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Summary of Significant Accounting Policies (Details Narrative) - USD ($) $ in Thousands |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jan. 09, 2023 | Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Summary of Significant Accounting Policies |  |  |  |
Impairment charges |  | $ 0 | $ 56,100 |
Deemed dividend amount for existing warrants and issuance of new warrants |  |  | 800 |
Excess of federally insured limits of $250,000 |  | $ 1,200 |  |
Royalty liability description |  | The Company will pay to the Noteholders a total royalty equal to approximately 12% of net sales of LockeT, commencing upon the first commercial sale, through December 31, 2035 |  |
Royalty liability description addition |  | Old Catheter had entered into an agreement with the inventor of LockeT in exchange for the assignment and all rights to LockeT. Pursuant to the agreement, the Company will pay a 5% royalty on net sales up to $1 million in royalties. After $1 million has been paid, and if, and only if, a U.S. patent is granted by the United States Patent and Trademark Office, then the Company will continue to pay a royalty at a rate of 2% of LockeT net sales, until total cumulative royalties of $10 million have been paid |  |
Royalty liability fair value |  | $ 7,000 |  | $ 7,000
Discount rate | 24.10% | 29.00% |  | 28.00%
Advertising and marketing |  | $ 49 | $ 18 |
Royalties | $ 14,200 |  |  |

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