Experimental study to control the insertion resistance of internal medical instrument using magnetic field oscillation

We present a new method to reduce the insertion resistance for internal medical instruments by means of vibration. A rotating permanent magnet generates an oscillated magnetic field and vibrates the internal medical instruments from outside of the body. We investigated the relation between the frequency of vibration and the insertion resistance with a pin on flat test system in vitro. As a result, vibration is effective to reduce the friction and it is possible to keep a smooth insertion by vibration.