Bone screw fastener and apparatus for inserting and removing same

• US 6,755,836 B1
• Filed: 12/20/2002
• Issued: 06/29/2004
• Est. Priority Date: 12/20/2002
• Status: Expired due to Fees

• Current Assignee: High Plains Technology Group LLC
• Original Assignee: High Plains Technology Group LLC
• Inventors: Lewis, David H.
• Primary Examiner(s): Philogene, Pedro
• Assistant Examiner(s): Bonderer, David A
• Application Number:
  US10/326,701
• Publication Number:
  US 20040122442A1
• Time in Patent Office: 557 Days
• Field of Search: 606/72, 606/73, 606/164
• US Class Current: 606/916
• CPC Class Codes: A61B 17/861 specially shaped for gripping driver
• CPC Class Codes: A61B 17/8877 characterised by the cross-section of the driver bit
• CPC Class Codes: A61B 17/8886 holding the screw head

Abstract

A system for and methods of easily and securely inserting and removing a fastener usable during orthopedic surgery to promote proper healing of injured bone are disclosed. In at least one embodiment, the invention provides a system for positive, complete tri-modal retention of a bone media fastener element by a bone media fastener driver element so that three types of positional divergence of the driver relative to the fastener—bi-axial, bi-rotational, and bi-lateral—may be prevented. At least one embodiment of a bone media fastener apparatus may comprise a shaft element, a threaded bone engagement element, and a head element that itself may comprise a fastener-side, positive, complete tri-modal retention element that is engageable with a driver-side, positive, complete tri-modal retention element of a bone media fastener driver element to prevent bi-lateral divergence, bi-rotational divergence, and bi-axial divergence.

Claims

1. A bone media fastener and driver system comprising a bone media fastener element that comprises a shaft element, a threaded bone engagement element responsive to said shaft element, and a head element responsive to said shaft element;

a bone media fastener driver element that comprises an applied force receptor element and a force-to-bone fastener transfer element responsive to said applied force receptor element; and

a positive, complete trimodal retention element.

wherein said bone media fastener element is configured to allow for an initiation of engagement of said bone media fastener driver element with said bone media fastener element from more than one side of said bone medial fastener element.

2. A bone media fastener and driver system as described in claim 1 wherein said positive, complete trimodal retention element comprises a positive, complete trimodal obstructive retention element.

3. A bone media fastener and driver system as described in claim 1 wherein said positive, complete trimodal retention element comprises a bi-lateral divergence prevention element;

a bi-rotational divergence prevention element; and

a bi-axial divergence prevention element.

4. A bone media fastener and driver system as described in claim 2 wherein said positive, complete tri-modal obstructive retention element comprises a bi-lateral divergence prevention element;

a bi-rotational divergence prevention element; and

a bi-axial divergence prevenuon element.

5. A bone media fastener and driver system as described in claim 3 or 4 wherein said bi-lateral divergence prevention element comprises an extendable bi-lateral divergence prevention element.

6. A bone media fastener and driver system as described in claim 5 wherein each said bi-lateral divergence prevention element, said bi-rotational divergence prevention element, and said bi-axial divergence prevention element are discrete elements.

7. A bone media fastener and driver system as described in claim 5 wherein said bi-rotational divergence prevention element and said bi-axial divergence prevention element together form a combined, bi-rotational and bi-axial divergence prevention element.

8. A bone media fastener and driver system as described in claim 5 wherein at least a portion of said extendable, bi-lateral divergence prevention element comprises a portion of said bi-axial divergence prevention element.

9. A bone media fastener and driver system as described in claim 7 wherein at least a portion of said extendable, bi-lateral divergence prevention element comprises a portion of said combined bi-rotational and bi-axial divergence prevention element.

10. A bone media fastener and driver system as described in claim 7 wherein said combined bi-rotational and bi-axial divergence prevention element comprises an axis-orthogonal appendage element and an axis-orthogonal appendage receptor element engageable with said axis-orthogonal appendage element.

11. A bone media fastener and driver system as described in claim 10 wherein said axis-orthogonal appendage element and said axis-orthogonal appendage receptor element is each established at least partially along a diameter of a fastener/driver interface.

12. A bone media fastener and driver system as described in claim 11 wherein said axis-orthogonal appendage element comprises at least two distally convergent, diameter-parallel walls.

