CA2025105A1 - Device for storing and dispensing sterile liquids - Google Patents
Device for storing and dispensing sterile liquidsInfo
- Publication number
- CA2025105A1 CA2025105A1 CA 2025105 CA2025105A CA2025105A1 CA 2025105 A1 CA2025105 A1 CA 2025105A1 CA 2025105 CA2025105 CA 2025105 CA 2025105 A CA2025105 A CA 2025105A CA 2025105 A1 CA2025105 A1 CA 2025105A1
- Authority
- CA
- Canada
- Prior art keywords
- container
- outlet
- valve
- housing
- filter
- 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.)
- Abandoned
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 10
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims 1
- 238000007789 sealing Methods 0.000 claims 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract description 12
- 239000011780 sodium chloride Substances 0.000 abstract description 12
- 230000001954 sterilising effect Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 2
- 239000000443 aerosol Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229920002457 flexible plastic Polymers 0.000 description 1
- 230000036512 infertility Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D47/00—Closures with filling and discharging, or with discharging, devices
- B65D47/04—Closures with discharging devices other than pumps
- B65D47/20—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge
- B65D47/2018—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure
- B65D47/2093—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure slide valve type
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L12/00—Methods or apparatus for disinfecting or sterilising contact lenses; Accessories therefor
- A61L12/08—Methods or apparatus for disinfecting or sterilising contact lenses; Accessories therefor using chemical substances
- A61L12/086—Container, accessories or devices therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
- A61L2/022—Filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/0005—Components or details
- B05B11/0037—Containers
- B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
- B05B11/0044—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/0005—Components or details
- B05B11/0037—Containers
- B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
- B05B11/0044—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means
- B05B11/00444—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means with provision for filtering or cleaning the air flow drawn into the container
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
- A61J1/14—Details; Accessories therefor
- A61J1/1443—Containers with means for dispensing liquid medicaments in a filtered or sterile way, e.g. with bacterial filters
- A61J1/145—Containers with means for dispensing liquid medicaments in a filtered or sterile way, e.g. with bacterial filters using air filters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
- A61J1/14—Details; Accessories therefor
- A61J1/1443—Containers with means for dispensing liquid medicaments in a filtered or sterile way, e.g. with bacterial filters
- A61J1/1456—Containers with means for dispensing liquid medicaments in a filtered or sterile way, e.g. with bacterial filters using liquid filters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
- A61J1/14—Details; Accessories therefor
- A61J1/1468—Containers characterised by specific material properties
Landscapes
- Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Medical Preparation Storing Or Oral Administration Devices (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
- Closures For Containers (AREA)
Abstract
DEVICE FOR STORING AND DISPENSING STERILE LIQUIDS
ABSTRACT OF THE DISCLOSURE
Various means are used to produce and dispense sterile saline for use by contact lens wearers. The present invention provides a simple, portable device for storing and dispensing sterile saline which comprises a resilient hollow container having a first outlet, a housing removably mounted on said container and having a second outlet and a passage communicating between said first and second outlet, a liquid-sterilizing filter mounted in said housing in said passage, and valve means for alternately opening and closing said second outlet, whereby pressure applied to said container forces a liquid stored in said container through said filter and out said second outlet when said valve is in an open position.
ABSTRACT OF THE DISCLOSURE
Various means are used to produce and dispense sterile saline for use by contact lens wearers. The present invention provides a simple, portable device for storing and dispensing sterile saline which comprises a resilient hollow container having a first outlet, a housing removably mounted on said container and having a second outlet and a passage communicating between said first and second outlet, a liquid-sterilizing filter mounted in said housing in said passage, and valve means for alternately opening and closing said second outlet, whereby pressure applied to said container forces a liquid stored in said container through said filter and out said second outlet when said valve is in an open position.
Description
2~`2510~
DEVICE FOR STORING AND DISPENSING STERILE LIOUIDS
BACKGROUND OF THE INVENTION
The invention relates to the field of devices for sterilizing liquids, and more particularly to devices for storing and sterilizing saline for ophthalmic purposes, and particularly for contact lens applications.
Sterile saline is required by contact lens wearers for use as a rinse solution, for rinsing the lens prior to inserting the lens in the eye, and also for soaking the lens during the cleaning and disinfecting process.
Sterilization of the saline is generally accomplished using heat, ultra-violet light, or filtration. The saline which has been sterilized in bulk is then stored in plastic squeeze bottles with the addition of chemicals to preserve the sterility.
