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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