TOTAL ARTIFICIAL SPINO-LAMINAR PROSTHETIC REPLACEMENT

• US 20110125269A1
• Filed: 12/31/2010
• Published: 05/26/2011
• Est. Priority Date: 11/25/2009
• Status: Active Grant

• Current Assignee: Moskowitz Family LLC
• Original Assignee: Moskowitz Family LLC
• Inventors: MOSKOWITZ, Ahmnon D., MOSKOWITZ, Nathan C., SUGALSKI, Eric, MOSKOWITZ, Mosheh T.
• Granted Patent: US 9,901,455 B2
• Time in Patent Office: Days
• US Class Current: 623/17.11
• CPC Class Codes: A61B 17/7071 Implants for expanding or repairing the vertebral arch or wedged between laminae or pedicles; 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 2002/30471 connected by a hinged linkage mechanism, e.g. of the single-bar or multi-bar linkage type
• 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 2002/30616 Sets comprising a plurality of prosthetic parts of different sizes or orientations
• CPC Class Codes: A61F 2002/30624 Hinged joint, e.g. with transverse axle restricting the movement
• CPC Class Codes: A61F 2002/30649 Ball-and-socket joints
• CPC Class Codes: A61F 2002/30948 using computerized tomography, i.e. CT scans
• CPC Class Codes: A61F 2002/30952 using CAD-CAM techniques or NC-techniques
• CPC Class Codes: A61F 2002/449 comprising multiple spinal implants located in different intervertebral spaces or in different vertebrae
• CPC Class Codes: A61F 2310/00023 Titanium or titanium-based alloys, e.g. Ti-Ni alloys

Abstract

A total artificial spinous process (spino)-laminar prosthesis (TASP-LP) including a body having a portion forming a spinous process extending away from the body, a first lamina portion extending from a first side of the body, and a second lamina portion extending from a second side of the body, wherein the first lamina portion and the second lamina portion are disposed on opposite sides of the spinous process.

Claims

1. A total artificial spinous process (spino)-laminar prosthesis (TASP-LP) comprising:

a body having a portion forming a spinous process extending away from the body;

a first lamina portion extending from a first side of the body; and

a second lamina portion extending from a second side of the body,

wherein the first lamina portion and the second lamina portion are disposed on opposite sides of the spinous process.

2. The total artificial spinous process (spino)-laminar prosthesis (TASP-LP) of claim 1, wherein the spinous process includes an opening for muscle or fascia suture attachment.

3. The total artificial spinous process (spino)-laminar prosthesis (TASP-LP) of claim 1, wherein the spinous process includes a plurality of openings for muscle or fascia suture attachment.

4. The total artificial spinous process (spino)-laminar prosthesis (TASP-LP) of claim 1, wherein the spinous process includes two lobes mimicking a natural anatomy of a spinal element.

5. The total artificial spinous process (spino)-laminar prosthesis (TASP-LP) of claim 1, wherein the spinous process includes a single lobe mimicking a natural anatomy of a spinal element.

6. The total artificial spinous process (spino)-laminar prosthesis (TASP-LP) of claim 4, wherein each of the two lobes includes an opening for muscle or fascia suture attachment.

7. The total artificial spinous process (spino)-laminar prosthesis (TASP-LP) of claim 1, wherein each of the first lamina portion and the second lamina portion include an opening for receiving an attachment device for securing the first lamina portion and the second lamina portion to natural lamina of a spinal element.

8. The total artificial spinous process (spino)-laminar prosthesis (TASP-LP) of claim 7, further comprising:

the attachment device engaging the opening.

9. The total artificial spinous process (spino)-laminar prosthesis (TASP-LP) of claim 8, wherein the attachment device includes one of a translaminar screw, a flathead screw, and a self-tapping screw.

10. The total artificial spinous process (spino)-laminar prosthesis (TASP-LP) of claim 8, wherein the attachment device includes one of a pin and a staple.

11. The total artificial spinous process (spino)-laminar prosthesis (TASP-LP) of claim 10, wherein the pin or the staple includes a flat portion, a round portion, a portion having hooks, or a portion having ridges.

12. The total artificial spinous process (spino)-laminar prosthesis (TASP-LP) of claim 8, wherein a surface of each of the first lamina portion and the second lamina portion includes a recess surrounding the opening for receiving a head of the attachment device such that the head of the attachment device is countersunk into or flush with the surface.

