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Property and Equipment, Net
 12 Months Ended
Dec. 31, 2021
Property Plant And Equipment [Abstract]  
Property and Equipment, Net

6.

Property and Equipment, Net

Property and equipment, net consisted of the following (in thousands):

 

 

 

December 31,

 

 

 

2021

 

 

2020

 

Manufacturing equipment

 

$

1,769

 

 

$

1,725

 

OCS Consoles loaned to customers

 

 

8,865

 

 

 

7,196

 

Computer equipment and software

 

 

1,511

 

 

 

1,338

 

Laboratory equipment

 

 

668

 

 

 

617

 

Office and trade show equipment

 

 

177

 

 

 

177

 

Leasehold improvements

 

 

1,319

 

 

 

1,319

 

Construction-in-progress

 

 

5,267

 

 

 

409

 

 

 

 

19,576

 

 

 

12,781

 

Less: Accumulated depreciation and amortization

 

 

(9,735

)

 

 

(8,027

)

 

 

$

9,841

 

 

$

4,754

 

 

During the years ended December 31, 2021 and 2020, total depreciation and amortization expense was $1.8 million and $1.6 million, respectively. Of those amounts, $1.4 million and $1.3 million, respectively, was recorded as expense in cost of revenue related to the depreciation of OCS Consoles loaned to customers. The Company retains title to OCS Consoles loaned to customers.

Construction-in-progress recorded as of December 31, 2021 and 2020 was primarily related to leasehold improvements and in-process construction of manufacturing equipment, respectively.