Bone fastener targeting and compression/distraction device for an intramedullary nail and method of use

• US 7,056,322 B2
• Filed: 03/28/2002
• Issued: 06/06/2006
• Est. Priority Date: 03/28/2002
• Status: Active Grant

• Current Assignee: Biomet Incorporated (Zimmer Biomet Holdings, Inc.)
• Original Assignee: DePuy Orthopaedics Incorporated (Johnson & Johnson)
• Inventors: Cooper, Paul S., Davison, Dale George
• Primary Examiner(s): Robert, Eduardo C.
• Assistant Examiner(s): RAMANA, ANURADHA
• Application Number:
  US10/108,679
• Publication Number:
  US 20040215204A1
• Time in Patent Office: 1,531 Days
• Field of Search: 606/53, 606/60, 606/62, 606/64, 606/86, 606/87, 606/98, 606/102, 606/105, 606/96, 606/97, 606/90, 606/104, 606/54, 606/67, 606/57, 606/58, 606/59
• US Class Current: 606/98
• CPC Class Codes: A61B 17/1725 for applying transverse screws or pins through intramedullary nails or pins
• CPC Class Codes: A61B 17/7216 for bone lengthening or compression A61B17/7258 takes precedence
• CPC Class Codes: A61B 17/7225 for bone compression
• CPC Class Codes: A61B 17/921 for intramedullary devices

Abstract

An intramedullary nail fastener targeting and bone compression/distraction device provides bone fastener alignment and compression or distraction of the bone. The intramedullary nail fastener targeting and bone compression/distraction device has a nail carrier portion, a bone fastener alignment and drill jig portion, and a compression/distraction mechanism. Various sizes of intramedullary nails are retained by the device while alignment carriages provides for proper drilling of the bone and placement of bone fasteners such as screws. The compression/distraction mechanism provides measured compression or distraction of the bone prior to final bone fastener placement.

Claims

1. A targeting device for an intramedullary nail comprising:

an intramedullary nail holder;

an arm extending from said intramedullary nail holder;

a support extending from said arm;

a first bone fastener targeting block fixedly mounted on said support, the first bone fastener targeting block having at least one bore therethrough for alignment with a bore in an intramedullary nail held by the intramedullary nail holder;

a second bone fastener targeting block movably mounted on said support; and

a bone fixator mounted on said support and configured to provide compression to a bone, wherein said support comprises;

a first rail; and

a second rail spaced from and parallel to said first rail.

2. The targeting device of claim 1, wherein said bone fixator is operative to provide measured compression of the bone.

3. The targeting device of claim 1, wherein said bone fixator comprises a body adjustably mounted on said support.

4. The targeting device of claim 3, wherein said bone fixator further comprises an applied compression force indicator.

5. The targeting device of claim 1, wherein said first bone fastener targeting block is proximate said arm, said fixator is distal said arm, and said second bone fastener targeting block is between said first bone fastener targeting block and said fixator.

6. The targeting device of claim 1, wherein said bone fixator is configured to provide distraction to the bone.

7. The targeting device of claim 1, wherein said intramedullary nail holder is configured to provide a medial-lateral orientation of the intramedullary nail and an anterior-posterior orientation of the intramedullary nail.

8. The targeting device of claim 1, wherein said second bone fastener targeting block is configured to be releasably positioned in a medial-lateral position of targeting and an anterior-posterior position of targeting.

9. The targeting device of claim 8, wherein said second bone fastener targeting block is configured to be releasably positioned in a plurality of medial-lateral positions of targeting and a plurality of anterior-posterior positions of targeting.

10. The targeting device of claim 1, wherein said first bone fastener targeting block and said second bone fastener targeting block are configured to allow a bone fastener preparation and fixation device to extend between said first and second rails.

11. The targeting device of claim 1, wherein said arm is pivotable about said intramedullary nail holder.

12. An intramedullary nail bone fastener targeting apparatus comprising:

an intramedullary nail holder;

an arm extending from said intramedullary nail holder;

a support extending from said arm;

a fixed bone fastener targeting block positioned on said support, the fixed bone fastener targeting block configured to align with a first set of holes in any one of various lengths of intramedullary nails to guide an object from the fixed bone fastener targeting block to the first set of holes;

a movable bone fastener targeting block positioned on said support to align with a second set of holes in any one of the various lengths of intramedullary nails; and

a bone fixation mechanism positioned on said support and operative to provide compression or distraction to a bone in which the intramedullary nail is inserted, wherein said support comprises;

a first rail; and

a second rail spaced from and parallel to said first rail.

13. The intramedullary nail bone fastener targeting apparatus of claim 12, wherein said bone fixation mechanism is operative to indicate compression and distraction force applied to the bone.

14. The intramedullary nail bone fastener targeting apparatus of claim 12, wherein said bone fixation mechanism comprises:

a body mounted on said support; and

an adjustor coupled to said body and operative to move said body along said support.