Sterilized saline has also been marketed in aerosol cans, which provide sterile storage without the need for chemical agents.
This is accomplished due to the positive pressure within the container which keeps contaminants out. However, the expense and environmental problems associated with aerosol containers make this a less desirable alternative.
There is therefore a need for a simple and portable device for storing and dispensing sterile saline.
SUMMARY OF THE INVENTION
The present invention provides a simple, portable 2~25~
device for storing and dispensing sterile saline which comprises a resilient hollow container having a first outlet, a housing removably mounted on said container and having a second outlet and a passage communicating between said first and second outlet, a liquid-sterilizing filter mounted in said housing in said passage, and valve means for alternately opening and closing said second outlet, whereby pressure applied to said container forces a liquid stored in said container through said filter and out said second outlet when said valve is in an open position.
BRIEF DESCRIPTION OF THE DRAWINGS
In drawings which illustrate a preferred embodiment of the invention:
Fig. 1 is a vertical cross-sectional view of the invention with the valve in the closed position;
Fig. 2 is a detail of the view of invention shown in Figure 1, but with the valve in the open position;
Fig. 3 is a horizontal cross-sectional viPw of the invention taken along lines 3-3 of Figure 2;
Fig. 4 is a horizontal cross-sectional view of the invention taken along lines 4-4 of Figure 2; and Fig. 5 is a detail of a second embodiment of the invention in vertical cross-section.
2Q2~ ~rj;
DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT
Referring to Figure 1, the device of the invention is designated generally as 1. It consists of a resilient squeeze bottle container 3 having hollow interior 2, and a valve and filter housing 5. The squeeze bottle portion 3 is manufactured of a flexible plastic such as a polyethylene or PET, which has sufficient resiliency and memory to return to its original shape after being squeezed. ~he housing 5 is constructed of a rigid plastic such as a polycarbonate. The housing comprises a base 7, body 9 and cover 11. Container 3 has a circular neck 13 forming open mouth 14 and provided with screw threads 15 on its exterior surface which mate with complementary screw threads 17 on the interior surface of circular extension 19 of base 7. Base 7 has a circular flange 21 which has a snap fit connection with circular lip 23 of body 9.
Mounted in the valve and filter housing 5 between base 7 and body 9 is a circular micro-filter 25. Filter 25 is chosen with a mesh sufficiently fine to be useful for the sterilizing function of the invention. A filter having a .2 micron rating is suitable. Such filters are manufactured by Pall Ultrafine Filtration Corporation under the trade-mark ULTIPOR. The filter 25 is sealed in place between base 7 and body 9 by two rubber O-rings 27. To provide rigidity to the filter 25, it is also supported by two plastic inserts 29 located above and below the filter body and having radial ar~s 30 such that the radius of insert 29 is slightly less than that of filter 25. Inserts 29 could also form part of base 7 and body 9.
~2~05 A valve 31 is provided in base 7 to permit air to enter container 3 after liquid is expelled. It consists of a small opening 33 and a pivoting, inwardly opening flap 35 on the interior surface of flange 21, shown in an open position in Figure 1 and a closed position in Figure 2. When the container 3 is squeezed to expel liquid, flap 35 closes opening 33, and when pressure on container 3 is released, flap 35 opens to allow air to enter container 3 in the direction of arrow B, and to allow container 3 to return to its original volume. The same function could be achieved by a plurality of smaller openings.
Alternatively, an accordion type of container could replace a squeeze bottle for container 3 which would obviate the necessity for valve 31.
Housing 9 has a hollow cylindrical portion 36 which forms a lower opening 38 and is provided with outlet port 37.
Opening 38 is circular but for shoulder 40 which extends into opening 38. Port 37 is alternately opened or closed by rubber valve 39. Valve 39 has a sloping, rounded lower face 41 which ends in a circular lip 43 which seals against the interior surface of cylinder 36. Shoulder 40 has a sloping upper surface 44 which conforms to face 41 to seal port 37 when the valve 39 is in the lower position.
Valve 39 is biassed to its lower, closed position by spring 46, one end of which is held on cylindrical base 48 attached to cover 11, and the other end of which is held on a cylindrical extension 50 of base 52 of valve 39. Cover 11 ~s screwed into housing 9 by screw threads 51. This permits cover 11 to be removed leaving valve 39 in place. Alternatively, cover 202510~
11 can be permanently fixed by an adhesive.
