External male urinary catheter and collection system

Claim 1

An external male urinary catheter and collection system, comprising a generally tubular hollow body member having a distal closed end and a proximal open end for accommodating a portion of the male penis interiorly thereof, a flexible thin-walled sleeve-like sealing member integrally extending from said proximal open end of said body member and oriented in concentric axial alignment therewith, said sleeve-like sealing member having a wall thickness substantially less than the wall thickness of said body member and adopted to be rolled up over the open end of the adjacent portion of said body member to permit insertion of the distal end of the male penis therein, said sleeve-like sealing member having a predetermined substantially constant inner circumferential dimension selected for permitting said sealing member to snugly contact the exterior surface of the non-erect penile shaft when returned to the unrolled extended position, ambulatory evacuation means that is self-contained and independently operable for producing a negative pressure therein and capable of receiving and collecting urine interiorly thereof, a drainage tube interconnecting the distal end of said body member and said evacuation means for providing fluid communication therebetween and permitting drainage of urine from said body member interior to said evacuation means for collection, first one-way valve means cooperating with said drainage tube for permitting fluid flow through said drainage tube only in the direction from said body member to said evacuation means, said negative pressure from said evacuation means being communicated through said drainage tube and first one-way valve means into the interior of said body member for cooperating with the inserted male penis for permitting it to expand to its anatomic limit in a simulation of an erection into the interior of said body member, said negative pressure introduced within said body member further acting on said thin-walled sleeve-like sealing member for collapsing said thin walls about a non-erect portion of the penile shaft and maintaining an air-tight seal therewith but not engaging the non-erect penile shaft tightly enough to restrict venous blood flow therein, a second tube interconnecting the distal end of said body member and said evacuation means and said second tube communicating with said drainage tube through the interior of said body member, a second one-way valve means cooperating with said second tube for permitting air flow therethrough only in the direction from said evacuation means to said body member, and wherein said second tube and second one-way valve means cooperate with said evacuation means and body member for permitting an intermittent displacement of air therethrough from said evacuation means into said body member interior in response to the intermittent drainage of urine into said evacuation means through said drainage tube and first one-way valve means, and displacing sufficient urine in said drainage tube into said evacuation means for insuring that substantially no urine remains interiorly of said body member distal end.

Claim 4

The apparatus as described in 1, wherein said ambulatory evacuation means comprises a container of flexible material, said container being resiliently compressible when subjected to manual pressure and upon release of said manual pressure being resiliently expansible to create a negative pressure therein.

Claim 5

The apparatus as described in 1, wherein said ambulatory evacuation means comprises a container of flexible material, said container being resiliently compressible when subjected to manual pressure and upon release of said manual pressure being resiliently expansible to create a negative pressure therein.