15. The intramedullary nail bone fastener targeting apparatus of claim 12, wherein said fixed bone fastener targeting block is proximate said arm, said fixation mechanism is distal said arm, and said movable bone fastener targeting block is between said fixed bone fastener targeting block and said fixation mechanism.

16. The intramedullary nail bone fastener targeting apparatus of claim 12, wherein said intramedullary nail holder is configured to provide a medial-lateral orientation of the intramedullary nail and an anterior-posterior orientation of the intramedullary nail.

17. The intramedullary nail bone fastener targeting apparatus of claim 12, wherein said movable bone fastener targeting block is releasably positionable in a medial-lateral position of targeting and an anterior-posterior position of targeting.

18. The intramedullary nail bone fastener targeting apparatus of claim 17, wherein said movable bone fastener targeting block is releasably positionable in a plurality of medial-lateral positions of targeting and a plurality of anterior-posterior positions of targeting.

19. The intramedullary nail bone fastener targeting apparatus of claim 12, wherein said fixed bone fastener targeting block and said movable bone fastener targeting block are configured to allow bone fastener preparation and fixation device to extend between said first and second rails.

20. The intramedullary nail bone fastener targeting apparatus of claim 12, wherein said arm is pivotable about said intramedullary nail holder.

21. An intramedullary nail bone fastener targeting device comprising:

an arm having a first end and a second end, said first end configured to receive an intramedullary nail holder that is configured to receive an intramedullary nail;

a support extending from said second end;

a first bone fastener targeting block fixedly retained on said support, said first bone fastener targeting block having a plurality of bores therethrough that are alignable with first bores in one end of an intramedullary nail that is adapted to be received by said intramedullary nail holder;

a second bone fastener targeting block movably retained on said support, said second bone fastener targeting block having a plurality of bores therethrough that are alignable with second bores in another end of the intramedullary nail that are distal from the first bores regardless of length of the intramedullary nail; and

a bone fixation block movably retained on said support, said bone fixation block having a bore therethrough that is adapted to retain a fixator that is attached to a bone, said bone fixation block providing compression or distraction of the bone via movement along said support while retaining the fixator.

22. The intramedullary nail bone fastener targeting device of claim 21, wherein said bone fixation block is operative to indicate compression and distraction force applied to the bone.

23. The intramedullary nail bone fastener targeting device of claim 21, wherein said bone fixation block comprises:

a body mounted on said support; and

an adjustor coupled to said body and operative to adjustably move said body along said support.

24. The intramedullary nail bone fastener targeting device of claim 21, wherein said first bone fastener targeting block is proximate said arm, said bone fixation block is distal said arm, and said second bone fastener targeting block is between said first bone fastener targeting block and said bone fixation block.

25. The intramedullary nail bone fastener targeting device of claim 21, wherein said first end is configured to rotate said intramedullary nail holder in a medial-lateral orientation and an anterior-posterior orientation.

26. The intramedullary nail bone fastener targeting device of claim 21, wherein said second bone fastener targeting block is releasably positionable in a medial-lateral position of targeting and an anterior-posterior position of targeting.

27. The intramedullary nail bone fastener targeting device of claim 26, wherein said second bone fastener targeting block is releasably positionable in a plurality of medial-lateral positions and a plurality of anterior-posterior positions.

28. The intramedullary nail bone fastener targeting device of claim 21, wherein said support comprises:

a first rail; and

a second rail spaced from and parallel to said first rail.

29. The intramedullary nail bone fastener targeting device of claim 28, wherein said bores of said first bone fastener targeting block and said bores of said second bone fastener targeting block are configured to allow bone fastener preparation and fixation device to extend between said first and second rails.

30. The intramedullary nail bone fastener targeting device of claim 21, wherein said arm is pivotable about said intramedullary nail holder.

31. A targeting device for an intramedullary nail comprising:

a support;

an intramedullary nail holder attached to the support and configured to retain an intramedullary nail having a first set of at least one bore and a second set of at least one bore;

a first positioning block mounted on the support and having at least one bore configured such that when the intramedullary nail is retained by the intramedullary nail holder, the at least one bore of the first positioning block aligns with the at least one bore of the first set of at least one bore;

a second positioning block mounted on the support and having at least one bore configured such that when the intramedullary nail is retained by the intramedullary nail holder, the at least one bore of the second positioning block aligns with the at least one bore of the second set of at least one bore; and

an adjustor mounted on the support and movable with respect to the first positioning block, the adjustor having a bore therethrough configured to retain a bone contacting and/or penetrating device when the intermedullary nail is inserted into the medullary canal of a bone.

32. The targeting device of claim 31, wherein the second positioning block is releasably positionable on the support in a plurality of medial-lateral positions and a plurality of anterior-posterior positions.

33. The targeting device of claim 31, further comprising:

an adjustment knob operably engaging the adjustor such that as the adjustment knob is rotated, the adjustor moves along the support arm.

34. The targeting device of claim 33, wherein the adjustor and the first positioning block define a first axis, the targeting device further comprising:

an applied force indicator operably connected to the adjustor to indicate the force applied to a bone through the bone contacting and/or penetrating device along an axis parallel to the first axis.