Summary |
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. |