Note 13 - Commitments (Details Textual)			1 Months Ended	6 Months Ended
	Feb. 25, 2021	Jan. 01, 2005	Aug. 31, 2019 USD ($)	Jun. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)
Advances on Inventory Purchases				$ 1,630,857	$ 1,309,260
Lease, Right-of-Use Asset				530,999	550,511
Lease, Liability				518,408	577,981
Lease, Liability, Current				86,228	81,001
Lease, Liability, Noncurrent				432,180	476,980
Finance Lease, Liability, Total				24,433	28,607
Finance Lease, Liability, Current				8,946	8,545
Finance Lease, Liability, Noncurrent				$ 15,487	20,062
Additional Percentage of Director Compensation on Sales Value Using Certain Specify Technology		2.50%
Additional Percentage of Director Compensation Sales Value Using Other Kind of Technology	2.50%	5.00%
Office Lease for Headquarter in Livingston, New Jersey [Member]
Lessee, Operating Lease, Term of Contract (Year)			7 years
Lessee, Operating Lease, Electric Charge Per Square Foot			$ 2.00
Lessee, Operating Lease, Electric Payments, Annually			11,130
Office Lease for Headquarter in Livingston, New Jersey [Member] | Minimum [Member]
Operating Leases, Monthly Rent Expense			9,275
Office Lease for Headquarter in Livingston, New Jersey [Member] | Maximum [Member]
Operating Leases, Monthly Rent Expense			$ 10,898
Purchase Commitment for Devices [Member]
Purchase Commitment Number Of Units				2,950
Purchase Commitment, Remaining Minimum Amount Committed				$ 2,400,000	2,600,000
Advances on Inventory Purchases				1,600,000	1,300,000
Purchase Commitment For Epidural Instrument [Member]
Purchase Commitment, Remaining Minimum Amount Committed				$ 41,000	$ 34,000