In operation, the hollow interior 2 of container 3 is filled with non-sterile saline and valve and filter housing 9 is then screwed into place. In a rest position, valve 39 closes port 537 due to the action of spring 46. When the user squeezes container 3, flap 35 closes and saline is forced through filter 25 in the direction of arrow A, thereby sterilizing it. Valve 39 moves upwardly opening port 37 and the sterile saline is dispensed from port 37 in the direction of arrow C. When pressure 10on container 3 is released, valve 39 returns to its closed position, closing port 37, and flap 35 opens to permit air to enter to return container 3 to its original shape.
A second embodiment shown in Figure 5 permits valve 39 to be locked in a closed position for transport. In this 15embodiment cover 11 in turn is provided with opening 60 provided with screw threads 62 into which a knob 64 is screwed by screw threads 66 on disk 68. Attached to the lower surface 69 of disk 68 is a rod 70 with bulbous lower end 72. Rubber valve 74 has a hollow interior 76 into which rod 70 extends, and a flat lower 20face 78 which seats against shoulder 80 of outlet port 82. Valve 74 is sufficiently resilient in this embodiment, due to the flexing action of its walls, to open and close outlet port 82 in response to the squeezing of container 3 when rod 70 is with-drawn. However valve 74 is locked against opening when rod 70 is 25screwed tightly against the lower interior surface of valve 74 by rotation of knob 64. In this embodiment, valve 74 could be replaced by a rubber diaphragm stretched across the interior chamber 88 of body 9, and adapted to seal against outlet 82 when 202~
pressure is released and open outlet 82 when pressure is applied.
In this variation, shoulder 80 would be generally perpendicular to the walls of chamber 88. Also, to improve the flexibility of valve 74, holes could be provided in disk 68 to permit air to flow between the interior 76 of the valve and the atmosphere.
Figure 5 also shows a second embodiment of base 7 in which the cylindrical flange 19 of base 7 screws into the interior surface of neck 13 of container 3, and a centrally located shield 84 attached to base 7 guards the filter against damage when the container 3 is removed from housin~ 9. Passage-ways 86 permit passage of the liquid around shield 84.
As will be apparent to those skilled in the art, various modifications and adaptations of the structure above described may be made without departing from the spirit of the invention, the scope of which is to be construed in accordance with the accompanying claims.
DEVICE FOR STORING AND DISPENSING STERILE LIOUIDS
BACKGROUND OF THE INVENTION
The invention relates to the field of devices for sterilizing liquids, and more particularly to devices for storing and sterilizing saline for ophthalmic purposes, and particularly for contact lens applications.
Sterile saline is required by contact lens wearers for use as a rinse solution, for rinsing the lens prior to inserting the lens in the eye, and also for soaking the lens during the cleaning and disinfecting process.
Sterilization of the saline is generally accomplished using heat, ultra-violet light, or filtration. The saline which has been sterilized in bulk is then stored in plastic squeeze bottles with the addition of chemicals to preserve the sterility.
Sterilized saline has also been marketed in aerosol cans, which provide sterile storage without the need for chemical agents.
This is accomplished due to the positive pressure within the container which keeps contaminants out. However, the expense and environmental problems associated with aerosol containers make this a less desirable alternative.
There is therefore a need for a simple and portable device for storing and dispensing sterile saline.
SUMMARY OF THE INVENTION
The present invention provides a simple, portable 2~25~
device for storing and dispensing sterile saline which comprises a resilient hollow container having a first outlet, a housing removably mounted on said container and having a second outlet and a passage communicating between said first and second outlet, a liquid-sterilizing filter mounted in said housing in said passage, and valve means for alternately opening and closing said second outlet, whereby pressure applied to said container forces a liquid stored in said container through said filter and out said second outlet when said valve is in an open position.
BRIEF DESCRIPTION OF THE DRAWINGS
In drawings which illustrate a preferred embodiment of the invention:
Fig. 1 is a vertical cross-sectional view of the invention with the valve in the closed position;
Fig. 2 is a detail of the view of invention shown in Figure 1, but with the valve in the open position;
Fig. 3 is a horizontal cross-sectional viPw of the invention taken along lines 3-3 of Figure 2;
Fig. 4 is a horizontal cross-sectional view of the invention taken along lines 4-4 of Figure 2; and Fig. 5 is a detail of a second embodiment of the invention in vertical cross-section.
