Osseointegrable device

• US 10,456,178 B2
• Filed: 04/16/2015
• Issued: 10/29/2019
• Est. Priority Date: 04/16/2014
• Status: Active Grant

• Current Assignee: Osseointegration Holdings Pty Limited
• Original Assignee: Osseointegration Holdings Pty Limited
• Inventors: Al Muderis, Munjed
• Primary Examiner(s): Harvey, Julianna N
• Application Number:
  US15/110,608
• Publication Number:
  US 20160331422A1
• Time in Patent Office: 1,657 Days
• CPC Class Codes: A61B 17/7233 with special means of locking the nail to the bone
• CPC Class Codes: A61B 17/7283 with special cross-section of the nail
• CPC Class Codes: A61F 2/2814 Bone stump caps
• CPC Class Codes: A61F 2/30767 Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
• CPC Class Codes: A61F 2/36 Femoral heads ; Femoral endoprostheses
• CPC Class Codes: A61F 2/389 Tibial components A61F2/3868 takes precedence
• CPC Class Codes: A61F 2/4014 Humeral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic humeral shafts
• CPC Class Codes: A61F 2/78 Means for protecting prostheses or for attaching them to the body, e.g. bandages, harnesses, straps, or stockings for the limb stump
• CPC Class Codes: A61F 2002/2825 Femur
• CPC Class Codes: A61F 2002/2892 Tibia
• CPC Class Codes: A61F 2002/30011 differing in porosity
• CPC Class Codes: A61F 2002/30024 differing in coefficient of friction
• CPC Class Codes: A61F 2002/3021 frustoconical
• CPC Class Codes: A61F 2002/30215 Stepped cones, i.e. having discrete diameter changes
• CPC Class Codes: A61F 2002/30233 Stepped cylinders, i.e. having discrete diameter changes
• CPC Class Codes: A61F 2002/30329 Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
• CPC Class Codes: A61F 2002/30331 made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
• CPC Class Codes: A61F 2002/30332 Conically- or frustoconically-shaped protrusion and recess
• CPC Class Codes: A61F 2002/30405 made by screwing complementary threads machined on the parts themselves
• CPC Class Codes: A61F 2002/30433 using additional screws, bolts, dowels, rivets or washers e.g. connecting screws
• CPC Class Codes: A61F 2002/30507 : using a threaded locking member, e.g. a locking screw or a set screw
• CPC Class Codes: A61F 2002/30578 : having apertures, e.g. for receiving fixation screws
• CPC Class Codes: A61F 2002/3084 : Nanostructures
• CPC Class Codes: A61F 2002/30884 : Fins or wings, e.g. longitudinal wings for preventing rotation within the bone cavity
• CPC Class Codes: A61F 2002/3092 : having an open-celled or open-pored structure
• CPC Class Codes: A61F 2002/369 : Stepped shaft, i.e. having discrete diameter changes
• CPC Class Codes: A61F 2002/5083 : modular
• CPC Class Codes: A61F 2002/7868 : Means for putting-on or pulling-off prostheses
• CPC Class Codes: A61F 2002/7887 : for connecting limb exoprostheses to the stump bone
• CPC Class Codes: A61F 2220/0025 : Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
• CPC Class Codes: A61F 2220/0033 : made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
• CPC Class Codes: A61F 2220/0041 : using additional screws, bolts, dowels or rivets, e.g. connecting screws
• CPC Class Codes: A61F 2230/0067 : conical
• CPC Class Codes: A61F 2250/0021 : differing in coefficient of friction
• CPC Class Codes: A61F 2250/0023 : differing in porosity
• CPC Class Codes: A61F 2310/00407 : Coating made of titanium or of Ti-based alloys
• CPC Class Codes: A61F 2310/00491 : Coating made of niobium or Nb-based alloys
• CPC Class Codes: A61L 2300/404 : Biocides, antimicrobial agents, antiseptic agents
• CPC Class Codes: A61L 2400/12 : Nanosized materials, e.g. nanofibres, nanoparticles, nanowires, nanotubes; Nanostructured surfaces
• CPC Class Codes: A61L 2430/02 : for reconstruction of bones; weight-bearing implants
• CPC Class Codes: A61L 2430/24 : for joint reconstruction
• CPC Class Codes: A61L 27/06 : Titanium or titanium alloys
• CPC Class Codes: A61L 27/30 : Inorganic materials
• CPC Class Codes: A61L 27/306 : Other specific inorganic materials not covered by A61L27/303 - A61L27/32
• CPC Class Codes: A61L 27/56 : Porous materials, e.g. foams or sponges
• CPC Class Codes: B81C 2201/0181 : Physical Vapour Deposition [PVD], i.e. evaporation, sputtering, ion plating or plasma assisted deposition, ion cluster beam technology

