Patent ID: 6723128
Filing Date: 2004-04-20
Classification: A61F

Abstract:
A prosthetic device for correcting deformity of the spine comprising:a prosthetic device main body for being inserted into an intervertebral disk, and having a variable height to correct deformity of the spine; and a control strip inserted into the prosthetic device main body, for controlling a height of the prosthetic device main body; a control strip insertion hole formed at a front side of the prosthetic device main body where the control strip is inserted having upper and lower surfaces which are movable apart for varying the height of the prosthetic device main body; an insertion hole formed at a rear side of the prosthetic device main body which faces opposite the control strip insertion hole surface; an elastic groove cut into lateral sides of the prosthetic device main body having a variable width along a longitudinal direction from the front side to the rear side of the prosthetic device main body and dividing the upper and lower surfaces of the control strip insertion hole; and the control strip being rotatable to different alignment positions in the control strip insertion hole of the prosthetic device main body for varying the height of the prosthetic device main body by rotation thereof, wherein the control strip is rotatable from an initial insertion position in the control strip insertion hole to a maximum height position spreading the groove to a maximum width to vary the height of the prosthetic device main body to a maximum height by a single rotation, and wherein the control strip is formed in a polyprism shape having a given length and is rotatable to a predetermined angle so that the height of the prosthetic device main body can be controlled according to the length of the control strip.