METHOD OF LENGTH PRESERVATION DURING BONE REPAIR

• US 20130123935A1
• Filed: 11/05/2012
• Published: 05/16/2013
• Est. Priority Date: 11/03/2011
• Status: Abandoned Application

• Current Assignee: 4WEB LLC
• Original Assignee: 4WEB LLC
• Inventors: Hunt, Jessee, Crates, John M.
• Application Number:
  US13/668,968
• Publication Number:
  US 20130123935A1
• Time in Patent Office: Days
• US Class Current: 623/23.61
• 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 2/30907 Nets or sleeves applied to surface of prostheses or in cement
• CPC Class Codes: A61F 2/44 for the spine, e.g. vertebrae, spinal discs
• 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 2002/2835 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 2002/30914 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 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 80/00 : Products made by additive manufacturing

Abstract

An implant, including a web structure having a space truss with two or more planar truss units having a plurality of struts joined at nodes is used to join two separated bone portions. The web structure is configured to be disposed in the space between the separated bone portions to enhance fusion. In some embodiments, the implant comprises a non-planar surface.

Claims

1. An implant comprising a web structure, wherein the web structure comprises:

a plurality of planar truss units coupled to each other, the planar truss units comprising a plurality of struts coupled to a plurality of nodes;

wherein one or more angles defined by two struts and a node of one or more planar truss units are different than one or more corresponding angles defined by two struts and a node of one or more other planar truss units, wherein connecting exterior surface struts couple the nodes of the non-equivalent angle planar truss units to each other, defining a non-planar surface.

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

3. The implant of claim 1, wherein the plurality of planar truss units are coupled to one another such that one or more planar truss units lie in a plane that is not substantially parallel to a plane of a planar truss unit that shares at least one strut with the one or more planar truss units.

4. The implant of claim 1, wherein a plurality of planar truss units define an exterior surface of the web structure.

5. The implant of claim 1, wherein the at least some of the connecting struts define triangular trusses having at least one node shared by two different triangular planar truss units having different corresponding angles.

6. The implant of claim 1, wherein the plurality of planar truss units comprises a first planar triangular truss unit coupled to a second planar triangular truss unit, wherein the first and second planar triangular truss units are coupled in an opposing manner with a single node defining the apex of each planar triangular truss unit.

7. The implant of claim 1, wherein the non-planar surface is a substantially rounded surface.

8. The implant of claim 1, wherein opposing surfaces of the implant are rounded.

9. The implant of claim 1, wherein one or more of the connecting exterior surface struts are curved to form a rounded exterior surface of the implant.

10. The implant of claim 1, wherein at least a portion of the one or more of the planar truss units extend beyond the non-planar surface.

11. An implant comprising a web structure, wherein the web structure comprises:

a plurality of polar struts extending from one surface of the implant to the opposing surface of the implant; and

a plurality of connecting struts, coupled to the ends of the polar struts, together defining a plurality of planar truss units,

wherein at least two of the polar struts have different lengths such that the web structure has at least one non-planar surface defined by the ends of the polar struts.

12. The implant of claim 11, wherein the plurality of planar truss units comprise one or more planar triangular truss units having three substantially straight struts and three nodes in a triangular configuration.

13. The implant of claim 11, wherein the plurality of planar truss units are coupled to one another such that one or more planar truss units lie in a plane that is not substantially parallel to a plane of a planar truss unit that shares at least one strut with the one or more planar truss units.

14. The implant of claim 11, wherein a plurality of planar truss units define an exterior surface of the web structure.

15. The implant of claim 14, wherein the exterior surface of the web structure defined by the plurality of planar truss units is substantially parallel to the longitudinal axis of the polar struts.

16. The implant of claim 11, wherein the at least some of the connecting struts define triangular trusses having at least one node at the end of a polar strut.

17. The implant of claim 11, wherein the plurality of planar truss units comprises a first planar triangular truss unit coupled to a second planar triangular truss unit, wherein the first and second planar triangular truss units are coupled in an opposing manner with a single node defining the apex of each planar triangular truss unit.

18. The implant of claim 11, wherein the non-planar surface is a substantially rounded surface.

19. The implant of claim 11, wherein opposing surfaces of the implant are rounded.

20. The implant of claim 11, wherein at least a portion of the one or more of the planar truss units extend beyond the non-planar surface.

21. The implant of claim 11, wherein at least a portion of the struts coupled to a node at the end of a polar strut are curved to form a rounded exterior surface of the implant.

22-31. -31. (canceled)

32. A method of length preservation in a separated bone comprising:

forming a contact surface on a first side of the separated bone;

forming a contact surface on a second side of the separated bone;

placing an implant in contact with the first and second contact surfaces of the separated bone;

wherein the implant comprises;

a web structure comprising a space truss comprising two or more planar truss units having a plurality of struts joined at nodes.

33-39. -39. (canceled)