Multi Filar Coil

A coil made from two or more wires wound together. In catheter design, multi-filar construction allows engineers to fine-tune reinforcement and flexibility by varying the number of wires, their arrangement, or even their material. Designers can combine different wire types such as round and flat, or stainless steel and nitinol to create unique performance characteristics tailored to the application.

Why it matters: Multi-filar coils give designers a powerful way to balance strength, flexibility, and torque response, opening up a wide range of customizable properties.