HHS® Tube

In medical device design, balancing torque, rotational control, elongation resistance, and trackability has always been a challenge for many applications. Traditional reinforcement methods like braiding or single-layer coils each come with trade-offs; braids add rotational control but can add complexity to the design, while coils offer movement but can lack customization. At Fort Wayne Metals, we saw that limitation not as a problem, but as an opportunity with HHS® tube.

HHS® hollow torque strand flips convention on its head. By layering multiple hollow strands––each layer made from 1 to 18 wires and alternating between clockwise and counterclockwise directions––we’ve engineered a structure where one layer’s motion reinforces the next. The result? When torque is applied, every layer works together to provide the desired rotational control or torque transmission.

Here's how HHS® tube can elevate your devices:

⚙️ Reliable torque transmission – rotational control and torque transmission achieved through a single or multi-layered strand orientation

🧩 Flexible options – customizable strand counts, filar counts, layer directions, and materials to fit specific needs including Nitinol’s superelastic performance

🩺 Enhanced durability – built to withstand repeated manipulation without compromising integrity or performance

With HHS® highly engineered multi-filar coil, precision meets possibility. This technology enables high-performance catheters that can deliver tools like needles, cameras, and grippers deep within the body, all while maintaining control from the operator’s hand. And with Nitinol, the HHS® tube can be shape set so it travels the tight vasculature and springs back to its intended shape inside the body.

We don’t just make precision wire-based materials; we engineer control and confidence into every strand. Learn more elevating your devices with HHS® tube.