Delaware	001-35312	No. 68-0533453
(State or Other Jurisdiction of Incorporation or Organization)	(Commission File Number)	(I.R.S. Employer Identification No.)

		Three months ended March 31,
		2019				2018
Net sales		$	1,215			$	1,037
Costs and Expenses:
Cost of goods sold			612				901
Selling, general and administrative			4,018				4,011
Research and development			1,310				479
Total costs and expenses			5,940				5,391
Loss from operations			(4,725	)			(4,354	)
Loss before income taxes			(4,725	)			(4,354	)
Income tax expense			(2	)			—
Net loss		$	(4,727	)		$	(4,354	)
Basic and diluted loss per share		$	(11.47	)		$	(15.12	)
Weighted average shares outstanding – basic and diluted			805				288
Other comprehensive income:
Foreign currency translation adjustments		$	(2	)		$	1
Total comprehensive loss		$	(4,729	)		$	(4,353	)

		March 31, 2019				December 31, 2018
ASSETS		(unaudited)
Current assets
Cash and cash equivalents		$	11,489			$	5,480
Accounts receivable			622				786
Inventory			1,790				1,658
Other current assets			350				203
Total current assets			14,251				8,127
Property, plant and equipment, net			518				536
Operating lease right-of-use asset			574				—
Other assets			20				113
TOTAL ASSETS		$	15,363			$	8,776
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities
Accounts payable		$	1,202			$	1,133
Accrued compensation			831				1,498
Current portion of operating lease liability			171				—
Other current liabilities			228				209
Total current liabilities			2,432				2,840
Operating lease liability			403				-
Total liabilities			2,835				2,840
Commitments and contingencies			—				—
Stockholders’ equity
Series A junior participating preferred stock as of March 31, 2019 and December 31, 2018, par value $0.0001 per share; authorized 30,000 shares, none outstanding			—				—
Series F convertible preferred stock as of March 31, 2019 and December 31, 2018, par value $0.0001 per share; authorized 535 and 535 shares, respectively, issued and outstanding 535 and 535, respectively			—				—
Series G convertible preferred stock as of March 31, 2019 and December 31, 2018, par value $0.0001 per share; authorized 810,142 and 0 shares, respectively, issued and outstanding 810,142 and 0, respectively
Preferred stock as of March 31, 2019 and December 31, 2018, par value $0.0001 per share; authorized 39,159,323 and 39,969,465 shares, none outstanding			—				—
Common stock as of March 31, 2019 and December 31, 2018, par value $0.0001 per share; authorized 100,000,000 shares, issued and outstanding 2,069,020 and 513,445, respectively			—				—
Additional paid‑in capital			215,422				204,101
Accumulated other comprehensive income:
Foreign currency translation adjustment			1,221				1,223
Accumulated deficit			(204,115	)			(199,388	)
Total stockholders’ equity			12,528				5,936
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY		$	15,363			$	8,776

		Outstanding Shares of Common Stock				Common Stock				Additional Paid in Capital				Accumulated Other Comprehensive Income				Accumulated Deficit				Stockholders’ Equity
Balance December 31, 2017			271,357			$	—			$	197,367			$	1,227			$	(182,356	)		$	16,238
Net loss			—				—				—				—				(4,354	)			(4,354	)
Foreign currency translation adjustment			—				—				—				1				—				1
Stock-based compensation and stock awards, net			3				—				501				—				—				501
Conversion of preferred stock into common stock			32,365				—				—				—				—				—
Balance March 31, 2018			303,725			$	—			$	197,868			$	1,228			$	(186,710	)		$	12,386

		Outstanding Shares of Common Stock				Common Stock				Additional Paid in Capital				Accumulated Other Comprehensive Income				Accumulated Deficit				Stockholders’ Equity
Balance December 31, 2018			513,445			$	—			$	204,101			$	1,223			$	(199,388	)		$	5,936
Net loss			—				—				—				—				(4,727	)			(4,727	)
Foreign currency translation adjustment			—				—				—				(2	)			—				(2	)
Stock-based compensation, net			3				—				362				—				—				362
Issuance of common and preferred stock, net			455,178				—				10,959				—				—				10,959
Conversion of preferred stock into common stock			1,100,394				—				—				—				—				—
Balance March 31, 2019			2,069,020			$	—			$	215,422			$	1,221			$	(204,115	)		$	12,528

		Three months ended March 31,
		2019				2018
Operating Activities:
Net loss		$	(4,727	)		$	(4,354	)
Adjustments to reconcile net loss to cash flows used in operating activities:
Depreciation and amortization			59				54
Stock-based compensation expense, net			362				500
Changes in operating assets and liabilities:
Accounts receivable			164				(113	)
Inventory			(132	)			(937	)
Other current assets			(147	)			6
Other assets and liabilities			112				—
Accounts payable and accrued expenses			(598	)			(192	)
Net cash used in operating activities			(4,907	)			(5,036	)
Investing Activities:
Purchases of property and equipment			(41	)			(57	)
Net cash used in investing activities			(41	)			(57	)
Financing Activities:
Net proceeds from public stock offering, net			10,959				—
Net cash provided by financing activities			10,959				—
Effect of exchange rate changes on cash			(2	)			2
Net increase (decrease) in cash and cash equivalents			6,009				(5,091	)
Cash and cash equivalents - beginning of period			5,480				15,595
Cash and cash equivalents - end of period		$	11,489			$	10,504
Supplemental cash flow information
Cash paid for income taxes		$	—			$	—