Catheter assembly

Claim 1

A bladder and kidney drainage system comprising: a bladder catheter assembly comprising a flexible outer tube including within it a plurality of flexible lumens, one of said lumens having a retention balloon at one end, and at least one lumen comprising a drainage tube having an entrance end adjacent to said retention balloon and having an opposite, drainage, end; at least one ureteral catheter comprising a smaller tube than said drainage tube of said bladder catheter assembly, and means for supporting said ureteral catheter on said bladder catheter assembly; a separate and disconnectable combining chamber comprising: a generally straight passageway having an entrance opening at one end removably connected to said drainage end of said drainage tube, a single drainage exit comprising a tubular region at an opposite end, and a central region there between, a pair of tubular coupling members extending outward from sides of said central region, the direction of extension of each having a directional component in the direction of the location of said entrance opening, whereby, with the entrance opening of said central chamber in an upper position, flow through said tubular coupling member enters said central region by virtue of gravity, a threaded coupling end region on the end of each said tubular coupling member, and coupling means including a ferrule adapted to surround an end region of a said tube of said ureteral catheter, and a collar adapted to fit around said last-named tube and over said ferrule, and having a threaded interior region adapted to thread onto said threaded coupling end region of said tubular coupling member, and thereby clamp together said last-named tube and said combining chamber; a drainage bag; a single elongated drain tube having an entrance end and an exit end, and said exit end being connected to said drainage bag, and having an enlarged tapered said entrance end; and a coupling sleeve slidably coupled over said enlarged tapered entrance end of said drain tube and over said tubular region of said combining chamber.