Spinal implant system and method

An extender comprising:

• an outer member defining a longitudinal axis and including a body comprising a lateral opening, the outer member further including a first extension extending from the body and defining a first axial cavity and a second extension extending from the body and defining a second axial cavity, each of the axial cavities including a first portion having a first dimension, a second portion having a second dimension and a third portion having a third dimension, the first dimension being greater than the second dimension and the second dimension being greater than the third dimension;
• and
• an inner member including a body including a first tab configured for disposal in the lateral opening, the inner member further including a first arm having a first outward projection disposed for movement within the first axial cavity and a second arm having a second outward projection disposed for movement within the second axial cavity,
• wherein the inner member is configured for axial translation relative to the outer member such that the projections are disposable between a first position such that the projections are disposed with the first portions of the respective axial cavity and the outer member is disposed in a non-expanded orientation, a second position such that the projections are disposed with the second portions of the respective axial cavity and the outer member is disposed is disposed in a first expanded orientation, and a third position such that the projections are disposed with the third portions of the respective axial cavity and the outer member is disposed in a second expanded orientation,
• wherein the lateral opening includes a locking cavity comprising a plurality of lock slots such that the tab is movable into the locking cavity to fix the inner member relative to the outer member in each of the positions.

A spinal implant system comprising:

• an extender comprising an outer sleeve extending between a proximal end and a distal end and defining a longitudinal axis and an inner sleeve extending between a proximal end and a distal end,
• the outer sleeve including a body defining a lateral opening, the lateral opening including a proximal lock slot, an intermediate lock slot and a distal lock slot disposed in series along the longitudinal axis, the outer sleeve further including a first wall extending from the body and having a first extension including a first cantilever and a second cantilever defining a first axial cavity therebetween and a second extension including a first cantilever and a second cantilever defining a second axial cavity therebetween, each of the axial cavities including a distal portion having a first dimension, an intermediate portion having a second dimension and a proximal portion having a third dimension, the first dimension being greater than the second dimension and the second dimension being greater than the third dimension, each of the cantilevers including a capture surface,
• the inner sleeve including a body defining a resilient tab such that the tab is rotatable relative to the inner member body, the inner sleeve further including a first arm having a first outward projection disposed for movement within the first axial cavity and a second arm having a second outward projection disposed for movement within the second axial cavity, the first arm includes a first flange that defines a first flange cavity configured for disposal of the first extension such that the first flange slidably engages the first extension during axial translation, the second arm includes a second flange that defines a second flange cavity configured for disposal of the second extension such that the second flange slidably engages the second extension during axial translation,
• a tubular actuator disposed about the outer sleeve and connected with the inner sleeve, the actuator defining a resilient button rotatable relative to the actuator;
• and
• a bone fastener including a proximal portion that defines an implant cavity and a distal portion configured to penetrate tissue,
• wherein the inner sleeve is configured for axial translation relative to the outer sleeve such that the outward projections are disposable between a first position such that the outward projections are disposed with the distal portions of the respective axial cavity and the outer sleeve is disposed in a locking orientation, a second position such that the outward projections are disposed with the intermediate portions of the respective axial cavity and the outer sleeve is disposed in a capture orientation, and a third position such that the outward projections are is disposed with the second portions of the respective axial cavity and the outer sleeve is disposed in an eject orientation,
• wherein the button engages the tab to rotate the tab relative to the inner sleeve body into the distal lock slot to fix the inner member relative to the outer member in the first position, the intermediate lock slot to fix the inner member relative to the outer member in the second position and the proximal lock slot to fix the inner member relative to the outer member in the third position.