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Property and Equipment (Tables)
 12 Months Ended
Dec. 31, 2017
Property Plant And Equipment [Abstract]  
Summary of Property and Equipment

Property and equipment, net consists of the following:

 

 

 

December 31,

 

 

 

2017

 

 

2016

 

Furniture & fixtures

 

$

582,007

 

 

$

494,589

 

Leasehold improvements

 

 

1,863,698

 

 

 

1,847,378

 

Equipment used in manufacturing

 

 

1,963,558

 

 

 

1,395,651

 

Equipment used in research & development

 

 

1,328,556

 

 

 

1,121,676

 

Equipment used in the field

 

 

130,552

 

 

 

131,096

 

Software and intangible assets

 

 

373,683

 

 

 

245,736

 

Construction in progress

 

 

255,641

 

 

 

176,963

 

 

 

 

6,497,695

 

 

 

5,413,089

 

Less: accumulated depreciation and amortization

 

 

(3,192,805

)

 

 

(2,142,892

)

 

 

$

3,304,890

 

 

$

3,270,197