K-tor products have numerous medical uses. Many have been purchased for rehab purposes and emergency power for medical devices to recharge batteries during a power outage.
The hand crank generator and pedal powered generator have both been used for rehab. They are typically much less expensive than medical devices and the resistance can be adjusted by adjusting the load.
The Power Box pedal generator can be used as a power source to keep medical devices working in the case of a power failure or in remote regions.