Statements Of Operations (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Revenue:
Systems	$ 1,334,854	$ 2,228,077
Disposables, service and accessories	7,019,816	6,180,127
Total revenue	8,354,670	8,408,204
Cost of revenue:
Systems	559,428	1,191,352
Disposables, service and accessories	1,059,658	1,001,293
Total cost of revenue	1,619,086	2,192,645
Gross margin	6,735,584	6,215,559
Operating expenses:
Research and development	1,503,446	1,529,207
Sales and marketing	3,631,264	4,856,014
General and administrative	3,829,866	3,423,741
Total operating expenses	8,964,576	9,808,962
Operating loss	(2,228,992)	(3,593,403)
Other income (expense)	(1,076,139)	606,102
Interest income	2,233	1,412
Interest expense	(836,950)	(1,934,258)
Net loss	$ (4,139,848)	$ (4,920,147)
Net loss per common share:
Basic	$ (0.21)	$ (0.61)
Diluted	$ (0.21)	$ (0.61)
Weighted average shares used in computing net loss per common share:
Basic	19,403,325	8,015,226
Diluted	19,403,325	8,015,226