Spinal bone waxer

• US 5,531,749 A
• Filed: 11/09/1994
• Issued: 07/02/1996
• Est. Priority Date: 06/10/1993
• Status: Expired due to Fees

• Current Assignee: Aspen Surgical Products Incorporated (Aspen Surgical Products Holdings Incorporated)
• Original Assignee: Gary K. Michelson
• Inventors: Michelson, Gary K.
• Primary Examiner(s): Graysay, Tamara L.
• Application Number:
  US08/336,556
• Time in Patent Office: 601 Days
• Field of Search: 606/86, 606/92, 606/93, 606/167, 606/176, 606/84, 606/85, 604/289, 604/290, 604/293, 604/309, 15/236.01, 15/236.05, 15/236.06, 15/236.07, 15/236.08, 15/236.09, 15/105, 15/245.1, 451/557, 29/81.17, 29/81.11
• US Class Current: 606/93
• CPC Class Codes: A61B 17/88 Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices A61B17/7074 takes precedence
• CPC Class Codes: A61B 90/00 Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges protective face masks A41D13/11; surgeon's or patient's gowns or dresses A41D13/12; devices for carrying-off, for treatment of, or for carrying-over, body liquids A61M1/00

Abstract

A surgical spinal waxer is disclosed with a plurality of differently contoured surfaces for applying bone wax to a number of differently contoured portions of lamina in the spine. The different surfaces include a concave surface, a convex surface, two flat side surfaces, at least one which has a depression for holding bone wax and at least one which has an abraded area, a butted flat pushing surface, and a flat top surface. The shapes and dimensions of the different surfaces all correspond to the anatomy of the spinal canal.

Claims

1. A spinal bone waxer comprising:

a handle;

a substantially rigid shaft having a longitudinal axis terminating at a substantially rigid working waxer tip, said working waxer tip having means for applying bone wax to the vertebrae of the spine, said means for applying bone wax comprising a plurality of different shaped surfaces proportionate for the purpose of applying bone wax to the vertebrae of the spine during surgery, said plurality of surfaces comprising upper and lower curved surfaces and side walls, at least one of said side walls being substantially flat.

2. The spinal bone waxer of claim 1 including an end portion, said end portion being substantially perpendicular to the longitudinal axis of the shaft.

3. The spinal bone waxer of claim 2 including a flat top surface perpendicular to said end portion.

4. A spinal bone waxer comprising a handle and shaft having a working waxer tip, said working waxer tip having upper and lower curved surfaces and side walls, at least one of said side walls and surfaces having a depression for holding wax, and at least one of said surfaces having a roughened abrasive portion.

5. A spinal bone waxer comprising:

a handle;

a substantially rigid shaft having a substantially rigid working waxer tip, said waxer tip having means for applying bone wax to the vertebrae of the spine, said means for applying bone wax comprising a plurality of different shaped surfaces proportionate for the purpose of applying bone wax to the vertebrae of the spine during surgery, said plurality of surfaces comprising a concave surface, a convex surface and at least one substantially flat surface.

6. The spinal bone waxer of claim 5 wherein said working waxer tip has a flattened butted end surface.

7. A spinal bone waxer comprising a handle, a shaft having a working waxer tip, said waxer tip having a concave surface, a convex surface, and at least one flat surface having a depression for holding bone wax.

8. A spinal bone waxer comprising a handle, a substantially rigid shaft having a longitudinal axis and a substantially rigid working tip, said working tip having means for applying bone wax to the vertebrae of the human spine, said means for applying bone wax having a plurality of different shaped surfaces proportionate for the purpose of applying bone wax to the vertebrae of the human spine during surgery.

9. The spinal bone waxer of claim 8 in which said plurality of surfaces include a convex surface, a concave surface, and a flat butted end surface, said flat butted end surface being perpendicular to the axis of said shaft.

10. The spinal bone waxer of claim 9 in which said plurality of surfaces further includes a flat top surface perpendicular to said butted end surface.

11. The spinal bone waxer of claim 10 in which said plurality of surfaces further includes a first flat side surface.

12. The spinal bone waxer of claim 11 in which said plurality of surfaces includes a second flat side surface.

13. The spinal bone waxer of claim 11 in which said first flat side surface includes a depression therein for transporting and applying said bone wax.

14. The spinal bone waxer of claim 8 in which at least one of said plurality of surfaces has a depression therein for transporting and applying said bone wax.

15. A spinal bone waxer comprising a handle, a shaft having a longitudinal axis and a working tip, said working tip having means for applying bone wax to the vertebrae of the human spine, said means for applying bone wax having a plurality of different shaped surfaces proportionate for the purpose of applying bone wax to the vertebrae of the human spine during surgery, said plurality of surfaces including a convex surface, a concave surface, and a flat butted end surface, said flat butted end surface being perpendicular to the axis of said shaft, a flat top surface perpendicular to said butted end surface, a first flat side surface, and a second flat side surface, said second flat side surface comprising abrading means for abrading smooth the laminar edges of said vertebrae which have been surgically cut.

16. A spinal bone waxer comprising a handle, a shaft having a longitudinal axis and a working tip, said working tip having means for applying bone wax to the vertebrae of the human spine, said means for applying bone wax having a plurality of different shaped surfaces proportionate for the purpose of applying bone wax to the vertebrae of the human spine during surgery;

at least one of said plurality of surfaces comprising abrading means for abrading smooth the laminar edges of said vertebrae which have been surgically cut.

