Knowledge

In the field of precision medical equipment, the choice of MRI Casters is critical.
In high-magnetic-field environments, traditional metal casters do not only interfere
with diagnostic results but can also pose severe risks to the medical environment.
This article delves into the design principles of HAION Caster's specialized
MRI non-magnetic castersand explores why Non- ferromagnetic Bearings have become
the standard core technology for top-tier medical devices.
I. What are MRI (Magnetic Resonance Imaging) Casters?
MRI casters are specialized mobile components designed specifically for MRI environments.
Their core characteristic is being completely non-ferromagnetic.
In an MRI suite, magnetic field strengths typically reach 1.5T or 3.0T and above.
If standard casters containing ferromagnetic materials such as iron, cobalt,
or nickel are used by mistake, it can lead to the following fatal issues:
   1.Projectile Effect:
      Powerful magnetic fields can instantaneously pull iron-containing metal toward the
      center of the scanner, causing equipment damage or personal injury.
   2.Image Artifacts:
      Metallic substances distort the uniformity of the magnetic field, leading to "black holes"
      or distortions in diagnostic images.
   3.Equipment Calibration Failure:
      Subtle magnetic interference can also affect the operational precision of highly
      sensitive medical instruments.
II. Why is the Use of General Casters Prohibited in Magnetic Environments?
Many believe that "stainless steel" is safe because it isn't easily attracted by magnets.
However, in professional MRI environments, the standards are far more rigorous.
HAION Caster strictly adheres to the following criteria:
    1.Magnetic Permeability Issues:
       Many types of stainless steel (such as 304) can develop weak magnetism during processing,
       which is enough to interfere with high-end 3.0T+ scanners.
    2.Eddy Currents:
       When metal objects move within a strong magnetic field, internal eddy currents are generated,
       creating a counter-magnetic field that interferes with equipment signals.
    3.Safety Certification Standards:
       HAION Casters are certified as "MRI Safe," whereas standard wheels undergo no such testing.
III. Common Applications of HAION Caster MRI non-ferromagnetic Casters
High-quality non-ferromagnetic casters are widely utilized in:
    1.MRI-compatible transfer stretchers and wheelchairs.
    2.Non-magnetic oxygen cylinder racks and IV poles.
    3.Vital signs monitor mobile stands.
    4.Precision endoscope and surgical carts. 
IV. FAQ
     Q1: If my equipment is only kept in the hallway outside the MRI room,
     do I still need to use non-ferromagnetic casters?
        A: For safety reasons, it is highly recommended.
        The magnetic field of an MRI room has strong permeability, and there is always a risk of
        equipment being mistakenly pushed into the scan room in a busy medical environment.
        Using HAION Caster non-ferromagnetic casters provides a "last line of defense" for safety.
      Q2: Are Antistatic and Non-ferromagnetic properties the same thing?
         A: No. Antistatic refers to the dissipation of static electricity to prevent damage to
         sensitive electronic components.  Non-ferromagnetic means the material does not
         react to or get attracted by magnetic fields. HAION Caster's MRI series typically features
         both properties to ensure that equipment is neither affected by magnetic attraction nor
         static interference during movement.
      Q3: Since stainless steel casters are available,
       why can't they be used directly in the MRI scan room?
         A: While the magnetic permeability of 304 or 316 stainless steel is extremely low,
         the cold-working process (such as stamping or drawing) can induce a
         martensitic transformation, creating weak magnetism.
         Additionally, any metal moving within a strong magnetic field
         generates Eddy Currents, which can distort image quality.
         HAION Caster's specialized MRI caster use non-ferromagnetic treatments
         from the bearings to the housing to ensure compliance with MRI Safe standards.
      Q4: Is the load capacity of non-magnetic casters lower than that of standard medical casters?
         A: No. The structural design of HAION Caster undergoes rigorous load testing to support
         heavy medical carts and transfer beds. Their load-bearing capacity is equivalent to that
         of standard medical casters of the same specifications.