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Consolidated Statements of Cash Flows - USD ($)
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Cash flows from operating activities:    
Income (loss) for the year $ (6,715,420) $ (10,328,806)
Adjustments to reconcile income (loss) for the year to net cash used in operating activities:    
Depreciation 58,789 67,878
Stock-based compensation 705,248 2,672,279
Stock based compensation to financial advisor - warrants with Down-Round Protection 32,880
Change in the fair value of warrants issued with down-round protection (300,322)
Linkage difference on principal of loans from stockholders (927) 3,034
Changes in assets and liabilities:    
Decrease (increase) in accounts receivable 89,307 (19,274)
Decrease in inventory 720,378 608,212
Increase in other current assets 64,172 286,834
Increase in accounts payable (261,915) 620,798
Increase (decrease) in other current liabilities 448,091 471,334
Increase in funds in respect of employee rights upon retirement (9,861)
Net cash used in operating activities (4,892,277) (5,895,014)
Cash flows from investment activities:    
Purchase of property and equipment (5,371) (19,467)
Net cash used in investment activities (5,371) (19,467)
Cash flows from financing activities    
Cash dividend on Series A Preferred Stock (5,731)
Proceeds allocated to Series C Preferred Stock, net of cash issuance expenses 3,598,254
Proceeds allocated to Series C Warrants, net of cash issuance expenses 1,780,963
Proceeds allocated to Series D Warrants, net of cash issuance expenses 2,258,607 171,837
Proceeds allocated to Common Stock from Series D offering, net of cash issuance expenses 2,703,255 205,413
Net cash provided by (used in) financing activities 4,961,862 5,750,736
Effect of exchange rate changes on cash and cash equivalents (7,874) 72,580
Increase (decrease) in cash, cash equivalents, and restricted cash 56,340 (91,165)
cash, cash equivalents, and restricted cash at beginning of the year 93,344 184,509
cash, cash equivalents, and restricted cash at end of the year $ 149,684 $ 93,344