17. A spinal bone waxer comprising a handle and a substantially rigid shaft having a longitudinal axis terminating at a substantially rigid working waxer tip, said working waxer tip having a plurality of different shaped surfaces proportionate for the purpose of applying bone wax to the vertebrae of the human spine during surgery, said plurality of surfaces comprising an upper curved surface on a first side and a lower curved surface on a second opposite side, said lower curved surface being in a plane parallel to said upper curved surface, said working waxer tip terminating in a butted end having a first surface substantially perpendicular to said longitudinal axis and side walls.

18. The spinal bone waxer of claim 17 in which at least one of said side walls includes a depression for holding bone wax.

19. The spinal bone waxer of claim 17 in which said working waxer tip includes a roughened abrasive portion.

20. The spinal bone waxer of claim 17 in which said butted end includes a flat top surface perpendicular to said first flat surface.

21. The spinal bone waxer of claim 17 in which said upper curved surface is concave.

22. The spinal bone waxer of claim 17 in which said lower curved surface is convex.

23. The spinal bone waxer of claim 17 in which said shaft is tapered for improving the line of sight of the surgeon operating the spinal bone waxer.

24. A surgical instrument for the application of wax to the spine during surgery comprising:

a handle;

a substantially rigid shaft having an outer surface and a longitudinal axis terminating at a substantially rigid working tip, said working tip comprising;

a butted surface at the distal end of said working tip, said butted surface being in a plane substantially perpendicular to said longitudinal axis;

a concave surface oriented substantially parallel to and facing substantially perpendicular to said longitudinal axis, said concave surface having at least one portion offset from the outer surface of said shaft;

a convex surface oriented substantially parallel to and facing substantially perpendicular to said longitudinal axis said convex surface having at least one portion offset from the surface of said shaft;

a first flattened surface oriented substantially parallel to and facing substantially perpendicular to said longitudinal axis;

whereby the dimensions of said handle, said shaft, and said working tip are appropriate for use in the areas of the spine.

25. The surgical instrument claim 24 in which said working tip includes a second flattened surface oriented substantially parallel to, and facing substantially perpendicular to said longitudinal axis.

26. The surgical instrument of claim 24 in which at least one of said flattened surfaces of said working tip has an irregular surface.

27. The surgical instrument of claim 26 in which said irregular surface includes means for abrading.

28. The surgical instrument of claim 24 in which said working tip has at least one surface having at least one depression suitable for holding wax.

29. The surgical instrument of claim 24 in which said concave and convex surfaces are in parallel planes and form the obverse sides of said working tip.

30. The surgical instrument of claim 24 in which at least a part of said surgical instrument is disposable.

31. The surgical instrument of claim 24 in which said entire surgical instrument is disposable.

32. The surgical instrument of claim 24 in which said butted surface is irregular.

33. The surgical instrument of claim 24 in which said tip has at least one depression for holding bone wax.

34. The surgical instrument of claim 24 in which said working waxer tip includes a roughened abrasive portion.

35. The surgical instrument of claim 24 in which said shaft is tapered for improving the line of sight of the surgeon operating said surgical instrument.

36. A spinal bone waxer comprising a handle, a substantially rigid shaft having a longitudinal axis and a substantially rigid working tip, said working tip having means for applying bone wax to the vertebrae of the human spine, said means for applying bone wax having a plurality of different shaped surfaces proportionate for the purpose of applying bone wax to the vertebrae of the human spine during surgery, said plurality of surfaces including a convex surface, a concave surface, and a flat butted end surface, said flat butted end surface being perpendicular to the axis of said shaft, said plurality of surfaces including a flat top surface perpendicular to said butted end surface, a first flat side surface, a second flat side surface, said first flat side surface including a depression therein for transporting and applying said bone wax.

37. A spinal bone waxer comprising a handle and a substantially rigid shaft having a longitudinal axis terminating at a substantially rigid working waxer tip, said working waxer tip having a plurality of different shaped surfaces proportionate for the purpose of applying bone wax to the vertebrae of the human spine during surgery, said plurality of surfaces comprising an upper curved surface on a first side and a lower curved surface on a second opposite side, said lower curved surface being in a plane parallel to said upper curved surface, said working waxer tip terminating in a butted end having a first surface substantially perpendicular to said longitudinal axis and side walls, at least one of said side walls including a depression for holding bone wax.

38. A spinal bone waxer comprising a handle and a substantially rigid shaft having a longitudinal axis terminating at a substantially rigid working waxer tip, said working waxer tip having a plurality of different shaped surfaces proportionate for the purpose of applying bone wax to the vertebrae of the human spine during surgery, said plurality of surfaces comprising an upper curved surface on a first side and a lower curved surface on a second opposite side, said lower curved surface being in a plane parallel to said upper curved surface, said working waxer tip terminating in a butted end having a first surface substantially perpendicular to said longitudinal axis and side walls, said working waxer tip including a roughened abrasive portion.

39. A surgical instrument for the application of wax to the spine during surgery comprising:

a handle;

a substantially rigid shaft having an outer surface and a longitudinal axis terminating at a substantially rigid working tip, said working tip comprising;

a butted surface at the distal end of said working tip, said butted surface being in a plane substantially perpendicular to said longitudinal axis;

a concave surface oriented substantially parallel to and facing substantially perpendicular to said longitudinal axis, said concave surface having at least one portion offset from the surface of said shaft;

a convex surface oriented substantially parallel to and facing substantially perpendicular to said longitudinal axis said convex surface having at least one portion offset from the surface of said shaft;

at least one flattened surface oriented substantially parallel to and facing substantially perpendicular to said longitudinal axis;

whereby the dimensions of said handle, said shaft, and said working tip are appropriate for use in the areas of the spine, at least one of said flattened surfaces of said working tip having an irregular surface.

40. The surgical instrument of claim 39 in which said irregular surface includes means for abrading.

41. The surgical instrument of claim 39 in which said working waxer tip includes a roughened abrasive portion.