Surgical tool for adjusting a spinal implant

A surgical tool, comprising:

• a handle section;
• a knob rotatably coupled to the handle section for rotation relative thereto and disposed proximally relative thereto;
• the knob selectively moveable distally toward the handle section and proximally away from the handle section;
• an inner drive shaft rotationally fixed relative to the knob for rotation therewith relative to the handle section;
• the drive shaft having a non-round drive recess at a distal end thereof;
• the drive shaft extending distally relative to the handle section;
• a coupling shaft rotatably supported by the handle section and selectively coupled to the knob for rotation therewith relative to the handle section;
• the coupling shaft disposed about the drive shaft and having an externally threaded distal section;
• an outer shaft extending distally from the handle section;
• the outer shaft supported by the handle section and fixed relative to the handle section;
• the outer shaft disposed about the coupling shaft and the drive shaft;
• the outer shaft having at least two distally extending alignment flanges on a distal end thereof;
• a configuration lock mounted to the housing section and moveable between a locked position and an unlocked position;
• the configuration lock selectively engagable with the knob to control movement of the tool between a first configuration and a second configuration;
• wherein when the tool is in the first configuration:
• the drive recess, the threaded section, and the alignment flanges longitudinally overlap;
• the knob is rotationally decoupled from coupling shaft;
• wherein when the tool is in the second configuration:
• the drive shaft is retracted such that the drive recess is closer to the handle section than in the first configuration;
• the knob is rotationally coupled to the coupling shaft for rotation therewith relative to the handle;
• the knob is displaced more proximally relative to the handle section than in the first configuration;
• a biasing element biasing the knob proximally relative to the handle section.