GB2304686A - Valves and liquid supply systems - Google Patents
Valves and liquid supply systems Download PDFInfo
- Publication number
- GB2304686A GB2304686A GB9518472A GB9518472A GB2304686A GB 2304686 A GB2304686 A GB 2304686A GB 9518472 A GB9518472 A GB 9518472A GB 9518472 A GB9518472 A GB 9518472A GB 2304686 A GB2304686 A GB 2304686A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- liquid
- outlet
- inlet
- valve element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
- G01F11/28—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with stationary measuring chambers having constant volume during measurement
- G01F11/30—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with stationary measuring chambers having constant volume during measurement with supply and discharge valves of the lift or plug-lift type
- G01F11/32—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with stationary measuring chambers having constant volume during measurement with supply and discharge valves of the lift or plug-lift type for liquid or semiliquid
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M3/00—Medical syringes, e.g. enemata; Irrigators
- A61M3/02—Enemata; Irrigators
- A61M3/0204—Physical characteristics of the irrigation fluid, e.g. conductivity or turbidity
- A61M3/0208—Physical characteristics of the irrigation fluid, e.g. conductivity or turbidity before use
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M3/00—Medical syringes, e.g. enemata; Irrigators
- A61M3/02—Enemata; Irrigators
- A61M3/0204—Physical characteristics of the irrigation fluid, e.g. conductivity or turbidity
- A61M3/022—Volume; Flow rate
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M3/00—Medical syringes, e.g. enemata; Irrigators
- A61M3/02—Enemata; Irrigators
- A61M3/0233—Enemata; Irrigators characterised by liquid supply means, e.g. from pressurised reservoirs
- A61M3/0241—Enemata; Irrigators characterised by liquid supply means, e.g. from pressurised reservoirs the liquid being supplied by gravity
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/70—Gravity drainage systems
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2210/00—Anatomical parts of the body
- A61M2210/10—Trunk
- A61M2210/1078—Urinary tract
- A61M2210/1085—Bladder
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M3/00—Medical syringes, e.g. enemata; Irrigators
- A61M3/02—Enemata; Irrigators
- A61M3/0202—Enemata; Irrigators with electronic control means or interfaces
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
Apparatus for irrigating and/or educating a bladder 10 comprises a stand 11, a drip bag 12, a feed line 13, a valve 14 for the feed line 13, a catheter 15, a drain line 16 and a valve 17 disposed in the drain line 16. The valves 14 and 17 are controlled by box 18. The valves 14 and 17 included inlet and outlet seats (28, 29, figure 2) at respective ends of the chamber 27 and an element(24, figure 2) which can be alternately seated on seats 29 and 28 to all to allow the chamber 27 to first fill with a known volume of liquid and then release that volume. The rate at which the valve element 24 is reciprocated is controlled by the box 18, actuating an electromagnet to move the valve element.
Description
Valves and Liquid Supply Svstems
This invention relates to valves liquids and in particular for valves for use in certain liquid supply systems.
There are many instances where it is desirable to supply liquid through a gravity feed. However, such feeds can be problematic where it is desired to produce an accurate but relatively low flow rate. One example of this is the drip bags used in hospitals for many purposes.
Frequently, the flow rate is set by means of a clamp operating on the feed tube and by the eye of the operator.
Another medical application of such feeds is bladder irrigation and a device has been developed using a tipping valve, which can deliver a predetermined volume at a particular rate. However, the construction of this device means that it is not suitable for accurate instantaneous variable control.
From one aspect the invention consists in a valve having a body defining a chamber of known volume having a liquid inlet and liquid outlet in respective opposed sides thereof, a respective seat around each of the inlet and outlet and a valve element movable between the seats for closing first the outlet and then the inlet so that the chamber first fills and then the known volume is dispensed.
Preferably the valve further includes means for relatively moving the body and the valve element so as to alternately seat the valve element against the outlet and inlet. The moving means may include magnet means and the valve element may be magnetic. In one such arrangement the magnetic means may be fixed and the moving means may include for reciprocally moving the chamber past the magnet means generally along a line passing through the inlet and outlet.
In this case the magnet means may be either an electromagnet or, more preferably, a permanent magnet.
In an alternative arrangement the magnet means may be an electromagnet positioned so as to attract the valve element on to the inlet seat when the electromagnet is switched on. The valve may further include an electromagnet associated with the outlet for attracting the valve element on to the outlet seat when the further electromagnet is switched on.
Control means may be included for controlling the movement of the valve element between the seats, in which case the control means may move the valve element at a rate to provide a known pulsed flow rate of the liquid. The control means may set a maximum rate of operation so that there is always a sufficient time for the chamber to fill or, alternatively means may detect that the chamber is full and enable the control means. In its simplest form the control means may be a timer.
The invention may further include a liquid supply including a reservoir, a gravity feed line and a valve as defined above. It may still further include a liquid drain including an inlet, an outlet and a valve as defined above, connected between the inlet and the outlet.
From another aspect the invention may include apparatus for educating and/or irrigating a bladder, including a liquid supply for supplying liquid to the bladder and a liquid drain for removing liquid from the bladder and means for controlling the relative rates of flow in the supply and the drain.
