Patent ID: 9636153
Date: 2017-05-02
CPC Classifications: A61B

Claim:
1. A medullary pin for a distraction with segment transport and subsequent lengthening of a tubular bone, wherein the medullary pin comprises: an at least partly hollow body extending in an axial direction of the medullary pin, a locking means for locking the body in a first end fragment of the tubular bone, a first inner part, which is arranged displaceably in the axial direction inside the body and comprises a first fixation means for the fixation of a middle fragment of the tubular bone, a second inner part, which is arranged displaceably in the axial direction inside the body and comprises a second fixation means for the fixation of a second end fragment of the tubular bone, and a drive unit for the axial displacement of the first inner part relative to the second inner part, wherein the drive unit comprises an electric motor with a gearing, and wherein the electric motor and the gearing of the drive unit are integrated in one of the first inner part and the second inner part and are arranged inside the body between the first fixation means of the first inner part and the second fixation means of the second inner part, wherein the electric motor and the gearing are displaceable in the axial direction together with the one of the first inner part and the second inner part in which they are integrated.