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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Cash flows from operating activities:    
Net loss $ (12,835,098) $ (22,672,487)
Adjustments to reconcile net loss to net cash used in operating activities:    
Accrued final fee 111,422 32,143
Amortization of debt discount 132,351  
Amortization of loan costs 58,014  
Non-cash compensation (96,268) 160,999
Depreciation and amortization 1,180,717 1,067,797
Amortization of right-of-use asset 137,780 166,321
Write off of patent cost 313,414 475,621
Bad debt expense 107,272 14,459
Stock-based compensation 2,344,671 2,486,679
Foreign currency translation (gain) loss (680,392) 733,997
Changes in operating assets and liabilities:    
Grants and accounts receivable (628,510) (603,286)
Inventories 429,004 471,822
Prepaid expenses and other current assets 504,530 1,370,510
Other assets 1,135  
Accounts payable and accrued expenses (3,165,684) 1,047,700
Net cash used in operating activities (12,085,642) (15,247,725)
Cash flows from investing activities:    
Purchases of property and equipment (215,158) (442,618)
Payments for patent costs (330,079) (357,696)
Net cash used in investing activities (545,237) (800,314)
Cash flows from financing activities:    
Proceeds from long-term debt 15,000,000  
Repayment of long-term debt (5,000,000)  
Payment of final fee (150,000)  
Payment of loan costs (697,950)  
Equity contributions - net of fees incurred 11,794 2,050,417
Proceeds from exercise of stock options   213,307
Net cash provided by financing activities 9,163,844 2,263,724
Effect of exchange rates on cash 21,226 (1,205)
Net change in cash, cash equivalents and restricted cash (3,445,809) (13,785,520)
Cash, cash equivalents and restricted cash - beginning of period 15,615,095 23,832,026
Cash, cash equivalents and restricted cash - end of period 12,169,286 10,046,506
Supplemental disclosure of cash flow information:    
Cash paid during the period for interest 771,875 275,575
Supplemental disclosure of non-cash financing activities:    
Warrants issued in connection with long-term debt 690,709  
Issuance of restricted stock units $ 198,097 $ 403,941