Bi-directional fixating transvertebral body screws and posterior cervical and lumbar interarticulating joint calibrated stapling devices for spinal fusion

• US 7,942,903 B2
• Filed: 08/21/2007
• Issued: 05/17/2011
• Est. Priority Date: 04/12/2005
• Status: Active Grant

• Current Assignee: Moskowitz Family LLC
• Original Assignee: Ahmnon D. Moskowitz, Mosheh T. Moskowitz, Nathan C. Moskowitz, Pablo A. Valdivia Y. Alvarado
• Inventors: Alvarado, Pablo A Valdivia Y, Moskowitz, Mosheh T., Moskowitz, Nathan C., Moskowitz, Ahmnon D.
• Primary Examiner(s): Philogene; Pedro
• Application Number:
  US11/842,855
• Publication Number:
  US 20080033440A1
• Time in Patent Office: 1,365 Days
• Field of Search: 606/246, 606/301, 606/247, 606/250, 606/251, 606/252, 606/99, 606/248, 623/17.11, 623/17.15, 623/17.16
• US Class Current: 606/251
• CPC Class Codes: A61B 17/0642 for bones, e.g. for osteosynthesis or connecting tendon to bone
• CPC Class Codes: A61B 17/0644 penetrating the tissue, deformable to closed position
• CPC Class Codes: A61B 17/1757 for the spine
• CPC Class Codes: A61B 17/7064 Devices acting on, attached to, or simulating the effect of, vertebral facets; Tools therefor
• 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 17/8635 Tips of screws
• CPC Class Codes: A61B 17/8875 Screwdrivers, spanners or wrenches
• CPC Class Codes: A61B 17/8894 holding the implant into or through which the screw is to be inserted A61B17/7082, A61B17/7091 take precedence
• CPC Class Codes: A61B 17/92 Impactors or extractors, e.g. for removing intramedullary devices insertion or extraction of artificial joints A61F2/4603
• CPC Class Codes: A61B 2017/00407 Ratchet means
• CPC Class Codes: A61B 2017/0641 having at least three legs as part of one single body
• CPC Class Codes: A61B 2017/0648 threaded, e.g. tacks with a screw thread
• CPC Class Codes: A61B 2017/922 Devices for impaction, impact element
• 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 2002/2835 Bone graft implants for filling a bony defect or an endoprosthesis cavity, e.g. by synthetic material or biological material
• CPC Class Codes: A61F 2002/30133 kidney-shaped or bean-shaped
• CPC Class Codes: A61F 2002/30387 Dovetail connection
• CPC Class Codes: A61F 2002/30448 : using adhesives
• CPC Class Codes: A61F 2002/30507 : using a threaded locking member, e.g. a locking screw or a set screw
• CPC Class Codes: A61F 2002/3055 : for adjusting length
• CPC Class Codes: A61F 2002/30579 : with mechanically expandable devices, e.g. fixation devices
• CPC Class Codes: A61F 2002/30593 : hollow
• CPC Class Codes: A61F 2002/30604 : modular
• CPC Class Codes: A61F 2002/30772 : Apertures or holes, e.g. of circular cross section
• CPC Class Codes: A61F 2002/30878 : with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
• CPC Class Codes: A61F 2002/30879 : Ribs
• CPC Class Codes: A61F 2002/30904 : serrated profile, i.e. saw-toothed
• 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 2002/4681 : by applying mechanical shocks, e.g. by hammering
• CPC Class Codes: A61F 2002/4687 : Mechanical guides for implantation instruments
• CPC Class Codes: A61F 2220/0025 : Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
• CPC Class Codes: A61F 2220/005 : using adhesives
• CPC Class Codes: A61F 2230/0015 : Kidney-shaped, e.g. bean-shaped
• CPC Class Codes: A61F 2250/0007 : for adjusting length

Abstract

A self-drilling bone fusion screw apparatus is disclosed which includes at least first and second sliding boxes. A first screw member having a tapered end and a threaded body is disposed within the first sliding box, and a second screw member having a tapered end and a threaded body disposed within the second sliding box. An adjuster adjusts the height of the sliding boxes. The screw members are screwed into vertebral bodies in order to fuse the vertebral bodies together. A plurality of the self-drilling bone fusion screw apparatuses may be attached together and/or integrated via a plate or cage. Also disclosed is a cervical facet staple that includes a curved staple base and at least two prongs attached to the bottom surface of the curved staple base.

