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Organization consolidation and presentation of financial statements.

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Percentage of full time employees terminated.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

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The cash inflow associated with the amount received from entity's raising of capital via private rather than public placement.

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The cash inflow from issuance of rights to purchase common shares at predetermined price (usually issued together with corporate debt).

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The cumulative amount of the reporting entity's undistributed earnings or deficit.

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Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

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Price of a single share of a number of saleable stocks of a company.

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Description of the reverse stock split arrangement. Also provide the retroactive effect given by the reverse split that occurs after the balance sheet date but before the release of financial statements.

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Organization and Nature of Operations - Additional Information (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands					1 Months Ended			12 Months Ended
	Jan. 09, 2023	Sep. 20, 2022	Sep. 02, 2022	Jun. 06, 2022	Mar. 28, 2023	Sep. 30, 2022	Sep. 02, 2022	Dec. 31, 2022	Dec. 31, 2021	Oct. 03, 2022	Aug. 31, 2021
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Reverse stock split ratio, description		On September 20, 2022, the Company’s board of directors approved a reverse stock split ratio of 1-for-50 (the “Reverse Stock Split”).
Common stock, shares outstanding		68,200						2,161	140	1,400
One-time severance payments				$ 600		$ 900	$ 300	$ 910
Cash and cash equivalents								15,859	$ 15,045
Net cash used in operating activities								22,568	27,625
Accumulated deficit								205,137	$ 178,272
Accrued expenses related to merger with catheter								$ 7,500
Subsequent Event [Member] \| Private Placement [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Gross proceeds from private placement					$ 8,000
Subsequent Event [Member] \| Warrant Inducement Offer [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Gross proceeds from warrant repricing	$ 1,300
Subsequent Event [Member] \| Securities Purchase Agreement [Member] \| Private Placement [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Gross proceeds from private placement	$ 8,000
Board of Directors [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Percentage of full time employees terminated			20.00%
Maximum [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Average price per share											$ 0.20
Maximum [Member] \| Board of Directors [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Percentage of full time employees terminated				65.00%		85.00%