Adjustable resection guide

• US 7,938,833 B2
• Filed: 11/14/2006
• Issued: 05/10/2011
• Est. Priority Date: 11/14/2006
• Status: Expired due to Fees

• Current Assignee: Howmedica Osteonics Corp. (Stryker Corporation)
• Original Assignee: Howmedica Osteonics Corp. (Stryker Corporation)
• Inventors: Bastian, Adam
• Primary Examiner(s): Barrett; Thomas C
• Assistant Examiner(s): Waggle, Jr.; Larry E
• Application Number:
  US11/599,152
• Publication Number:
  US 20080114369A1
• Time in Patent Office: 1,638 Days
• Field of Search: 606/86.R, 606 87- 88, 606 96- 98, 606167-183, 623/18.11, 623 2014- 2017, 623/20.21
• US Class Current: 606/87
• CPC Class Codes: A61B 17/155 Cutting femur
• CPC Class Codes: A61B 17/157 Cutting tibia

Abstract

A resection guide having an alignment barrel with holes that pass through the entire cross-section of the alignment barrel is disclosed. An alignment guide is mounted on the alignment barrel. Alignment guide can translate and rotate with respect to alignment barrel. The alignment guide has holes that extend through it. A resection plate is located at one end of the alignment guide. The resection plate has a resection surface. The resection guide is located on a bone using a navigation system and attached to the bone by driving two nails through the holes on the alignment barrel and one nail through one of the holes on the alignment guide. The resection surface is used to guide a tool for resecting the bone.

Claims

1. A resection guide comprising:

an alignment barrel having a pair of first surfaces and a second surface positioned between the pair of first surfaces, the first surfaces each having a first diameter and the second surface having a second diameter smaller than the first diameter;

at least a first hole and a second hole formed on the alignment barrel;

an alignment guide rotatably and slidably mounted on the alignment barrel, the alignment guide mounted on the second surface;

at least a third hole formed on the alignment guide; and

a resection plane located at one end of the alignment guide, the resection plane being capable of guiding a tool for resecting an end of a bone, wherein the resection plane may be translated in two planes and rotated around two axis after the resection guide is attached to the bone through one of the first or the second hole.

2. The resection guide of claim 1, wherein the axis of the first hole and the second hole are angled with respect to each other.

3. The resection guide of claim 1, further comprising:

a plurality of the first holes; and

a plurality of the second holes;

wherein the set of first holes and the set of second holes form a matched set of holes, and wherein each matched set of the first hole and the second hole is spaced a fixed distance from each other.

4. The resection guide of claim 3, further comprising:

a plurality of the third holes are formed on the alignment guide, the holes formed on the alignment guide being spaced a fixed distance from each other.

5. The resection guide of claim 4, wherein once the resection guide is attached to the bone, the resection plane can be moved in fixed increment without attachment at a different location.

6. The resection guide of claim 4, further comprising:

a mounting means formed on the resection plane.

7. The resection guide of claim 6, wherein the mounting means is an opening.

8. A resection guide comprising:

an alignment barrel having a first diameter and a second diameter, the barrel having a central longitudinal axis extending through a length of the alignment barrel, a first surface formed on the alignment barrel, the first surface having the first diameter, and a plurality of holes located on the first surface;

an alignment guide rotatably and slidably mounted on the second diameter portion of the alignment barrel, a second surface formed on the alignment guide;

a resection plane parallel to the central longitudinal axis, the resection plane located at one end of the alignment guide, the resection plane being capable of guiding a tool for resecting an end of a bone; and

a plurality of holes located on the second surface of the alignment guide.

9. The resection guide of claim 8, wherein the holes located on the second surface are spaced a fixed distance from each other.

10. The resection guide of claim 9, wherein once the resection guide is attached to the bone, the resection plane can be moved in medial-lateral and distal-proximal direction in fixed increment without reattachment at a different location.

11. The resection guide of claim 9, further comprising:

a mounting means formed on the resection plane.

