This bone expander is applied for reconstructed treatment in the elderly patients with vertebral collapsed fracture due to osteoporosis. The bilateral heads of the telescopic shafts in the expander can push the upper and lower expanded plates for increasing height of the collapsed vertebra through eccentric motion after the bone expander is inserted into the collapsed body. A proper reconstruction of the height in the vertebral collapse is done in order to achieve the reconstructed purpose of the treatment for the vertebral collapsed fracture.

This patent, the bone expander is consisted of two expander plates and telescopic shafts, is mainly applied in the elderly patients with vertebral fracture due to osteoporosis. The bone expander is implanted into the collapsed vertebral body through the inserted surgery of a surgeon, selecting the proper position for the bone expander, and then the two telescopic shaft components of the bone expander can be extended in length by eccentric movement. The bilateral heads of the telescopic shafts can push the upper and lower expanded plates for increasing height of the collapsed vertebra to achieve an effective reconstruction treatment in the vertebral collapsed fracture. Not only this bone expander can offer a proper reconstruction height according to patient consideration in the collapsed vertebra, but also can provide an effective bone cement perfusion space for sufficient perfusion and complete solidification in the cement, moreover, can reduce the risk of bone cement leakage. On the whole, the invention of this bone expander can effectively reconstruct and treat the bone rupture disease caused by vertebral collapsed fracture. Moreover, this invention of the bone expander is not restricted only in the vertebral structures of spinal bones, it can be utilized for the purpose of bone supporting or collapsed reconstruction in whole skeletal structures.

該專利發明不僅只是應用於椎體塌陷骨折，對於人體各部位骨頭骨折的支撐與強化，也可一併進行手術重建應用，可以選擇不同尺寸的撐開器進行骨撐開或是骨結構強化使用，此骨撐開裝置可以應用於不同性別與不同年齡層的患者，具有技術多功能的適用性。