2Q2~ ~rj;
DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT
Referring to Figure 1, the device of the invention is designated generally as 1. It consists of a resilient squeeze bottle container 3 having hollow interior 2, and a valve and filter housing 5. The squeeze bottle portion 3 is manufactured of a flexible plastic such as a polyethylene or PET, which has sufficient resiliency and memory to return to its original shape after being squeezed. ~he housing 5 is constructed of a rigid plastic such as a polycarbonate. The housing comprises a base 7, body 9 and cover 11. Container 3 has a circular neck 13 forming open mouth 14 and provided with screw threads 15 on its exterior surface which mate with complementary screw threads 17 on the interior surface of circular extension 19 of base 7. Base 7 has a circular flange 21 which has a snap fit connection with circular lip 23 of body 9.
Mounted in the valve and filter housing 5 between base 7 and body 9 is a circular micro-filter 25. Filter 25 is chosen with a mesh sufficiently fine to be useful for the sterilizing function of the invention. A filter having a .2 micron rating is suitable. Such filters are manufactured by Pall Ultrafine Filtration Corporation under the trade-mark ULTIPOR. The filter 25 is sealed in place between base 7 and body 9 by two rubber O-rings 27. To provide rigidity to the filter 25, it is also supported by two plastic inserts 29 located above and below the filter body and having radial ar~s 30 such that the radius of insert 29 is slightly less than that of filter 25. Inserts 29 could also form part of base 7 and body 9.
~2~05 A valve 31 is provided in base 7 to permit air to enter container 3 after liquid is expelled. It consists of a small opening 33 and a pivoting, inwardly opening flap 35 on the interior surface of flange 21, shown in an open position in Figure 1 and a closed position in Figure 2. When the container 3 is squeezed to expel liquid, flap 35 closes opening 33, and when pressure on container 3 is released, flap 35 opens to allow air to enter container 3 in the direction of arrow B, and to allow container 3 to return to its original volume. The same function could be achieved by a plurality of smaller openings.
Alternatively, an accordion type of container could replace a squeeze bottle for container 3 which would obviate the necessity for valve 31.
Housing 9 has a hollow cylindrical portion 36 which forms a lower opening 38 and is provided with outlet port 37.
Opening 38 is circular but for shoulder 40 which extends into opening 38. Port 37 is alternately opened or closed by rubber valve 39. Valve 39 has a sloping, rounded lower face 41 which ends in a circular lip 43 which seals against the interior surface of cylinder 36. Shoulder 40 has a sloping upper surface 44 which conforms to face 41 to seal port 37 when the valve 39 is in the lower position.
Valve 39 is biassed to its lower, closed position by spring 46, one end of which is held on cylindrical base 48 attached to cover 11, and the other end of which is held on a cylindrical extension 50 of base 52 of valve 39. Cover 11 ~s screwed into housing 9 by screw threads 51. This permits cover 11 to be removed leaving valve 39 in place. Alternatively, cover 202510~
11 can be permanently fixed by an adhesive.
In operation, the hollow interior 2 of container 3 is filled with non-sterile saline and valve and filter housing 9 is then screwed into place. In a rest position, valve 39 closes port 537 due to the action of spring 46. When the user squeezes container 3, flap 35 closes and saline is forced through filter 25 in the direction of arrow A, thereby sterilizing it. Valve 39 moves upwardly opening port 37 and the sterile saline is dispensed from port 37 in the direction of arrow C. When pressure 10on container 3 is released, valve 39 returns to its closed position, closing port 37, and flap 35 opens to permit air to enter to return container 3 to its original shape.
A second embodiment shown in Figure 5 permits valve 39 to be locked in a closed position for transport. In this 15embodiment cover 11 in turn is provided with opening 60 provided with screw threads 62 into which a knob 64 is screwed by screw threads 66 on disk 68. Attached to the lower surface 69 of disk 68 is a rod 70 with bulbous lower end 72. Rubber valve 74 has a hollow interior 76 into which rod 70 extends, and a flat lower 20face 78 which seats against shoulder 80 of outlet port 82. Valve 74 is sufficiently resilient in this embodiment, due to the flexing action of its walls, to open and close outlet port 82 in response to the squeezing of container 3 when rod 70 is with-drawn. However valve 74 is locked against opening when rod 70 is 25screwed tightly against the lower interior surface of valve 74 by rotation of knob 64. In this embodiment, valve 74 could be replaced by a rubber diaphragm stretched across the interior chamber 88 of body 9, and adapted to seal against outlet 82 when 202~
pressure is released and open outlet 82 when pressure is applied.
