Resection shift guide and method

Patent metadata

Field	Value
Publication number	US-10070868-B2
Application number	US-201414447714-A
Country	US
Kind code	B2
Filing date	Jul 31, 2014
Priority date	Aug 2, 2013
Publication date	Sep 11, 2018
Grant date	Sep 11, 2018

Abstract

Resection shift guides and methods providing anterior, posterior, clockwise, or counterclockwise adjustment of a 4-in-1 cut guide along a planar resected surface of a femur are disclosed. A resection shift guide can include a base member and a block member. The base member can include first and second arms. The block member can include a first end, rotatably coupled with the first arm, a second end, rotatably coupled with the second arm, and at least three surfaces extending between the first and second ends. Each of the at least three surfaces can include two or more drill holes arranged differently than drill holes of the other surfaces. A method can include removing a 4-in-1 cut guide from two original femoral lumens, drilling two adjusted femoral lumens using a resection shift guide, removing the resection shift guides, and attaching the 4-in-1 cut guide to the two adjusted femoral lumens.

First claim

What is claimed is:

1. A resection shift guide, comprising:
a base member including first and second arms; and
a block member including a first end, rotatably coupled with the first arm, a second end, rotatably coupled with the second arm, and at least three surfaces extending between the first and second ends,
each of the at least three surfaces including two or more drill holes arranged differently than drill holes of the other surfaces,
the block member being rotatable about a longitudinal axis extending between the first and second arms of the base member while the first and second ends of the block member remain coupled to the respective first and second arms of the base member.

2. The resection shift guide of claim 1 , further comprising first and second femoral posts longitudinally extending from the base member in a direction opposite the first and second arms.

3. The resection shift guide of claim 2 , further comprising a first axis pin, rotatably coupling the first end of the block member and the first arm of the base member, and a second axis pin, rotatably coupling the second end of the block member and the second arm of the base member.

4. The resection shift guide of claim 3 , further comprising a detent mechanism to rotationally lock a position of the block member relative to the base member.

5. The resection shift guide of claim 4 , further comprising an actuating member that, when triggered, disables the detent mechanism and allows the block member to rotate relative to the base member.

6. The resection shift guide of claim 5 , wherein the actuating member includes a button and one or more resilient members biasing the button to an untriggered position.

7. The resection shift guide of claim 4 , wherein the detent mechanism includes one or more ball detents.

8. The resection shift guide of claim 1 , wherein the block member includes four surfaces extending between its first and second ends.

9. The resection shift guide of claim 8 , wherein a first surface includes two or more drill holes arranged to provide an anterior shift, on a planar resected femur, to a subsequently installed 4-in-1 cut guide.

10. The resection shift guide of claim 8 , wherein a second surface includes two or more drill holes arranged to provide a posterior shift, on a planar resected femur, to a subsequently installed 4-in-1 cut guide.

11. The resection shift guide of claim 8 , wherein a third surface includes two or more drill holes arranged to provide a clockwise rotational shift, on a planar resected femur, to a subsequently installed 4-in-1 cut guide.

12. The resection shift guide of claim 8 , wherein a fourth surface includes two or more drill holes arranged to provide a counterclockwise rotational shift, on a planar resected femur, to a subsequently installed 4-in-1 cut guide.

13. The resection shift guide of claim 1 , wherein the two or more drill holes are spaced approximately 40 millimeters apart.

14. A resection shift guide, comprising:
a base member including first and second arms;
first and second femoral posts longitudinally extending from the base member in a direction opposite the first and second arms; and
a block member including a first end, rotatably coupled with the first arm, a second end, rotatably coupled with the second arm, and at least three surfaces extending between the first and second ends,
each of the at least three surfaces including two or more drill holes arranged differently than drill holes of the other surfaces.

15. A resection shift guide, comprising:
a base member including first and second arms;
a block member including a first end, rotatably coupled with the first arm, a second end, rotatably coupled with the second arm, and at least three surfaces extending between the first and second ends, each of the at least three surfaces including two or more drill holes arranged differently than drill holes of the other surfaces;
a first axis pin, rotatably coupling the first end of the block member and the first arm of the base member; and
a second axis pin, rotatably coupling the second end of the block member and the second arm of the base member.

16. The resection shift guide of claim 15 , further comprising a detent mechanism to rotationally lock a position of the block member relative to the base member.

17. The resection shift guide of claim 15 , wherein one of the surfaces includes two or more drill holes arranged to provide an anterior shift, on a planar resected femur, to a subsequently installed 4-in-1 cut guide.

18. The resection shift guide of claim 15 , wherein one of the surfaces includes two or more drill holes arranged to provide a posterior shift, on a planar resected femur, to a subsequently installed 4-in-1 cut guide.

19. The resection shift guide of claim 15 , wherein one of the surfaces includes two or more drill holes arranged to provide a clockwise rotational shift, on a planar resected femur, to a subsequently installed 4-in-1 cut guide.

20. The resection shift guide of claim 15 , wherein one of the surfaces includes two or more drill holes arranged to provide a counterclockwise rotational shift, on a planar resected femur, to a subsequently installed 4-in-1 cut guide.

Assignees

• Zimmer Inc

Inventors

• Kumar Harish
• Toler Jason S
• Boone Michael

Classifications

• A61B17/155 Primary

  Cutting femur · CPC title