Statements Of Cash Flows - USD ($)	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash flows from operating activities
Net loss	$ (5,671,195)	$ (6,058,656)
Adjustments to reconcile net loss to cash used in operating activities:
Depreciation	223,430	334,908
Amortization of intangibles	224,875	224,875
Amortization of deferred finance costs	166,850	183,568
Share-based compensation	887,087	1,070,049
Adjustment of warrants	(832,148)	(2,139,718)
Changes in operating assets and liabilities:
Accounts receivable	(118,168)	550,802
Inventories	893,745	(1,707,264)
Prepaid expenses and other current assets	167,242	326,517
Other assets	93,950	2,783
Accounts payable	(30,047)	(1,007,184)
Accrued liabilities	537,375	(552,771)
Deferred revenue	(374,441)	979,121
Other liabilities	(409,339)
Net cash used in operating activities	(4,240,784)	(7,792,970)
Cash flows from investing activities
Purchase of equipment	(59,768)	(47,640)
Net cash used in investing activities	(59,768)	(47,640)
Cash flows from financing activities
Payments of Healthcare Royalty Partners debt	(105,272)	(95,368)
Proceeds from issuance of stock, net of issuance costs	753,992	2,885,243
Net cash provided by financing activities	648,720	2,789,875
Net decrease in cash and cash equivalents	(3,651,832)	(5,050,735)
Cash and cash equivalents at beginning of period	7,270,301	13,775,130
Cash and cash equivalents at end of period	$ 3,618,469	$ 8,724,395