13. The total artificial spinous process (spino)-laminar prosthesis (TASP-LP) of claim 8, wherein a surface of each of the first lamina portion and the second lamina portion engages the attachment device to lock the attachment device with the surface.

14. The total artificial spinous process (spino)-laminar prosthesis (TASP-LP) of claim 1, wherein each of the first lamina portion and the second lamina portion includes a plurality of openings for receiving attachment devices.

15. The total artificial spinous process (spino)-laminar prosthesis (TASP-LP) of claim 14, further comprising:

a plurality of attachment devices respectively engaging the plurality of openings.

16. The total artificial spinous process (spino)-laminar prosthesis (TASP-LP) of claim 1, wherein each of the first lamina portion and the second lamina portion includes an underside facing away from the body and having a contoured portion.

17. The total artificial spinous process (spino)-laminar prosthesis (TASP-LP) of claim 16, wherein a contour of the contoured portion of the underside of the first lamina portion is different than a contour of the contoured portion of the underside of the second lamina portion.

18. The total artificial spinous process (spino)-laminar prosthesis (TASP-LP) of claim 1, wherein each of the first lamina portion and the second lamina portion includes a relief opening or groove that permits each of the first lamina portion and the second lamina portion to flex.

19. The total artificial spinous process (spino)-laminar prosthesis (TASP-LP) of claim 1, wherein each of the first lamina portion and the second lamina portion includes a pair of openings for receiving attachment devices, and

wherein each of the first lamina portion and the second lamina portion include a relief opening or groove between the pair of openings that permits each of the first lamina portion and the second lamina portion to flex along an area adjacent to each of the pair of openings.

20. The total artificial spinous process (spino)-laminar prosthesis (TASP-LP) of claim 1, wherein each of the first lamina portion and the second lamina portion includes a thinned portion having a thickness that is less than a thickness of an adjacent portion, thereby permitting each of the first lamina portion and the second lamina portion to flex at the thinned portion.

21. The total artificial spinous process (spino)-laminar prosthesis (TASP-LP) of claim 1, further comprising:

a first hinged extension that is movable with respect to the first lamina portion and a second hinged extension that is movable with respect to the second lamina portion.

22. The total artificial spinous process (spino)-laminar prosthesis (TASP-LP) of claim 21, further comprising:

a first hinge pin rotatably coupling the first hinged extension to the first lamina portion; and

a second hinge pin rotatably coupling the second hinged extension to the second lamina portion,

wherein each of the first hinged extension and the second hinged extension is pivotable with respect to the first lamina portion and the second lamina portion, respectively, for allowing individualized alignment of the first hinged extension and the second hinged extension with natural laminar having differing inclines.

23. The total artificial spinous process (spino)-laminar prosthesis (TASP-LP) of claim 21, wherein each of the first hinged extension and the second hinged extension is pivotable between a neutral position that is parallel to a plane of the first lamina portion and the second lamina portion, respectively, an elevated position that is at a positive angle with respect to the plane, and a depressed position that is at a negative angle with respect to the plane.

24. The total artificial spinous process (spino)-laminar prosthesis (TASP-LP) of claim 1, wherein the spinous process comprises a first spinous process portion and a second spinous process portion,

wherein the first spinous process portion and the second spinous process portion are pivotable with respect to each other to change a distance between the first lamina portion and the second lamina portion, thereby allowing for accommodating for different laminectomy widths.

25. The total artificial spinous process (spino)-laminar prosthesis (TASP-LP) of claim 24, comprising:

a spinous process hinge rotatably coupling the first spinous process portion and the second spinous process portion.

26. The total artificial spinous process (spino)-laminar prosthesis (TASP-LP) of claim 1, further comprising:

a first hinged extension that is movable with respect to the first lamina portion and a second hinged extension that is movable with respect to the second lamina portion, wherein the spinous process comprises a first spinous process portion and a second spinous process portion, and

wherein the first spinous process portion and the second spinous process portion are pivotable with respect to each other to change a distance between the first lamina portion and the second lamina portion.

