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Exoskeletal System for Radiation Protection

lead apron by stemrad for medical staff
From the Makers of Radiation
Protection for NASA Astronauts

Our Customers

lead apron

Current X-ray protective solutions (lead aprons and tethered solutions) are either too heavy or too limiting to the practitioner’s mobility. Critically, most solutions lack essential radiation protection, leaving the head and face of the operator exposed to harmful radiation.

Our next generation of X-ray protection gear – The StemRad MD – is based on an exoskeleton that bears the weight of the shielding, relieving you from the pain of wearing lead aprons while adding critical protection. Importantly, you enjoy complete freedom of movement. Full Protection with Full Mobility – StemRad MD.


lead apron

Shielding Medical Teams from Radiation

radiation protection Long-term use of protective lead aprons is correlated with neck, spine, hip and knee injuries (musculoskeletal disorders).
radiation protection Current protective solutions lack fundamental ergonomics and offer compromised protection.
radiation protection Interventionalists sometimes refrain from using heavy protective gear and instead wear light aprons - thus exposing themselves to radiation risks.
radiation protection StemRad MD is the only solution that offers full freedom of movement, which does not come at the cost of reduced radiation protection.

“At the end of the day, our spines, hips and knees ache from the burden of the protective apparel we wear. Although numerous lead apron designs have been developed and marketed as ergonomically superior, no truly successful design exists.”

Source: Klein, Lloyd W., et al. “Occupational Health Hazards in the Interventional Laboratory: Time for a Safer Environment” Catheterization and Cardiovascular Interventions 73.3 (2009).

Product Specifications

lead apron
radiation protection
Keeping Physician Radiation Dose As Low As Reasonably Achievable (ALARA)
radiation protection
Maximizing Protection while Negating the Weight
lead apron
0.30 mm lead eq. (91.5% attenuation at 100 kVp)
Integrated Thyroid Collar
0.50 mm lead eq. (97.2% attenuation at 100 kVp)
Expanded Protection
0.50 mm lead eq. on both front and sides. 1.0 mm lead eq. in front overlap area
Proprietary Exoskeleton
Removes up to 100% of the weight from the user's body
radiation protection
radiation protection

Full head protection allowing you to wear your own prescription glasses.

The Protective Visor:

  • Protects from lower-angle scattered radiation
    without interrupting the line of sight to the monitor.
  • Provides a much greater area of coverage compared with lead glasses for improved protection of the face, head, eyes and brain.
  • Visor weight is completely supported by the exoskeletal system.
  • The visor negates the need for protective eyewear.
    and allows you to wear your own prescription glasses.
radiation protection
radiation protection

State-of-the-art lead-free material,
Tested: 60kVp-110kVp
IEC EN 61331 – 1:2014

The Protective Envelope:

  • More robust attenuation compared to aprons, maximizing
    user protection on the front and sides.
  • Upper arm sleeves prevent radiation scatter into
    the chest.
  • Integrated thyroid collar negates the need for
    extra protective apparel.
radiation protection
radiation protection

Proprietary exoskeleton which channels all of the weight to the floor while enabling free movement.

The Exoskeletal System:

  • Removes the weight of the robust protective
    elements from the operator and transfers it to the floor.
  • Provides seamless turning and bending via
    patented hip and knee joints.
  • Allows for unimpeded walking while still
    supporting the load.
radiation protection
radiation protection

Dedicated mobile hanger system enabling easy entry and exit of the system.

The Mobile Hanger System:

  • Serves as dual purpose stowage and
    donning/doffing solution.
  • Provides easy transferability of the system
    around the hospital.

Data & Literature

Radiation-Induced Cancer Risk

Interventionalists annual head exposure (20-30 mSv) is nearly 10 times higher than their whole body exposure.

There is a disproportionate number of tumors on the left side of the brains of interventionalists, the region of the head known to be more exposed to radiation and least protected by traditional shielding.

Elevated risks of brain cancer, breast cancer, and melanoma among technologists who performed fluoroscopically guided interventional procedures.

Cataracts Risk

Posterior subcapsular lens changes (cataracts precursor) were found in 50% of interventional cardiologists and 41% of nurses and technicians compared to about a 10% incidence in control groups.

Interventional radiology work increases the probability of cataract development and enhanced protective measures for the eyes are highly recommended.

Lead glasses offer only limited protection (far less than the lead equivalence indicates) to the eyes due to radiation scattered through the head circumventing the shielding.

Musculoskeletal Disorder Prevalence

Significantly higher axial skeletal complaints (cervical and multiple disc.) and greater frequency of missed days of work associated with use of lead aprons.

25% of Interventional cardiologists experience problems related to their hips, knees or ankles and even more alarming is that 60% experience spinal problems after 21 years of practice. Those working less than 5 years had 26% incidence of spinal issues.

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lead apron
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