Statements Of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Cash flows from operating activities
Net loss	$ (7,352,775)	$ (5,202,441)
Adjustments to reconcile net loss to cash used in operating activities:
Depreciation	320,301	413,773
Amortization of intangibles	299,833	299,833
Amortization of deferred finance costs	222,682	240,601
Share-based compensation	1,312,319	1,501,045
Impairment of intangible asset	443,931
Loss on asset disposal	5,883
Adjustment of warrants	(1,340,057)	(3,510,439)
Changes in operating assets and liabilities:
Accounts receivable	104,029	1,098,084
Inventories	1,521,995	(1,492,864)
Prepaid expenses and other current assets	86,944	144,518
Other assets	124,691	110,763
Accounts payable	(512,998)	(1,159,206)
Accrued liabilities	798,696	(1,634,850)
Deferred revenue	1,820,798	(376,499)
Other liabilities	(384,773)	475,539
Net cash used in operating activities	(2,528,501)	(9,092,143)
Cash flows from investing activities
Purchase of equipment	(153,151)	(123,912)
Net cash used in investing activities	(153,151)	(123,912)
Cash flows from financing activities
Proceeds (payments) from Healthcare Royalty Partners debt	40,413	(142,447)
Proceeds from issuance of stock and warrants, net of issuance costs	964,520	2,853,673
Net cash provided by financing activities	1,004,933	2,711,226
Net increase (decrease) in cash and cash equivalents	(1,676,719)	(6,504,829)
Cash and cash equivalents at beginning of period	7,270,301	13,775,130
Cash and cash equivalents at end of period	5,593,582	7,270,301
Supplemental disclosures of cash flow information:
Interest paid	$ 2,974,345	$ 3,028,884