Annual report pursuant to Section 13 and 15(d)

Notes Payable (Details Narrative)

v3.19.1
Notes Payable (Details Narrative) - USD ($)
 6 Months Ended 12 Months Ended
Jun. 30, 2018
Dec. 31, 2017
Dec. 31, 2018
Debt Instrument [Line Items]      
Unamortized discount $ 1,647,601   $ 1,482,929
12% Junior Secured Notes Payable 2014 [Member]      
Debt Instrument [Line Items]      
Debt face amount   $ 1,975,000  
Maturity date Mar. 25, 2019 Mar. 25, 2019  
12% Junior Secured Notes Payable 2014 [Member] | Private Placement (Securities Purchase Agreements) [Member]      
Debt Instrument [Line Items]      
Unamortized discount   $ 67,770 23,719
12% Junior Secured Notes Payable 2014 [Member] | Placement Agents [Member] | Private Placement (Securities Purchase Agreements) [Member]      
Debt Instrument [Line Items]      
Placement agents cash commission $ 145,500    
Other offering expenses   32,660 11,430
2010 Junior Secured Notes Payable [Member]      
Debt Instrument [Line Items]      
Debt face amount   3,000,000 3,000,000
2010 Junior Secured Notes Payable [Member] | Chairman and Officer [Member]      
Debt Instrument [Line Items]      
Debt face amount   197,000 $ 197,000
2010 Junior Secured Notes Payable [Member] | Private Placement (Securities Purchase Agreements) [Member]      
Debt Instrument [Line Items]      
Stated interest rate     3.50%
Description of collateral terms Collateralized by a security interest in all the Company’s assets, which security interest is junior and subordinate to the security interest that collateralizes the 2014 Secured Notes.    
Unamortized discount   1,956,458 $ 1,459,209
Interest expense terms 10-year term of the notes using the effective interest method.    
Description of payment terms Interest on the 2010 Secured Notes will be due and payable in a single payment upon maturity in November 2020.    
Brainlab Senior Secured Note Payable [Member]      
Debt Instrument [Line Items]      
Stated interest rate     5.50%
Debt face amount   $ 2,000,000  
Maturity date Dec. 31, 2018 Dec. 31, 2018  
Warrant [Member] | 12% Junior Secured Notes Payable 2014 [Member] | Private Placement (Securities Purchase Agreements) [Member]      
Debt Instrument [Line Items]      
Number of each common stock called 0.01