Condensed Consolidated Statements of Operations - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Statement [Abstract]
Product and product-related services revenue	$ 1,491,582	$ 2,074,204	$ 2,676,036	$ 3,509,350
Operating expenses:
Cost of product and product-related services revenue	1,014,469	971,043	1,869,517	1,756,243
Selling, general and administrative	4,306,916	3,903,815	8,969,927	7,763,434
Research and development	1,847,101	1,281,361	3,767,531	2,653,401
Total operating expenses	7,168,486	6,156,219	14,606,975	12,173,078
Operating loss	(5,676,904)	(4,082,015)	(11,930,939)	(8,663,728)
Other income (expense):
Interest expense	(238,515)	(260,289)	(487,827)	(530,646)
Interest income	32,090	7,820	38,304	14,032
Gain on forgiveness of PPP Loan	0	1,735,792	0	1,735,792
Total other income (expense)	(206,425)	1,483,323	(449,523)	1,219,178
Net loss before income taxes	(5,883,329)	(2,598,692)	(12,380,462)	(7,444,550)
Provision for income taxes	(4,880)	(16,260)	(5,266)	(18,709)
Net loss	$ (5,888,209)	$ (2,614,952)	$ (12,385,728)	$ (7,463,259)
Net loss per share, basic	$ (0.54)	$ (0.39)	$ (1.30)	$ (1.17)
Net loss per share, diluted	$ (0.54)	$ (0.39)	$ (1.30)	$ (1.17)
Shares used in computing net loss per share, basic	11,002,456	6,687,330	9,515,376	6,365,827
Shares used in computing net loss per share, diluted	11,002,456	6,687,330	9,515,376	6,365,827