Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities
Net loss	$ (2,616,000)	$ (2,749,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock option compensation expense	526,000	352,000
Common stock issued in lieu of salary to officers and fees for services from vendors	178,000	206,000
Common stock issued for interest	4,000	25,000
Interest expense related to amortization of the discount on convertible notes payable and line of credit	668,000	851,000
Interest expense related to the fair value of warrants issued as consent for variable debt		54,000
Loss on extinguishment of debt	214,000	184,000
Depreciation expense	16,000	16,000
Changes in assets and liabilities:
Accounts receivable	96,000	47,000
Inventories	(17,000)
Deferred revenue	(26,000)
Accounts payable and accrued expenses	210,000	129,000
Prepaid expenses and other current assets	(5,000)	(17,000)
Customer deposits	(1,000)	32,000
Net cash used in operating activities	(753,000)	(869,000)
Cash flows from investing activities
Investment in South Korean joint venture	(100,000)
Sale of equipment	16,000
Net cash used in investing activities	(84,000)
Cash flows from financing activities
Proceeds from the sale of stock	901,000
Proceeds from convertible notes payable		750,000
Repayment of note payable		(300,000)
Proceeds from notes payable		170,000
Net cash provided by financing activities	926,000	730,000
Net effect of foreign currency translation		(4,000)
Net change in cash	89,000	(143,000)
Cash at beginning of year	655,000	655,000
Cash at end of period	744,000	512,000
Supplemental disclosures of cash flow information
Interest	25,000	32,000
Income taxes	2,000	3,000
Non-cash investing and financing activities
Fair value of warrants issued with convertible notes		1,061,000
Lincoln Park deferred offering costs, recorded as additional paid-in capital	(122,000)
Deemed dividend	100,000	342,000
Allocation of stock option expense within noncontrolling interest	448,000
Conversion of Convertible Notes Payable into Common Stock [Member]
Non-cash investing and financing activities
Conversion of debt	434,000	220,000
Conversion of Convertible Notes Issued with Original Issue Discount [Member]
Non-cash investing and financing activities
Conversion of debt		217,000
Clyra Medical Common Stock [Member]
Cash flows from financing activities
Proceeds from the sale of stock	$ 25,000	$ 110,000