Annual report pursuant to Section 13 and 15(d)

Notes Payable (Details Narrative)

v3.3.1.900
Notes Payable (Details Narrative) - USD ($)
 1 Months Ended 12 Months Ended
Mar. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Debt Instrument [Line Items]      
Proceeds from common stock called   $ 3,503,314
Unamortized discount   $ 2,901,596  
Brainlab Senior Secured Note Payable [Member]      
Debt Instrument [Line Items]      
Stated interest rate   5.50%  
Description of maturity date  

Matures in April 2016.

  
Debt face amount   $ 4,289,444 4,018,139
Description of collateral terms  

The Brainlab Note is collateralized by a senior security interest in the assets of the Company.

  
Unamortized discount   $ 64,836 $ 271,305
Description of payment terms  

Principal and accrued interest is payable in a single installment upon maturity.

  
Principal and accrued interest   $ 677,722  
Private Placement (Securities Purchase Agreements) [Member] | Warrant [Member]      
Debt Instrument [Line Items]      
Proceeds from common stock called $ 3,725,000    
12% Junior Secured Notes Payable 2014 [Member]      
Debt Instrument [Line Items]      
Stated interest rate   12.00% 12.00%
12% Junior Secured Notes Payable 2014 [Member] | Private Placement (Securities Purchase Agreements) [Member]      
Debt Instrument [Line Items]      
Stated interest rate 12.00%    
Debt face amount $ 3,725,000    
Maturity term 5 years    
Debt frequency of periodic payment

Semi-annually

    
Description of collateral terms

The 2014 Secured Notes are collateralized by a security interest in the Company’s property and assets, which security interest is junior and subordinate to the security interest that collateralizes Brainlab note.

    
Unamortized discount $ 413,057 $ 301,531 $ 369,299
12% Junior Secured Notes Payable 2014 [Member] | Private Placement (Securities Purchase Agreements) [Member] | Warrant [Member]      
Debt Instrument [Line Items]      
Number of each common stock called 0.3    
Number of common stock called 1,117,500    
Warrant exercise price (in dollars per share) $ 1.75    
Fair value $ 413,057    
12% Junior Secured Notes Payable 2014 [Member] | Private Placement (Securities Purchase Agreements) [Member] | Non-Employee Directors [Member]      
Debt Instrument [Line Items]      
Debt face amount 1,100,000    
Fair value 30,210    
Placement agents cash commission $ 145,500    
Number of warrants issued to placement agent 72,750    
Other offering expenses $ 76,186