Surgery – Means and methods for collecting body fluids or waste material – Receptacle attached to or inserted within body to receive...
Patent
1999-03-03
2000-07-18
Polutta, Mark O.
Surgery
Means and methods for collecting body fluids or waste material
Receptacle attached to or inserted within body to receive...
604544, 600573, 600579, 600581, A61M 100
Patent
active
060900873
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention relates to a simple automatic opening and closing type of urination apparatus which can be easily connected between a catheter and a urine-collecting bag and which facilitates automatic urine-storage and urination from a urinary bladder of a patient who carries out urination by insertion of the catheter into the urinary bladder.
BACKGROUND ART
It is necessary for a patient, who suffers from urinary disfunction to discharge urine out of the body through a urethra catheter left in the urinary bladder. To this end, several kinds of urination apparatus have been utilized. Most conventional urination apparatuses introduce urine into the urine-collecting bag through the urethra catheter inserted through the ureter into the urinary bladder and an on-off valve connected to an end of the urethra catheter. In such a urination apparatus, since urine always flows out of the body through the catheter left in the urinary bladder, the bladder does not expand and contract to effect normal urine-storage and urination and remains in an atrophied state. Consequently, the urinary bladder may completely lose its function after a long period of time.
Thus, several automatic urination apparatuses which actuate an on-off valve in response to detection of urine pressure in the urinary bladder have been proposed to maintain the function of the urinary bladder. However, these apparatuses have several problems in that they are large in scale, expensive, and inconvenient for a patient.
DISCLOSURE OF THE INVENTION
An object of the present invention is to provide a simple automatic opening and closing type of urination apparatus which enables a patient to collect urine while maintaining a normal function of a urinary bladder and which is inexpensive and simple in construction.
A simple automatic opening and closing type of urination apparatus in accordance with the present invention comprises mainly a flexible tube, a plunger, a bearing table, an elastic member, an electromagnetic solenoid, and an actuator. The flexible tube has an inlet port and an outlet port. The plunger has a pushing portion at one end and a contact portion at the other end. The bearing table is disposed below the pushing portion of the plunger to support the flexible tube. The elastic member normally biases the pushing portion of the plunger onto the flexible tube on the bearing table to squeeze the flexible tube between the pushing portion and the bearing table. The electromagnetic solenoid selectively attracts and repulses the contact portion of the plunger. The actuator selectively couples the electromagnetic solenoid to a power source.
In the above construction, the inlet port of the flexible tube is connected through a catheter to a urinary bladder and the outlet port of the flexible tube is connected through a conduit tube to a urine-collecting bag. The electromagnetic solenoid is energized when urine pressure in the urinary bladder reaches a given value, thereby retracting the pushing portion of the plunger to release the flexible tube from being squeezed.
The actuator may be any one of a balloon type pressure sensor, a timer, and a push button.
The power source may be any one of an AC source, a dry battery, and a storage battery.
The urine in a urinary bladder is discharged from one of the outlet ports in the flexible tube into a urine-collecting bag outside a patient's body when urine pressure in the urinary bladder reaches a predetermined value. Each of the outlet ports is set to correspond to each of the predetermined values of the pressure of urine in the urinary bladder communicated with the inlet port of the flexible tube. After completing urination the above operation is repeated. Thus, the urinary bladder can repeat its own expansion and contraction for urine-storage and urination as usual, although the urinary bladder is communicated with the urine-collecting bag through the catheter.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a schematic explanatory view of an example of use of a simple automatic opening a
Nakajima Yasuhiko
Tsukada Osamu
Cheney Kelly M
Polutta Mark O.
Tsukada Medical Research Co., Ltd.
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