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Common Stock, and Warrants With-Down Round Protection (Tables) | 12 Months Ended
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Dec. 31, 2020
Schedule of Stock Grants Activity |
Grants to Employees |  | Number |  |  | Weighted average exercise price (US$) |
Balance outstanding of December 31,2018 |  |  | 3,992,610 |  |  |  | 4.7 |
Balance exercisable of December 31,2018 |  |  | 2,721,587 |  |  | $ | 4.63 |
Granted during 2019 |  |  | 75,000 |  |  | $ | 4.5 |
Forfeited during 2019 |  |  | (2,039,525 | ) |  | $ | 4.51 |
Balance outstanding as of December 31,2019 |  |  | 2,028,085 |  |  | $ | 4.88 |
Balance exercisable of December 31,2019 |  |  | 1,724,194 |  |  | $ | 4.63 |
Granted during 2020 |  |  | - |  |  | $ | - |
Forfeited during 2020 |  |  | (335,014 | ) |  | $ | 4.51 |
Balance outstanding as of December 31,2020 |  |  | 1,693,071 |  |  | $ | 4.95 |
Balance exercisable of December 31,2020 |  |  | 1,667,853 |  |  |  | 4.96 |
Schedule of Stock Grants, by Exercise Price Range | The following tables summarize information about options outstanding at December 31, 2020:
Exercise price (US$) |  |  | Outstanding at December 31, 2020 |  |  | Exercisable at December 31, 2020 |  |  | Weighted average remaining contractual life (years) |
| 4.50 |  |  |  | 1,298,859 |  |  |  | 1,273,651 |  |  |  | 6.54 |
| 6.25 |  |  |  | 344,212 |  |  |  | 344,212 |  |  |  | 1.19 |
| 7.75 |  |  |  | 50,000 |  |  |  | 50,000 |  |  |  | 6.26 |
|  |  |  |  | 1,693,071 |  |  |  | 1,667,863 |  |  |  |  |
Schedule of Assumptions Used to Value Options | The following are the data and assumptions used:
Fair value calculations - Warrant |  | December 31, 2019 |
Dividend yield (%) |  |  | - |
Expected volatility (%) (*) |  |  | 56.32 |
Risk free interest rate (%) |  |  | 2.5 |
Expected term of options (years) |  |  | 5 |
Exercise price (US dollars) |  |  | 0.258-5.400 |
Share price (US dollars) (**) |  |  | 0.258 |
Fair value (US dollars) |  |  | 0.004-0.134 |
|  | (*) | Due to the low trading volume of the Company’s Common Stock, the expected volatility for 2019 grants was based on a sample of 248 companies operating in the Healthcare Products industry, respectively.
|  | (**) | The Common Stock price, per share for the year ended December 31, 2019 reflects the Company’s management’s estimation of the fair value per share of Common Stock. In reaching its estimation for December 31, 2019, management considered, among other things, a valuation prepared by a third-party valuation firm following the issuance of the Series D Units.
Warrant [Member] |
Schedule of Fair Value Assumptions |
|  | As of December 31, 2020, and 2019, the key inputs used in the fair value calculations of the warrant that were affected by the down-round protection were as follows:
Fair value calculations – Warrant |  | 31-Dec-20 |  |  | 31-Dec-19 |
Dividend yield (%) |  |  | - |  |  |  | - |
Expected volatility (%) |  |  | 56.32 |  |  |  | 56.32 |
Risk free interest rate (%) |  |  | 2.5 |  |  |  | 2.5 |
Expected term of options (years) |  |  | 5 |  |  |  | 5 |
Exercise price (US dollars) |  |  | 0.4 |  |  |  | 0.258-5.400 |
Share price (US dollars) |  |  | 0.4 |  |  |  | 0.258 |
Fair value (US dollars) |  |  | 0.2 |  |  |  | 0.003-0.134 |

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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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