HIP JOINT ENDOPROSTHESIS Russian patent published in 2005 - IPC

FIELD: medical engineering.

SUBSTANCE: device has head, neck, trochanteric part, pedicle, axle, elastic members and casings having internal conic surfaces. The axle has variable cross-section with grooves on its surface arranged at an angle. The casings are mounted in tubular part of the pedicle uniformly along its length. The axle is mounted in the casings and longitudinally movable as a result of action of cylindrical portion of the trochanteric part. The elastic members are manufactured as hollow body of arc revolution having longitudinal slits. They have end flanges one of which is rigidly fixed on the axle and the other one is movable and has fingers movable along the grooves. The elastic members embrace the axle on the segments of greater diameter and are engageable with internal conic surfaces.

EFFECT: enhanced effectiveness of treatment; higher stability of prosthesis pedicle.

2 dwg