Catheter handle and catheter including same

A combination of a catheter handle and a catheter tube to control a catheter tube having a wire and a conductive wire therein, the catheter handle comprising:

• a handle body connected to a proximal side of the catheter tube, the handle body having a partition disposed in the handle body;
• and
• a rotary member that is disposed in the handle body so that the rotary member is free to rotate with respect to the handle body, and that is to be connected to a proximal side of the wire, wherein
• the rotary member has a rotation axis that is orthogonal to both a distal-proximal direction extending from a distal side to a proximal side of the handle body and a width direction of the handle, an operating part for rotating the rotary member from outside of the handle body,
• the handle body has an opening in a side wall, and the rotary member is disposed in the handle body so that the operating part of the rotary member penetrates to the outside of the handle body through the opening of the side wall,
• the partition is disposed in the handle body, so that the handle body, in a planar view from a rotation axis direction of the rotary member, has a first space for accommodating the rotary member rotatable on the rotation axis, the first space having the opening in the side wall and being defined by a surface of the partition facing to the opening, and a second space for placing the conductive wire, and the second space continuously extending, around the first space, from the distal side to the proximal side of the handle body inside the handle body, the second space being defined by an inner wall of the handle body and the other surface of the partition opposite to the surface of the partition facing to the opening, the first space and the second space being separated by the partition, and
• the rotary member is disposed in the first space of the handle body so that i) the rotary member is regulated to be rotatable around the rotation axis within the first space, ii) a length L1 that is from the center of the rotation axis to an outer edge of the rotary member on a side facing to the opening in the width direction is longer than a length L2 that is from the center of the rotation axis to an outer edge of the rotary member on the other side in the width direction facing to the surface of the partition defining the first space, on an imaginary line that includes a center of the rotation axis and extends in the width direction, and iii) the operating part of the rotary member is rotatable together with the rotary member and with respect to the rotation axis within the opening.