Medical Power Supplies

MuReva Phototherapy System

Application

Photobiomodulation (PBM) offers a safe and effective treatment for Oral Mucositis with over 20 years of supporting clinical research. Unfortunately, limitations of current light-delivery technology had prevented its adoption sooner. MuReva’s new technology overcomes the current barriers and creates the first commercially viable, patient-friendly solution: the MuReva Phototherapy System.

The Challenge

• Modified standard power supply that meets a challenging medical application
• Specific requirements that could not be met by standard power supply
• Specific EMC issues

The Solution

TT identified and offered a 24V, 65W medical-grade open frame power supply, providing Mureva with an OTS elegant solution that met or exceeded all system performance requirements, packaged within the solution’s architecture (open frame power supply), and complied with required safety standards. TT, and our local channel partner, provided ongoing technical support while managing very dynamic supply chain disruptions to mitigate schedule risk.

Medical Power Supply Challenges Solved and Time to Market Accelerated

Product 

Normatec Pulse 2.0 & Normatec Pulse Pro 2.0 
Professional Grade Athlete Recovery System 

What We Did 

Armed with a power supply, components and filters our Engineering Manager drove from our facility in Hudson Massachusetts (USA) to meet Normatec at the EMC lab. First, we tried our standard power supply however this failed EMC. Upon a deep review of the frequencies in question, we realized that the noise was indeed not coming from the power supply but coming from the Normatec unit. Additional filtering was going to be needed, but there was no room in the Normatec equipment for any further filtering. 

Based on the frequencies and the attenuation needed, we changed the ferrite EMC filter on the power supply output cable, so that it would have the attenuation needed at those frequencies. We hand-built a unit while at the EMC lab in our commitment to get the job done. The test was repeated and received a solid pass with more than 6db of margin. We then re-tooled the ferrite EMC filter on the output cable which now had multiple turns on it, and we were able to solve the system level EMC issue.