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Note 4 - Debt Obligations - Schedule of Debt (Details) - USD ($)
Mar. 31, 2019
Dec. 31, 2018
Notes payable $ 490,000 $ 400,000
Convertible Notes Payable, Current 2,072,000 1,365,000
Total current liabilities 2,992,000 2,195,000
Long-term Debt, Excluding Current Maturities, Total 1,242,000 1,292,000
Total 4,234,000 3,487,000
Notes Payable, Maturing June 6, 2019 [Member]    
Notes payable 440,000 400,000
Convertible Notes Payable, Current 440,000  
Note Payable, Maturing March 8, 2023 [Member]    
Notes payable 50,000
Line of Credit, Maturing September 1, 2019 [Member]    
Long-term Line of Credit, Total [1] 430,000 430,000
Convertible Notes Maturing on December 31, 2019 [Member]    
Convertible Notes Payable, Current 75,000 75,000
Convertible Notes Maturing January 11, 2019 [Member]    
Convertible Notes Payable, Current 300,000
Convertible Note, Maturing on July 15, 2019 [Member]    
Convertible Notes Payable, Current [1] 420,000 550,000
Convertible Notes, Maturing July 20, 2019 [Member]    
Convertible Notes Payable, Current [2] 440,000 440,000
Convertible Note, Maturing October 7, 2019 [Member]    
Convertible Notes Payable, Current 370,000
Convertible Note, Maturing November 5, 2019 [Member]    
Convertible Notes Payable, Current 554,000
Convertible Nine Month Notes, due October, November 2019 [Member]    
Convertible Notes Payable, Current 213,000
Convertible Notes Issued by Clyra Medical Maturing on June 17, 2020 [Member]    
Long-term Debt, Excluding Current Maturities, Total 1,007,000 1,007,000
Convertible Notes, Maturing on June 20, 2020 [Member]    
Long-term Debt, Excluding Current Maturities, Total 25,000 25,000
Convertible Notes, Maturing April 20, 2021 [Member]    
Long-term Debt, Excluding Current Maturities, Total [1] 100,000 100,000
Convertible Notes, Mature June 15, 2021 [Member]    
Long-term Debt, Excluding Current Maturities, Total 110,000 110,000
Convertible Note, Maturing On March 8, 2023 [Member]    
Long-term Debt, Excluding Current Maturities, Total $ 50,000
[1] See Note 14 "Subsequent Events"
[2] These notes are convertible at our option at maturity.