Instrument for inserting a spinal device
In one aspect, a bone anchor assembly is provided having a bone anchor with a head, a resilient locking cap extending about a portion of the bone anchor head, and a cap drive member having a depending annular wall. In another form, a bone plate system is provided including a bone plate having an elongated throughbore and a resilient support member received therein. In another aspect, an insertion device is provided for manipulating and inserting a spinal device at or within a spinal joint. The insertion device is configured to actively pivot the implant about the implant gripping end of the device and to allow manipulation and release of the implant in any pivoted orientation from approximately 0 to 90 degrees.
1. A tool for inserting an implant, comprising:
a handle;
a shaft assembly having a longitudinal axis and being operably connected to the handle;
a pivotable head portion for gripping the implant and being pivotally connected to a distal end portion of the shaft assembly;
a movable jaw member movably connected to the pivotable head portion for selectively gripping and releasing the implant;
a stationary jaw member fixedly connected to the pivotable head portion opposite from the movable jaw member for gripping the implant therebetween;
a first actuator operably connected to a proximal end portion of the shaft assembly operable to selectively pivot the head portion and the movable and stationary jaw members thereof to a plurality of different positions with respect to the shaft assembly; and
a second actuator operably connected to the proximal end portion of the shaft assembly operable to selectively shift the movable jaw member relative to the pivotable head portion towards and away from the stationary jaw member for selectively gripping and releasing the implant;
the shaft assembly and head portion being configured to allow the movable jaw member to be shifted independently of the pivotable head portion and the implant to be selectively released by the movable jaw member in each of the plurality of different positions of the pivotable head portion;
wherein the plurality of different positions of the pivotable head portion include an insertion configuration, wherein the head portion holds the implant in a first orientation relative to the shaft assembly, and a rotated configuration, wherein the head portion holds the implant in a second orientation relative to the shaft assembly different from the first orientation; and
wherein the pivotable head portion is biased to return to the insertion configuration when the pivotable head portion is shifted by the first actuator to the rotated configuration.
2. The tool of claim 1 , further comprising a biasing member associated with the shaft assembly operable to bias the movable jaw member toward a gripping orientation for gripping the implant in each of the plurality of different positions of the pivotable head portion.
3. The tool of claim 1 , wherein the shaft assembly is releasably connected to the handle portion to allow the shaft assembly to be removed from the handle for cleaning.
4. The tool of claim 1 , further comprising a latch member for releasably connecting the shaft assembly to the handle, wherein the latch member is shiftable between a closed orientation for keeping the shaft assembly locked to the handle, and a released orientation, for removing the shaft assembly from the handle.
5. The tool of claim 1 , wherein the shaft assembly comprises a first shaft operably connected to the first actuator and the head portion for shifting the head portion via the first actuator, and a second shaft operably connected to the second actuator and the movable jaw member for shifting the movable jaw member via the second actuator.
6. The tool of claim 1 , further comprising a biasing member associated with the shaft assembly operable to generate a biasing force to urge the pivotable head portion from the rotated configuration to the insertion configuration.
7. The tool of claim 6 , wherein the biasing member is a spring operably connected to the shaft assembly.
8. The tool of claim 1 , wherein the first actuator comprises a lever configured to shift between a plurality of different positions corresponding with the plurality of different positions of the pivotable head portion.
9. A tool for inserting an implant, comprising:
a handle;
a shaft assembly having a longitudinal axis and being operably connected to the handle;
a pivotable head portion for gripping the implant and being pivotally connected to a distal end portion of the shaft assembly;
a movable jaw member movably connected to the pivotable head portion for selectively gripping and releasing the implant;
a stationary jaw member fixedly connected to the pivotable head portion opposite from the movable jaw member for gripping the implant therebetween;
a first actuator operably connected to a proximal end portion of the shaft assembly operable to selectively pivot the head portion and the movable and stationary jaw members thereof to a plurality of different positions with respect to the shaft assembly; and
a second actuator operably connected to the proximal end portion of the shaft assembly operable to selectively shift the movable jaw member relative to the pivotable head portion towards and away from the stationary jaw member for selectively gripping and releasing the implant;
the shaft assembly and head portion being configured to allow the movable jaw member to be shifted independently of the pivotable head portion and the implant to be selectively released by the movable jaw member in each of the plurality of different positions of the pivotable head portion;
wherein the plurality of different positions of the pivotable head portion include an insertion configuration, wherein the head portion holds the implant in a first orientation relative to the shaft assembly, and a rotated configuration, wherein the head portion holds the implant in a second orientation relative to the shaft assembly different from the first orientation; and
wherein the movable jaw member is shiftable between a gripping orientation for gripping the implant and a releasing orientation for releasing the implant, and the movable jaw member is biased to return to the gripping orientation from the releasing orientation.
10. The tool of claim 1 , wherein the first actuator comprises a lever configured to shift between a plurality of different positions corresponding with the plurality of different positions of the pivotable head portion, and the tool further comprises a latch member for holding the lever in at least one of the plurality of different positions corresponding to the rotated configuration of the pivotable head portion.
11. The tool of claim 9 , further comprising a latch member configured to keep the pivotable head portion from returning to the insertion configuration when in the rotated configuration.
12. The tool of claim 11 , further comprising a biasing member associated with the shaft assembly operable to generate a biasing force to urge the pivotable head portion from the rotated configuration to the insertion configuration.
13. The tool of claim 11 , wherein the shaft assembly comprises a plurality of shafts including an outer shaft that extends about the other of the plurality of shafts.
14. The tool of claim 11 , wherein the pivotable head portion is biased to return to the insertion configuration when the pivotable head portion is shifted by the first actuator to the rotated configuration.
15. The tool of claim 11 , further comprising a latch member configured to keep the pivotable head portion from returning to the insertion configuration when in the rotated configuration.