Schedule of Accrued Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Payables and Accruals [Abstract]
Accrued salaries, bonus, and benefits	$ 899	$ 1,381
Accrued licenses and maintenance fees	484	484
Accrued warranties	155	163
Accrued taxes	75	47
Accrued investigational sites	85	101
Deferred contract obligations	1,045	1,045
Other	112	136
Total accrued liabilities	2,855	3,357
Less: Long term accrued liabilities	(51)	(51)
Total current accrued liabilities	$ 2,804	$ 3,306