13. A bone media fastener and driver system as described in claim 12 wherein said axis-orthogonal appendage receptor element comprises at least two distally divergent, diameter-parallel walls.

14. A bone media fastener and driver system as described in claim 10 wherein said bone media fastener driver element comprises said axis-orthogonal appendage element and said bone media fastener element comprises said axis-orthogonal appendage receptor element.

15. A bone media fastener and driver system as described in claim 10 wherein said axis-orthogonal appendage element is adapted to surround at least a portion of said extendable, bi-lateral divergence prevention element in an extended configuration and said axis-orthogonal appendage receptor element is adapted to surround at least a portion of said bi-lateral divergence prevention receptor element.

16. A bone media fastener and driver system as described in claim 10 furter comprising an orthopedic healing aid adapted to respond to said bone media fastener element in an installed configuration, wherein said orthopedic healing aid is selected from the group of healing aids consisting of:

a plate and a rod.

17. A bone media fastener and driver system as described in claim 10 further comprising an engagement activation element to which said extendable, bi-lateral divergence prevention element is responsive.

18. A bone media fastener and driver system as described in claim 17 wherein said engagement activation element comprises an incrementally adjusting engagement activation element.

19. A bone media fastener and driver system as described in claim 5 wherein said bi-lateral divergence prevention element further comprises a bi-lateral divergence prevention receptor element adapted to receive said extendable, bi-lateral divergence prevention element.

20. A bone media fastener and driver system as described in claim 5 wherein said extendable, bi-lateral divergence prevention element is movable along a driver length axis.

21. A bone media fastener and driver system as described in claim 19 wherein said bone media fastener driver element comprises said extendable bi-lateral divergence prevention element and said bone media fastener element comprises said bi-lateral divergence prevention receptor element.

22. A bone media fastener and driver system as described in claim 21 wherein said extendable, bi-lateral divergence prevention element comprises a circular cross-sectional, extendable, bi-lateral divergence prevention element and said bi-lateral divergence prevention receptor element comprises a corresponding circular cross-sectional, bi-lateral divergence prevention receptor element.

23. A bone media fastener and driver system as described in claim 21 wherein said extendable, bi-lateral divergence prevention element comprises a tapered, extendable, bi-lateral divergence prevention element.

24. A bone media fastener and driver system as described in claim 19 wherein said extendable, bi-lateral divergence prevention element comprises a non-circular cross-sectional extendable, bi-lateral divergence prevention element and said bi-lateral divergence prevention receptor element comprises a corresponding non-circular cross-sectional lateral divergence prevention receptor element.

25. A bone media fastener and driver system as described in claim 24 wherein said bi-rotational divergence prevention element comprises at least a portion of said non-circular cross-sectional extendable bi-lateral divergence prevention element.

26. A bone media fastener and driver system as described in claim 23 wherein said bi-lateral divergence prevention element further comprises a fastener axis-to-driver axis alignment facilitation element.

27. A bone media fastener and driver system as described in claim 4 wherein said bi-rotational divergence prevention element and said bi-axial divergence prevention element together form a combined, bi-rotational and bi-axial divergence prevention element.

28. A bone media fastener and driver system as described in claim 27 wherein at least a portion of said bi-lateral divergence prevention element comprises a portion of said combined bi-rotational and bi-axial divergence prevention element.

29. A bone media fastener and driver system as described in claim 4 wherein at least a portion of said bi-lateral divergence prevention element comprises a portion of said bi-axial divergence prevention element.

30. A bone media fastener and driver system as described in claim 4 wherein said bi-lateral divergence prevention element comprises a fastener axis-to-driver axis alignment facilitation element.

31. A bone media fastener and driver system as described in claim 4 further comprising an orthopedic healing aid adapted to respond to said bone media fastener element in an installed configuration, wherein said orthopedic healing aid is selected from the group of healing aids consisting of:

a plate and a rod.

32. A bone media fastener and driver system as described in claim 4 further comprising an engagement activation element to which said extendable, bi-lateral divergence prevention element is responsive.

33. A bone media fastener and driver system as described in claim 32 wherein said engagement activation element comprises an incrementally adjusting engagement activation element.

