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Note 5 - Advances on Contracts
9 Months Ended
Sep. 30, 2020
Notes to Financial Statements  
Advances to Contract Manufacturer [Text Block]
NOTE
5
 — ADVANCES ON CONTRACTS
 
The advances on contracts represent funding of future STA inventory purchases, epidural instruments, and epidural replacements parts. The balance of the advances as of
September 30, 2020
and
December 31, 2019
is approximately 
$723,000
and
$710,000,
respectively. The advance is classified as current based on the estimated annual usage of the underlying inventory.