EP0543435A1 - A device for mixing a liquid with a pulverized substance which has a tendency to emit dust when touched by the fluid - Google Patents
A device for mixing a liquid with a pulverized substance which has a tendency to emit dust when touched by the fluid Download PDFInfo
- Publication number
- EP0543435A1 EP0543435A1 EP92203359A EP92203359A EP0543435A1 EP 0543435 A1 EP0543435 A1 EP 0543435A1 EP 92203359 A EP92203359 A EP 92203359A EP 92203359 A EP92203359 A EP 92203359A EP 0543435 A1 EP0543435 A1 EP 0543435A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fluid
- container
- filter
- substance
- dust
- 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- Withdrawn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
Images
Classifications
-
- 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
- A61J1/20—Arrangements for transferring or mixing fluids, e.g. from vial to syringe
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/181—Preventing generation of dust or dirt; Sieves; Filters
-
- 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
- B65D23/00—Details of bottles or jars not otherwise provided for
- B65D23/04—Means for mixing or for promoting flow of contents
-
- 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
- B65D51/00—Closures not otherwise provided for
- B65D51/16—Closures not otherwise provided for with means for venting air or gas
- B65D51/1605—Closures not otherwise provided for with means for venting air or gas whereby the interior of the container is maintained in permanent gaseous communication with the exterior
- B65D51/1616—Closures not otherwise provided for with means for venting air or gas whereby the interior of the container is maintained in permanent gaseous communication with the exterior by means of a filter
-
- 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
- B65D51/00—Closures not otherwise provided for
- B65D51/24—Closures not otherwise provided for combined or co-operating with auxiliary devices for non-closing purposes
Definitions
- the present invention relates to a device for mixing a fluid with a pulverized substance which has a tendency to emit dust or powder when touched by the fluid.
- substance is intended to embrace particularly, but not exclusively, poisonous or toxic substances such as medicines, biocides or the like.
- EP-A-0 356 480 A method of avoiding that dust whirls up against the attendants is known from EP-A-0 356 480.
- the known method is, however, relatively complicated since it requires the use of a filter which has to be liquid as well as gas permeable.
- the object of the invention is, therefore, to provide a device of the aforementioned kind which has a satisfactorily dust blocking function which does not require any complicated filter of the above-mentioned type, but which only requires a simple and cheap gas permeable filter, for instance of so called dry filter type.
- the Figure shows a device according to the invention, including a container, namely a medical container in the form of a cylindrical glass bottle 1 having an externally screw-threaded cylindric neck 2, the circular opening 3 of which defines the only opening of the bottle 1.
- the container 1 is partially filled with a predetermined amount of a pulverized medical substance 4, for instance antibiotic in the form of penicillin, for instance.
- the container 1 is designed to be partially filled with a predetermined amount of fluid 5, for example water, that is to be mixed with the medical substance 4, for instance up to a level 6.
- the fluid lock 9 consists of a tube 10 which is fastened in the opening 8 and oriented coaxially in relation to the neck 2 of the bottle, the upper portion 10a of the tube, which is located outside the mouth of the neck 2, being funnel shaped in order to facilitate the filling of fluid into the bottle 1.
- the lowermost portion of the tube 10, which is inserted into the bottle 1, supports, for instance by means of threads 11 or other suitable supporting means, a circular dish 12 having a larger diameter than the tube 10 and an upwardly directed brim 13, the edge 13a of which extends a short distance above the lowermost end edge of the tube 10.
- the function of the device is as follows: When the fluid, here water, is poured into the bottle 1 in the direction of arrow 14, some of the fluid 5 will stay on the dish 12 up to a level in registry with the edge 13a of the dish, and also at a distance up in the tube 10. This fluid on the dish 12 and up in the tube 10 thereby form a fluid lock which blocks gas, here air, from flowing out through the fluid lock from the interior of the bottle 1.
- gas here air
- the cap 15 is so designed that it, when screw-tightened over the neck 2, automatically destroys or deforms the fluid lock such that the patient can pour out the content without having to first remove the fluid lock.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Pharmacology & Pharmacy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medical Preparation Storing Or Oral Administration Devices (AREA)
- Mixers With Rotating Receptacles And Mixers With Vibration Mechanisms (AREA)
- Nozzles (AREA)
Abstract
A device for mixing a fluid (5) with a pulverized substance (4) which has a tendency to emit dust when touched by the fluid. The device comprises a container (1) for said substance, the container having a fluid lock (9) for permitting a gas blocking supply of the fluid to the container (1) and a filter (7) for blocking dust escape from the container.
Description
- The present invention relates to a device for mixing a fluid with a pulverized substance which has a tendency to emit dust or powder when touched by the fluid. The term "substance" is intended to embrace particularly, but not exclusively, poisonous or toxic substances such as medicines, biocides or the like.
- Persons who carry out such mixing of poisonous, toxic or allergenic substances are often afflicted by dust that whirls up in the air when the fluid reaches the pulverized substance. A particular serious problem is the manual preparing of medical mixtures, for example water mixtures of antibiotic. Such mixtures, which are given to children because they have difficulty in swallowing tablets, have a durability of only two weeks, for which reason they cannot be prepared at the medical factory but have to be prepared at the drug-store each time. Therefore, the drug-store attendants are often susceptible to allergical problems due to the dust that whirls about in the air when the water is poured on the pulverized medical substance during the preparing of the mixture.
