The most common and most likely answer to this crossword clue is the 9 letter word ENDOSCOPE
I've seen this crossword clue in Independent
E
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D
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More clues leading to the result ENDOSCOPE
- Exploratory device to conclude very big deal
- Manage to support extremity with large medical device
- Unwelcome camera close, having zero range
- Death thus returning, manage to find private investigator?
- Hacks need scoop which gives an intrusive view of someone
- Terminus very large to manage – this allows an internal review
- Probe ball into goal area
- Support taking away right to imprison the policeman with a medical instrument
- Probing camera with exposed lens bashes bear
Buddy explains!

The straight part
We know that "Unwelcome camera" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case unwelcome camera = endoscope.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does ENDOSCOPE mean?
ENDOSCOPE noun- An instrument used to examine a bodily orifice or canal, or a hollow organ.