27. The total artificial spinous process (spino)-laminar prosthesis (TASP-LP) of claim 1, further comprising:

a first hinged extension that is movable with respect to the first lamina portion;

a first hinge pin rotatably coupling the first hinged extension to the first lamina portion;

a second hinged extension that is movable with respect to the second lamina portion;

a second hinge pin rotatably coupling the second hinged extension to the second lamina portion,

wherein each of the first hinged extension and the second hinged extension is pivotable with respect to the first lamina portion and the second lamina portion, respectively, for allowing individualized alignment of the first hinged extension and the second hinged extension with natural laminar having differing inclines, and

wherein the spinous process comprises;

a first spinous process portion;

a second spinous process portion, and

a spinous process hinge rotatably coupling the first spinous process portion and the second spinous process portion,

wherein the first spinous process portion and the second spinous process portion are pivotable about the spinous process hinge to change a distance between the first lamina portion and the second lamina portion for allowing for accommodating of different laminectomy widths.

28. The total artificial spinous process (spino)-laminar prosthesis (TASP-LP) of claim 1, wherein one of the body, the spinous process, the first lamina portion, and the second lamina portion comprises at least one of titanium and a bio-compatible material

29. The total artificial spinous process (spino)-laminar prosthesis (TASP-LP) of claim 1, comprising:

a second body having a second portion forming a second spinous process extending away from the second body;

a third lamina portion extending from a first side of the second body;

a fourth lamina portion extending from a second side of the second body,

wherein the third lamina portion and the fourth lamina portion are disposed on opposite sides of the second spinous process;

a first bridge coupling the first lamina portion of the body to the third lamina portion of the second body; and

a second bridge coupling the second lamina portion of the body to the fourth lamina portion of the second body.

30. The total artificial spinous process (spino)-laminar prosthesis (TASP-LP) of claim 29, wherein the first lamina portion of the body is integrally formed with the third lamina portion of the second body;

and

wherein the second lamina portion of the body is integrally formed with the fourth lamina portion of the second body.

31. The total artificial spinous process (spino)-laminar prosthesis (TASP-LP) of claim 29, comprising:

a third body having a third portion forming a third spinous process extending away from the third body;

a fifth lamina portion extending from a first side of the third body;

a sixth lamina portion extending from a second side of the third body,

wherein the fifth lamina portion and the sixth lamina portion are disposed on opposite sides of the third spinous process;

a third bridge coupling the third lamina portion of the second body to the fifth lamina portion of the third body; and

a fourth bridge coupling the fourth lamina portion of the second body to the sixth lamina portion of the third body.

32. The total artificial spinous process (spino)-laminar prosthesis (TASP-LP) of claim 1, comprising:

a second body having a second portion forming a second spinous process extending away from the second body;

a third lamina portion extending from a first side of the second body;

a fourth lamina portion extending from a second side of the second body, wherein the third lamina portion and the fourth lamina portion are disposed on opposite sides of the second spinous process; and

a connecting bridge coupling the spinous process of the body to the second spinous process of the second body.

33. The total artificial spinous process (spino)-laminar prosthesis (TASP-LP) of claim 32, comprising:

a second body having a second portion forming a second spinous process extending away from the second body;

a third lamina portion extending from a first side of the second body;

a fourth lamina portion extending from a second side of the second body,

wherein the third lamina portion and the fourth lamina portion are disposed on opposite sides of the second spinous process; and

a connecting bridge coupling the spinous process of the body to the second spinous process of the second body.

34. The total artificial spinous process (spino)-laminar prosthesis (TASP-LP) of claim 32, wherein the spinous process of the body is integrally formed with the second spinous process of the second body.

35. The total artificial spinous process (spino)-laminar prosthesis (TASP-LP) of claim 1, wherein one of the body, the spinous process, the first lamina portion, and the second lamina portion comprises a cavity or area for receiving bone material.

36. The total artificial spinous process (spino)-laminar prosthesis (TASP-LP) of claim 1, wherein one of the body, the spinous process, the first lamina portion, and the second lamina portion comprises an opening for muscle or fascia suture attachment.

40. The total artificial spinous process (spino)-laminar prosthesis (TASP-LP) of claim 1, wherein an overall shape, a height, a width, an orientation, and an angulation of the body, the spinous process, the first lamina portion, and the second lamina portion mimics an overall shape, a height, a width, an orientation, and an angulation of a natural spine portion based on a 3-dimensional computer rendition of the natural spine portion.

41. A method of implanting the total artificial spinous process (spino)-laminar prosthesis (TASP-LP) of claim 1, the method comprising:

measuring dimensions and geometry of a natural spine portion of a patient;

generating a 3-dimensional computer rendition of the natural spine portion;

forming the body, the spinous process, the first lamina portion, and the second lamina portion to mimic the natural spine portion based on the 3-dimensional computer rendition of the natural spine portion.