In this variation, shoulder 80 would be generally perpendicular to the walls of chamber 88. Also, to improve the flexibility of valve 74, holes could be provided in disk 68 to permit air to flow between the interior 76 of the valve and the atmosphere.
Figure 5 also shows a second embodiment of base 7 in which the cylindrical flange 19 of base 7 screws into the interior surface of neck 13 of container 3, and a centrally located shield 84 attached to base 7 guards the filter against damage when the container 3 is removed from housin~ 9. Passage-ways 86 permit passage of the liquid around shield 84.
As will be apparent to those skilled in the art, various modifications and adaptations of the structure above described may be made without departing from the spirit of the invention, the scope of which is to be construed in accordance with the accompanying claims.
Claims (12)
1. A device for storing and dispensing a sterile liquid comprising:
a) an expandable and contractible hollow container having a first outlet;
b) a housing removably mounted on said container and having a second outlet and a passage communicating between said first and second outlets;
c) a liquid-sterilizing filter mounted in said housing in said passage; and d) first valve means for alternately opening and closing said second outlet;
whereby pressure applied to said container causes said container to contract and forces a liquid stored in said container through said filter and out said second outlet when said valve is in an open position.
a) an expandable and contractible hollow container having a first outlet;
b) a housing removably mounted on said container and having a second outlet and a passage communicating between said first and second outlets;
c) a liquid-sterilizing filter mounted in said housing in said passage; and d) first valve means for alternately opening and closing said second outlet;
whereby pressure applied to said container causes said container to contract and forces a liquid stored in said container through said filter and out said second outlet when said valve is in an open position.
2. The device of claim 1 wherein said expandable container is adapted to be contracted by squeezing by the hands of a user.
3. The device of claims 1 or 2 wherein said container comprises air inlet means communicating between said hollow interior of said container and the exterior of said container, said air inlet means further comprising second, one-way valve means adapted to permit flow of air into said container but preventing flow of air out of said container through said valve.
4. The device of claim 1 wherein said first valve means comprises a resilient sealing surface biassed in a direction to seal against said second outlet and adapted to be movable to open said second outlet upon application of pressure against said surface.
5. The device of claim 1 wherein said filter has a mesh having rating of .2 microns or less.
6. The device of claim 1 wherein said housing comprises a hollow cylindrical chamber, and said first valve means is mounted for reciprocal motion in said chamber.
7. The device of claim 6 wherein said first valve is biassed by means of a spring mounted in said chamber.
8. The device of claim 1 wherein said housing is mounted coaxially on said container and said filter is mounted coaxially between said housing and said container.
9. The device of claim 1 wherein said filter extends perpendicu-larly to the direction of fluid flow in said passage.
10. The device of claim 9 wherein said filter extends completely across said passage.
11. The device of claim 1 wherein said container is a plastic squeeze bottle.
12. The device of claim 11 wherein said first outlet is circular and said housing is mounted on said container by screw threads.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2025105 CA2025105A1 (en) | 1990-09-11 | 1990-09-11 | Device for storing and dispensing sterile liquids |
| EP91904141A EP0548078A1 (en) | 1990-09-11 | 1991-02-22 | Device for storing and dispensing sterile liquids |
| PCT/CA1991/000056 WO1992004004A1 (en) | 1990-09-11 | 1991-02-22 | Device for storing and dispensing sterile liquids |
| CA002091358A CA2091358C (en) | 1990-09-11 | 1991-02-22 | Device for storing and dispensing sterile liquids |
| AU72455/91A AU651086B2 (en) | 1990-09-11 | 1991-02-22 | Device for storing and dispensing sterile liquids |
| US08/336,272 US5507417A (en) | 1990-09-11 | 1994-11-08 | Device for storing and dispensing sterile liquids |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2025105 CA2025105A1 (en) | 1990-09-11 | 1990-09-11 | Device for storing and dispensing sterile liquids |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2025105A1 true CA2025105A1 (en) | 1992-03-12 |
