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Note 5 - Advances on Contracts	3 Months Ended
Mar. 31, 2022
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, 2022, and December 31, 2021 is approximately $1.2 million and $1.3 million, respectively. The advance is classified as current based on the estimated annual usage of the underlying inventory.

Note 5 - Advances on Contracts

3 Months Ended

Mar. 31, 2022

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, 2022, and December 31, 2021 is approximately $1.2 million and $1.3 million, respectively. The advance is classified as current based on the estimated annual usage of the underlying inventory.