Note 5 - Advances on Contracts

3 Months Ended

Mar. 31, 2021

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

March 31, 2021

and

December 31, 2020

is approximately

$753,000

 and

$414,000,

 respectively. The advance is classified as current based on the estimated annual usage of the underlying inventory.