
1) Medical devices
Found on
https://www.crosswordclues.com/clue/catheters

A catheter is a tube that is inserted into a hollow organ of the body in order to drain or introduce fluids. A urinary catheter is inserted into the bladder through the urethra to relieve obstruction to the flow of urine. Cardiac catheters are used to measure blood pressure in the heart. Similar catheters are used to inject radio- opaque substances...
Found on
http://www.probertencyclopaedia.com/browse/EC.HTM
No exact match found.