Catheter Basics
Catheter Sizes
Catheters are sized by French size (Fr). The French size refers to the diameter of the catheter. Typically sizes range from 5 Fr - 20 Fr. You can tell the French size of the catheter by the color of its funnel end. See chart (Right) for funnel colors and French sizes. Your physician will determine which catheter French size is right for you.
Catheter Lengths
There are three different lengths available for catheters: male, female, and pediatric. Most
male length catheters are 16 inches in length, and
female length catheters range from 6-8 inches in length. There are some instances where females prefer to use male-length catheters.
Pediatric length catheters typically range from 6-12 inches in length.
Catheter Tips
Catheters can have a straight tip or a coude tip. Most catheters come with a straight tip but sometimes a coude tip is recommended by your physician. The coude tip catheter (shown below) is used when a blockage or stricture is present, making the use of a straight catheter more difficult.
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Note: Always consult with your physician or other health care provider on what type of catheter is right for you.