A 81-year-old female asked:
there are different sizes for the inner canula. what do the different sizes mean ?
1 doctor answer
Dr. Louise Andrew answered
45 years experience Emergency Medicine
Odd question!: If you are referring to a needle type cannula, it just means the inside diameter of the tube compared to the outside diameter. If you meant some body part, please be sure you are spelling it correctly!
Answered on Dec 15, 2015
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