Thus, in one embodiment the controlling means may operate to increase progressively the instantaneous volume of liquid in the bladder so as to progressively stretch the bladder wall.
The apparatus may include a liquid supply and/or a liquid drain as defined above.
Although the invention has been defined above, it is to be understood that it includes any inventive combination of the features set out above or in the following description.
The invention may be performed in various ways and specific embodiments will now be described, by way of example, with reference to the accompanying drawings, in which;
Figure 1 is a diagrammatic view of an apparatus for educating a bladder;
Figure 2 is a longitudinal section through a valve for use in the apparatus of Figure 1;
Figure 3 is a longitudinal section through an alternative version of the valve;
Figure 4 is a view from above of one embodiment of a electromagnet for use with the valves of Figures 2 and 3;
Figure 5 is a side view of the electromagnet of Figure 4;
Figure 6 is a view from above of an alternate form of electromagnet; and
Figure 7 is a side view of the electromagnet of Figure 6.
Apparatus for irrigating and/or educating a bladder is generally indicated at 10 and comprises a stand 11, a drip bag 12, a feed line 13, a valve 14 for the feed line 13, a catheter 15, a drain line 16 and a valve 17 disposed in the drain line 16. Also included is a control box 18 which monitors and controls the operation of the valves 14 and 17.
The catheter 15 is placed in the neck of the patient's bladder 19.
As has been mentioned previously it is known to irrigate patient's bladders by introducing fluid and then draining it out. It has now been appreciated that with a number of patients, whose bladders have been inactive as a result of a variety of medical conditions, it would be advantageous to re-educate the bladder by stretching it.
This treatment can be achieved by the apparatus of
Figure 10, because by monitoring the operation of the valves 14 and 17 and controlling them suitably, the inflow of liquid in to the bladder can be maintained by the outflow so that the bladder progressively, but slowly fills without becoming contaminated by stagnant liquid.
In order to achieve this robust but accurate and easily controllable valves are required and it is preferably that they are inexpensive.
Such a valve is generally indicated at 20 in Figure 2 and comprises a body 21, which is made up of two coupling portions 22, 23, and a valve element 24. Portion 22 defines the inlet 25, whilst portion 23 defines an outlet 26. Together they defined a chamber 27 which is of known volume, e.g. 10 ml. Respective seats 28, 29 are defined in the chamber 27 and surround the inlet 25 and outlet 26 respectively. They are shaped to be engaged by the valve element 24, which is in the form of a metal ball and which can be moved from one seat to the other to close either the inlet 25 or the outlet 26.
When the outlet 26 is closed the chamber 27 fills. If the valve element 24 is then swiftly moved to close the inlet 25, the known volume within the chamber 27 is dispensed through the outlet until the chamber is empty. If the valve element then returns to close the outlet 26, the process can be repeated.
The most convenient way of achieving this arrangement is to provide an electromagnet 30 adjacent the seat 28. The electromagnet 30 is switched on the valve element 24 is lifted from the outlet 26 to the inlet 25 and when it is switched on so the valve element drops back to close the outlet 26.
Figure 3 shows an almost identical arrangement except a further electromagnet 31 is provided adjacent the outlet 26 so that valve element 24 is moved entirely under the control of the two electro magnets. This arrangement can be used in non-vertical orientations. It will also be noted that the construction consists of two identical inlet/outlet portions and a sleeve 32 which interconnects them to define the chamber 27.
It is possible to configure the valves using permanent magnets if the body 21 is moved relative to the magnet to achieve the movement. Other non-magnetic arrangements could be used. For example, the valve element 24 could be thrown from one seat to the other by sharp mechanical movement.
For this type of valve the control box 18 may include a delay for a sufficient time to ensure filling of the chamber 27 or it may be enabled by a senser (not shown) detecting the filling of the chamber 27. In its simplest form the control box 18 may be a variable timer, which controls appropriate switching of the electromagnet or magnets 30 and 31.
Possible configuration of the electromagnets 30, 31 are shown in Figures 4 and 5 and 6 and 7 respectively. These comprise a coil 33 and a core 34 in each case. The only difference is that with Figures 4 and 5 the pole piece 35 is integral with the core 34, whereas in Figures 6 and 7 this is a separate element which is attached to the core.
Although the valves have been described in connection with the apparatus 10, it will be appreciated that they could have many other uses and equally it will be appreciated that the apparatus 10 could be operated with other forms of valve.
Claims (15)
1. A valve having a body defining a chamber of known
volume having a liquid inlet and a liquid outlet in respective opposed sides thereof, a respective seat around each of the inlet and outlet and a valve element movable between the seats for closing first the outlet and then the inlet so that the chamber first fills and then the known volume is dispensed.
2. A valve as claimed in claim 1 further including means for relatively moving the body and the valve element.
3. A valve as claimed in claim 2 wherein the moving means includes magnet means and the valve element is magnetic.
4. A valve is claimed in claim 3 wherein the magnet means is fixed and the moving means includes means for reciprocally moving the chamber past the magnet means generally along a line passing through the inlet and outlet.
