CONDENSED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Income Statement [Abstract]
Revenues, net	$ 625	$ 459	$ 1,110	$ 874
Cost of sales	216	210	388	490
Gross profit	409	249	722	384
Operating expenses:
Research and development	427	467	845	837
Selling, general and administrative	1,596	1,384	3,154	2,992
Total operating expenses	2,023	1,851	3,999	3,829
Loss from operations	(1,614)	(1,602)	(3,277)	(3,445)
Other income (expense):
Interest income	4	22	7	37
Interest expense	(6)	(5)	(11)	(9)
Miscellaneous income	0	1	0	1
Other income (expense), net	(2)	18	(4)	29
Net loss	(1,616)	(1,584)	(3,281)	(3,416)
Comprehensive loss	$ (1,616)	$ (1,584)	$ (3,281)	$ (3,416)
Weighted average shares outstanding - basic (in shares)	1,854,531	514,463	1,578,783	514,458
Weighted average shares outstanding - diluted (in shares)	1,854,531	514,463	1,578,783	514,458
Net loss per share - basic (in dollars per share)	$ (0.87)	$ (3.08)	$ (2.08)	$ (6.64)
Net loss per share - diluted (in dollars per share)	$ (0.87)	$ (3.08)	$ (2.08)	$ (6.64)