34. A bone media fastener apparatus comprising a shaft element, a threaded bone engagement element responsive to said shaft element, and a head element responsive to said shaft element, wherein said head element comprises a fastener-side, positive, complete tri-modal retention element that is engageable with a driver-side, positive, complete tri-modal retention element of a bone media fastener driver element from more than one side of said head element.

35. A bone media fastener apparatus as described in claim 34 wherein said fastener-side, positive complete tri-modal retention element comprises a fastener-side, positive complete tri-modal obstructive retention element.

36. A bone media fastener apparatus as described in claim 34 wherein said fastener-side, positive complete tri-modal retention element comprises a fastener-side bi-lateral divergence prevention element, a fastener-side, bi-rotational divergence prevention element, and a fastener-side, bi-axial divergence prevention element.

37. A bone media fastener apparatus as described in claim 35 wherein said fastener-side, positive complete tri-modal obstructive retention element comprises a fastener-side bi-lateral divergence prevention element, a fastener-side, bi-rotational divergence prevention element, and a fastener-side, bi-axial divergence prevention element.

38. A bone media fastener apparatus as described in claim 36 or 37 wherein said fastener-side bi-lateral divergence prevention element comprises a bi-lateral divergence prevention receptor element.

39. A bone media fastener apparatus as described in claim 37 wherein each said fastener-side bi-lateral divergence prevention element, said fastener-side, bi-rotational divergence prevention element, and said fastener-side, bi-axial divergence prevention element are discrete elements.

40. A bone media fastener apparatus as described in claim 37 wherein said fastener-side, bi-rotational divergence prevention element, and said fastener-side, bi-axial divergence prevention element together form a fastener-side, combined bi-rotational and bi-axial divergence prevention element.

41. A bone media fastener apparatus as described in claim 38 wherein said fastener-side, bi-rotational divergence prevention element, and said fastener-side, bi-axial divergence prevention element together form a fastener-side, combined bi-rotational and bi-axial divergence prevention element.

42. A bone media fastener apparatus as described in claim 37 wherein at least a portion of said fastener-side bi-lateral divergence prevention element comprises a portion of said fastener-side, bi-axial divergence prevention element.

43. A bone media fastener apparatus as described in claim 38 wherein at least a portion of said bi-lateral divergence prevention receptor element comprises a portion of said fastener-side, bi-axial divergence prevention element.

44. A bone media fastener apparatus as described in claim 40 wherein at least a portion of said fastener-side bi-lateral divergence prevention element comprises a portion of said fastener-side, combined bi-rotational and bi-axial divergence prevention element.

45. A bone media fastener apparatus as described in claim 41 wherein at least a portion of said bilateral divergence prevention receptor element comprises a portion of said fastener-side, combined bi-rotational and bi-axial divergence prevention element.

46. A bone media fastener apparatus as described in claim 37 wherein said fastener-side, bi-axial divergence prevention element comprises an axis-orthogonal appendage receptor element established at least partially along a diameter of the fastener face.

47. A bone media fastener apparatus as described in claim 46 wherein said axis-orthogonal appendage receptor element comprises at least two distally divergent, diameter-parallel walls.

48. A bone media fastener apparatus as described in claim 47 wherein said axis-orthogonal appendage receptor element is adapted to surround at least a portion of said fastener-side bi-lateral divergence prevention element.

49. A bone media fastener apparatus as described in claim 41 wherein said bi-lateral divergence prevention receptor element comprises a circular cross-sectional bi-lateral divergence prevention receptor element.

50. A bone media fastener apparatus as described in claim 41 wherein said bi-lateral divergence prevention receptor element comprises a non-circular cross-sectional bi-lateral divergence prevention receptor element.

51. A bone media fastener apparatus as described in claim 50 wherein said fastener-side, bi-rotational divergence prevention element comprises at least a portion of said non-circular cross-sectional bi-lateral divergence prevention receptor element.

52. A bone media fastener apparatus as described in claim 38 wherein said bi-lateral divergence prevention receptor element is engageable with a tapered, extendable, bi-lateral divergence prevention element of said driver-side, positive, complete tri-modal retention element.

