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Note 10 - Segment and Geographic Data - Summary by Reporting and Operating Segments (Details) - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Product sales, net $ 2,323,466 $ 1,853,764 $ 4,555,886 $ 4,102,609  
Cost of products sold 705,860 442,560 1,290,845 1,015,302  
Gross Margin 1,617,606 1,411,204 3,265,041 3,087,307  
Salaries & employee benefits 839,973 848,166 1,604,693 1,711,122  
Stock-based compensation expense 159,678 207,688 490,466 521,193  
Royalty expense 119,779 94,950 232,270 210,642  
Marketing 78,110 169,990 190,320 283,500  
Rent & occupancy costs 44,212 44,982 77,267 75,589  
Consultants and professional services fees 900,591 753,796 2,185,236 1,693,193  
Insurance 125,806 131,570 260,111 282,393  
Warehousing expense 128,906 139,387 251,199 252,729  
Regulatory expense 333,162 145,714 417,214 249,212  
Travel expense 73,205 72,174 139,309 123,994  
Research and development expenses 51,789 314,968 420,909 409,179  
Depreciation and amortization expense 19,496 8,477 38,936 20,161  
Other segment items 227,530 259,765 439,595 499,891  
Total operating expenses 3,102,237 3,191,627 6,747,525 6,332,798  
Operating income (loss) (1,484,631) (1,780,423) (3,482,484) (3,245,491)  
Total Assets 8,050,830   8,050,830   $ 9,797,072
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]          
Product sales, net 32,100 19,000 83,350 26,420  
Cost of products sold 994 (99) 1,084 4,347  
Gross Margin 31,106 19,099 82,266 22,073  
Salaries & employee benefits 192,733 195,922 398,847 398,810  
Stock-based compensation expense 0 0 0 2,078  
Royalty expense 1,605 950 4,168 1,321  
Marketing 19,907 9,400 44,227 17,717  
Rent & occupancy costs 8,657 7,652 16,483 15,304  
Consultants and professional services fees 119,069 267,114 261,359 486,762  
Insurance 40,078 3,661 82,514 33,598  
Warehousing expense 17,188 14,978 25,961 19,872  
Regulatory expense 3,087 6,332 5,399 6,332  
Travel expense 35,330 24,204 65,292 47,154  
Research and development expenses 4,700 0 9,013 909  
Depreciation and amortization expense 0 0 0 0  
Other segment items 11,904 1,966 13,405 6,916  
Total operating expenses 454,258 532,179 926,668 1,036,773  
Operating income (loss)   (513,080) (844,402) (1,014,700)  
Total Assets 386,584   386,584   444,513
Dental Segment [Member] | Operating Segments [Member]          
Product sales, net 0 0 0 0  
Cost of products sold 0 0 0 0  
Gross Margin 0 0 0 0  
Salaries & employee benefits 206,777 307,416 323,885 557,899  
Stock-based compensation expense 159,678 207,688 490,466 519,115  
Royalty expense 0 0 0 0  
Marketing 10,156 20,144 14,417 48,346  
Rent & occupancy costs 21,703 25,087 34,411 35,799  
Consultants and professional services fees 698,388 485,328 1,783,082 1,122,379  
Insurance 40,503 127,909 83,375 203,882  
Warehousing expense 5,033 3,615 6,238 6,154  
Regulatory expense 263,931 140,295 328,821 237,817  
Travel expense 12,005 6,733 16,479 27,626  
Research and development expenses 0 0 0 0  
Depreciation and amortization expense 19,496 8,477 38,936 20,161  
Other segment items 79,433 154,095 152,951 297,214  
Total operating expenses 1,517,103 1,486,787 3,273,061 3,076,392  
Operating income (loss)   (1,486,787) (3,273,061) (3,076,392)  
Total Assets 2,010,665   2,010,665   3,992,825
Medical Segment [Member] | Operating Segments [Member]          
Product sales, net 2,291,366 1,834,764 4,472,536 4,076,189  
Cost of products sold 704,866 442,659 1,289,761 1,010,955  
Gross Margin 1,586,500 1,392,105 3,182,775 3,065,234  
Salaries & employee benefits 440,463 344,828 881,961 754,413  
Stock-based compensation expense 0 0 0 0  
Royalty expense 118,174 94,000 228,102 209,321  
Marketing 48,047 140,446 131,676 217,437  
Rent & occupancy costs 13,852 12,243 26,373 24,486  
Consultants and professional services fees 83,134 1,354 140,795 84,052  
Insurance 45,225 0 94,222 44,913  
Warehousing expense 106,685 120,794 219,000 226,703  
Regulatory expense 66,144 (913) 82,994 5,063  
Travel expense 25,870 41,237 57,538 49,214  
Research and development expenses 47,089 314,968 411,896 408,270  
Depreciation and amortization expense 0 0 0 0  
Other segment items 136,193 103,704 273,239 195,761  
Total operating expenses 1,130,876 1,172,661 2,547,796 2,219,633  
Operating income (loss)   $ 219,444 634,979 $ 845,601  
Total Assets $ 5,653,581   $ 5,653,581   $ 5,359,734