CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited)
Sales - devices and disposables	$ 5	$ 2	$ 10	$ 2
Cost of goods sold	1	0	2	0
Gross profit	4	2	8	2
Operating expenses:
Research and development	9	20	31	36
Sales and marketing	37	30	77	66
General and administrative	675	513	1,062	1,340
Total operating expenses	721	563	1,170	1,442
Loss from operations	(717)	(561)	(1,162)	(1,440)
Other income (expenses):
Interest expense	(256)	(315)	(357)	(456)
Change in fair value of derivative liability	14	0	8	(88)
Gain (loss) from extinguishment of debt	34	(185)	75	(185)
Change in fair value of warrants	0	0	0	448
Other income (expenses)	(1)	27	4	27
Total other income (expense)	(209)	(473)	(270)	(254)
Loss before income taxes	(926)	(1,034)	(1,432)	(1,694)
Provision for income taxes	0	0	0	0
Net loss	(926)	(1,034)	(1,432)	(1,694)
Preferred stock dividends	(81)	(125)	(629)	(177)
NET LOSS ATTRIBUTABLE TO COMMON STOCKHOLDERS	$ (1,007)	$ (1,159)	$ (2,061)	$ (1,871)
NET LOSS PER SHARE ATTRIBUTABLE TO COMMON STOCKHOLDERS
Basic	$ (0.04)	$ (0.09)	$ (0.09)	$ (0.14)
Diluted	$ (0.04)	$ (0.09)	$ (0.09)	$ (0.14)
Weighted average shares outstanding
Basic	26,337	13,280	23,526	13,226
Diluted	26,337	13,280	23,526	13,226