Spat mum’s chop out — no need for these? (7,5)

I believe the answer is:

stomach pumps

I'm a little stuck... Click here to teach me more about this clue!

'no need for these?' is the definition.
I don't know anything about this answer so I cannot tell whether this works.

'spat mum's chop out' is the wordplay.
'out' indicates an anagram (out can mean wrong or inaccurate).
'spat'+'mums'+'chop'='spatmumschop'
'spatmumschop' anagrammed gives 'STOMACH-PUMPS'.

Can you help me to learn more?

(Another definition for stomach pumps that I've seen is " Evacuators".)

I've seen this clue in The Times.

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