Statements of Operations (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenue:
Sublease	$ 246,530	$ 241,065
Total revenue	5,756,241	7,009,875
Cost of revenue:
Sublease	246,530	246,530
Total cost of revenue	951,415	1,412,053
Gross margin	4,804,826	5,597,822
Operating expenses:
Research and development	2,109,170	2,959,219
Sales and marketing	2,915,424	3,309,829
General and administrative	1,832,726	1,468,160
Total operating expenses	6,857,320	7,737,208
Operating loss	(2,052,494)	(2,139,386)
Interest income	80,963	16,566
Net loss	(1,971,531)	(2,122,820)
Cumulative dividend on convertible preferred stock	(343,723)	(353,510)
Loss attributable to common stockholders	$ (2,315,254)	$ (2,476,330)
Net loss per share attributable to common stockholders:
Basic	$ (0.03)	$ (0.04)
Diluted	$ (0.03)	$ (0.04)
Weighted average number of common shares and equivalents:
Basic	69,870,040	59,196,652
Diluted	69,870,040	59,196,652
Systems [Member]
Revenue:
Total revenue		$ 58,051
Cost of revenue:
Total cost of revenue	65,022	51,163
Disposables, Service and Accessories [Member]
Revenue:
Total revenue	5,509,711	6,710,759
Cost of revenue:
Total cost of revenue	$ 639,863	$ 1,114,360