Quarterly report pursuant to Section 13 or 15(d)

Note 13 - Related Party Transactions (Details Textual)

v3.21.2
Note 13 - Related Party Transactions (Details Textual) - USD ($)
1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Apr. 30, 2020
Apr. 29, 2020
Jan. 31, 2017
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Director [Member]                
Deferred Compensation Arrangement with Individual, Compensation Expense           $ 0.00   $ 275,000
Consultant [Member]                
Deferred Compensation Arrangement with Individual, Compensation Expense       $ 15,000   30,000    
Director of Clinical Affairs [Member]                
Royalty Expense       111,000 $ 97,000 248,000 $ 19,000  
Professional Fees       39,000 39,000 78,000 78,000  
Accounts Payable, Related Parties       134,000   134,000   127,000
Manufacturing Agreement for Handpieces [Member]                
Related Party Transaction, Purchases from Related Party $ 370,260 $ 370,260   384,000 751,000      
Manufacturing Agreement for Handpieces [Member] | Accounts Payable, Related Parties, Current [Member]                
Due to Related Parties, Current, Total       200,000   200,000   $ 362,000
Consulting Services [Member]                
Related Party Transaction, Expenses from Transactions with Related Party       $ 25,000 25,000 $ 50,000 50,000  
Consultant [Member] | Innovest S.p.A. [Member]                
Related Party Transaction, Expenses from Transactions with Related Party         $ 20,000   $ 40,000  
Consulting Services Agreement, Term (Year)     12 years