Claims

1. A self-drilling bone fusion screw apparatus comprising:

a first sliding triangular portion, wherein the first sliding triangular portion includes a first integral screw guide having a first predetermined angle and a second integral screw guide having a second predetermined angle;

a second sliding triangular portion, positioned relative to the first sliding triangular portion;

a first screw member and a second screw member each having a tapered end and a threaded body, the first screw member disposed in the first integral screw guide at the first predetermined angle and the second screw member disposed in the second integral screw guide at the second predetermined angle, wherein the first screw member traverses the first sliding triangular portion and the second screw member traverses the first sliding triangular portion and the second sliding triangular portion; and

an adjuster that adjusts a sliding position of the first sliding triangular portion with respect to the second sliding triangular portion to simultaneously adjust a height and a depth of the self-drilling bone fusion screw apparatus.

2. The self-drilling bone fusion screw apparatus according to claim 1 wherein the first and second screw members are medially aligned.

3. The self-drilling bone fusion screw apparatus according to claim 1 wherein at least one of the first and second screw members is laterally aligned.

4. The self-drilling bone fusion screw apparatus according to claim 3 wherein both the first and second screw members are laterally aligned.

5. The self-drilling bone fusion screw apparatus according to claim 1, wherein one of the first and second screw members is laterally aligned and the other screw member is medially aligned.

6. The self-drilling bone fusion screw apparatus according to claim 1, wherein each of the first and second sliding triangular portions has a substantially triangularly shape.

7. The self-drilling bone fusion screw apparatus according to claim 6, wherein the first sliding triangular portion and the second sliding triangular portion include a sliding rail and ridged surfaces.

8. The self-drilling bone fusion screw apparatus according to claim 7, wherein the first sliding triangular portion and the second sliding triangular portion include holes for bone grafts.

9. The self-drilling bone fusion screw apparatus according to claim 8 wherein the adjuster includes a screw.

10. The self-drilling bone fusion screw apparatus according to claim 1, wherein one of the first sliding triangular portion and the second sliding triangular portion includes a sliding rail, and

wherein the other of the first sliding triangular portion and the second sliding triangular portion includes a rail insert that engages the sliding rail.

11. The self-drilling bone fusion screw apparatus according to claim 1, wherein one of the first sliding triangular portion and the second sliding triangular portion includes a plurality of sliding rails disposed on a side facing the other of the first sliding triangular portion and the second sliding triangular portion, and

wherein the other of the first sliding triangular portion and the second sliding triangular portion includes a plurality of rail inserts that engage the plurality of sliding rails.

12. The self-drilling bone fusion screw apparatus according to claim 1, wherein one of the first sliding triangular portion and the second sliding triangular portion includes an external surface having a plurality of ridges.

13. The self-drilling bone fusion screw apparatus according to claim 1, wherein each of the first sliding triangular portion and the second sliding triangular portion includes an external surface having a plurality of ridges.

14. The self-drilling bone fusion screw apparatus according to claim 1, wherein one of the first sliding triangular portion and the second sliding triangular portion includes a hole for bone grafts.

15. The self-drilling bone fusion screw apparatus according to claim 1, wherein each of the first sliding triangular portion and the second sliding triangular portion includes a hole for bone grafts.

16. The self-drilling bone fusion screw apparatus according to claim 1, wherein one of the first sliding triangular portion and the second sliding triangular portion includes a plurality of holes for bone grafts.

17. The self-drilling bone fusion screw apparatus according to claim 1, wherein the first predetermined angle extends in a different direction from the second predetermined angle.

18. The self-drilling bone fusion screw apparatus according to claim 1, wherein the adjuster includes a screw that engages each of the first sliding triangular portion and the second sliding triangular portion.