Note 2 - Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2025

Notes Tables

Schedule of Segment Reporting Information, by Segment [Table Text Block]

	For the Three Months Ended
	March 31,
	2025			2024
Revenues	$	143		$	82
Less:
Cost of revenues		11			5
Acquired in-process research and development expense		119			—
Depreciation and amortization expense		531			522
Stock-based compensation expense		91			6
Salaries and benefits expense		1,314			661
Professional fees		727			672
Research and development expense		103			37
Interest income		(18	)		(33	)
Interest expense		49			3
Change in fair value of royalties payable due to related parties		1,163			86
Income tax benefit		(724	)		—
Other segment items (1)		822			798
Segment net loss		(4,045	)		(2,675	)
Reconciliation of net loss
Adjustments and reconciling items		—			—
Consolidated net loss	$	(4,045	)	$	(2,675	)

Fair Value, by Balance Sheet Grouping [Table Text Block]

			March 31, 2025
	Total		Level 1		Level 2		Level 3
Assets:
Cash Equivalents
Mutual funds	$	420	$	420	$	—	$	—
Money market funds		13		13		—		—
Total assets	$	433	$	433	$	—	$	—
Liabilities:
Royalties payable due to related parties	$	10,376	$	—	$	—	$	10,376
Total liabilities	$	10,376	$	—	$	—	$	10,376

			December 31, 2024
	Total		Level 1		Level 2		Level 3
Assets:
Cash Equivalents
Mutual funds	$	2,803	$	2,803	$	—	$	—
Money market funds		12		12		—		—
Total assets	$	2,815	$	2,815	$	—	$	—
Liabilities:
Royalties payable due to related parties	$	9,213	$	—	$	—	$	9,213
Total liabilities	$	9,213	$	—	$	—	$	9,213

Schedule of Property, Plant and Equipment, Useful Life [Table Text Block]

Machinery and equipment	2 - 5 years
Computer hardware and software	1 - 5 years
LockeT animation video	3 years
VIVO DEMO/Clinical Systems	1-5 years

Disaggregation of Revenue [Table Text Block]

	For the Three Months Ended March 31,
	2025		2024
Product Sales
US	$	135	$	8
Europe		8		74

Royalties Payable [Member]

Notes Tables

Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]

	March 31, 2025
Instrument	Valuation Technique	Unobservable Input	Input Range
Royalties payable due to related parties	Discounted future cash flows	Revenue adjusted discount rate		21.0	%
	December 31, 2024
Instrument	Valuation Technique	Unobservable Input	Input Range
Royalties payable due to related parties	Discounted future cash flows	Revenue adjusted discount rate		22.5	%

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

	2025		2024
Beginning Balance at January 1,	$	9,213	$	6,974
Change in fair value of royalties payable due to related parties		1,163		86
Ending Balance at March 31,	$	10,376	$	7,060