FRONT END POSITION DETECTOR FOR ENDOSCOPE

摘要

PROBLEM TO BE SOLVED: To provide the subject device which makes it possible to obtain the position information of the front end of an endoscope within the coelom when applied to an existing endoscope. SOLUTION: This front end position detector is provided with a position sensor at the front end of a position sensor probe insertable and removable into and from the channel of the endoscope from an aperture on an extracorporeal operation part. The position sensor is so held that the relative rotation of the front end of the position sensor probe within the passage on the internal insertion part side does not occur. The device is provided with a magnetic field generator which is extracorporeally installed by making a pair with the position sensor and generates the magnetic field intrinsic to the position and a position sensor controller which outputs the position information of the sensor in the magnetic field intrinsic to the position created by the magnetic field generator from the output of the position sensor.