Statements Of Operations - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Revenue:
Systems	$ 2,298,608	$ 2,181,088	$ 8,222,722	$ 4,669,224
Disposables, service and accessories	6,976,006	6,673,013	20,247,169	20,587,084
Total revenue	9,274,614	8,854,101	28,469,891	25,256,308
Cost of revenue:
Systems	1,286,849	1,318,456	4,536,391	2,958,668
Disposables, service and accessories	1,159,547	1,019,476	3,483,906	2,983,111
Total cost of revenue	2,446,396	2,337,932	8,020,297	5,941,779
Gross margin	6,828,218	6,516,169	20,449,594	19,314,529
Operating expenses:
Research and development	1,494,201	1,214,405	4,399,734	4,030,594
Sales and marketing	3,691,805	3,717,670	11,976,955	11,445,089
General and administrative	2,549,690	2,763,667	8,116,989	9,537,043
Total operating expenses	7,735,696	7,695,742	24,493,678	25,012,726
Operating loss	(907,478)	(1,179,573)	(4,044,084)	(5,698,197)
Other income	725,356	2,034,731	832,148	2,139,718
Interest income	267	1,736	1,622	5,665
Interest expense	(815,071)	(834,224)	(2,460,881)	(2,505,842)
Net income (loss)	$ (996,926)	$ 22,670	$ (5,671,195)	$ (6,058,656)
Net earnings (loss) per common share:
Basic	$ (0.05)	$ 0.00	$ (0.27)	$ (0.31)
Diluted	$ (0.05)	$ 0.00	$ (0.27)	$ (0.31)
Weighted average shares used in computing net earnings (loss) per common share:
Basic	21,142,795	20,326,169	20,965,012	19,767,545
Diluted	21,142,795	20,518,757	20,965,012	19,767,545