Bone fixation system with opposed mounting portions
System, including methods, apparatus, and kits, for bone fixation using a fixation device including a mounting portion and a fastener that attaches to the mounting portion. In some embodiments, the fixation device may include first and second mounting portions configured to be disposed across a bone from each other and secured with a fastener that extends from one of the mounting portions, through the bone, and to the other mounting portion. The system also may include a tool to facilitate installation of the fixation device.
1. An instrument for installing a bone fixation device, the instrument comprising:
a frame member formed to include a distal jaw and a drill stop including a notch, wherein the distal jaw and the drill stop extend from a body portion of the frame member in a same direction, wherein the drill stop is not part of the distal jaw;
a carriage formed to include a proximal jaw, the carriage slidably coupled to the frame member so as to form a receiver region between the distal jaw and the proximal jaw; and
a drive screw engaged with the frame member and/or the carriage such that rotation of the drive screw causes relative movement between the frame member and the carriage, wherein relative movement between the carriage and the frame member adjusts a distance between the distal jaw and the proximal jaw.
2. The instrument of claim 1 , wherein the distal jaw is at a distal end of the frame member and the drill stop is at a proximal end of the frame member.
3. The instrument of claim 1 , wherein a distance between the distal jaw and the drill stop is fixed.
4. The instrument of claim 1 , wherein the notch of the drill stop is curved.
5. The instrument of claim 4 , wherein an axis through a center of curvature of the notch is parallel to an axis about which the drive screw rotates.
6. The instrument of claim 4 , wherein an axis through a center of curvature of the notch extends through an opening of the carriage.
7. The instrument of claim 1 , wherein the drill stop is a first drill stop, and wherein the frame member is formed to include a second drill stop.
8. The instrument of claim 1 , further comprising a gauge configured to display an indication corresponding to a distance between the proximal and distal jaws.
9. The instrument of claim 8 , wherein the frame member includes the gauge.
10. The instrument of claim 1 , wherein the distal jaw includes one or more projections extending into the receiver region.
11. The instrument of claim 1 , wherein the proximal jaw includes one or more projections extending into the receiver region.
12. The instrument of claim 1 , wherein each the distal jaw and the proximal jaw includes one or more projections extending into the receiver region.
13. An instrument for installing a bone fixation device, the instrument comprising:
a frame member formed to include a distal jaw;
a carriage formed to include a proximal jaw, the carriage slidably coupled to the frame member so as to form a receiver region between the distal jaw and the proximal jaw, wherein the frame member has a greater length than the carriage, and wherein each the distal jaw and the proximal jaw includes one or more projections extending into the receiver region;
a drive screw engaged with the frame member and/or the carriage such that rotation of the drive screw causes relative movement between the frame member and the carriage along an axis, the axis parallel to a longitudinal axis of a body portion of the frame member, wherein relative movement between the carriage and the frame member adjusts a distance between the distal jaw and the proximal jaw along the axis; and
a gauge configured to display an indication corresponding to the distance between the proximal and distal jaws.
14. The instrument of claim 13 , wherein rotation of the drive screw causes the carriage to move relative to the frame member.
15. The instrument of claim 13 , further comprising a rotatable locking member coupled to the carriage, the locking member including a threaded portion that extends into the receiver region.
16. The instrument of claim 15 , wherein the locking member is coupled to the carriage such that the locking member may translate along an axis about which the locking member rotates.
17. An instrument for installing a bone fixation device, the instrument comprising:
a frame member formed to include a distal jaw and a drill stop including a notch, wherein the distal jaw and the drill stop extend from a body portion of the frame member in a same direction, the distal jaw is at a distal end of the frame member and the drill stop is at a proximal end of the frame member;
a carriage formed to include a proximal jaw, the carriage slidably coupled to the frame member so as to form a receiver region between the distal jaw and the proximal jaw; and
a drive screw engaged with the frame member and/or the carriage such that rotation of the drive screw causes relative movement between the frame member and the carriage, wherein relative movement between the carriage and the frame member adjusts a distance between the distal jaw and the proximal jaw.
18. The instrument of claim 17 , wherein a distance between the distal jaw and the drill stop is fixed.
19. The instrument of claim 17 , further comprising a gauge configured to display an indication corresponding to a distance between the proximal and distal jaws.
20. The instrument of claim 19 , wherein the frame member includes the gauge.