Catheters, Drains and Tubes

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There are many types of drains, tubes and catheters used in surgery.   These next few pages will outline many of these and their major uses.


Catheters are used for evacuating or injecting fluids.  Catheters are sized on a French scale according to the diameter of the lumen.  The smallest diameter on this scale is 3 French.


Drains and tubes are devices used to drain fluid from the body when excessive drainage is expected.  A drain or tube is often placed in a separate small incision site known as a stab wound, close to the operative site.


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Last updated 12/05/06.
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