Composition of Certain Consolidated Financial Statement Items (Tables)

9 Months Ended

Sep. 30, 2021

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Inventory

Inventory (in thousands):

	September 30,		December 31,
	2021		2020
Raw materials	$	4,602	$	2,647
Work-in-process	612		51
Finished goods	5,187		4,226
Total inventory	$	10,401	$	6,924

Prepaid Expenses and Other Current Assets

Prepaid Expenses and Other Current Assets (in thousands):

	September 30,		December 31,
	2021		2020
Inventory	$	310	$	553
Software	580		375
Rent	252		245
Insurance	447		124
Other	643		356
Total prepaid expenses and other current assets	$	2,232	$	1,653

Property and Equipment, net

Property and Equipment, Net (in thousands):

	September 30,		December 31,
	2021		2020
Laboratory, manufacturing and computer equipment and furniture	$	2,911	$	2,645
Rental equipment	821		1,247
Leasehold improvements	4,941		4,941
Evaluation units	3,492		4,229
Total property and equipment	12,165		13,062
Less: accumulated depreciation and amortization	(6,434)		(4,788)
Total property and equipment, net	$	5,731	$	8,274

Other Current Liabilities

Other Current Liabilities (in thousands):

	September 30,		December 31,
	2021		2020
Accrued purchases	$	134	$	432
Interest	390		403
Professional services	579		339
Sales tax	482		302
Clinical trial expenses	117		47
Other	1,132		454
Total other current liabilities	$	2,834	$	1,977

Schedule of Interest and Other Income (Expense), net

Interest and Other Income (Expense), net (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2021		2020		2021		2020
Interest income	$	22	$	23	$	49	$	161
Decrease (increase) in fair value of preferred stock warrants	16		142		78		233
Decrease (increase) in fair value of loan facility derivative liability	177		174		158		(41)
Other	(52)		18		(87)		(9)
Total interest and other income (expense), net	$	163	$	357	$	198	$	344