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Commitments and Contingencies - Additional Information (Details) - USD ($)
 3 Months Ended 12 Months Ended
Mar. 31, 2022
Jan. 08, 2021
Mar. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Jul. 01, 2023
Mar. 31, 2023
Recorded Unconditional Purchase Obligation [Line Items]              
Operating leases expiry year     2025 2025      
Lease liability       $ 205,000      
Operating lease right-use-of assets     $ 171,000 $ 202,000 $ 248,000    
Operating lease, weighted average discount rate       10.67%      
Operating lease, weighted average remaining term       1 year 7 months 6 days      
Rent expense       $ 200,000 200,000    
Lorem Vascular Pte Ltd [Member]              
Recorded Unconditional Purchase Obligation [Line Items]              
Litigation settlement, expense         $ 1,400,000    
Pre-clinical Research Study Obligations [Member]              
Recorded Unconditional Purchase Obligation [Line Items]              
Contractual obligation     $ 0 $ 0      
Charlottesville [Member]              
Recorded Unconditional Purchase Obligation [Line Items]              
Lessee, operating lease, term of contract     12 months 12 months      
Lessee, operating lease, existence of option to extend [true false]     true true      
Lessee, operating lease, option to extend     The Charlottesville Lease has a term of 12 months and the Company has the ability to renew for three additional one-year periods. The Charlottesville Lease has a term of 12 months and the Company has the ability to renew for three additional one-year periods.      
Lessee, operating lease, renewal term     1 year 1 year      
Lease liability             $ 80,000
Operating lease discount rate           13.47% 12.76%
Operating lease right-use-of assets           $ 19,000  
Operating leases, expiration date       Mar. 31, 2024      
Medidata Solutions, Inc. [Member] | Services Agreement [Member]              
Recorded Unconditional Purchase Obligation [Line Items]              
Sales order term 6 months            
Piramal Pharma Solutions, Inc. [Member]              
Recorded Unconditional Purchase Obligation [Line Items]              
Master service agreement date   Jan. 08, 2021          
Master services agreement initial term   5 years          
Master services agreement terms, Description     The MSA has a term of five years and will automatically renew for successive one-year terms unless either party notifies the other no later than six months prior to the original term or any additional terms of its intention to not renew the MSA. The Company has the right to terminate the MSA for convenience upon thirty days’ prior written notice. The MSA has a term of five years and will automatically renew for successive one-year terms unless either party notifies the other no later than six months prior to the original term or any additional terms of its intention to not renew the MSA. The Company has the right to terminate the MSA for convenience upon thirty days’ prior written notice.