53. A bone media fastener driver apparatus comprising an applied force receptor element;

a force-to-bone fastener transfer element responsive to said applied force receptor element;

a driver-side, positive, complete tri-modal retention element responsive to said force-to-bone fastener transfer element and engageable with a fastener-side, positive, complete tri-modal retention element of said bone media fastener element from more than one side of said bone media fastener element.

54. A bone media fastener driver apparatus as described in claim 53 wherein said driver-side, positive complete tri-modal retention element comprises a driver-side, positive complete tri-modal obstructive retention element.

55. A bone media fastener driver apparatus as described in claim 53 wherein said driver-side, positive complete tri-modal retention element comprises a driver-side bi-lateral divergence prevention element, a driver-side, bi-rotational divergence prevention element, and a driver-side, bi-axial divergence prevention element.

56. A bone media fastener driver apparatus as described in claim 54 wherein said driver-side, positive complete tri-modal obstructive retention element comprises a driver-side bi-lateral divergence prevention element, a driver-side, bi-rotational divergence prevention element, and a driver-side, bi-axial divergence prevention element.

57. A bone media fastener driver apparatus as described in claim 55 or 56 wherein said driver-side bi-lateral divergence prevention element comprises a extendable bi-lateral divergence prevention element.

58. A bone media fastener driver apparatus as described in claim 57 wherein each said driver-side, bi-lateral divergence prevention element, said driver-side, bi-rotational divergence prevention element, and said driver-side, bi-axial divergence prevention element are discrete elements.

59. A bone media fastener driver apparatus as described in claim 53 wherein said driver-side, bi-rotational divergence prevention element and said driver-side bi-axial divergence prevention element together form a driver-side, combined bi-rotational and bi-axial divergence prevention element.

60. A bone media fastener driver apparatus as described in claim 57 wherein said driver-side, bi-rotational divergence prevention element and said driver-side, bi-axial divergence prevention element together form a driver-side, combined bi-rotational and bi-axial divergence prevention element.

61. A bone media fastener driver apparatus as described in claim 56 wherein at least a portion of said driver-side bi-lateral divergence prevention element comprises a portion of said driver-side bi-axial divergence prevention element.

62. A bone media fastener driver apparatus as described in claim 57 wherein at least a portion of said extendable, bi-lateral divergence prevention element comprises a portion of said driver-side, bi-axial divergence prevention element.

63. A bone media fastener driver apparatus as described in claim 59 wherein at least a portion of said driver-side, bi-lateral divergence prevention element comprises a portion of said driver-side, combined bi-rotational and bi-axial divergence prevention element.

64. A bone media fastener driver apparatus as described in claim 60 wherein at least a portion of said extendable, bi-lateral divergence prevention element comprises a portion of said driver-side, combined bi-rotational and bi-axial divergence prevention element.

65. A bone media fastener driver apparatus as described in claim 56 wherein said driver-side, bi-axial divergence prevention element comprises an axis-orthogonal appendage element established at least partially along a diameter of the driver face.

66. A bone media fastener driver apparatus as described in claim 65 wherein said axis-orthogonal appendage element comprises at least two distally convergent, diameter parallel walls.

67. A bone media fastener driver apparatus as described in claim 65 wherein said axis-orthogonal appendage element is adapted to surround at least a portion of said driver-side bi-lateral divergence prevention element.

68. A bone media fastener driver apparatus as described in claim 60 wherein said extendable, bi-lateral divergence prevention element comprises a circular cross-sectional, extendable, bi-lateral divergence prevention element.

69. A bone media fastener driver apparatus as described in claim 57 wherein said extendable bi-lateral divergence prevention element comprises a non-circular cross-sectional extendable bi-lateral divergence prevention element.

70. A bone media fastener driver apparatus as described in claim 69 wherein said driver-side, bi-rotational divergence prevention element comprises at least a portion of said non-circular cross-sectional extendable bi-lateral divergence prevention element.

71. A bone media fastener driver apparatus as described in claim 57 wherein said extendable bi-lateral divergence prevention element comprises a tapered, extendable, bi-lateral divergence prevention element.

72. A bone media fastener driver apparatus as described in claim 53 further comprising an engagement activation element to which said extendable, bi-lateral divergence prevention element is responsive.

73. A bone media fastener driver apparatus as described in claim 72 wherein said engagement activation element comprises an incrementally adjusting engagement activation element.