主权项 |
1. An apparatus for use in spinal interbody fusion, comprising:
an expandable spinal interbody fusion device including an inferior endplate having an outer surface configured to contact a vertebral body of the spine, a superior endplate having an outer surface configured to contact an opposing vertebral body of said spine, said inferior endplate and said superior endplate being movable relative to each other in a direction of expansion, and an elevator captively retained between said inferior endplate and said superior endplate for movement independently toward and away from each of said inferior endplate and said superior endplate; and an elongate inserter having a distal end and a proximal end, said distal end being releasably attached to said device, said inserter including an actuator at said proximal end, said inserter comprising a lifting platform movably coupled to said actuator to cooperatively engage said elevator for expanding said device upon operation of said actuator and a driver supported by said inserter and coupled to said actuator for translational movement along said inserter for inserting an insert into said device, wherein said movement of said lifting platform for expanding said device is effected in a first stroke of said actuator independently of movement of said driver, and said movement of said driver for inserting said insert into said device is effected in a second stroke of said actuator. |