Oct 29

Case Study: Valkyrie Eir Bands in Upper Limb Rehabilitation

Device: Valkyrie Eir Bands
Clinic: Hobbs Rehabilitation Winchester
Clinician: Anna Bion, Senior Neurological Physiotherapist
Date: 23 October 2025
Patient Profile: 46-year-old man with primary progressive multiple sclerosis (MS)

1. Introduction & Context

The patient presented with left-sided upper and lower limb weakness. He had recently begun using functional electrical stimulation (FES) for his lower limb during gait, with positive results. His upper limb had become the focus of therapy, as he was finding it increasingly difficult to reach for his laptop keyboard. His main impairments during reaching tasks included weakness in shoulder external rotation and flexion, forearm supination, and wrist and finger extension. The aim of using Valkyrie Eir Bands was to support upper limb activation and complement existing neuromuscular electrical stimulation (NMES) approaches. Microstim was used at an impairment level to gain finger and wrist extension repetitions at home. The Eir Bands were used for therapist-led functional movements, focusing on repetitive reach and grasp activities. The Custom Sequence mode was particularly valuable for timing agonists and antagonists and targeting both proximal and distal muscle groups; something that would have been difficult to achieve with traditional microstim devices. The visual feedback from the app further enhanced treatment precision and engagement.

About The MiNT Academy:
The MiNT Academy supports innovators by trialling novel rehabilitation technologies. Valkyrie approached MiNT in late 2024 to act as early adopters, leveraging our clinical experience with innovative solutions. We received devices and training in exchange for providing clinician and patient feedback through this case study. 

About Valkyrie Industries:
Founded in 2017, Valkyrie Industries integrates extended reality (XR) with a patented NMES wearable. Their v-health platform combines immersive XR environments with wireless NMES to deliver interactive, gamified training experiences that strengthen muscles and retrain neuromuscular pathways. With a focus on haptics, XR, and rehabilitation, Valkyrie is dedicated to helping individuals regain mobility, independence, and quality of life.

2. Setup & Implementation

  • Setting: Outpatient clinic

  • Setup time: Less than 5 minutes for setup and calibration

  • Training: 90-minute group session provided by Ivan from Valkyrie

  • App & device setup: The Eir Bands connect seamlessly to the V-Health app on a dedicated smartphone. The app is intuitive and user-friendly, and device synchronisation was trouble-free.

  • Duration: 3 sessions over 3 weeks

3. Ease of Use

Clinician Perspective:
The Eir Bands and app were extremely easy to learn, apply, and adjust. The interface is well designed, both visually appealing and highly functional. The bands are lightweight, sleek, and easy to fit, with secure electrode connections. Adjustments within the app can be made quickly to tailor stimulation to individual needs. The only minor issue observed was that the electrodes lost adhesiveness faster than expected compared to other brands.


Patient Perspective:

Feedback from the patient was positive. He found the bands comfortable, attractive, and appreciated the wireless design. The simplicity of setup and the effectiveness of stimulation contributed to motivation and engagement throughout therapy.

5. Observed Outcomes

Qualitative Results:
The device produced strong, comfortable muscle contractions while maintaining isolation of targeted muscle groups. The patient achieved movements previously impossible without assistance, enabling meaningful reach and grasp exercises. The Eir Bands’ design and intuitive app encouraged engagement and confidence during therapy.

Quantitative Results:

  • Wrist and finger extension improved from 1/5 to 3/5 active movement strength

  • Improved conditioning and proprioceptive feedback through repeated stimulation


Adverse Events:
None reported.

6. Discussion & Lessons Learned

What Worked Well:
The Custom Sequence mode was particularly effective for functional, repetitive tasks involving multiple muscle groups. The app’s adjustability and real-time control enhanced the precision and value of therapy sessions.


Challenges:

Electrode placement required some trial and error.


Resolution:

Helpful illustrated blog posts on Valkyrie’s website provided practical guidance for electrode placement and optimisation.


Comparison to Other NMES Systems:

The Eir Bands’ wireless design, smartphone control, and adjustability offered a significant improvement over previous NMES systems. The absence of technical issues further reinforced clinician confidence.

These findings reflect feedback from Hobbs Rehabilitation clinicians at The MiNT Academy, who are experienced in evaluating novel rehabilitation solutions and providing structured early-adopter insights.

7. Future Implementation & Recommendations

Suggested Improvements:
The current games and trigger-based modes felt less task-relevant. Incorporating EMG or motion-triggered stimulation, where electrical stimulation assists patient-initiated contractions, could make sessions more functional and interactive—particularly for lower limb applications.


Home Use Potential:

The clinician would feel confident prescribing Eir Bands for home use on simpler, single-joint tasks. More complex, multi-joint functional activities would benefit from supervision to ensure correct settings and safety.


Training & Support:

Practical patient workshops would enhance confidence and optimize outcomes for both clinicians and patients.


Long-Term Integration at Hobbs Rehabilitation:

Eir Bands are viewed as a valuable and versatile tool for upper limb functional rehabilitation. Patient trial or loan models could help integrate the technology into standard clinical practice.

8. Conclusion

“I have really enjoyed using the Eir Bands. They are easy to learn, fit, and set up. The app and device are responsive, reliable, and highly adjustable, making them ideal for functional upper limb repetitive tasks. The stimulation is effective, the design is sleek and practical, and I’ve had no technical difficulties—this gives me great confidence in using them regularly for rehabilitation.”

Anna Bion, Senior Neurological Physiotherapist, Hobbs Rehabilitation/The MiNT Academy

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