Non magnetic motors are pushing the boundaries for MRI surgery

One out of seven American men are diagnosed with prostate cancer during their lifetime. It makes it the second most common cancer form within the group. Besides radiation, ablation of affected prostate tissue thru surgery is one of the main treatment methods.

This kind of advanced surgery is performed when the patient is located in the MRI machine. Limited space and high demands for precision movement makes it a particularly challenging procedure. 


Our friends at Profound Medical have worked hard to develop a technology that makes the procedure more effective and enables to target ablation of tissue while simultaneously protecting critical surrounding anatomy from potential side effects. Their solution is called TULSA-PRO® – a robot that combines real-time magnetic resonance imaging (MRI) with transurethral, robotically driven therapeutic ultrasound and closed-loop thermal feedback control.

The final piece of the puzzle – Piezo LEGS®

In a recent article in Medical Design Brief you can read about how PiezoMotor’s non magnetic motor Piezo LEGS® plays a major part in the design of TULSA-PRO®. The Profound Medical engineering team was looking for non magnetic motors capable of long linear travel, as well as 360° rotations and extremely precise movement.

“The biggest advantage of the Piezo LEGS® motors was first that all of the piezo elements were already packaged in the configurations that we had in mind and the overall footprint was drastically smaller than what we had before,” says Benny Yeung, Mechanical Engineering Manager at Profound Medical.

Cost-efficient technology

The combination of TULSA-PRO® and our non magnetic motor Piezo LEGS® isn’t just a unique milestone in the future of robot-assisted surgery. The low production cost of each component, user-friendly setup and time-efficient functionality entails an extensively reduced cost for hospitals and clinics that use the technology.

Read the full article or learn more about non magnetic motors.