Segment Information

12 Months Ended

Dec. 31, 2012

Segment Information [Abstract]

Segment Information

18. Segment Information

The Company considers reporting segments in accordance with general accounting principles for disclosures about segments of an enterprise and related information. The Company’s system and disposable devices are developed and marketed to a broad base of hospitals in the United States and internationally. The Company considers all such sales to be part of a single operating segment.

	Year Ended December 31,
	2012		2011		2010
United States	$	27,034,200	$	23,947,048	$	28,840,803
International		19,528,234		18,040,384		25,210,434
Total	$	46,562,434	$	41,987,432	$	54,051,237

All of the Company’s long-lived assets are located in the United States. Revenues are attributed to countries based on the location of the customer.