Implant system and method

• US 9,421,108 B2
• Filed: 12/03/2010
• Issued: 08/23/2016
• Est. Priority Date: 12/18/2008
• Status: Active Grant

• Current Assignee: 4WEB LLC
• Original Assignee: 4Web, Inc.
• Inventors: Hunt, Jessee
• Primary Examiner(s): Hoffman, Mary
• Assistant Examiner(s): CARTER, TARA ROSE E
• Application Number:
  US12/960,092
• Publication Number:
  US 20110196495A1
• Time in Patent Office: 2,090 Days
• Field of Search: 623/17.11, 623 1712- 1716, 606246-249
• US Class Current: 1/1
• CPC Class Codes: A61B 17/025 Joint distractors
• CPC Class Codes: A61B 17/1604 Chisels; Rongeurs; Punches; Stamps
• CPC Class Codes: A61B 17/56 Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
• CPC Class Codes: A61B 17/58 for osteosynthesis, e.g. bone plates, screws , setting implements or the like A61B17/14, A61B17/16 take precedence
• CPC Class Codes: A61B 17/68 Internal fixation devices , including fasteners and spinal fixators, even if a part thereof projects from the skin bone staples A61B17/0642
• CPC Class Codes: A61F 2/28 Bones joints A61F2/30
• CPC Class Codes: A61F 2/2803 for mandibular reconstruction temporo-mandibular joints A61F2/3099; bone plates for the jaw A61B17/8071
• CPC Class Codes: A61F 2/2846 Support means for bone substitute or for bone graft implants, e.g. membranes or plates for covering bone defects nets or sleeves applied to surface of endoprostheses A61F2/30907; bone plates A61B17/80; bone regeneration in dental surgery A61C8/0006
• CPC Class Codes: A61F 2/30767 Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
• CPC Class Codes: A61F 2/30771 applied in original prostheses, e.g. holes or grooves
• CPC Class Codes: A61F 2/30907 Nets or sleeves applied to surface of prostheses or in cement
• CPC Class Codes: A61F 2/3094 Designing or manufacturing processes
• CPC Class Codes: A61F 2/32 for the hip
• CPC Class Codes: A61F 2/36 Femoral heads ; Femoral endoprostheses
• CPC Class Codes: A61F 2/38 for elbows or knees
• CPC Class Codes: A61F 2/40 for shoulders
• CPC Class Codes: A61F 2/4202 for ankles
• CPC Class Codes: A61F 2/4225 for feet, e.g. toes
• 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 2/447 substantially parallelepipedal, e.g. having a rectangular or trapezoidal cross-section
• CPC Class Codes: A61F 2/4611 : of spinal prostheses
• CPC Class Codes: A61F 2002/2817 : Bone stimulation by chemical reactions or by osteogenic or biological products for enhancing ossification, e.g. by bone morphogenetic or morphogenic proteins [BMP] or by transforming growth factors [TGF]
• 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 2002/30153 : rectangular
• CPC Class Codes: A61F 2002/30156 : triangular
• CPC Class Codes: A61F 2002/30158 : trapezoidal
• CPC Class Codes: A61F 2002/30179 : X-shaped
• CPC Class Codes: A61F 2002/30273 : pyramidal
• CPC Class Codes: A61F 2002/30275 : tetrahedral, i.e. having a triangular basis
• CPC Class Codes: A61F 2002/3028 : polyhedral different from parallelepipedal and pyramidal
• CPC Class Codes: A61F 2002/30281 : wedge-shaped
• CPC Class Codes: A61F 2002/30593 : hollow
• CPC Class Codes: A61F 2002/30599 : stackable
• CPC Class Codes: A61F 2002/30841 : Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes
• CPC Class Codes: A61F 2002/30899 : Protrusions pierced with apertures
• CPC Class Codes: A61F 2002/30909 : Nets
• CPC Class Codes: A61F 2002/30914 : Details of the mesh structure, e.g. disposition of the woven warp and weft wires
• CPC Class Codes: A61F 2002/3092 : having an open-celled or open-pored structure
• CPC Class Codes: A61F 2002/30943 : using mathematical models
• CPC Class Codes: A61F 2002/30952 : using CAD-CAM techniques or NC-techniques
• CPC Class Codes: A61F 2002/30953 : using a remote computer network, e.g. Internet
• CPC Class Codes: A61F 2002/30957 : using a positive or a negative model, e.g. moulds
• CPC Class Codes: A61F 2002/30962 : using stereolithography
• CPC Class Codes: A61F 2002/30968 : Sintering
• CPC Class Codes: A61F 2002/3097 : using laser
• CPC Class Codes: A61F 2002/4628 : with linear motion along or rotating motion about an axis transverse to the instrument axis or to the implantation direction, e.g. clamping
• CPC Class Codes: A61F 2210/0076 : multilayered, e.g. laminated structures
• CPC Class Codes: A61F 2230/0063 : Three-dimensional shapes
• CPC Class Codes: A61F 2310/00011 : Metals or alloys
• 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 2310/00047 : Aluminium or Al-based alloys
• CPC Class Codes: A61F 2310/00179 : Ceramics or ceramic-like structures
• CPC Class Codes: A61F 2310/00598 : Coating or prosthesis-covering structure made of compounds based on metal oxides or hydroxides
• 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 2310/00958 : Coating or prosthesis-covering structure made of bone or of bony tissue
• CPC Class Codes: A61F 2310/0097 : Coating or prosthesis-covering structure made of pharmaceutical products, e.g. antibiotics
• 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
• CPC Class Codes: B33Y 70/00 : Materials specially adapted for additive manufacturing
• CPC Class Codes: B33Y 80/00 : Products made by additive manufacturing

Abstract

In various embodiments, an implant for interfacing with a bone structure includes a web structure including a space truss. The space truss includes two or more planar truss units having a plurality of struts joined at nodes and the web structure is configured to interface with human bone tissue. In some embodiments, a method is provided that includes accessing an intersomatic space and inserting an implant into the intersomatic space. The implant includes a web structure including a space truss. The space truss includes two or more planar truss units having a plurality of struts joined at nodes and the web structure is configured to interface with human bone tissue.

