COLLAPSIBLE AND EXPANDABLE DEVICE FOR VERTEBRAL PORTIONS AND METHOD OF USING SAME

摘要

The present invention provides a device (10) suitable for insertion between vertebral portions and having a first, collapsed, position and a second, extended, position, wherein the device comprises upper and lower supports (18, 20) and side supports (22, 24) pivotally connected thereto and in which one of said side supports includes a reaction surface (34) against which, in operation, an actuation member (36) acts so as to cause opening of said device. The device may be used as an implant or prosthesis or as a tool for compacting diseased bone material. The medical methods of using the device are also disclosed.