Cautery puncture needle

A cautery puncture needle comprising:

• a pipe portion;
• and
• a distal end electrode portion provided at a distal end of the pipe portion and configured to allow a high-frequency current to flow, wherein:
• the pipe portion has a first bent portion and a second bent portion,
• the first bent portion is located on a distal end side of the pipe portion,
• the second bent portion is located on a proximal end side of the pipe portion, and
• the first bent portion and the second bent portion are configured such that a curvature radius of an arc of the first bent portion is equal to or larger than a curvature radius of an arc of the second bent portion and a length of the arc of the first bent portion is longer than a length of the arc of the second bent portion, or
• the first bent portion and the second bent portion are configured such that the length of the arc of the first bent portion is equal to or longer than the length of the arc of the second bent portion and the curvature radius of the arc of the first bent portion is larger than the curvature radius of the arc of the second bent portion,
• the pipe portion includes a first pipe and a second pipe,
• the distal end electrode portion is provided on a distal end side of the first pipe,
• the first pipe has a proximal end side inserted into the second pipe,
• the first bent portion is located in a region of two layers including the first pipe and the second pipe, and
• the second bent portion is located in a region of a single layer that is the second pipe.