Claims

1. An implant for interfacing with a bone structure, comprising:

an external frame defining an exterior surface of the implant, wherein the external frame is defined by a plurality of planar truss units arranged in a series with an angle relative to one another forming an enclosure having substantially vertical walls defined by the planar truss units with the planar truss units arranged in a vertical direction from a bottom surface of the implant toward a top surface of the implant; and

an internal web structure at least partially enclosed by the external frame configured to interface with bone tissue, the internal web structure comprising;

a space truss comprising two or more planar truss units having a plurality of struts joined at nodes, wherein the space truss comprises planar truss units forming one or more polyhedron truss units, and wherein planar truss units of at least one of the one or more polyhedron truss units define the external frame, and

wherein at least one polyhedron truss unit of the web structure passes into a central portion of the implant.

2. The implant of claim 1, wherein the implant comprises a spinal inter body fusion implant.

3. The implant of claim 1, wherein the implant comprises an osteotomy implant.

4. The implant of claim 1, wherein the external frame comprises one or more planar trusses comprising two or more adjacent planar truss units that lie in substantially the same plane.

5. The implant of claim 4, wherein the external truss structure comprises at least one of a top, a bottom, or a side portion of the web structure.

6. The implant of claim 4, wherein the external frame comprises an external truss structure comprising one or more planar trusses that each comprise two or more planar truss units disposed proximate an exterior of the space truss.

7. The implant of claim 6, wherein the external truss structure comprises two or more planar trusses adjacent one another, wherein each of the two or more adjacent planar trusses comprise two or more adjacent planar truss units that lie in substantially the same plane.

8. The implant of claim 4, wherein at least one of the one or more planar trusses comprises a plurality of triangular truss units having a common vertex.

9. The implant of claim 1, wherein one or more planar truss units comprise a planar triangular truss unit having three substantially straight struts and three nodes in a triangular configuration.

10. The implant of claim 1, wherein the space truss comprises a plurality of planar truss units coupled to one another, wherein each of the planar truss units lies in a plane that is not substantially parallel to a plane of an adjacent planar truss unit that shares at least one strut.

11. The implant of claim 1, wherein the space truss comprises a plurality of planar truss units forming a plurality of tetrahedrons.

12. The implant of claim 11, wherein at least two of the plurality of tetrahedrons are coupled together via one or more struts connecting two respective vertices on each of the two tetrahedrons.

13. The implant of claim 11, wherein at least two of the tetrahedrons share a common planar truss unit to form a hexahedron.

14. The implant of claim 1, wherein the space truss comprises at least five planar truss units forming a pyramid.

15. The implant of claim 14, wherein the space truss comprises a plurality of pyramids, and wherein at least two of the pyramids are arranged opposing one another such that they share a square shaped common planar truss unit at their base to form an octahedron.

16. The implant of claim 15, comprising at least one strut connecting two or more opposing vertices of the square shaped common planar truss unit.

17. The implant of claim 15, comprising a strut connecting two opposed vertices of the octahedron.

18. The implant of claim 1, wherein the implant is configured for use as a spinal implant, a corpectomy device, in a hip replacement, in a knee replacement, in a long bone reconstruction scaffold, foot and ankle implant, shoulder implant, a joint replacement or in a cranio-maxifacial implant.

19. The implant of claim 1, wherein at least one of the struts of the internal web structure comprises a biologic, growth factor or antimicrobial coupled thereto.

20. The implant of claim 1, wherein one or more of the struts are curved/arched along at least a portion of their length.

21. A method, comprising:

accessing a space proximate a bone structure comprising bone tissue; and

inserting an implant into the space, wherein the implant comprises;

an external frame defining an exterior surface of the implant, wherein the external frame is defined by a plurality of planar truss units arranged in a series with an angle relative to one another forming an enclosure having substantially vertical walls defined by the planar truss units with the planar truss units arranged in a vertical direction from a bottom surface of the implant toward a top surface of the implant; and

an internal web structure at least partially enclosed by the external frame configured to interface with the bone tissue, the internal web structure comprising;

a space truss comprising two or more planar truss units having a plurality of struts joined at nodes, wherein the space truss comprises planar truss units forming a plurality of polyhedron truss units, and wherein planar truss units of at least a portion of the plurality of polyhedron truss units define the external frame, and

wherein at least one polyhedron truss unit of the web structure passes into a central portion of the implant.

22. The method of claim 21, wherein the space comprises an intervertebral space and, wherein the implant comprises a spinal fusion implant.

23. The method of claim 21, wherein the space comprises a void proximate an ankle or knee, and wherein the implant comprises an osteotomy implant.

24. An implant for interfacing with a bone structure, comprising:

an external frame defining an exterior surface of the implant; and

an internal web structure at least partially enclosed by the external frame configured to interface with bone tissue, the internal web structure comprising;

a space truss comprising a plurality of polyhedron truss units, wherein the center portion of the polyhedron truss units have a void region in their center that does not include any additional members extending there through, and

wherein at least one polyhedron truss unit of the web structure passes into a central portion of the implant.