Assertion: catheter's lumen | /r/CapableOf | reduce the number of necessary lumens
Facets:
Source sentences:
text: The second form of the invention provides a catheter tube wherein a multi-purpose lumen commonly serves to accommodate a visualizing or therapeutic instrument such as an optical fiber bundle, to channel a fluid such as a clear liquid, and to channel a balloon inflating fluid, reducing the number of necessary lumens, thus allowing the catheter tube to be reduced in diameter.