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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Revenue recognition (Details) | 12 Months Ended
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Dec. 31, 2025 USD ($) item | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($)
Revenue recognition |  |  |
Estimated contractual allowances | $ 2,400,000 | $ 2,100,000 |
License revenue payable to patent owner, as a percent | 50.00% |  |
Sales, net | $ 38,266,211 | 33,049,533 | $ 43,596,926
Licensing fees |  |  |
Revenue recognition |  |  |
Sales, net | 0 | 189,000 | 778,000
Syringes |  |  |
Revenue recognition |  |  |
Sales, net | 24,909,956 | 22,629,888 | 34,155,340
Blood Collection Products |  |  |
Revenue recognition |  |  |
Sales, net | 1,369,991 | 1,425,607 | 1,926,571
EasyPoint Needles |  |  |
Revenue recognition |  |  |
Sales, net | 11,942,637 | 8,948,186 | 7,248,742
Other Products |  |  |
Revenue recognition |  |  |
Sales, net | 43,627 | 45,852 | 266,273
U.S. sales (excluding U.S. government) |  |  |
Revenue recognition |  |  |
Sales, net |  |  | 34,599,754
U.S. sales (excluding U.S. government) | Syringes |  |  |
Revenue recognition |  |  |
Sales, net |  |  | 26,119,940
U.S. sales (excluding U.S. government) | Blood Collection Products |  |  |
Revenue recognition |  |  |
Sales, net |  |  | 1,414,783
U.S. sales (excluding U.S. government) | EasyPoint Needles |  |  |
Revenue recognition |  |  |
Sales, net |  |  | 7,031,798
U.S. sales (excluding U.S. government) | Other Products |  |  |
Revenue recognition |  |  |
Sales, net |  |  | 33,233
U.S. sales |  |  |
Revenue recognition |  |  |
Sales, net | 32,236,899 | 29,374,145 |
U.S. sales | Syringes |  |  |
Revenue recognition |  |  |
Sales, net | 21,082,703 | 19,491,747 |
U.S. sales | Blood Collection Products |  |  |
Revenue recognition |  |  |
Sales, net | 1,344,293 | 1,259,289 |
U.S. sales | EasyPoint Needles |  |  |
Revenue recognition |  |  |
Sales, net | 9,779,025 | 8,595,794 |
U.S. sales | Other Products |  |  |
Revenue recognition |  |  |
Sales, net | 30,878 | 27,315 |
North and South America sales (excluding U.S.) |  |  |
Revenue recognition |  |  |
Sales, net | 5,060,698 | 1,960,769 | 6,085,166
North and South America sales (excluding U.S.) | Syringes |  |  |
Revenue recognition |  |  |
Sales, net | 3,185,850 | 1,895,393 | 5,858,726
North and South America sales (excluding U.S.) | Blood Collection Products |  |  |
Revenue recognition |  |  |
Sales, net |  | 96 |
North and South America sales (excluding U.S.) | EasyPoint Needles |  |  |
Revenue recognition |  |  |
Sales, net | 1,874,848 | 59,040 |
North and South America sales (excluding U.S.) | Other Products |  |  |
Revenue recognition |  |  |
Sales, net |  | 6,240 | 226,440
Other international sales |  |  |
Revenue recognition |  |  |
Sales, net | 968,614 | 1,714,619 | 2,912,006
Other international sales | Syringes |  |  |
Revenue recognition |  |  |
Sales, net | 641,403 | 1,242,748 | 2,176,674
Other international sales | Blood Collection Products |  |  |
Revenue recognition |  |  |
Sales, net | 25,698 | 166,222 | 511,788
Other international sales | EasyPoint Needles |  |  |
Revenue recognition |  |  |
Sales, net | 288,764 | 293,352 | 216,944
Other international sales | Other Products |  |  |
Revenue recognition |  |  |
Sales, net | $ 12,749 | $ 12,297 | $ 6,600
U.S. |  |  |
Revenue recognition |  |  |
Period for return of incorrect domestic shipments | 10 days |  |
Number of times overstocking returns are limited | item | 2 |  |
Period for return of product due to overstock | 12 months |  |
Maximum percentage of distributor's total purchase for the prior 12-month period | 1.00% |  |

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