12. The resection guide of claim 11, wherein the mounting means is an opening.

13. A bone resection system comprising:

an alignment barrel;

at least a first hole and a second hole formed on the alignment barrel;

an alignment guide rotatably and slidably mounted on the alignment barrel;

at least one hole formed on the alignment guide;

a resection plane located at one end of the alignment guide, the resection plane being capable of guiding a tool for resecting an end of a bone;

a first pin, the first pin when driven through the first hole on the alignment barrel stopping the movement of the resection plane in the medial-lateral direction and stopping the rotation of the resection plane so that the internal-external rotation angle of the resection plane is fixed;

a second pin, the second pin when driven through the second hole stopping the rotation of the resection plane so as to fix the Varus-Valgus angle of the resection plane without fixing the flexion-extension angle of the resection plane; and

a third pin, the third pin when driven through the hole on the alignment guide stopping the movement of the resection plane in the distal-proximal direction and stopping the rotation of the resection plane so that the flexion-extension angle of the resection plane is fixed.

14. The bone resection system of claim 13, further comprising:

a first surface formed on the alignment barrel, the first surface having a first diameter; and

a second surface formed on the alignment barrel, the second surface having a second diameter, the second diameter being smaller than the first diameter.

15. The bone resection system of claim 14, wherein the alignment guide is mounted on the second surface formed on the alignment barrel.

16. The bone resection system of claim 13, wherein the axis of the first hole and the second hole are angled with respect to each other.

17. The bone resection system of claim 13, further comprising:

a plurality of the first holes; and

a plurality of second holes;

wherein the set of first holes and the set of second holes formed a matched set of holes, and wherein each matched set of the first hole and the second hold is spaced a fixed distance from each other.

18. The bone resection system of claim 17, further comprising:

a plurality of the third holes formed on the alignment guide, the holes formed on the alignment guide being spaced a fixed distance from each other.

19. The bone resection system of claim 18, wherein, once the resection system is attached to the bone, the resection plane can be moved in fixed increment without attachment at a different location.

20. The bone resection system of claim 18, further comprising:

a mounting means formed on the resection plane.

21. The bone resection system of claim 20, wherein the mounting means is an opening.

49. The system of claim 14, further including a third surface having a third diameter, wherein the second surface is intermediate the first and third surfaces, and the second diameter is smaller than the third diameter, and wherein the alignment guide is mounted on the second surface formed on the alignment barrel.

22. A resection guide comprising:

an alignment barrel having a first diameter, a second diameter, a pair of first surfaces formed on the alignment barrel, and a second surface intermediate the pair of first surfaces, the pair of first surface having the first diameter and the second surface having the second diameter;

an alignment guide rotatably and slidably mounted on the second surface of the alignment barrel; and

a resection plane located at one end of the alignment guide, the resection plane being located on the bone with respect to three rotational degrees of freedom and three translational degrees of freedom by attaching the alignment barrel and the alignment guide to the bone.

23. The resection guide of claim 22, wherein the first diameter is larger than the second diameter.

24. The resection guide of claim 22, further comprising a plurality of holes located on the first surfaces.

25. The resection guide of claim 24, wherein the axis of at least two of the holes on the first surfaces are angled with respect to each other.

26. The resection guide of claim 24, wherein the holes located on the first surfaces are spaced a fixed distance from each other.

27. The resection guide of claim 26, further comprising a plurality of holes located on the second surface.

28. The resection guide of claim 27, wherein the holes located on the second surface are spaced a fixed distance from each other.

29. The resection guide of claim 28, wherein, once the resection guide is attached to the bone, the resection plane can be moved in a proximal-distal direction or a medial-lateral direction or both the proximal-distal and medial-lateral directions in fixed increment without reattachment on the bone at a different location.

30. The resection guide of claim 28, further comprising:

a mounting means formed on the resection plane.

