Operation control system of capsule type endoscope, and capsule type endoscope system comprising same
The present invention relates to an operation control system for spirally operating a capsule endoscope along a tubular organ, and a capsule type endoscope system comprising the same. The operation control system for a capsule endoscope of the present invention comprises: a magnetic field generation portion ( 100 ) comprising a first coil unit ( 110 ) provided on three orthogonal axes to generate a magnetic field and a second coil unit ( 120 ) comprising one coil structure for generating a magnetic field gradient; and a mechanical coil driving portion ( 130 ) for three-dimensionally rotating the second coil unit ( 120 ), thereby generating a rotating magnetic field and the magnetic field gradient. Therefore, it is possible to simplify the operation control system for a capsule endoscope by forming the rotating magnetic field and the magnetic field gradient for a spiral motion of a capsule endoscope only with a minimum coil system.
1. An operation control system of a capsule type endoscope comprising:
a first coil unit including
a first coil pair fixed toward an x-axis direction,
a second coil pair fixed toward a y-axis direction, and
a third coil pair fixed toward a z-axis direction,
wherein the x-axis, the y-axis and the z-axis are perpendicular to each other and said first, second and third coil pairs generate magnetic fields in corresponding axis directions, respectively;
a second coil unit including
a fourth coil pair opposingly arranged on opposite sides of the first coil unit to surround the first coil unit;
a coil driving unit including
a rotating arm configured to rotate on a central axis thereof, and
a movable arm configured to move on the rotating arm and supporting the second coil unit,
wherein the second coil unit is configure to rotate in certain two directions by the rotating arm and the movable arm, thereby generating a gradient magnetic field in any direction relative to the magnetic fields generated by the first coil unit; and
a control unit including
an image receiver which receives an image signal transmitted from a capsule endoscope, and
a coil controller which controls electric currents supplied to the first and second coil unit and controls operation of the coil driving unit,
wherein the capsule endoscope carries out precession by the magnetic fields generated by the first coil unit and a spiral motion along a tubular organ by the gradient magnetic field generated by the second coil unit.
2. The operation control system according to claim 1 , wherein the coil driving unit controls the second coil unit to perform three-dimensional rotation by two axis rotating or moving independently from each other.
3. The operation control system according to claim 1 , wherein each of the coil pairs of the first coil unit includes a Helmholtz coil.
4. The operation control system according to claim 1 , wherein the second coil unit includes a Maxwell coil.
5. A capsule type endoscope system comprising the operation control system according to claim 1 , wherein the capsule endoscope has magnetization inclined within a range of an acute angle (0<δ<90°) relative to the length direction of a housing of the capsule endoscope and includes a camera module to capture an image and transmit the image to the outside.
6. A capsule type endoscope system comprising the operation control system according to claim 2 , wherein the capsule endoscope has magnetization inclined within a range of an acute angle (0<δ<90°) relative to the length direction of a housing of the capsule endoscope and includes a camera module to capture an image and transmit the image to the outside.
7. A capsule type endoscope system comprising the operation control system according to claim 3 , wherein the capsule endoscope has magnetization inclined within a range of an acute angle (0<δ<90°) relative to the length direction of a housing of the capsule endoscope and includes a camera module to capture an image and transmit the image to the outside.
8. A capsule type endoscope system comprising the operation control system according to claim 4 , wherein the capsule endoscope has magnetization inclined within a range of an acute angle (0<δ<90°) relative to the length direction of a housing of the capsule endoscope and includes a camera module to capture an image and transmit the image to the outside.