Abstract

An implant arranged for integration into a skeletal bone of a patient, comprising: a body having at least one end, the body being arranged to substantially mimic a portion of a skeletal bone; wherein the at least one end includes an enlarged portion arranged to, in use, prevent migration of the implant into the flesh of a patient.

Claims

1. An osseointegration implant arranged, in use, for integration into a skeletal bone of a patient where part of the skeletal bone is missing, comprising:

a body and at least one end, the body being arranged, in use to sit within a passageway formed within the bone and substantially mimic a portion of a skeletal bone;

wherein the at least one end includes an enlarged portion arranged to, in use, prevent migration of the implant into the skeletal bone of a patient; and

wherein the enlarged portion is arranged, in use, to sit within a recess formed in an end of the skeletal bone;

wherein the recess is connected to the passageway and is of a larger diameter of the passageway;

wherein the at least one end including the enlarged portion is arranged so that, in use, the end is flush with the end of the skeletal bone; and

wherein the at least one end is configured as an attachment point for a prosthetic limb.

2. An osseointegration implant in accordance with claim 1, wherein a width of the enlarged portion is narrower than a width of the skeletal bone so that the enlarged portion sits entirely within the recess formed in an end of the skeletal bone when in use.

3. An osseointegration implant in accordance with claim 1, wherein the enlarged portion is tapered away from the body.

4. An osseointegration implant in accordance with claim 1, wherein the enlarge portion is flared away from the body.

5. An osseointegration implant in accordance with claim 1, wherein the body includes a coating arranged, in use, to assist osseointegration of the implant into the existing skeletal bone.

6. An osseointegration implant in accordance with claim 5, wherein the coating includes a porous structure arranged, in use, to assist osseointegration of the implant into the existing skeletal bone.

7. An osseointegration implant in accordance with claim 6, wherein the porous structure is formed from titanium.

8. An osseointegration implant in accordance with claim 7, wherein the porous structure is formed by a plasma deposition process.

9. An osseointegration implant in accordance with claim 1, wherein the implant is sized to be integrated into a human femoral bone.

10. An osseointegration implant in accordance with claim 1, wherein the body of the implant has a curved shape, arranged, in use, to mimic the curve of a human femoral bone.

11. An osseointegration implant in accordance with claim 1, wherein the implant is sized to be integrated into a portion of a human tibial bone.

12. An osseointegration implant in accordance with claim 1, wherein the body of the implant has a curved shape, arranged to mimic the curve of a human tibial bone.

13. An osseointegration implant in accordance with claim 1, wherein the body of the implant further includes at least one projection which extends along a portion of the body, wherein the projection is arranged, in use, to, in use, prevent rotation of the implant relative to the skeletal bone.

14. An osseointegration implant in accordance with claim 13, wherein the projection is at least one spline.

15. An osseointegration implant in accordance with claim 14, wherein the at least one spline extends longitudinally along the body of the implant.

16. An osseointegration implant in accordance with claim 13, including a plurality of splines, wherein a recessed channel is located between adjacent splines.

17. An osseointegration implant in accordance with claim 1, further including a second end, wherein the second end is tapered.

18. An osseointegration implant in accordance with claim 1, wherein a portion of the at least one end is coated with a physiologically inert substance.

19. An osseointegration implant in accordance with claim 1, wherein the body includes an aperture distal to the enlarged portion arranged to receive a locking means arranged to fix the body to the skeletal bone.

20. An osseointegration implant arranged, in use, for integration into a skeletal bone of a patient, comprising:

a body and at least one end, the body being arranged, in use to sit within a passageway formed within the bone and substantially mimic a portion of a skeletal bone;

wherein the at least one end includes an enlarged portion arranged to, in use, prevent migration of the implant into the skeletal bone of a patient; and

wherein the enlarged portion is arranged, in use, to sit within a recess formed in an end of the skeletal bone;

wherein the recess is connected to the passageway and is of a larger diameter than the passageway; and

wherein the at least one end is configured as an attachment point for a prosthetic limb.