Furniture, Fixtures and Equipment - Schedule of Furniture, Fixtures and Equipment (Details) - USD ($)	6 Months Ended
Jun. 30, 2019	Dec. 31, 2018
Office furniture, fixtures and equipment	$ 821,453	$ 802,681
Warehouse and production equipment	537,471	526,932
Demonstration and tradeshow equipment	466,394	426,582
Leasehold improvements	163,171	160,198
Rental equipment	126,163	124,553
Total cost	2,114,652	2,040,946
Less: accumulated depreciation and amortization	(1,931,677)	(1,793,405)
Net furniture, fixtures and equipment	$ 182,975	$ 247,541
Minimum [Member]
Estimated Useful Life	3 years
Maximum [Member]
Estimated Useful Life	10 years
Office Furniture, Fixtures and Equipment [Member] \| Minimum [Member]
Estimated Useful Life	3 years
Office Furniture, Fixtures and Equipment [Member] \| Maximum [Member]
Estimated Useful Life	10 years
Warehouse and Production Equipment [Member] \| Minimum [Member]
Estimated Useful Life	3 years
Warehouse and Production Equipment [Member] \| Maximum [Member]
Estimated Useful Life	5 years
Demonstration and Tradeshow Equipment [Member] \| Minimum [Member]
Estimated Useful Life	2 years
Demonstration and Tradeshow Equipment [Member] \| Maximum [Member]
Estimated Useful Life	5 years
Leasehold Improvements [Member] \| Minimum [Member]
Estimated Useful Life	2 years
Leasehold Improvements [Member] \| Maximum [Member]
Estimated Useful Life	5 years
Rental Equipment [Member] \| Minimum [Member]
Estimated Useful Life	1 year
Rental Equipment [Member] \| Maximum [Member]
Estimated Useful Life	3 years

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Rental Equipment Gross.

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation of equipment commonly used in offices and stores that have no permanent connection to the structure of a building or utilities. Examples include, but are not limited to, desks, chairs, tables, and bookcases.

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Amount before accumulated depreciation of additions or improvements to assets held under a lease arrangement.

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Amount before accumulated depreciation of tangible personal property used to produce goods and services, including, but is not limited to, tools, dies and molds, computer and office equipment.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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