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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Cash flows from operating activities:      
Loss for the year $ (10,328,806) $ (5,409,737) $ (5,842,172)
Adjustments to reconcile Loss for the year to net cash used in operating activities:      
Depreciation 67,878 59,584 44,891
Stock-based compensation 2,672,174 70,247 18,013
Stock based compensation to financial advisor - warrants with Down-Round Protection 32,880
Incremental fair market value adjustments of modified warrants issued to placement agent 211,077
Change in the fair value of warrants issued with down-round protection (300,322) (289,626) (149,092)
Linkage difference on principal of loans from stockholders 3,034 (629) (2,521)
Loss on partial extinguishment of Series A Preferred Stock and Series A Warrants 1,284,354
Changes in assets and liabilities:      
Decrease (increase) in accounts receivable (19,274) (73,440) 4,131
Decrease (increase) in inventory 608,212 (590,616) (737,554)
Decrease (increase) in other current assets 286,834 (85,415) (156,302)
Increase in accounts payable 620,798 526,560 982,215
Increase (decrease) in other current liabilities 471,334 270,165 (11,187)
Increase in funds in respect of employee rights upon retirement (9,861)
Net cash used in operating activities (5,895,119) (5,311,830) (4,565,224)
Cash flows from investment activities:      
Increase in funds in respect of employee rights upon retirement (24,279)
Purchase of property and equipment (19,467) (76,455) (143,736)
Increase in long-term restricted cash (35,152)
Net cash used in investment activities (19,467) (76,455) (203,167)
Cash flows from financing activities      
Cash dividend on Series A Preferred Stock (5,731) (13,529) (57,061)
Proceeds allocated to Series C Preferred Stock, net of cash issuance expenses 3,598,254 3,310,617
Proceeds allocated to Series C Warrants, net of cash issuance expenses 1,780,963 1,639,468
Proceeds allocated to Series D Warrants, net of cash issuance expenses 171,837
Proceeds allocated to Common Stock from Series D offering, net of cash issuance expenses 205,413
Proceeds from exercise of employees' stock options 36,137
Repayment of loan from stockholders (439,939)
Net cash provided by (used in) financing activities 5,750,736 4,936,556 (460,863)
Effect of exchange rate changes on cash and cash equivalents 68,796 (8,136) 10,395
Decrease in cash and cash equivalents (95,054) (459,865) (5,218,859)
Cash and cash equivalents at beginning of the year 148,836 608,701 5,827,560
Cash and cash equivalents at end of the year $ 53,782 $ 148,836 $ 608,701