Nickel-titanium alloy wire, method of making and interventional guide wire

Abstract

The application provides a nickel-titanium alloy wire, a preparation method thereof and an interventional guide wire, and relates to the technical field of alloy wires. The nickel-titanium alloy wire is prepared by adopting cold drawing-annealing-water separation cooling multiple cycle treatment, and by controlling the annealing temperature and time of the last cycle and the remaining cycles within a specific range and the total deformation amount of cold drawing in each cycle within a specific range. The prepared nickel-titanium alloy wire product has small phase transition temperature fluctuation, good mechanical properties such as tensile strength, yield strength, recoverable strain and elongation, good function consistency, and is suitable for being used as a medical interventional guide wire, and in particular, can adapt to complex blood vessel structures and narrow parts.

Images