Adjustable bone plates

• US 7,704,251 B2
• Filed: 08/14/2006
• Issued: 04/27/2010
• Est. Priority Date: 11/19/2002
• Status: Active Grant

• Current Assignee: Acumed Llc (Berkshire Hathaway Incorporated)
• Original Assignee: Acumed Llc (Berkshire Hathaway Incorporated)
• Inventors: Horst, Steven P., Huebner, Randall J.
• Primary Examiner(s): RAMANA, ANURADHA
• Application Number:
  US11/504,223
• Publication Number:
  US 20070276405A1
• Time in Patent Office: 1,352 Days
• Field of Search: 606/70, 606/71, 606/280, 606/281, 606/286
• US Class Current: 606/71
• CPC Class Codes: A61B 17/1728 for holes for bone plates or plate screws
• CPC Class Codes: A61B 17/1735 for rasps or chisels
• CPC Class Codes: A61B 17/1782 for the hand or wrist
• CPC Class Codes: A61B 17/80 Cortical plates , i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
• CPC Class Codes: A61B 17/8004 with means for distracting or compressing the bone or bones
• CPC Class Codes: A61B 17/8033 having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges or head covers
• CPC Class Codes: A61B 17/8052 immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded
• CPC Class Codes: A61B 17/8061 specially adapted for particular bones A61B17/70 and A61B17/74 take precedence
• CPC Class Codes: A61B 17/808 Instruments for holding or positioning bone plates, or for adjusting screw-to-plate locking mechanisms
• CPC Class Codes: A61B 17/8085 with pliable or malleable elements or having a mesh-like structure, e.g. small strips A61B17/8071, A61B17/8076 take precedence
• CPC Class Codes: A61B 2090/061 for measuring dimensions, e.g. length
• CPC Class Codes: A61B 2090/067 for measuring angles

Abstract

Bone plates having an adjustable joint, and methods of using the bone plates to fix bones.

Claims

1. A method of bone fixation, comprising:

selecting a bone plate including first and second plate members, each plate member being monolithically formed, the plate members being structured to be placed under skin and the first and second plate members overlapping each other at a pivotable joint;

securing the bone plate to at least one bone using fasteners received in openings defined by the first and second plate members;

adjusting a relative angular disposition of the first and second plate members by relative pivotal movement of the first and second plate members about at least two nonparallel axes defined by the pivotable joint; and

fixing the relative angular disposition of the first and second plate members after the step of adjusting such that there is no change in the angular disposition of the first and second plate members relative to one other.

2. The method of claim 1, wherein the step of securing includes a step of attaching the bone plate to a distal portion of a radius bone.

3. The method of claim 1, wherein the step of securing includes a step of placing bone screws into the at least one bone from one or more openings defined by each of the first and second plate members.

4. The method of claim 1, wherein the step of adjusting includes a step of moving a handle member that is connected to the first plate member, the method further comprising a step of disconnecting the handle member after the step of moving.

5. The method of claim 1, wherein the step of fixing includes a step of turning a threaded fastener disposed in threaded engagement with a plate member adjacent the pivotable joint.

6. The method of claim 1, wherein the step of securing includes a step of securing the bone plate to a bone having a discontinuity such that the first and second plate members collectively span the discontinuity.

7. The method of claim 1, further comprising a step of observing a plurality of reference marks disposed on at least one of the first and second plate members and configured to indicate a plurality of predefined relative angular adjustments of the first and second plate members.

8. The method of claim 1, wherein the step of adjusting is performed after the step of securing.

9. The method of claim 1, wherein the step of selecting includes a step of selecting a bone plate with first and second plate members that include respective concave and convex surfaces, and wherein the concave and convex surfaces are apposed to each other in the pivotable joint.

10. The method of claim 9, wherein the step of fixing includes a step of urging the concave and convex surfaces against each other.

11. The method of claim 10, wherein the step of urging includes a step of turning a threaded fastener to increase engagement between the concave and convex surfaces.

12. A device for bone fixation, comprising:

a bone plate including first and second plate members, each plate member being monolithically formed, the plate members being structured to be placed under skin and the first and second plate members overlapping each other at a pivotable joint, each plate member defining at least one opening configured to receive a fastener that secures the plate member to bone, the pivotable joint having an adjustable configuration in which a relative angular disposition of the first and second plate members is adjustable by relative pivotal movement of the first and second plate members about two or more nonparallel axes defined by the pivotable joint and also having a fixed configuration in which the relative angular disposition is fixed such that there is no change in the angular disposition of the first and second plate members relative to one other.

13. The device of claim 12, wherein the bone plate is configured to be used on a distal portion of a radius bone.

14. The device of claim 12, further comprising a handle member configured to be connected to at least one of the plate members.

15. The device of claim 12, wherein the pivotable joint includes a threaded fastener disposed in threaded engagement with a plate member.

16. The device of claim 12, wherein at least one of the plate members includes plurality of reference marks configured to indicate a plurality of predefined relative angular adjustments of the first and second plate members.

17. The device of claim 12, wherein the first and second plate members include respective concave and convex surfaces that are apposed to each other in the pivotable joint.

18. The device of claim 17, wherein the concave and convex surfaces are configured to engage one another in the fixed configuration.