Magnetic micromachines for medical applications

The spiral-type magnetic micromachine can swim in a liquid and in a gel. In addition, this machine has a function of heating, This machine is suitable for local heat treatment in the body. The active bending is obtained by attached tiny magnet at the tip of the guide-wire. This is simple and useful for inserting the catheter to the lung or to the blood tube. (C) 2002 Elsevier Science B.V. All rights reserved.