CONDENSED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Income Statement [Abstract]
Revenues, net	$ 459	$ 305	$ 874	$ 538
Cost of sales	210	163	490	304
Gross profit	249	142	384	234
Operating expenses:
Research and development	467	381	837	768
Selling, general and administrative	1,384	1,761	2,992	3,511
Total operating expenses	1,851	2,142	3,829	4,279
Loss from operations	(1,602)	(2,000)	(3,445)	(4,045)
Other income (expense):
Interest income	22	7	37	15
Interest expense	(5)	0	(9)	0
Miscellaneous income	1	0	1	0
Other income, net	18	7	29	15
Net loss	(1,584)	(1,993)	(3,416)	(4,030)
Comprehensive loss	$ (1,584)	$ (1,993)	$ (3,416)	$ (4,030)
Weighted average shares outstanding - basic (in shares)	514,463	23,841	514,458	20,492
Weighted average shares outstanding - diluted (in shares)	514,463	23,841	514,458	20,492
Net loss per share - basic (in dollars per share)	$ (3.08)	$ (83.58)	$ (6.64)	$ (196.66)
Net loss per share - diluted (in dollars per share)	$ (3.08)	$ (83.58)	$ (6.64)	$ (196.66)