Segment Reporting (Tables)

9 Months Ended

12 Months Ended

Sep. 30, 2025

Dec. 31, 2024

Segment Reporting [Abstract]

Schedule of Significant Expense Categories Regularly Reviewed by CODM

The following table summarizes the significant expense categories regularly reviewed by the CODM for the three and nine months ended September 30, 2025 and 2024. 

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2025			2024			2025			2024
Net revenues	$	42		$	56		$	166		$	183
Costs and operating expenses:
Cost of goods sold		203			187			663			585
Research and development		2,700			2,757			7,933			7,708
Sales and marketing		405			394			1,124			1,216
General and administrative		2,442			1,690			6,331			5,381
Total costs and operating expenses		5,750			5,028			16,051			14,890
Operating loss		(5,708	)		(4,972	)		(15,885	)		(14,707	)
Other income (expense):
Other segment items1		(308	)		(737	)		312			(1,028	)
Interest expense, related party		(471	)		(264	)		(1,590	)		(432	)
Other income (expense), net		5			13			(7	)		(10	)
Total other income (expense), net		(774	)		(988	)		(1,285	)		(1,470	)
Net loss	$	(6,482	)	$	(5,960	)	$	(17,170	)	$	(16,177	)

⁽¹⁾ Other segment items include the change in fair value of forward purchase agreement put option liability, change in fair value of forward purchase agreement warrant liability, change in fair value of private warrant liability and change in fair value of publicly traded warrant liability.

The following table summarizes the significant expense categories regularly reviewed by the CODM for the years ended December 31, 2024 and 2023. 

	Year ended December 31,
	2024			2023
Net revenues	$	225		$	316
Costs and operating expenses:
Cost of goods sold		742			789
Research and development		10,179			8,956
Sales and marketing		1,734			1,666
General and administrative		6,826			7,264
Total costs and operating expenses		19,481			18,675
Operating loss		(19,256	)		(18,359	)
Other segment items(1)		(697	)		(11,617	)
Interest expense, related party		(816	)		—
Other income		(26	)		54
Total other expense, net		(1,539	)		(11,563	)
Net loss	$	(20,795	)	$	(29,922	)

⁽¹⁾ Other segment items include the change in fair value of convertible notes payable (related party), change in fair value of forward purchase agreement put option liability, change in fair value of forward purchase agreement warrant liability, change in fair value of forward purchase agreement warrant liability due to modification, and change in fair value of publicly traded warrant liability.