Anatomical wedge implant

• US 10,383,737 B2
• Filed: 07/11/2017
• Issued: 08/20/2019
• Est. Priority Date: 10/19/2012
• Status: Active Grant

• Current Assignee: Tyber Medical, LLC
• Original Assignee: Tyber Medical, LLC
• Inventors: Tyber, Jeffrey, Faresich, Christopher
• Primary Examiner(s): Ku, Si Ming
• Application Number:
  US15/646,497
• Publication Number:
  US 20180008419A1
• Time in Patent Office: 770 Days
• CPC Class Codes: A61B 17/7059 Cortical plates A61B17/7007, A61B17/7058 take precedence
• CPC Class Codes: A61B 17/8095 Wedge osteotomy devices
• CPC Class Codes: A61B 17/8852 capable of being assembled or enlarged, or changing shape, inside the bone or disc
• CPC Class Codes: A61B 2017/565 for surgical correction of axial deviation, e.g. hallux valgus or genu valgus
• CPC Class Codes: A61B 90/94 coded with symbols, e.g. text
• CPC Class Codes: A61F 2/28 Bones joints A61F2/30
• CPC Class Codes: A61F 2/30771 applied in original prostheses, e.g. holes or grooves
• CPC Class Codes: A61F 2/4225 for feet, e.g. toes
• 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 2/4465 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 2/4603 for insertion or extraction of endoprosthetic joints or of accessories thereof
• CPC Class Codes: A61F 2/4606 of wrists or ankles; of hands, e.g. fingers; of feet, e.g. toes
• 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 2002/30011 differing in porosity
• CPC Class Codes: A61F 2002/30028 differing in tissue ingrowth capacity, e.g. made from both ingrowth-promoting and ingrowth-preventing parts
• CPC Class Codes: A61F 2002/3008 radio-opaque, e.g. radio-opaque markers
• CPC Class Codes: A61F 2002/3009 : Transparent or translucent
• CPC Class Codes: A61F 2002/30266 : wedge-shaped parallelepipeds
• CPC Class Codes: A61F 2002/30281 : wedge-shaped
• CPC Class Codes: A61F 2002/30321 : differing in roughness
• CPC Class Codes: A61F 2002/30326 : differing in height or in length
• CPC Class Codes: A61F 2002/30355 : Cylinder of elliptical or oval basis
• 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 2002/30523 : by means of meshing gear teeth
• CPC Class Codes: A61F 2002/30556 : for adjusting thickness
• 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 2002/30593 : hollow
• CPC Class Codes: A61F 2002/30622 : Implant for fusing a joint or bone material
• CPC Class Codes: A61F 2002/3071 : Identification means; Administration of patients
• CPC Class Codes: A61F 2002/30774 : internally-threaded
• CPC Class Codes: A61F 2002/3079 : Stepped or enlarged apertures, e.g. having discrete diameter changes
• CPC Class Codes: A61F 2002/30808 : parallel
• CPC Class Codes: A61F 2002/3082 : Grooves
• CPC Class Codes: A61F 2002/30831 : perpendicular with respect to each other
• CPC Class Codes: A61F 2002/30836 : knurled
• CPC Class Codes: A61F 2002/30843 : Pyramidally-shaped
• CPC Class Codes: A61F 2002/30904 : serrated profile, i.e. saw-toothed
• CPC Class Codes: A61F 2002/3092 : having an open-celled or open-pored structure
• CPC Class Codes: A61F 2002/3093 : for promoting ingrowth of bone tissue
• CPC Class Codes: A61F 2002/30985 : using three dimensional printing [3DP]
• CPC Class Codes: A61F 2002/4228 : for interphalangeal joints, i.e. IP joints
• 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 2310/00407 : Coating made of titanium or of Ti-based alloys
• CPC Class Codes: A61F 2310/00461 : Coating made of nickel or Ni-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: A61L 2430/02 : for reconstruction of bones; weight-bearing implants
• CPC Class Codes: A61L 31/088 : Other specific inorganic materials not covered by A61L31/084 or A61L31/086
• CPC Class Codes: A61L 31/14 : Materials characterised by their function or physical properties , e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
• CPC Class Codes: A61L 31/18 : Materials at least partially X-ray or laser opaque

Abstract

An osteotomy implant includes a first surface extending generally in a first plane and a second surface extending generally in a second plane, oblique to the first plane. The first surface has a perimeter having a first linear edge, a first curve edge connected to the first linear edge, a second linear edge connected to the first curved edge, and a second curved edge connected to the second liner edge.

Claims

1. An osteotomy implant system comprising:

a wedge shaped core having a central plane extending therethrough;

a first bone engaging surface extending at an acute angle relative to the central plane on a first side of the core; and

a second bone engaging surface disposed on an opposing side of the central plane from the first bone engaging surface on a second side of the core, the second bone engaging surface extending at the acute angle relative to the central plane,

wherein the first and second bone engaging surfaces comprise an osteoconductive structure, and

wherein the first surface has a perimeter having a plurality of linear edges and wherein the perimeter is shaped such that the core is asymmetrical relative to all axes bisecting and extending perpendicular to each of the plurality of linear edges.

2. The osteotomy implant system according to claim 1, wherein the osteoconductive structure is undetectable by imaging.

3. The osteotomy implant system according to claim 1, further comprising a fixation plate having a first opening and a second opening space from the first opening farther than a distance between the first generally planar bone engaging surface and a second generally planar bone engaging surface.

4. The osteotomy implant system according to claim 3, wherein the core comprises a peripheral portion having a threaded aperture formed therein.

5. The osteotomy implant system according to claim 4, wherein the fixation plate further has a third opening located between the first opening and the second opening such that, when the fixation plate is secured over the core, the third opening is aligned with the threaded aperture.

6. The osteotomy implant system according to claim 1, wherein the at least one of the surfaces has an osteoconductive structure with a thickness of less than 800 microns.

7. The osteotomy implant system according to claim 6, wherein the thickness is between 5 nanometers and 800 microns.

8. The osteotomy implant system according to claim 1, wherein the first generally planar bone engaging surface and the second generally planar bone engaging surface are transparent to imaging.

9. The osteotomy implant system according to claim 1, wherein the first generally planar bone engaging surface and the second generally planar bone engaging surface are visible to imaging.

10. The osteotomy implant system according to claim 1, wherein the osteoconductive structure comprises a titanium plasma spray.

11. The osteotomy implant system according to claim 1, wherein the core is sized and shaped such that at least 50% of the perimeter of the core is contained within an osteotomy site.

12. An osteotomy implant system comprising:

a wedge shaped core;

a first bone engaging surface disposed on a first side of the core; and

a second bone engaging surface disposed on a second side of the core,

wherein the first and second bone engaging surfaces comprise an osteoconductive structure, and

wherein the first surface has a perimeter having a first linear edge, a first curved edge directly attached to the first linear edge and having a first radius of curvature, a second linear edge directly attached to the first curved edge, a second curved edge directly attached to the second linear edge, a third linear edge directly attached to the second curved edge, a third curved edge directly attached to the third linear edge and having a second radius of curvature, a fourth curved edge directly attached to the third curved edge, a fifth curved edge directly attached to the fourth curved edge and having a third radius of curvature, and a sixth curved edge directly attached to the fifth curved edge and having a fourth radius of curvature, wherein each of the first, second, third, and fourth radii of curvature are all different from the others of the first, second, third, and fourth remaining radii of curvature, and

wherein the perimeter is shaped such that the core is asymmetrical relative to all axes bisecting and extending perpendicular to each of the plurality of linear edges.