Catheter handle and catheter with the same

A catheter handle for operating a tube of a catheter, comprising:

• a handle body;
• a rotary body, at least a part of which is disposed inside the handle body, having an inner cavity extending in an axial direction, provided to be rotatable around the axial direction relative to the handle body, and having a first guiding part extending in the axial direction on an inner surface of the inner cavity;
• a shaft disposed in the inner cavity of the rotary body, extending in the axial direction, fixed to the handle body, having a first portion and a second portion positioned proximal to the first portion with respect to the axial direction, having a first engagement part extending spirally on an outer surface of the first portion and a second engagement part extending spirally in an opposite direction to the first engagement part on an outer surface of the second portion, and having a second guiding part extending in the axial direction on outer surfaces of the first portion and the second portion;
• a first slider disposed on an outside of the shaft, having a third engagement part on an inner surface of the first slider, which engages with the first engagement part of the shaft, and having a fourth engagement part on an outer surface of the first slider, which engages with the first guiding part of the rotary body;
• a second slider disposed on the outside of the shaft, having a fifth engagement part on an inner surface of the second slider, which engages with the second engagement part of the shaft, and having a sixth engagement part on an outer surface of the second slider, which engages with the first guiding part of the rotary body;
• a first bushing disposed on the outside of the shaft, connected to a distal side of the first slider so as to be rotatable around the axial direction relative to the first slider, and having a seventh engagement part which engages with the second guiding part of the shaft;
• a second bushing disposed on the outside of the shaft, connected to a distal side of the second slider so as to be rotatable around the axial direction relative to the second slider, and having an eighth engagement part which engages with the second guiding part of the shaft;
• a first wire having a distal portion placed in a lumen of the tube and a proximal portion fixed to or engaged with the first bushing;
• and
• a second wire having a distal portion placed in a lumen of the tube and a proximal portion fixed to or engaged with the second bushing.