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Notes receivable from Seastar Medical Holdings Corporation - Additional Information (Details) - USD ($)	Oct. 28, 2022	Dec. 31, 2022	Nov. 02, 2022	Sep. 09, 2022	Jul. 29, 2022	Jul. 28, 2022	Jun. 30, 2022	Feb. 01, 2022	Dec. 31, 2021
Accounts Notes And Loans Receivable [Line Items]
Debt instrument principal amount		$ 475,775
Share price		$ 0.001							$ 0.001
Debt instrument, maturity date	Oct. 30, 2023
Debt Instrument Interest Rate Stated Percentage	7.00%
Seastar Medical Holding Corporation [Member] \| Note receivable
Accounts Notes And Loans Receivable [Line Items]
Agreed amount of advances		$ 268,000	$ 268,000						$ 0
Receivable from related party		12,000							0
Credit Agreement [Member] \| Seastar Medical Holding Corporation [Member]
Accounts Notes And Loans Receivable [Line Items]
Accrued interest income		19,000							$ 0
Percentage of interest rate on advances	7.00%			15.00%
Investment maturity date	Oct. 30, 2023
Amount loaned under credit agreement		700,000
Credit Agreement [Member] \| Maximum [Member] \| Seastar Medical Holding Corporation [Member]
Accounts Notes And Loans Receivable [Line Items]
Agreed amount of advances				$ 700,000
LMF Acquisition Opportunities Inc [Member] \| Class A Common Stock [Member]
Accounts Notes And Loans Receivable [Line Items]
Share price	$ 0.0001				$ 0.10
Unsecured Promissory Note [Member]
Accounts Notes And Loans Receivable [Line Items]
Debt instrument principal amount						$ 1,750,000		$ 500,000
Unsecured Promissory Note [Member] \| LMF Acquisition Opportunities Inc [Member]
Accounts Notes And Loans Receivable [Line Items]
Aggregate amount deposited in trust account					$ 1,035,000
Principal amount of notes receivable					$ 1,035,000
Original Sponsor Notes [Member] \| LMF Acquisition Opportunities Inc [Member]
Accounts Notes And Loans Receivable [Line Items]
Principal amount of notes receivable							$ 1,750,000
Sponsor Notes [Member] \| Seastar Medical Holding Corporation [Member]
Accounts Notes And Loans Receivable [Line Items]
Principal amount of notes receivable		2,785,000
Accrued interest income		$ 35,000
Sponsor Notes [Member] \| LMF Acquisition Opportunities Inc [Member]
Accounts Notes And Loans Receivable [Line Items]
Principal amount of notes receivable	$ 2,785,000