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Unaudited Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Cash flows from operating activities:    
Net loss $ (13,671) $ (4,128)
Adjustments to reconcile net loss to net cash used in operating activities:    
Amortization of debt discount and imputed interest expense 680  
Warrant-related offering costs expensed 448  
Change in fair value of derivative liability 5,919 (2,875)
Stock-based compensation expense 1,031 767
Foreign exchange (gain) loss (623) 428
Depreciation expense 17 18
Amortization expense   14
Provision for (reversal of) inventory reserve 5 (15)
Non-cash operating lease expense 11 20
Changes in operating assets and liabilities:    
Accounts receivable 59 (8)
Other receivables 484 (19)
Inventory (111) (349)
Prepaid expense and other current assets 169 255
Operating lease liabilities (12) (22)
Accounts payable 91 609
Accrued and other current liabilities (770) (566)
Deferred revenue (20) (21)
Net cash used in operating activities (6,293) (5,892)
Cash flows from investing activities:    
Purchase of property and equipment   (5)
Net cash used in investing activities   (5)
Cash flows from financing activities:    
Proceeds from issuance of common stock 5,749 2,961
Proceeds from issuance of warrants 3,692 4,829
Proceeds from exercise of warrants 3,734 163
Share issuance costs (1,212) (850)
Proceeds from issuance of notes payable 880  
Repayment of notes payable (1,560)  
Net cash provided by financing activities 11,283 7,103
Effect of currency exchange rate changes on cash and cash equivalents   (1)
Net increase in cash and cash equivalents 4,990 1,205
Cash and cash equivalents at beginning of period 1,088 5,182
Cash and cash equivalents at end of period 6,078 6,387
Non-cash investing and financing transactions:    
Derivative warrant liability reclassified to equity on exercise of warrants 9,527 101
Deferred offering costs reclassified to equity upon public offering 8 132
Share issuance costs included in accounts payable $ 330 $ 150