| 摘要 |
<p>The present invention relates to an adjustable spacing device for insertion between vertebrae in spinal surgical operations to adjust the distance between two vertebrae where a fibrocartilage disc is located, wherein the device (1) comprises two mutually superposed elongated plates (2, 3), wherein the plates are provided centrally with a pivot which functions to prevent movement of the plates (2, 3) in the direction of their longitudinal axis but permits the plates (2, 3) to move angularly in relation to one another and at least one of the plates to move perpendicularly to the common plane of the plates (2, 3), wherein the distances at which the plates (2, 3) are spaced apart can be adjusted at each end, individually, with the aid of an adjuster means (7) having two spacing members (12, 14) disposed in a longitudinally extending cavity (6) defined by milled grooves (4, 5) which extend along that side of each plate which faces towards the other plate, and wherein the milled grooves (4, 5) correspond to one another so that together they can receive the adjusting means. The invention also relates to a method for adjusting the distance between two vertebrae with the aid of the spacing device in spinal surgical operations.</p> |
