Patent ID: 9002434
Filing Date: 2015-04-07
Classification: A61B

Abstract:
1. A medical device position detecting system which includes a portion configured to be introduced into the body of a subject and guided by an external magnetic field, the system comprising: a resonance circuit that is mounted in a medical device and contains a magnetic induction coil having a magnetic material inside and wherein the magnetic induction coil generates an alternate magnetic field; an alternate magnetic field detector that is disposed at the outside of an operation region of the medical device and detects the alternate magnetic field generated by the magnetic induction coil; a position information, including a position, calculator for calculating position information of the medical device on a basis of the alternate magnetic field detected by the alternate magnetic field detector; a frequency setting unit including a storage configured to enable setting at least one of frequency of the alternate magnetic field detected by the alternate magnetic field detector and frequency of the alternate magnetic field generated by the magnetic induction coil on a basis of at least one of intensity and direction of the external magnetic field at the position of the magnetic induction coil, said frequency setting unit being physically separate from said resonance circuit.