Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Consolidated Statements of Operations and Comprehensive Loss [Abstract]
Net sales	$ 8,864	$ 8,543
Cost of goods sold	3,881	3,788
Gross profit	4,983	4,755
Operating expenses:
Selling, general and administrative	17,191	17,584
Research and development	5,422	4,342
Total operating expenses	22,613	21,926
Loss from operations	(17,630)	(17,171)
Other income (expense), net
Other income	154	75
Financing expense	(3,483)	(9,247)
Change in fair value of warrant liability	758	11,827
Loss before income taxes	(20,201)	(14,516)
Income tax expense	(8)	(9)
Net loss	(20,209)	(14,525)
Deemed dividend attributable to Series J Convertible Preferred Stock	(2,297)	0
Dividend on Series J Convertible Preferred Stock	(121)	0
Net loss attributable to common stockholders	$ (22,627)	$ (14,525)
Basic loss per share (in dollars per share)	$ (11.52)	$ (83.55)
Diluted loss per share (in dollars per share)	$ (11.52)	$ (83.55)
Weighted average shares outstanding - basic (in shares)	1,964,406	173,846
Weighted average shares outstanding - diluted (in shares)	1,964,406	173,846
Other comprehensive loss:
Net loss	$ (20,209)	$ (14,525)
Unrealized (loss) gain on marketable securities	(56)	80
Unrealized foreign currency translation adjustment	(13)	(7)
Total comprehensive loss	$ (20,278)	$ (14,452)