Assembled Prosthesis Such as a Disc

• US 20080133017A1
• Filed: 11/15/2005
• Published: 06/05/2008
• Est. Priority Date: 11/15/2004
• Status: Abandoned Application

• Current Assignee: Kyphon SARL (Medtronic Plc)
• Original Assignee: Disc-O-Tech Medical Technologies Limited (Medtronic Plc)
• Inventors: Beyar, Mordechay, Globerman, Oren
• Application Number:
  US11/667,759
• Publication Number:
  US 20080133017A1
• Time in Patent Office: Days
• US Class Current: 623/17.16
• CPC Class Codes: A61F 2/4425 made of articulated components
• CPC Class Codes: A61F 2/4611 of spinal prostheses
• CPC Class Codes: A61F 2002/30062 (bio)absorbable, biodegradable, bioerodable, (bio)resorbable, resorptive
• CPC Class Codes: A61F 2002/30092 using shape memory or superelastic materials, e.g. nitinol
• CPC Class Codes: A61F 2002/30224 cylindrical
• CPC Class Codes: A61F 2002/30387 Dovetail connection
• CPC Class Codes: A61F 2002/30448 using adhesives
• CPC Class Codes: A61F 2002/30462 retained or tied with a rope, string, thread, wire or cable
• CPC Class Codes: A61F 2002/305 Snap connection
• CPC Class Codes: A61F 2002/30563 having elastic means or damping means, different from springs, e.g. including an elastomeric core or shock absorbers
• CPC Class Codes: A61F 2002/30565 having spring elements
• CPC Class Codes: A61F 2002/30574 with an integral complete or partial collar or flange
• CPC Class Codes: A61F 2002/30579 with mechanically expandable devices, e.g. fixation devices
• CPC Class Codes: A61F 2002/30604 modular
• CPC Class Codes: A61F 2002/30616 Sets comprising a plurality of prosthetic parts of different sizes or orientations
• CPC Class Codes: A61F 2002/30738 Sleeves
• CPC Class Codes: A61F 2002/30884 Fins or wings, e.g. longitudinal wings for preventing rotation within the bone cavity
• CPC Class Codes: A61F 2002/30904 serrated profile, i.e. saw-toothed
• CPC Class Codes: A61F 2002/30919 Sleeves
• CPC Class Codes: A61F 2002/443 having two transversal endplates and at least one intermediate component
• 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 2002/4629 : connected to the endoprosthesis or implant via a threaded connection
• CPC Class Codes: A61F 2002/4635 : using minimally invasive surgery
• CPC Class Codes: A61F 2210/0004 : bioabsorbable
• CPC Class Codes: A61F 2210/0014 : using shape memory or superelastic materials, e.g. nitinol
• CPC Class Codes: A61F 2220/0025 : Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
• CPC Class Codes: A61F 2220/005 : using adhesives
• CPC Class Codes: A61F 2220/0075 : sutured, ligatured or stitched, retained or tied with a rope, string, thread, wire or cable
• CPC Class Codes: A61F 2230/0069 : cylindrical

Abstract

An artificial disc device, comprising a plurality of interconnected elements, adapted to be assembled in situ.

Claims

1. An artificial disc device, comprising a plurality of interconnected elements arranged in a row, adapted to be assembled in situ so that at least two of the elements of the row contact a same vertebral endplate.

3. A device according to claim 1, wherein said elements are adapted to interlock at least in pairs.

9. A device according to claims 3, comprising at least one protrusion adapted to selectively deploy and engage a vertebral plate.

10. A device according to claim 9, wherein said protrusion is adapted to deploy when said deployment is complete.

11. A device according to claim 9, wherein said protrusion self-deploys.

13. A device according to claim 3, wherein said interlocking elements, after said interlocking have some freedom of relative motion.

14. A device according to claim 13, wherein said elements interlock using a self-locking mechanism.

15. A device according to claim 3, wherein said interlocking elements comprise alignment portions in the form of matching parts.

16. A device according to claim 15, wherein said alignment portions comprise male-female matching portions.

17. A device according to claim 1, comprising a delivery system attached to at least two of said elements.

22. A device according to claim 1, having an osteointegrating outer layer.

2. (canceled)

4. An artificial disc devices comprising at least a first row of interconnected elements and a second row of interconnected elements, each of the first row and the second row comprising a plurality of the elements adapted to be assembled in situ;

wherein the first row and the second row are each adapted to be placed near an opposite vertebral plate, along the axis of the spinal column of a patient into whom it is inserted so that each of the first row and the second row form one of a pair of opposing disc plates.

5. A device according to claim 4, wherein said plates define a ball joint between them.

6. A device according to claim 5, wherein said ball joint comprises a ball and socket and wherein said ball is integral to one of said plates.

21. A device according to claim 4, wherein said members are formed of metal.

7-8. -8. (canceled)

12. (canceled)

18-20. -20. (canceled)

23. A method of deploying a spinal disc prosthesis, comprising:

forming a path to a disc area;

providing a first disc portion to said disc area;

providing a second disc portion to said disc area; and

assembling said second disc portion to said first disc portion so that the portions are arranged in a row at said disc area so that at least two of the portions contact a same vertebral endplate.

25. A method according to claim 23, wherein said providing a first disc portion and said providing a second disc portion comprises aligning delivery elements each associated with one of said disc portions.

26. A method according to claim 25, comprising removing a delivery element associated with said first portion, but not an element associated with said second portion, when a third disc portion is provided using a third delivery element.

27. A method according to claim 23, comprising releasing at least one protrusion to contact an adjacent vertebral plate.

28. A method according to claim 27, wherein said release is after performed said assembly.

29. A method according to claim 27, wherein said release is performed during said assembly.

31. A method according to claim 23, wherein said path is to a side of a dura.

32. A method according to claim 23, wherein said path is for posterior access.

33. A method according to claim 23, wherein said path has a maximum diameter of less than 20 mm.

34. A method according to claim 23, wherein said path has a maximum diameter of less than 15 mm.

35. A method according to claim 23, wherein forming said path comprises inserting a cannula for said providing.

36. A method according to claim 23, wherein assembling comprises interlocking.

46. A method according to claim 23, repeated so that at least two rows are formed.

47. A method according to claim 23, wherein assembling includes sliding one of the portions with respect to another of the portions.

48. A method according to claim 23, performed so as to maintain a capacity for relative motion between plates.

24. (canceled)

30. (canceled)

37-45. -45. (canceled)

49. A method of assembling a spinal disc prosthesis within body, the method comprising:

(a) creating a space between opposing first and second vertebral endplates;

(b) assembling a first disc level opposing the first vertebral endplate within said space;

(c) additionally assembling a second disc level opposing the second vertebral endplate within said space;

wherein each of said assemblies comprises assembling at least two interconnectable elements in a row.

50. A method according to claim 49, wherein the assembly comprises a sliding engagement.