Schedule of Accrued Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Payables and Accruals [Abstract]
Accrued salaries, bonus, and benefits	$ 1,210	$ 1,222
Accrued licenses and maintenance fees	484	484
Accrued warranties	90	107	$ 163
Accrued professional services	109	138
Accrued investigational sites	182
Deferred contract obligation	1,045	1,045
Other	87	19
Total accrued liabilities	3,207	3,015
Less: Long term accrued liabilities	(43)	(43)
Total current accrued liabilities	$ 3,164	$ 2,972