42. The method of claim 41, wherein the dimensions and the geometry of the natural spine portion are generated using MRI-CT imaging techniques.

43. The method of claim 41, wherein an overall shape, a height, a width, an orientation, and an angulation of the body, the spinous process, the first lamina portion, and the second lamina portion are measured.

44. The method of claim 43, wherein an overall shape, a height, a width, an orientation, and an angulation of the body, the spinous process, the first lamina portion, and the second lamina portion of the total artificial spinous process (spino)-laminar prosthesis (TASP-LP) are formed to mimic the overall shape, the height, the width, the orientation, and the angulation of the natural spine portion based on the 3-dimensional computer rendition of the natural spine portion.

45. The method of claim 41, comprising:

coupling the total artificial spinous process (spino)-laminar prosthesis (TASP-LP) to a natural spine in place of the natural spine portion.

46. The method of claim 41, wherein the total artificial spinous process (spino)-laminar prosthesis (TASP-LP) further comprises:

a first hinged extension that is movable with respect to the first lamina portion and a second hinged extension that is movable with respect to the second lamina portion, wherein the method includes;

pivoting each of the first hinged extension and the second hinged extension with respect to the first lamina portion and the second lamina portion, respectively, to individually align the first hinged extension and the second hinged extension with individual inclines of the natural spine.

47. The method of claim 41, wherein the spinous process comprises a first spinous process portion and a second spinous process portion, wherein the first spinous process portion and the second spinous process portion are pivotable with respect to each other to change a distance between the first lamina portion and the second lamina portion,

wherein the method includes pivoting the first spinous process portion and the second spinous process portion with respect to each other to change the distance between the first lamina portion and the second lamina portion.

48. The method of claim 41, wherein the total a artificial spinous process (spino)-laminar prosthesis (TASP-LP) further comprises a first hinged extension that is movable with respect to the first lamina portion and a second hinged extension that is movable with respect to the second lamina portion,

wherein the spinous process comprises a first spinous process portion and a second spinous process portion,

wherein the first spinous process portion and the second spinous process portion are pivotable with respect to each other to change a distance between the first lamina portion and the second lamina portion, and

wherein the method includes:

pivoting the first spinous process portion and the second spinous process portion with respect to each other to change the distance between the first lamina portion and the second lamina portion; and

pivoting each of the first hinged extension and the second hinged extension with respect to the first lamina portion and the second lamina portion, respectively, to individually align the first hinged extension and the second hinged extension with individual inclines of the natural spine.

37. A total artificial spinous process (spino)-laminar prosthesis (TASP-LP) comprising:

at least two of a first module, a second module, and a third module,

wherein each of the first module, the second module, and the third module comprises;

a body having a portion forming a spinous process extending away from the body;

a first lamina portion extending from a first side of the body; and

a second lamina portion extending from a second side of the body,

wherein the first lamina portion and the second lamina portion are disposed on opposite sides of the spinous process.

38. The total artificial spinous process (spino)-laminar prosthesis (TASP-LP) of claim 37, wherein the first module is integrally formed with the second module.

39. The total artificial spinous process (spino)-laminar prosthesis (TASP-LP) of claim 37, comprising the first module, the second module, and the third module,

wherein the first module, the second module, and the third module are integrally formed with each other.

49. A method of implanting the total artificial spinous process (spino)-laminar prosthesis (TASP-LP) of claim 37, the method comprising:

measuring dimensions and geometry of a natural spine portion of a patient;

generating a 3-dimensional computer rendition of the natural spine portion;

forming the at least two of the first module, the second module, and the third module to mimic the natural spine portion based on the 3-dimensional computer rendition of the natural spine portion.

50. The method of claim 49, comprising:

coupling the at least two of the first module, the second module, and the third module to a natural spine in place of the natural spine portion.

51. The method of claim 50, wherein the first module is integrally formed with the second module.

52. The method of claim 50, wherein the total artificial spinous process (spino)-laminar prosthesis (TASP-LP) includes the first module, the second module, and the third module,

wherein the first module is integrally formed with the second module, and

wherein the third module is separate from the first module and the second module.

53. The method of claim 50, wherein the first module is integrally formed with the second module and the third module.

54. The method of claim 49, further comprising:

selecting a combination and arrangement of the first module, the second module, and the third module based on a width and a length of the natural spine portion; and

coupling the selected combination and arrangement of the first module, the second module, and the third module to a natural spine in place of the natural spine portion.