MEDICAL APPLIANCE FOR TREATING INSIDE OF BIOLOGICAL DUCT

摘要

A medical appliance for treating the inside of a biological duct enabling an increase in manufacturing efficiency and a reduction in cost. A filter part (2) is formed at a position along the axial direction of a cylindrical insertion tube (1) formed of a shape memory alloy. The filter part (2) is formed by forming a plurality of openings (4) in the peripheral surface of the insertion tube (1) by laser cutting, contracting the filter part formed portion (2a) of the insertion tube (1) in the axial direction of the insertion tube (1), and in the state of each filter formed part (1a) of the insertion tube (1)formed between the opening parts (4) deflected in the radial outer direction of the insertion tube (1), storing the shape of the filter part in each filter formed part (1a).