Nature of Business and Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2021

Nature of Business and Significant Accounting Policies [Abstract]

Inventories

Inventories consisted of the following as of December 31:

	2021		2020
Finished Goods	$	1,409	$	1,343
Work in Process		276		342
Raw Materials		1,158		1,272
Total	$	2,843	$	2,957

Estimated Useful Lives

Depreciation expense has been calculated using the following estimated useful lives:

Production Equipment	3-7 years
Office Furniture and Fixtures	3-5 years
Computer Software and Equipment	3-4 years
Loaners and demo equipment	1-5 years
Leasehold improvements	3-5 years

Potential Shares of Common Stock not Included in Diluted Net Loss Per Share

The following table sets forth the potential shares of common stock that are not included in the calculation of diluted net loss per share because to do so would be anti-dilutive as of the end of each year presented:

	December 31,
	2021		2020
Stock options		754,525		16,889
Warrants to purchase common stock		1,631,798		1,631,948
Series F convertible preferred stock		50,800		14,224
Total		2,437,123		1,663,061

Reconciles Reported Net Loss with Reported Net Loss Per Share

The following table reconciles reported net loss with reported net loss per share for the years ended December 31:

(in thousands, except per share amounts)	2021			2020
Net loss	$	(19,578	)	$	(15,836	)
Deemed dividend to preferred stockholders (see Note 4)		(75	)		(1,757	)
Net loss after deemed dividend		(19,653	)		(17,593	)
Weighted average shares outstanding		6,852			1,649
Basic and diluted loss per share	$	(2.87	)	$	(10.67	)