Property and Equipment (Tables)

3 Months Ended

Mar. 31, 2019

Property Plant And Equipment [Abstract]

Summary of Property and Equipment

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

	March 31,			December 31,
	2019			2018
Furniture & fixtures	$	852,132		$	791,973
Leasehold improvements		1,936,495			1,930,300
Equipment used in manufacturing		2,298,377			2,297,797
Equipment used in research & development		1,456,954			1,456,954
Equipment used in the field		153,720			125,253
Software		373,683			373,683
Construction in progress		—			19,246
		7,071,361			6,995,206
Less: accumulated depreciation and amortization		(4,930,254	)		(4,621,416	)
	$	2,141,107		$	2,373,790