Family
ID=4145949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2025105 Abandoned CA2025105A1 (en) | 1990-09-11 | 1990-09-11 | Device for storing and dispensing sterile liquids |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0548078A1 (en) |
| AU (1) | AU651086B2 (en) |
| CA (1) | CA2025105A1 (en) |
| WO (1) | WO1992004004A1 (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5373972A (en) * | 1991-11-15 | 1994-12-20 | Jsp Partners, L.P. | Preservative-free sterile fluid dispensing system |
| US5310094A (en) * | 1991-11-15 | 1994-05-10 | Jsp Partners, L.P. | Preservative free sterile fluid dispensing system |
| EP0631770B1 (en) * | 1993-06-25 | 1998-07-22 | Alcon Cusi, S.A. | New use of polymeric membranes in the dispensing of pharmaceutical solutions that contain quaternary ammonium compounds as preservatives and corresponding dose dispensor |
| CA2102589C (en) * | 1993-11-05 | 2003-02-11 | Garth T. Webb | Method and apparatus for removing air locks within manually operated micro-filtration devices |
| US5611464A (en) * | 1995-05-30 | 1997-03-18 | Ciba Geigy Corporation | Container for preserving media in the tip of a solution dispenser |
| NZ308677A (en) * | 1995-05-31 | 1997-09-22 | Christopher James Cranshaw | Flexible, free standing, fluid dispensing apparatus with a fluid exit which allows for air drawback |
| US20050135972A1 (en) | 1997-08-11 | 2005-06-23 | Ventana Medical Systems, Inc. | Method and apparatus for modifying pressure within a fluid dispenser |
| US6045759A (en) | 1997-08-11 | 2000-04-04 | Ventana Medical Systems | Fluid dispenser |
| US6093574A (en) | 1997-08-11 | 2000-07-25 | Ventana Medical Systems | Method and apparatus for rinsing a microscope slide |
| US20020110494A1 (en) * | 2000-01-14 | 2002-08-15 | Ventana Medical Systems, Inc. | Method and apparatus for modifying pressure within a fluid dispenser |
| US8137619B2 (en) | 1997-08-11 | 2012-03-20 | Ventana Medical Systems, Inc. | Memory management method and apparatus for automated biological reaction system |
| US6745763B2 (en) * | 1998-10-27 | 2004-06-08 | Garth T. Webb | Vaporizing device for administering sterile medication |
| US7378058B2 (en) | 2002-01-30 | 2008-05-27 | Ventana Medical Systems, Inc. | Method and apparatus for modifying pressure within a fluid dispenser |
| DE102004048503A1 (en) * | 2004-10-05 | 2006-04-13 | Thilo Schleip | Contact lens wetting device for human eye, has sprayers which apply solution to contact lens in eye, for wetting lens, where spraying output of sprayers are adjusted with respect to delivered volume of absorbency of eye |
| CN103649760B (en) | 2011-06-01 | 2015-09-09 | 文塔纳医疗系统公司 | There is the knockout of filter element |
| DE102012025414A1 (en) | 2012-12-20 | 2014-06-26 | Meadwestvaco Calmar Gmbh | Manually operated dispenser for media |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3149758A (en) * | 1961-11-01 | 1964-09-22 | Millipore Filter Corp | Combination filter and flow divider for gas and liquid |
| GB1000248A (en) * | 1962-05-03 | 1965-08-04 | Robert Carl Crisafi | Disposable device for sterilizing solutions by filtration |
| GB2021429B (en) * | 1978-04-14 | 1982-08-11 | Roussel Lab Ltd | Dispensers for sterile liquids |
| US4533068A (en) * | 1981-08-17 | 1985-08-06 | Health Care Concepts, Inc. | Sterile solution delivery and venting devices |
| DE3146343A1 (en) * | 1981-11-23 | 1983-10-20 | PROAQUA - PROVITA AG, 1700 Fribourg | Sterile-sealed container and method of producing it |
| US4463880A (en) * | 1982-04-30 | 1984-08-07 | The Regents Of The University Of California | Medicine drop dispenser with anti-bacterial filter |
| DE3628197A1 (en) * | 1986-08-20 | 1988-02-25 | Streitenberg Hubert Dr Med | Container for liquid medicaments |
| US5025957A (en) * | 1988-10-07 | 1991-06-25 | Ryder International Corp. | Liquid dispenser nozzle assembly |
-
1990
- 1990-09-11 CA CA 2025105 patent/CA2025105A1/en not_active Abandoned
-
1991
- 1991-02-22 WO PCT/CA1991/000056 patent/WO1992004004A1/en not_active Application Discontinuation
- 1991-02-22 EP EP91904141A patent/EP0548078A1/en not_active Withdrawn
- 1991-02-22 AU AU72455/91A patent/AU651086B2/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| AU651086B2 (en) | 1994-07-14 |
| WO1992004004A1 (en) | 1992-03-19 |
| EP0548078A1 (en) | 1993-06-30 |
| AU7245591A (en) | 1992-03-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |