023 : Titanium or titanium-based alloys, e.g. Ti-Ni alloys
• CPC Class Codes: A61F 2310/00029 : Cobalt-based alloys, e.g. Co-Cr alloys or Vitallium
• CPC Class Codes: A61F 2310/00407 : Coating made of titanium or of Ti-based alloys
• CPC Class Codes: A61F 2310/00796 : Coating or prosthesis-covering structure made of a phosphorus-containing compound, e.g. hydroxy(l)apatite
• CPC Class Codes: A61F 2310/00976 : Coating or prosthesis-covering structure made of proteins or of polypeptides, e.g. of bone morphogenic proteins BMP or of transforming growth factors TGF

Abstract

Methods of inserting and retaining interbody fusion material are disclosed. In some embodiments, the methods include inserting an anchored implant comprising a bone anchoring portion and an engagement portion. A method may also include inserting at least one bone fusion material within a disc space between two adjacent vertebral bodies. In some embodiments, a method includes driving the bone anchoring portion into an outer surface of at least one of the adjacent vertebral bodies and recessing the bone anchoring portion within the outer surface of the at least one adjacent vertebral body.

Claims

1. An impaction device comprising:

an engagement member configured to engage soft tissue at a location of a defect of an anulus fibrosus of an intervertebral disc; and

a bone anchoring member configured to be implanted within an outer surface of a vertebral body adjacent the defect such that no portion of the bone anchoring member lies beyond the outer surface of the vertebral body;

wherein the bone anchoring member is directly coupled to the engagement member,

wherein the engagement member is configured to displace the soft tissue from the defect into the disc space of the intervertebral disc and to contain the soft tissue, thereby preventing the soft tissue from exiting through the defect.

2. The impaction device of claim 1, wherein the bone anchoring member comprises a plate-like horizontal keel having a proximal leading end and a distal trailing end and a vertical member extending vertically from the trailing end of the horizontal keel.

3. The impaction device of claim 2, wherein the horizontal keel comprises a first modified surface region on an upper surface of the leading end of the horizontal keel and a second modified surface region on a lower surface of the trailing end of the horizontal keel.

4. The impaction device of claim 3, wherein the first and second modified surface regions comprise features selected from the group consisting of:

grooves, voids, ridges and protrusions.

5. The impaction device of claim 1, wherein the engagement member comprises a polymer mesh and wherein the bone anchoring member is comprises titanium.

6. The impaction device of claim 1, wherein the engagement member and the bone anchoring member are removably coupled.

7. The impaction device of claim 2, wherein the horizontal keel comprises a coating of osteoinductive or osteoconductive factors.

8. The impaction device of claim 2, wherein the vertical member comprises a tapered cross section that tapers from a wider cross section at an intersection with the horizontal keel to a narrower cross-section as the vertical member extends away from the horizontal keel.

9. The impaction device of claim 1, wherein the engagement member is pivotably coupled to the bone anchoring member.

10. An impaction device comprising:

an anchored implant configured to facilitate fusion between adjacent vertebral bodies, the intervertebral disc having a disc space configured to be accessed and to receive bone graft material, the anchored implant comprising;

a bone anchoring portion configured to be driven into an outer surface of one of the two adjacent vertebral bodies along a direction of access and to be recessed within the outer surface such that no portion of the bone anchoring portion lies beyond the outer surface of the one of the two adjacent vertebral bodies; and

an engagement portion coupled to the bone anchoring portion such that, upon driving the bone anchoring portion into the outer surface of one of the two adjacent vertebral bodies, the engagement portion is configured to displace the bone graft material into the disc space.

11. The impaction device of claim 10, wherein the engagement portion is entirely rigid.

12. The impaction device of claim 10, wherein the engagement portion is entirely flexible.

13. The impaction device of claim 10, wherein the engagement portion is partially rigid and partially flexible.

14. The impaction device of claim 10, wherein the bone anchoring member comprises a planar horizontal member having a proximal leading end and a distal trailing end and a vertical member extending vertically from the trailing end of the planar horizontal member.

15. The impaction device of claim 14, wherein the planar horizontal member comprises a first modified surface region on an upper surface of the leading end of the planar horizontal member and a second modified surface region on a lower surface of the trailing end of the planar horizontal member.

16. The impaction device of claim 15, wherein the first and second modified surface regions comprise features selected from the group consisting of:

grooves, voids, ridges and protrusions.

17. The impaction device of claim 10, wherein the engagement portion and the bone anchoring portion form a unitary construct.

18. The impaction device of claim 10, wherein the engagement portion and the bone anchoring portion are removably coupled.

19. The impaction device of claim 10, wherein the engagement portion comprises a polymer mesh, and wherein the anchoring portion comprises titanium.

20. A system comprising:

the impaction device of claim 10; and

at least a second anchored implant configured to facilitate fusion between the adjacent vertebral bodies, the second anchored implant comprising;

a second bone anchoring portion configured to be driven into the outer surface of the other one of the two adjacent vertebral bodies along a second direction of access and to be recessed within the outer surface such that no portion of the second bone anchoring portion lies beyond the outer surface of the other one of the two adjacent vertebral bodies; and

a second engagement portion coupled to the second bone anchoring portion such that, upon driving the second bone anchoring portion into the outer surface of the other one of the two adjacent vertebral bodies, the second engagement portion is configured to displace the bone graft material into the disc space.