Patent ID: 6786903
Filing Date: 2004-09-07
Classification: A61B

Abstract:
A vertebral fixation device for fastening a fixation rod which is used to fix a spinal segment under treatment, said device comprising:a fixation seat provided with a receiving slot for receiving the fixation rod, said receiving slot having two opposite side walls, each of said side walls including a retaining recess; a fixation block provided at a top end with a rotary control end, a threaded through hole, and two retaining edges opposite to each other, wherein said fixation block is engaged with said fixation seat such that the fixation rod is pressed against by said fixation block, and the two retaining edges are retained in said retaining recesses of said fixation seat; a fastening bolt engaged with said threaded through hole of said fixation block such that one end of said fastening bolt presses against the fixation rod; said retaining recesses of said fixation seat are located in inner sides of the two side walls of said receiving slot; said retaining edges of said fixation block are located in outer edges of said fixation block; and said rotary control end of said fixation block is provided in a bottom edge with an inclined plane having a higher inner side and a lower outer side; said fixation seat is provided in a top edge of the side walls thereof with an inclined plane having a higher inner side and a lower outer side; said fixation seat is engaged with said fixation block such that said inclined planes of said fixation block and said fixation seat are in contact with each other.