| abstract |
A system for advancing in a body lumen including a guide member insertable into a body lumen, apparatus for providing a forward propulsion force on the guide member to advance the guide member distally into the body lumen, and a lumen formed through the guide member connected to a fluid source, wherein fluid flowing through and out of the lumen cleans the body lumen as the forward propulsion force propels the guide member distally in the body lumen. |