Statements Of Operations (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Revenue:
Systems	$ 2,228,077	$ 5,179,505
Disposables, service and accessories	6,180,127	7,103,723
Total revenue	8,408,204	12,283,228
Cost of revenue:
Systems	1,191,352	2,342,410
Disposables, service and accessories	1,001,293	1,419,421
Total cost of revenue	2,192,645	3,761,831
Gross margin	6,215,559	8,521,397
Operating expenses:
Research and development	1,529,207	2,825,207
Sales and marketing	4,856,014	5,998,739
General and administrative	3,423,741	3,872,873
Total operating expenses	9,808,962	12,696,819
Operating loss	(3,593,403)	(4,175,422)
Other income (expense)	606,102	(188,070)
Interest income	1,412	1,363
Interest expense	(1,934,258)	(1,450,783)
Net loss	$ (4,920,147)	$ (5,812,912)
Net earnings (loss) per common share:
Basic	$ (0.61)	$ (1.06)
Diluted	$ (0.61)	$ (1.06)
Weighted average shares used in computing net earnings (loss) per common share:
Basic	8,015,226	5,499,316
Diluted	8,015,226	5,499,316