Segment Information

12 Months Ended

Dec. 31, 2011

Segment Information [Abstract]

Segment Information

16. 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.

Geographic revenue is as follows:

	Year Ended December 31,
	2011		2010		2009
United States	$	23,947,048	$	28,840,803	$	22,309,477
International		18,040,384		25,210,434		28,840,078
Total	$	41,987,432	$	54,051,237	$	51,149,555

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.