Unlocking the Potential of Magnetic Couplings in Medical Device Applications

July 1, 2024

Magnetic Couplings in Medical Device Applications

Magnetic couplings serve as a cornerstone in various medical sectors, providing efficient torque transmission sans direct mechanical contact. Their adaptability and precision make them indispensable across modern medical engineering applications. 

Types of Magnetic Couplings:

Permanent Magnet Synchronous Couplings (PMSC): These couplings redefine mechanical power transmission by enabling efficient torque transfer or linear force without physical contact. With synchronous operation ensuring precise motion control, PMSCs find their niche in critical medical applications.

Eddy Current Couplings: Harnessing electromagnetic induction principles, eddy current couplings facilitate torque transfer or linear motion induction without direct mechanical contact. Their asynchronous operation and adjustable torque transmission capabilities cater to a wide array of medical applications

Hysteresis Couplings: Utilizing magnetic fields, hysteresis couplings facilitate torque transmission or linear motion sans mechanical contact. Their unique design ensures smooth and precise operation, ideal for scenarios requiring precise torque transfer or motion control.

Each type of magnetic coupling offers distinct features and benefits tailored to specific medical requirements: 

  • Permanent Magnet Synchronous Couplings (PMSC) excel in accommodating misalignments and offering overload protection, making them suitable for applications such as pumps and surgical robotics. The gap between the driver and driven elements of PMSCs allow for the introduction of a non-magnetic barrier and the elimination of mechanical seals. This increases pump reliability and the potential for leakage.    
  • Eddy current couplings provide adjustable torque transmission and vibration damping capabilities, ideal for thread tensioning and braking applications. 
  • Hysteresis couplings offer reliable torque transfer and smooth motion control, making them indispensable in scenarios requiring precise torque limiting and linear motion transmission. 

 Read more about magnetic couplings by downloading our white paper.

Selecting the Right Magnetic Coupling: 

When choosing a magnetic coupling for medical applications, factors such as speed differentials, frequency of magnetic fields, leakage fields, effective air gap, pole pair numbers, temperature effects, and material considerations must be carefully considered.  

Understanding the unique features and benefits of each coupling type empowers medical engineers to unlock new possibilities in mechanical power transmission and motion control. 

Reach out to speak with one of our magnetic experts to explore the benefits of magnetic coupling technology to optimize performance and reliability in your medical settings.