- The additional FDA clearance for the treatment of dysphagia using NMES is based on the concept of substantial equivalence.
- What this means is that ALL electrical stimulation devices are basically equal and can be sold in the US as either a general device for multiple purposes or as a specific device for specific purposes.
- The devices are exactly the same, it is simply a strategy to capture a particular market.
The following information is taken directly from the FDA website
A device is substantially equivalent if,
in comparison to a predicate device it:
has the same intended use as the predicate device; and
has the same technological characteristics as the predicate device
or
has the same intended use as the predicate device; and
has different technological characteristics, and the information submitted to FDA;
does not raise new questions of safety and effectiveness; and
demonstrates that the device is as safe and effective as the predicate device.
Substantial equivalence is to be established with respect, but not limited to, intended use, design, energy used / delivered, materials, performance, safety, effectiveness, labeling
and other applicable characteristics such as sterility.
For more information check out https://www.fda.gov/downloads/medicaldevices/deviceregulationandguidance/guidancedocuments/ucm284443.pdf