Spinal prostheses

• US 20050102028A1
• Filed: 01/05/2004
• Published: 05/12/2005
• Est. Priority Date: 11/07/2003
• Status: Active Grant

• Current Assignee: Premia Spine Ltd.
• Original Assignee: Impliant Ltd. (Premia Spine Ltd.)
• Inventors: Arnin, Uri, Sudin, Yuri, Tauber, Michael, Anekstein, Yoram
• Granted Patent: US 7,011,685 B2
• Time in Patent Office: Days
• US Class Current: 623/17.130
• CPC Class Codes: A61B 17/7043 with a longitudinal element fixed to one or more transverse elements which connect multiple screws or hooks
• CPC Class Codes: A61B 17/7062 Devices acting on, attached to, or simulating the effect of, vertebral processes, vertebral facets or ribs rib fixation devices A61B17/8076; Tools for such devices
• CPC Class Codes: A61B 17/7064 Devices acting on, attached to, or simulating the effect of, vertebral facets; Tools therefor
• CPC Class Codes: A61F 2/4405 for apophyseal or facet joints, i.e. between adjacent spinous or transverse processes devices implanted between spinous or transverse processes A61B17/7062
• CPC Class Codes: A61F 2002/30387 Dovetail connection
• 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 2002/30578 having apertures, e.g. for receiving fixation screws
• CPC Class Codes: A61F 2002/30604 modular
• CPC Class Codes: A61F 2002/30841 Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes
• CPC Class Codes: A61F 2220/0025 Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
• 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 2310/00796 Coating or prosthesis-covering structure made of a phosphorus-containing compound, e.g. hydroxy(l)apatite
• CPC Class Codes: Y10S 606/91 Polymer

Abstract

An article including a spinal prosthesis having a unitary body with at least three attachment points attachable to spinal structure, the unitary body including a flexure assembly positioned between first and second attachment members, wherein flexure of the flexure assembly permits movement of the first attachment member relative to the second attachment member.

Claims

1. An article comprising:

a spinal prosthesis comprising a unitary body with at least three attachment points attachable to a spinal structure, said unitary body comprising a flexure assembly positioned between first and second attachment members, wherein flexure of said flexure assembly permits movement of the first attachment member relative to the second attachment member.

2. The article according to claim 1, wherein said first and second attachment members are formed with mounting holes adapted for a mechanical fastener to pass through and into the spinal structure.

6. The article according to claim 1, wherein said flexure assembly comprises more than one flexure member between said first and second attachment members.

7. The article according to claim 1, wherein at least a portion of said flexure assembly is attached to said first and second attachment members with a plurality of locking members.

8. The article according to claim 1, wherein at least a portion of said flexure assembly is integrally formed with said first and second attachment members.

9. The article according to claim 7, wherein said locking members comprise plate-like elements secured to said first and second attachment members with mechanical fasteners.

10. The article according to claim 9, wherein said locking members comprise at least one lug extending generally perpendicularly from said plate-like elements, around which at least one stopper is engaged.

11. The article according to claim 1, wherein said flexure assembly comprises a boot placed at least partially around inner portions of said first and second attachment members, said boot being connected to said first and second attachment members.

12. The article according to claim 11, wherein said boot is elastomeric.

13. The article according to claim 1, wherein said flexure assembly is adapted to flex omnidirectionally.

14. The article according to claim 1, further comprising a plurality of pedicle screws attached to or integrally formed with said spinal prosthesis.

15. The article according to claim 14, wherein said pedicle screws comprise polyaxial pedicle screws having a threaded shank and a polyaxial swivel head.

16. The article according to claim 15, wherein said threaded shank is attached to or integrally formed with said spinal prosthesis.

17. The article according to claim 15, wherein said polyaxial swivel head is attached to or integrally formed with said spinal prosthesis.

19. The article according to claim 1, wherein said flexure assembly comprises a multi-part articulating assembly, including a first joint member that has a convex contour that articulates with a second joint member that has a concave contour that corresponds to and glides over the convex contour of the first joint member, said first and second joint members being attached to or integrally part of said attachment members.

20. The article according to claim 19, further comprising a stopper that limits the flexure of said flexure assembly and limits relative movement of the attachment members with respect to one another.

3. (canceled)

4. (canceled)

5. (canceled)

18. (canceled)