5. A valve as claimed in claim 4 wherein the magnet means in a permanent magnet.
6. A valve as claimed in claim 3 wherein the magnet means is electromagnet positioned so as to attract the valve element on to the inlet seat when switched on.
7. A valve as claimed in claim 6 further including an electromagnet associated with the outlet for attracting the valve element into the outlet seat when switched on.
8. A valve as claimed in any one of the preceding claims including control means for controlling the movement of the valve element between the seats.
9. A valve as claimed in claim 8 wherein the control means moves the valve element a rate to provide a known pulsed flow rate of the liquid.
10. A valve substantially as herein before defined with reference to the accompanying drawings.
11. A liquid supply including a reservoir, a gravity feed line and a valve, as claimed in any one of the preceding claims, in the line.
12. A liquid drain including an inlet, and outlet, a valve, as claimed in any one of claims 1 to 10, connected between the inlet and the outlet.
13. Apparatus for educating and/or irrigating a bladder, including a liquid supply for supplying liquid to the bladder and a liquid drain for removing liquid from the bladder and means for controlling the relative rates of flow in the supply and the drain.
14. Apparatus as claimed in claim 13 wherein the controlling means operates to increase progressively the instantaneous volume of the liquid in the bladder to as to progressively stretch the bladder wall.
15. Apparatus as claimed in claim 14 or claim 15 wherein the liquid supply is as claimed in claim 11 and/or the liquid drain is as claimed in claim 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9518472A GB2304686A (en) | 1995-09-09 | 1995-09-09 | Valves and liquid supply systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9518472A GB2304686A (en) | 1995-09-09 | 1995-09-09 | Valves and liquid supply systems |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9518472D0 GB9518472D0 (en) | 1995-11-08 |
| GB2304686A true GB2304686A (en) | 1997-03-26 |
Family
ID=10780477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9518472A Withdrawn GB2304686A (en) | 1995-09-09 | 1995-09-09 | Valves and liquid supply systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2304686A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003103837A1 (en) * | 2002-06-06 | 2003-12-18 | Mimidos-Verfahrenstechnik Gmbh | Method and device for dosing fluids |
| ITMO20120325A1 (en) * | 2012-12-27 | 2014-06-28 | Physion Srl | DISPOSABLE DEVICE FOR DISPOSAL OF EXHAUSTED MEDICINES |
| CN106581796A (en) * | 2016-12-28 | 2017-04-26 | 苏州科技城医院 | Bladder continuous flusher |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110801548B (en) * | 2019-10-21 | 2021-08-10 | 南通市传染病防治院(南通市第三人民医院) | Intelligent bladder irrigation monitoring control system and method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4015755A (en) * | 1975-12-12 | 1977-04-05 | Edward Lerner | Electromagnetically actuatable metering valve for successive delivery of measured volumes of fluid from a fluid reservoir |
| WO1984001937A1 (en) * | 1982-11-11 | 1984-05-24 | Nazmi Oezdemir | A dosing apparatus for dispensing predetermined quantities preferably of beverages from a bottle |
| US4496078A (en) * | 1980-09-09 | 1985-01-29 | Bosch-Siemens Hausgerate Gmbh | Container, especially a disposable container for beverage concentrates, with a preferably magnetically-actuated reusable measurer attached to the opening of the container |
| US4667853A (en) * | 1984-03-13 | 1987-05-26 | Bosch Siemens Hausergerate Gmbh | Device for the metered delivery of liquids |
| US5097991A (en) * | 1988-12-16 | 1992-03-24 | Itw New Zealand Limited | Metering dispenser for liquids |
-
1995
- 1995-09-09 GB GB9518472A patent/GB2304686A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4015755A (en) * | 1975-12-12 | 1977-04-05 | Edward Lerner | Electromagnetically actuatable metering valve for successive delivery of measured volumes of fluid from a fluid reservoir |
| US4496078A (en) * | 1980-09-09 | 1985-01-29 | Bosch-Siemens Hausgerate Gmbh | Container, especially a disposable container for beverage concentrates, with a preferably magnetically-actuated reusable measurer attached to the opening of the container |
| WO1984001937A1 (en) * | 1982-11-11 | 1984-05-24 | Nazmi Oezdemir | A dosing apparatus for dispensing predetermined quantities preferably of beverages from a bottle |
| US4667853A (en) * | 1984-03-13 | 1987-05-26 | Bosch Siemens Hausergerate Gmbh | Device for the metered delivery of liquids |
| US5097991A (en) * | 1988-12-16 | 1992-03-24 | Itw New Zealand Limited | Metering dispenser for liquids |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003103837A1 (en) * | 2002-06-06 | 2003-12-18 | Mimidos-Verfahrenstechnik Gmbh | Method and device for dosing fluids |
| ITMO20120325A1 (en) * | 2012-12-27 | 2014-06-28 | Physion Srl | DISPOSABLE DEVICE FOR DISPOSAL OF EXHAUSTED MEDICINES |
| CN106581796A (en) * | 2016-12-28 | 2017-04-26 | 苏州科技城医院 | Bladder continuous flusher |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9518472D0 (en) | 1995-11-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |