Property and Equipment

6 Months Ended

Jun. 30, 2018

Property Plant And Equipment [Abstract]

Property and Equipment

Note 6. Property and Equipment

Property and equipment, net, consists of the following as of the dates indicated:

	June 30,			December 31,
	2018			2017
Furniture & fixtures	$	686,349		$	582,007
Leasehold improvements		1,895,216			1,863,698
Equipment used in manufacturing		2,147,331			1,963,558
Equipment used in research & development		1,456,954			1,328,556
Equipment used in the field		130,552			130,552
Software		373,683			373,683
Construction in progress		158,211			255,641
		6,848,296			6,497,695
Less: accumulated depreciation and amortization		(3,959,301	)		(3,192,805	)
	$	2,888,995		$	3,304,890

Depreciation and leasehold improvement amortization expense was $422,140 and $778,344 for the three and six months ended June 30, 2018, respectively, and $291,421and $587,466 for the three and six months ended June 30, 2017, respectively.