Patent ID: 8177844

Claim:
An apparatus for inserting an intervertebral fusion cage, including: a dilatation set including; a first dilatation barrel formed with a circular internal cross-sectional configuration and an elliptic external cross-sectional configuration; and a second dilatation barrel provided around the first dilation barrel, and formed with an elliptic internal cross-sectional configuration and a circular external cross-sectional configuration; a guiding set including: a first guiding tube provided around the second dilatation barrel; and a second guiding tube provided around the first guiding tube, and formed with a radial guiding hole defined therein and a smooth face formed thereon in the guiding hole; an insert set including: a leading rod inserted in the second guiding tube; a push rod pivotally connected to the leading rod and movably inserted in the second guiding tube; a tubular hammer sleeve connected to the leading rod; a block ring inserted in the hammer sleeve; a spring compressed between the block ring and the leading rod; and a flexible element connected to the block ring; and an intervertebral fusion cage connected to the flexible element, inserted in the second guiding tube, pushed against the push rod, and formed with an arced face movable out of the second guiding tube via the guiding hole along the smooth face and adjustable to a predetermined angle.