IPA: /ɪnˈsʌf.leɪ.tər/
KK: /ɪnˈsʌf.leɪ.tər/
A device or person that blows air or gas into a body cavity or space, often used in medical procedures.
The doctor used an insufflator to expand the patient's abdomen for better visibility during surgery.
Insufflator is formed from "in-" (meaning into) and "sufflare" (meaning to blow). The word refers to a device that blows air or gas into a body cavity or space.
Think of blowing air 'into' ('in-') something — that's what an insufflator does.
No commonly confused words.