31. The resection guide of claim 30, wherein the mounting means is an opening.

32. A resection guide comprising:

an alignment barrel having a first diameter, a second diameter, and a central longitudinal axis extending through a length of the alignment barrel;

a first set of holes formed on the alignment barrel, the holes in the first set of holes being spaced at a fixed distance from each other;

an alignment guide rotatably and slidably mounted on the alignment barrel;

a second set of holes formed on the alignment guide, the holes in the second set of holes being spaced at a fixed distance from each other; and

a resection plane located at one end of the alignment guide, the resection plane being parallel to the central longitudinal axis and capable of guiding a tool for resecting an end of a bone, wherein, once the resection guide is attached to the bone, the resection plane can be moved in fixed increments in a distal-proximal direction or a medial-lateral direction or both the distal-proximal and the medial-lateral directions without reattachment at a different location.

33. The resection guide of claim 32, further comprising:

a first surface formed on the alignment barrel, the first surface having a first diameter; and

a second surface formed on the alignment barrel, the second surface having a second diameter, the second diameter being smaller than the first diameter.

34. The resection guide of claim 33, wherein the alignment guide is mounted on the second surface formed on the alignment barrel.

35. The resection guide of claim 32, wherein the axis of at least two holes from the first set of holes are angled with respect to each other.

36. The resection guide of claim 34, further comprising:

a mounting means formed on the resection plane.

37. The resection guide of claim 36, wherein the mounting means is an opening.

38. A bone resection system comprising:

an alignment barrel;

at least a first hole and a second hole formed on the alignment barrel;

an alignment guide rotatably and slidably mounted on the alignment barrel;

at least one hole formed on the alignment guide;

a resection plane located at one end of the alignment guide, the resection plane being capable of guiding a tool for resecting an end of a bone;

a first pin, the fist pin when driven through the first hole on the alignment barrel stopping the movement of the resection plane in the anterior-posterior -direction and stopping the rotation of the resection plane so that the internal-external rotation angle of the resection plane is fixed;

a second pin, the second pin when driven through the second hole stopping the rotation of the resection plane so as to fix the flexion-extension angle of the resection plane without fixing the Varus-Valgus angle of the resection plane; and

a third pin, the third pin when driven through the hole on the alignment guide stopping the movement of the resection plane in the distal-proximal direction and stopping the rotation of the resection plane so that the Varus-Valgus -angle of the resection plane is fixed.

39. The bone resection system of claim 38, further comprising:

a first surface formed on the alignment barrel, the first surface having a first diameter; and

a second surface formed on the alignment barrel, the second surface having a second diameter, the second diameter being smaller than the first diameter.

40. The bone resection system of claim 39, wherein the alignment guide is mounted on the second surface formed on the alignment barrel.

41. The bone resection system of claim 38, wherein the axis of the first hole and the second hole are angled with respect to each other.

42. The bone resection system of claim 38, further comprising:

a plurality of the first holes; and

a plurality of second holes;

wherein the set of first holes and the set of second holes formed a matched set of holes, and wherein each matched set of the first hole and the second hold is spaced a fixed distance from each other.

43. The bone resection system of claim 42, further comprising:

a plurality of the third holes formed on the alignment guide, the holes formed on the alignment guide being spaced a fixed distance from each other.

44. The bone resection system of claim 43, wherein, once the resection system is attached to the bone, the resection plane can be moved in fixed increment without attachment at a different location.

45. The bone resection system of claim 43, further comprising:

a mounting means formed on the resection plane.

46. The bone resection system of claim 45, wherein the mounting means is an opening.

47. A resection guide comprising:

an alignment barrel having a first outer surface, a second outer surface, and a connecting surface intermediate the first and second surfaces, the first and second surfaces having a first diameter and the connecting surface having a second diameter smaller than the first diameter, and the barrel having a central longitudinal axis extending through a length of the alignment barrel;

an alignment guide rotatably and slidably mounted on the second diameter portion of the alignment barrel; and

a resection plane parallel to the central longitudinal axis, the resection plane located at one end of the alignment guide, the resection plane being capable of guiding a tool for resecting an end of a bone.

48. The resection guide of claim 47, wherein the alignment guide is positioned on the second surface.