Organization and Description of Business (Details) - USD ($) $ / shares in Units, $ in Thousands				1 Months Ended		12 Months Ended
	Jan. 13, 2023	Jun. 30, 2022	Aug. 10, 2020	Nov. 30, 2022	Jul. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Subsidiary, Sale of Stock [Line Items]
Cash, cash equivalents, and short-term investments						$ 70,400	$ 107,900
Net loss						39,616	117,683
Net cash used in operating activities						85,032	99,682
Accumulated deficit						518,314	478,698
Working capital						98,000	107,800
Number of shares issued during the period (in shares)					6,325,000
Proceeds from issuance of common stock, net of issuance costs					$ 82,700	$ 0	$ 82,657
Disposal Group, Held-for-sale or Disposed of by Sale, Not Discontinued Operations | Left-Heart Access Portfolio
Subsidiary, Sale of Stock [Line Items]
Consideration received		$ 50,000		$ 20,000
Restricted cash, long-term		$ 4,000		$ 1,600
Indemnity escrow account term		18 months
Disposal Group, Held-for-sale or Disposed of by Sale, Not Discontinued Operations | Left-Heart Access Portfolio | Subsequent Event
Subsidiary, Sale of Stock [Line Items]
Consideration received	$ 17,000
IPO
Subsidiary, Sale of Stock [Line Items]
Proceeds from IPO			$ 166,300
Over-Allotment Option
Subsidiary, Sale of Stock [Line Items]
Number of shares issued during the period (in shares)					825,000
Price per share (in dollars per share)					$ 14.00
Public Stock Offering
Subsidiary, Sale of Stock [Line Items]
Sale of stock, consideration received on transaction					$ 88,600