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Note 1 - Summary of Significant Accounting Policies - Schedule of Property, Plant and Equipment, Useful Life (Details)	6 Months Ended
	Jun. 30, 2018
Leasehold Improvements [Member]
Property, plant, and equipment, useful life (Year)	3 years
Demo Equipment [Member]
Property, plant, and equipment, useful life (Year)	3 years
Minimum [Member] \| Office Equipment [Member]
Property, plant, and equipment, useful life (Year)	3 years
Minimum [Member] \| Manufacturing Tooling [Member]
Property, plant, and equipment, useful life (Year)	3 years
Maximum [Member] \| Office Equipment [Member]
Property, plant, and equipment, useful life (Year)	7 years
Maximum [Member] \| Manufacturing Tooling [Member]
Property, plant, and equipment, useful life (Year)	7 years