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v3.22.1

Note 12 - Related Party Transactions (Details Textual) - USD ($) |  | 3 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jul. 10, 2017 | Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2021 | Mar. 02, 2021 | Mar. 01, 2021
Interim Chief Executive Officer [Member] |  |  |  |  |  |
Royalty on Net Sales, Percentage |  |  |  |  | 2.50% |
Director Clinical Affair [Member] |  |  |  |  |  |
Royalty on Net Sales, Percentage |  |  |  |  | 2.50% | 5.00%
Director of Clinical Affairs [Member] |  |  |  |  |  |
Royalty Expense |  | $ 133,000 | $ 136,000 |  |  |
Professional Fees |  | 39,000 | 39,000 |  |  |
Accounts Payable, Related Parties |  | 133,000 |  | $ 123,000 |  |
Previous President and Chief Executive Officer [Member] |  |  |  |  |  |
Increase (Decrease) in Deferred Compensation | $ (100,000) |  |  |  |  |
Employment Agreement, Base Compensation | 200,000 |  |  |  |  |
Consultant [Member] |  |  |  |  |  |
Deferred Compensation Arrangement with Individual, Compensation Expense |  | 50,000 | 0 |  |  |
Increase (Decrease) in Deferred Compensation | (100,000) |  |  |  |  |
Employment Agreement, Base Compensation | $ 200,000 |  |  |  |  |
Managing Director, China Operations [Member] |  |  |  |  |  |
Deferred Compensation Arrangement with Individual, Compensation Expense |  | 50,000 | 0 |  |  |
Manufacturing Agreement for Handpieces [Member] |  |  |  |  |  |
Related Party Transaction, Purchases from Related Party |  | 1,200,000 | 385,000 |  |  |
Manufacturing Agreement for Handpieces [Member] | Accounts Payable, Related Parties, Current [Member] |  |  |  |  |  |
Due to Related Parties, Current, Total |  |  | 1,100,000 | $ 548,000 |  |
Consulting Services [Member] |  |  |  |  |  |
Related Party Transaction, Expenses from Transactions with Related Party |  | 25,000 | 25,000 |  |  |
Deferred Compensation Arrangement with Individual, Compensation Expense |  | $ 0 | $ 15,000 |  |  |

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