US4020840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for catheterizing the bladder
Assignee: Richard Wolf GmbH
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Filing: 1975-09-15
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Granted: 1977-05-03
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Expires: 1995-09-15
Abstract
Abstract Hitherto for relieving the bladder as a result of prostate conditions a catheter has of necessity been inserted under medical supervision and remains permanently in the urethra between medical consultations. At intervals of two weeks these catheters are removed and the bladder flushed with disinfecting fluid. There is now provided a device for catheterising the bladder which may be used without medical supervision as and when required. It includes reversible pump means to relieve the bladder and also to conduct flushing with disinfecting fluid. Valve means ensure correct selected communication of the bladder with discharge means and disinfecting fluid according to the direction of pumping.
Inventors
- 👤 Shafik Barsom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:16
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/71; A61M1/77; A61M1/772; A61M2205/00; A61M2205/82; A61M2205/8206
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
118 words
A device for cathetherising the human bladder comprising catheter conduit means and pump means through which the flow direction of transported fluid is reversible in both means, a first pump connection connecting the pump means to the catheter means, valve means, a second pump connection connecting the pump means to the valve means, a bladder discharge means, a return conduit means for communicating with a liquid container containing a liquid to be returned to the bladder, said valve means being operable to selectively arrange communication between said second pump connection on the one hand and one of the discharge means and return conduit means on the other hand in dependence on the delivery direction of the pump. pg,9
Claim 2
Independent Claim
118 words
A device for cathetherising the human bladder comprising catheter conduit means and pump means through which the flow direction of transported fluid is reversible in both means, a first pump connection connecting the pump means to the catheter means, valve means, a second pump connection connecting the pump means to the valve means, a bladder discharge means, a return conduit means for communicating with a liquid container containing a liquid to be returned to the bladder, said valve means being operable to selectively arrange communication between said second pump connection on the one hand and one of the discharge means and return conduit means on the other hand in dependence on the delivery direction of the pump. pg,9
Claim 3
Dependent Claim
18 words
A device according to claim 1, comprising a liquid container for disinfectant communicating with said return conduit means.
Claim 4
Dependent Claim
23 words
A device according to claim 1, comprising a reversible switch which is manually actuable and resiliently baised for manually reversing the pump means.
Claim 5
Dependent Claim
102 words
A device according to claim 1, wherein the valve means comprises two one-way non-return valves in opposed relation, one non-return valve being arranged between the discharge means and the second pump connection to prevent communication of air from the discharge means to the first pump connection when the pump is operative to return fluid through the return conduit means, the other non-return valve being arranged between the return conduit means and the second pump connection to prevent pumping of fluid into said return conduit means when the pump is operative to pump fluid from the first pump connection to the discharge means.
Claim 6
Dependent Claim
60 words
A device according to claim 2, further comprising a housing, an electrical supply battery, a reversing switch connecting the battery to the pump and operable to switch the pump from one operative state to the other with respect to the direction of delivery, the housing accommodating the battery, the switch, the pump means, the valve means and the liquid container.
Claim 7
Dependent Claim
22 words
A device according to claim 5, comprising a compartment in the housing, the compartment being adapted to replaceably receive the liquid container.
Claim 8
Dependent Claim
17 words
A device according to claim 6, wherein the compartment and the container are of complementary, non-circular cross-section.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-02 | 1980-11-01 | 1981-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-02 | 1984-11-01 | 1985-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-02 | 1988-11-01 | 1989-05-03 | $7700.00 | Window Closed / Lapsed |