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US 4,957,487 AGranted
External male urinary catheter and collection system
AssigneeBaylor College of Medicine
InventorFrank J. Gerow
Life of this patent
Estimating the term…
Abstract
An external male urinary catheter and collection system utilizes a sheath-like member for accepting the male penis, a negative pressure evacuation device communicating with the sheath-like member, the negative pressure causing the penis to elongate in a simulated erection, and a thin-walled sealing portion of the sheath-like member to provide an air-tight seal about the elongated penis. A one-way drainage tube to permit draining of urine into the evacuation device and a one-way air tube to permit equalization of the negative pressure between the sheath-like member and the evacuation device after urine has been voided into the evacuation device are also provided. The evacuation device may be worn attached to the leg of the wearer.
Claims34
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.
8 more elements
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.
An external male urinary catheter and collection system, comprising
- a generally flexible 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 in concentric axial alignment therewith,
- a drainage tube one end of which is connected to the distal end of said body member for fluid communication therewith,
- first one-way valve means cooperating with said drainage tube to permit one-way fluid flow therethrough from said body member interior,
- an air tube one end of which is connected to the distal end of said body member adjacent said drainage tube for fluid communication with the interior of said body member and with said drainage tube,
- second one-way valve means cooperating with said air tube to permit one-way fluid flow therethrough into said body member interior, and
- portable evacuation means interconnected to the other ends of said drainage and air tubes for communicating therethrough to the interior of said body member, said evacuation means being self-contained and independently operable for producing a negative pressure therein and receiving and collecting urine therein,
- said sleeve-like sealing member having thin-walls for permitting said sealing member to be rolled up over the adjacent portion of said body member to permit the insertion of the distal end of the male penis into the proximal end of said body member and then allowing said sleeve-like sealing member to be returned to its unrolled extended position in snug circumferential contact with the exterior of a portion of the nonerect penile shaft,
- wherein said negative pressure introduced into said body member interior acts on the non-erect penile shaft for drawing the penis into the interior of said body member to near its anatomical limit in a simulation of an erection, and further acting on said thin-walled sleeve-like sealing member for collapsing said thin walls about the penile shaft in circumferential contact therewith for maintaining an air-tight seal therebetween, and
- wherein said air tube and said 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 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.
7 more elements
Dependencies are inferred from the claim text.