EXPANDABLE SPACING MEANS FOR INSERTION BETWEEN SPINOUS PROCESSES OF ADJACENT VERTEBRAE

摘要

A device for insertion into a space between adjacent processes of vertebrae comprising a flexible enclosure which can be placed in a collapsed form prior to insertion between adjacent processes of vertebrae and subsequently placed in an expanded form by inj ection of a settable resin under pressure, wherein surfaces of the device facing the adjacent processes of vertebrae are closer together in said collapsed form and further apart in said expanded form.