Orthopedic systems

• US 7,717,945 B2
• Filed: 12/11/2006
• Issued: 05/18/2010
• Est. Priority Date: 07/22/2002
• Status: Expired due to Fees

• Current Assignee: Acumed Llc (Berkshire Hathaway Incorporated)
• Original Assignee: Acumed Llc (Berkshire Hathaway Incorporated)
• Inventors: Huebner, Randall J., Jensen, David G.
• Primary Examiner(s): Robert; Eduardo C
• Assistant Examiner(s): SCHNEIDER, LYNNSY M
• Application Number:
  US11/637,626
• Publication Number:
  US 20070162018A1
• Time in Patent Office: 1,254 Days
• Field of Search: 606280-299, 606/319, 606/86.B, 606/915
• US Class Current: 606/284
• CPC Class Codes: A61B 17/1655 for tapping
• CPC Class Codes: A61B 17/1728 for holes for bone plates or plate screws
• CPC Class Codes: A61B 17/8057 the interlocking form comprising a thread
• CPC Class Codes: A61B 17/8863 Apparatus for shaping or cutting osteosynthesis equipment by medical personnel

Abstract

Orthopedic systems, including apparatus, methods, and kits. In some embodiments, these systems may be used for selectively tapping apertures of bone plates, to form threaded apertures during installation of the bone plates (i.e., intraoperatively).

Claims

1. A method of tapping a bone plate intraoperatively, comprising:

cutting an internal thread in an aperture of a bone plate using a tap device while the bone plate is connected to a bone, the tap device including an external thread and one or more flutes that interrupt the external thread to form one or more cutting edges that cut the internal thread; and

placing a fastener in threaded engagement with the internal thread of the aperture and into the bone after the step of cutting and with the tap device removed from the aperture.

2. The method of claim 1, wherein the tap device includes a tap portion and a shaft portion extending proximally from the tap portion, wherein the tap portion includes the external thread and the one or more flutes, wherein the step of cutting includes a step of engaging the bone plate with the tap portion to create the internal thread, and wherein most or all of the shaft portion remains outward of the bone plate during the step of engaging.

3. The method of claim 1, wherein the step of cutting includes a step of turning the tap device by hand.

4. The method of claim 1, further comprising a step of securing the bone plate to the bone with at least one bone screw before the step of cutting.

5. The method of claim 1, wherein the tap device includes a tap portion including the external thread and the one or more flutes, wherein the tap device also includes a tip portion extending distally from the tap portion, further comprising (1) a step of forming a hole in the bone, in alignment with the aperture, and (2) a step of placing the tip portion into the hole in the bone such that the tap portion is guided to the aperture.

6. The method of claim 5, wherein the tip portion has an average diameter and the aperture has a diameter, and wherein the average diameter of the tip portion is substantially less than the diameter of the aperture, thereby permitting the tip portion to be received in the aperture over a range of angles.

7. The method of claim 5, further comprising a step of selecting a tap device in which the tip portion is devoid of thread structure along at least most of its length.

8. The method of claim 1, wherein the step of cutting includes a step of creating a thread in the bone.

9. The method of claim 1, further comprising a step of selecting an angle for the step of cutting using a guide device that extends from the bone plate to a generally opposing side of the bone.

10. The method of claim 9, wherein the step of selecting an angle includes a step of placing the guide device such that the guide device extends partway around the bone from the bone plate to engage the bone at a position generally opposing the bone plate across the bone.

11. The method of claim 9, wherein the step of selecting an angle includes a step of forming a hole in the bone guided by the guide device.

12. The method of claim 1, further comprising (1) a step of advancing the tap device along a hole in the bone, and (2) a step of widening the hole at a position adjacent the aperture, at least partially during the step of cutting, to form a counterbore in the bone.

13. The method of claim 1, wherein the step of cutting is performed on a metal bone plate.