Patent ID: 8777861

Claim:
A three-dimensional ultrasound scanner without internal pulleys comprising: a transducer unit connected to a swing axis; a motor generating rotary power; and a swing mechanism configured to transmit the rotary power of the motor to the transducer unit to swing the transducer unit about the swing axis; wherein the swing mechanism comprises; an arm holder connected to a rotational axis of the motor; an arm connected to the arm holder, and configured to swing within a certain angular range about the rotational axis depending on rotation of the motor; a link attached to the arm for moving in unison with the arm; and a shaft connected to the link and the transducer unit, and configured to thrust the transducer unit sideways, depending on the swing movement of the arm delivered to the shaft via the link, to thereby swing the transducer unit about the swing axis; and wherein the link comprises: a first link member; and a second link member connected via a link coupler to the first link member.