Patent ID: 7763053

Claim:
A device for correction of a spinal deformity, comprising: a. a cable having a first end portion, and an opposite, second end portion; b. a tension member having: (i). a cylindrical magnet; (ii). a leadscrew having a helically threaded exterior surface, an interior surface defining a bore for housing the cylindrical magnet rigidly, and an axis therethrough the bore; and (iii). a body having a first end portion and an opposite, second end portion defining a cylindrical chamber therebetween, a longitudinal axis therethrough the cylindrical chamber, and a U-shape cut formed in the second end portion, wherein the cylindrical chamber has a first chamber portion and a second chamber portion neighboring to the first chamber portion, the first chamber portion helically threaded for engaging with the leadscrew such that when the leadscrew is received in the cylindrical chamber, the axis of the leadscrew is substantially coincident with the longitudinal axis of the body and the leadscrew is capable of moving back and forth along the longitudinal axis as being rotated around the longitudinal axis; c. a shackle having a first end portion, a second end portion and a body portion defined therebetween, wherein the first end portion and the second end portion are configured for being secured to a pelvic bone, and the body portion is received in the U-shape cut of the body such that the tension member is capable of rotating around a first axis and a second axis perpendicular to the first axis, respectively; and d. a first engaging member mechanically engaging the first end portion of the cable with the tension member.