Electrode device for blocking or controlling nerves in body

1 . An electrode device for nerve denervation or modulation in vivo, comprising:

a main body including a shaft;

an electrode unit formed to be drawn out from one end of the shaft and configured to denervate or modulate at least some of nerves on a tube in the body;

an electrode guide including a plurality of joint units and a wire connecting the plurality of joint units to each other and configured to guide the electrode unit; and

a driving unit located inside the main body and configured to drive the joint units and the wire to protrude from the one end of the shaft,

wherein the driving unit includes:

a rod block of which one end is connected to the joint units and which is moveable in forward and backward directions;

a wire block configured to support the wire and which is moveable in the forward and backward directions; and

a variable connection unit configured to connect the rod block and the wire block to each other and vary a distance between the rod block and the wire block when the rod block and the wire block move in the forward and backward directions,

wherein a distance between the rod block and the wire block increases when the rod block moves in the forward direction and decreases when the rod block moves in the backward direction, and

wherein an increase in the distance between the rod block and the wire block causes the wire to be pulled so as to bend the plurality of joint units and provide a force for winding the plurality of joint units around the tube.

2 . The electrode device of claim 1 ,

wherein the driving unit further includes:

a motor unit, and

the rod block is moved in the forward and backward directions by means of the motor unit; and

the wire block moves in the forward and backward directions in parallel to the rod block.

3 . The electrode device of claim 2 ,

wherein the driving unit further includes a rotation shaft which is rotatable by means of the motor unit and has a thread on its outer circumferential surface, and

the rod block is engaged with the rotation shaft and moves in the forward and backward directions when the rotation shaft is rotated.

4 . The electrode device of claim 1 ,

wherein the driving unit further includes:

a frame which provides a movement path for the rod block and the wire block, and

the variable connection unit includes a rod gear provided at the rod block, a wire gear provided at the wire block, a rod link connected to the rod gear and a rod cam connected to the rod link, and

the rod cam is movable along with a cam guide provided at the frame.

5 . The electrode device of claim 4 ,

wherein the rod gear is configured as a pinion gear, the wire gear is configured as a rack gear engaged with the rod gear, and rotational movement of the rod gear occurring when the rod block moves in the forward and backward directions is transferred to rectilinear movement of the wire gear.

6 . The electrode device of claim 1 ,

wherein the wire is protruded from one end of the shaft with a smaller displacement than the joint units.

7 . The electrode device of claim 1 ,

wherein each joint unit includes:

a hinge unit formed on one or both sides of the joint unit in a longitudinal direction to be connected to an adjacent joint unit; and

a wire hole formed to allow insertion of the wire at a location spaced apart from a rotation center of the hinge unit.

8 . The electrode device of claim 1 ,

wherein each joint unit includes:

a hinge unit formed on one or both sides of the joint unit in a longitudinal direction to be connected to an adjacent joint unit; and

a winding support unit formed on one or both sides of the joint unit in the longitudinal direction to support the adjacent joint unit, and

since adjacent joint units are supported by means of the winding support unit, a force of supporting the joint units is provided to the joint units in an opposite direction to a direction to be wound around the tube.

9 . The electrode device of claim 1 ,

wherein the electrode guide further includes a tip joint connected to the end of the plurality of joint units connected sequentially to each other and coupled to ends of the electrode unit and the wire, respectively.

10 . The electrode device of claim 1 ,

wherein the plurality of joint units is made of an elastically deformable material and formed as one body, and

a winding support groove of which at least a part of a space is deformed to be closed by a force of the wire is formed between adjacent joint units of the electrode guide.