Russ opens out a bandage (9)

I believe the answer is:

suspensor

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'a bandage' is the definition.
Both the definition and answer are singular nouns.
Maybe you can see a link between them that I can't see?

'russ opens out' is the wordplay.
'out' is an anagram indicator (out can mean wrong or inaccurate).
'russ'+'opens'='russopens'
'russopens' anagrammed gives 'SUSPENSOR'.

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.

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