I heard about a catheter used rectally to administer medication. What can you tell me about this? I think you are referring to the Macy Catheter. It is a catheter that is inserted rectally to ...

Medical catheters are tubes that can be inserted into a body cavity, vessel or duct, usually to allow for the administration of fluids, medications or gases or to drain fluids or urine from the body.

Intraosseous catheterization may be used to administer fluids or medications to small mammals, particularly when intravenous access cannot be established. This column describes the necessary equipment ...