Interbody device and plate for spinal stabilization and instruments for positioning same

Patent metadata

Field	Value
Publication number	US-2016256294-A1
Application number	US-201615155514-A
Country	US
Kind code	A1
Filing date	May 16, 2016
Priority date	Mar 3, 2011
Publication date	Sep 8, 2016
Grant date	—

Abstract

Systems, methods and devices for providing stabilization between first and second vertebrae are provided. More particularly, in one form a system includes an implant configured to be positioned in a disc space between the first and second vertebrae and a freestanding plate for engagement with extradiscal surfaces of the first and second vertebrae. The system also includes an insertion instrument with an engaging portion configured to releasably engage with the implant and the plate such that the implant and plate can be positioned together relative to the first and second vertebrae. In one aspect, an angular orientation of the implant relative to the plate is adjustable when the implant and the plate are engaged by the instrument. In this or another aspect, the implant and plate are held in a contiguous relationship when engaged by the instrument. However, different forms and applications are also envisioned,

First claim

1 - 23 . (canceled)

24 . A method for providing spinal stabilization, comprising:
engaging an implant and a plate with an insertion instrument to retain the implant and the plate in a contiguous, uncoupled arrangement; inserting a leading end of the implant in a spinal disc space between first and second vertebrae with the insertion instrument; and advancing the implant into the disc space with the insertion instrument until a bottom surface of the plate contacts extradiscal surfaces of the vertebrae.

25 . A method as recited in claim 24 , wherein the inserting and the advancing are part of a single surgical step.

26 . A method as recited in claim 24 , wherein the disc space is accessed from an anterior approach.

27 . A method as recited in claim 24 , wherein engaging the implant and the plate with the insertion instrument comprises inserting a tine of the insertion instrument into a groove of the plate and a groove of the implant.

28 . A method as recited in claim 24 , wherein engaging the implant and the plate with the insertion instrument comprises inserting tines of the insertion instrument into grooves of the plate and grooves of the implant.

29 . A method as recited in claim 24 , further comprising rotating the implant relative to the plate when the insertion instrument is engaged with the implant and the plate.

30 . A method as recited in claim 24 , further comprising rotating the implant relative to the plate when the implant and the plate are retained in the contiguous, uncoupled arrangement by the insertion instrument.

31 . A method as recited in claim 30 , wherein engaging the implant and the plate with the insertion instrument comprises inserting racetrack shape projections of the insertion instrument into racetrack shape grooves of the plate to prevent rotation of the plate relative to the insertion instrument.

32 . A method as recited in claim 24 , wherein:
engaging the implant and the plate with the insertion instrument comprises inserting circular projections of the insertion instrument into circular receptacles of the implant; and the method further comprises rotating the implant relative to the plate when the implant and the plate are retained in the contiguous, uncoupled arrangement.

33 . A method as recited in claim 32 , wherein engaging the implant and the plate with the insertion instrument comprises inserting racetrack shape projections of the insertion instrument into racetrack shape grooves of the plate to prevent rotation of the plate relative to the insertion instrument.

34 . A method as recited in claim 32 , wherein the implant comprises a convex trailing end that faces a concave surface of the plate to facilitate rotation of the implant relative to the plate.

35 . A method as recited in claim 24 , wherein engaging the implant and the plate with the insertion instrument comprises inserting racetrack shape projections of the insertion instrument into racetrack shape grooves of the plate to prevent rotation of the plate relative to the insertion instrument.

36 . A method as recited in claim 24 , wherein engaging the implant and the plate with the insertion instrument comprises inserting racetrack shape projections of the insertion instrument into racetrack shape grooves of the plate to prevent rotation of the plate relative to the insertion instrument and inserting circular projections of the insertion instrument into circular receptacles of the implant to allow rotation of the implant relative to the plate.

37 . A method as recited in claim 24 , wherein no portion of the plate is positioned within the disc space when the bottom surface of the plate contacts the extradiscal surfaces of the vertebrae.

38 . A method for providing spinal stabilization, comprising:
engaging an implant and a plate with an insertion instrument to retain the implant and the plate in a contiguous, uncoupled arrangement; rotating the implant relative to the plate; inserting a leading end of the implant in a spinal disc space between first and second vertebrae with the insertion instrument; advancing the implant into the disc space with the insertion instrument until a bottom surface of the plate contacts extradiscal surfaces of the vertebrae; and inserting bone screws through the plate and into the vertebrae.

39 . A method as recited in claim 38 , wherein engaging the implant and the plate with the insertion instrument comprises inserting racetrack shape projections of the insertion instrument into racetrack shape grooves of the plate to prevent rotation of the plate relative to the insertion instrument.

40 . A method as recited in claim 39 , wherein engaging the implant and the plate with the insertion instrument comprises inserting circular projections of the insertion instrument into circular receptacles of the implant to allow rotation of the implant relative to the plate.

41 . A method as recited in claim 38 , wherein engaging the implant and the plate with the insertion instrument comprises inserting tines of the insertion instrument into grooves of the plate and grooves of the implant.

42 . A method as recited in claim 38 , wherein no portion of the plate is positioned within the disc space when the bottom surface of the plate contacts the extradiscal surfaces of the vertebrae.

43 . A method for providing spinal stabilization, comprising:
engaging an implant and a plate with an insertion instrument to retain the implant and the plate in a contiguous, uncoupled arrangement; rotating the implant relative to the plate; inserting a leading end of the implant in a spinal disc space between first and second vertebrae with the insertion instrument; advancing the implant into the disc space with the insertion instrument until a bottom surface of the plate contacts extradiscal surfaces of the vertebrae and no portion of the plate is positioned within the disc space; inserting bone screws through holes in the plate and into the vertebrae; and rotating a retaining element of the plate comprising a plurality of arms separated by gaps from a first position in which the gaps are aligned with the holes to a second position in which the arms overlap the holes to prevent the bone screws from backing out of the holes.

Assignees

• Warsaw Orthopedic Inc

Inventors

• Armstrong William
• Carls Thomas
• Cowan Jr John A
• Duncan James
• Hynes Richard A
• Melkent Anthony J
• Mobasser Jean-Pierre
• Silcox Iii D Hal

Classifications

• A61F2002/30624

  Hinged joint, e.g. with transverse axle restricting the movement · CPC title

• A61F2002/30593

  hollow · CPC title

• A61F2002/3054

  about a connection axis or implantation axis for selecting any one of a plurality of radial orientations between two modular parts, e.g. Morse taper connections, at discrete positions, angular positions or continuous positions · CPC title

• A61F2002/30383

  made by laterally inserting a protrusion, e.g. a rib into a complementarily-shaped groove · CPC title

• A61F2310/00293

  containing a phosphorus-containing compound, e.g. apatite · CPC title