Statements of Operations - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Revenue:
Total revenue	$ 26,630,035	$ 28,902,550
Sublease	986,120	986,123
Cost of revenue:
Total cost of revenue	7,664,246	6,136,459
Sublease	986,120	986,122
Gross margin	18,965,789	22,766,091
Operating expenses:
Research and development	8,136,914	9,021,403
Sales and marketing	11,178,325	12,733,389
General and administrative	6,364,365	5,838,158
Total operating expenses	25,679,604	27,592,950
Operating loss	(6,713,815)	(4,826,859)
Interest income, net	67,356	235,575
Net loss	(6,646,459)	(4,591,284)
Cumulative dividend on Series A convertible preferred stock	(1,369,421)	(1,429,400)
Loss attributable to common stockholders	$ (8,015,880)	$ (6,020,684)
Net loss per share attributable to common stockholders:
Basic	$ (0.11)	$ (0.10)
Diluted	$ (0.11)	$ (0.10)
Weighted average number of common shares and equivalents:
Basic	72,746,268	63,051,581
Diluted	72,746,268	63,051,581
Systems [Member]
Revenue:
Total revenue	$ 3,626,284	$ 2,066,253
Cost of revenue:
Total cost of revenue	3,715,416	1,411,423
Disposables, Service and Accessories [Member]
Revenue:
Total revenue	22,017,631	25,850,174
Cost of revenue:
Total cost of revenue	$ 2,962,710	$ 3,738,914