Electrode apparatus for nerve denervation or modulation in vivo
An electrode apparatus for nerve denervation or modulation includes 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 part of nerves on a tube in a 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. The driving unit drives the joint units in conjunction with the wire to have different displacements.
1 . An electrode apparatus 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 part of nerves on a tube in a 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 control the joint units and the wire to increase a difference in displacement therebetween in order for the electrode guide to be in a wound state to enclose circumference of the tube in the body and control the joint units and the wire to decrease the difference in displacement therebetween in order for the electrode guide to be in a rectilinear state;
wherein the driving unit includes:
a rod block of which one end is connected to the joint units and which is configured to be moveable in forward and backward directions;
a wire block configured to support the wire and configured to be 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.
2 . The electrode apparatus of claim 1 ,
wherein the variable connection unit includes:
a rod link rotatably connected to the rod block;
a wire link rotatably connected to the wire block;
a hinge pin configured to rotatably connect the rod link and the wire link to each other; and
a pin slot formed to slidably accommodate the hinge pin.
3 . The electrode apparatus of claim 2 ,
wherein at least a portion of the hinge pin is exposed to the electrode apparatus through the pin slot.
4 . The electrode apparatus of claim 3 ,
wherein when the electrode guide is in the wound state, the hinge pin is removed and the electrode guide is deformed into the rectilinear state.
5 . The electrode apparatus of claim 2 ,
wherein the pin slot includes:
a block support that supports both side surfaces of the rod block and the wire block;
a path formation unit that is coupled to a portion of the block support to form a path along which the hinge pin slides; and
a fixing portion that couples a portion of the block support to the path formation unit.
6 . The electrode apparatus of claim 5 ,
wherein when the electrode guide is in the wound state, the fixing portion is removed and the electrode guide is deformed into the rectilinear state.
7 . The electrode apparatus of claim 1 ,
wherein the driving unit further includes:
a motor unit;
wherein the rod block includes a rod of which one end is connected to the joint units and which is moved in the forward and backward directions by the motor unit; and
the wire block is configured to move in the forward and backward directions in parallel to the rod block, and
when the rod block is moved in the forward direction, a distance between the rod block and the wire block increases, and when the rod block is moved in the backward direction, the distance between the rod block and the wire block decreases.
8 . The electrode apparatus of claim 1 ,
wherein the wire is protruded from one end of the shaft with a smaller displacement than the joint units and provides a force of pulling the joint units in a direction to be wound around the tube.
9 . The electrode apparatus 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.
10 . The electrode apparatus 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.