Method for manufacturing medical linear member

A method of manufacturing a medical linear member, the method comprising:

• a step of forming a first spiral body whose cross-sectional shape is a perfect circular shape by spirally winding a base body having a plurality of arrayed wires formed of a shape memory alloy, around a winding core formed of a round bar, at intervals in a direction along an axial length of the winding core;
• a step of performing a first shape memory process by heating the first spiral body;
• a step of cutting the first spiral body into a first predetermined length;
• a step of removing the winding core from the cut first spiral body;
• a step of forming a second spiral body whose cross-sectional shape is a flat shape by compressing the first spiral body from which the winding core is removed, in a diametral direction of the substantially perfect circular shape;
• and
• a step of performing a second shape memory process by heating the second spiral body.