- A method of avoiding that dust whirls up against the attendants is known from EP-A-0 356 480. The known method is, however, relatively complicated since it requires the use of a filter which has to be liquid as well as gas permeable.
- The object of the invention is, therefore, to provide a device of the aforementioned kind which has a satisfactorily dust blocking function which does not require any complicated filter of the above-mentioned type, but which only requires a simple and cheap gas permeable filter, for instance of so called dry filter type.
- This object is achieved with a device having the characterizing features set forth in
Claim 1. - Further developments of the invention will be apparent from the depending Claims.
- The invention will be described in more detail below with reference to the accompanying drawing, the only Figure of which illustrates a longitudinal section of a preferred embodiment of the invention.
- The Figure shows a device according to the invention, including a container, namely a medical container in the form of a
cylindrical glass bottle 1 having an externally screw-threadedcylindric neck 2, thecircular opening 3 of which defines the only opening of thebottle 1. Thecontainer 1 is partially filled with a predetermined amount of a pulverizedmedical substance 4, for instance antibiotic in the form of penicillin, for instance. Thecontainer 1 is designed to be partially filled with a predetermined amount offluid 5, for example water, that is to be mixed with themedical substance 4, for instance up to alevel 6. - Fastened in the
circular opening 3 of the container is an annular gas permeable dry-filter 7, the central portion of which has acylindrical opening 8 in which a water-trap 9 is mounted. The "water" of the water-trap 9 is constituted by thefluid 5, which does not have to be water, which is to be mixed with thesubstance 4. Therefore, the water lock 9 is below generally referred to as a fluid lock. The fluid lock 9 consists of atube 10 which is fastened in the opening 8 and oriented coaxially in relation to theneck 2 of the bottle, theupper portion 10a of the tube, which is located outside the mouth of theneck 2, being funnel shaped in order to facilitate the filling of fluid into thebottle 1. The lowermost portion of thetube 10, which is inserted into thebottle 1, supports, for instance by means ofthreads 11 or other suitable supporting means, acircular dish 12 having a larger diameter than thetube 10 and an upwardly directedbrim 13, theedge 13a of which extends a short distance above the lowermost end edge of thetube 10. - The function of the device is as follows:
When the fluid, here water, is poured into thebottle 1 in the direction ofarrow 14, some of thefluid 5 will stay on thedish 12 up to a level in registry with theedge 13a of the dish, and also at a distance up in thetube 10. This fluid on thedish 12 and up in thetube 10 thereby form a fluid lock which blocks gas, here air, from flowing out through the fluid lock from the interior of thebottle 1. When the fluid passes through the fluid lock into thebottle 1, the corresponding amount of air will be released through the gaspermeable filter 7. If this air is mixed with up-whirling dust from thesubstance 4, this dust will be trapped by thefilter 7. Thereafter, a closing means in the form of an internally threadedcap 15 is screw-tightened over theneck 2. Thebottle 1 is shaked such that thesubstance 4 and thefluid 5 will be carefully mixed. The mixture is now ready to be delivered to the patient. Before using the medicine, the patient has to remove and throw away the fluid lock. - According to an alternative embodiment, not shown, the
cap 15 is so designed that it, when screw-tightened over theneck 2, automatically destroys or deforms the fluid lock such that the patient can pour out the content without having to first remove the fluid lock.
Claims (4)
- A device for mixing a fluid (5) with a pulverized substance (4) which has a tendency to emit dust when touched by the fluid, characterized by a container (1) partially filled with said substance (4), the container (1) being provided with a fluid lock (9) for permitting a gas blocking supply of said fluid (5) to the container (1), and a gas permeable filter (7) permitting gas to escape from the container but blocking dust from escaping from the container (1).
- A device according to Claim 1, characterized in that the filter (7) is of a dry filter type.
- A device according to any preceding Claim, characterized in that the container (1) has an opening (3) in which the fluid lock (9) as well as the filter (7) is mounted.
- A device according to Claim 3, characterized in that the filter (7) concentrically surrounds the fluid lock (9).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9103448A SE469464B (en) | 1991-11-21 | 1991-11-21 | DEVICE FOR MIXING A SCIENTIFIC AND A PULVERIZED SUBSTANCE WHICH HAS TENDENCE TO CONTACT DUST |
SE9103448 | 1991-11-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0543435A1 true EP0543435A1 (en) | 1993-05-26 |
Family
ID=20384394
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92203359A Withdrawn EP0543435A1 (en) | 1991-11-21 | 1992-11-02 | A device for mixing a liquid with a pulverized substance which has a tendency to emit dust when touched by the fluid |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0543435A1 (en) |
SE (1) | SE469464B (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU8452575A (en) * | 1974-09-03 | 1977-03-10 | Hughes Steel Prod Ltd | Combined filter and mixer |
WO1989007434A1 (en) * | 1988-02-10 | 1989-08-24 | Kenneth Wallmark | A process of mixing a fluid with a pulverized substance and a container for carrying out the process |
-
1991
- 1991-11-21 SE SE9103448A patent/SE469464B/en not_active IP Right Cessation
-
1992
- 1992-11-02 EP EP92203359A patent/EP0543435A1/en not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU8452575A (en) * | 1974-09-03 | 1977-03-10 | Hughes Steel Prod Ltd | Combined filter and mixer |
WO1989007434A1 (en) * | 1988-02-10 | 1989-08-24 | Kenneth Wallmark | A process of mixing a fluid with a pulverized substance and a container for carrying out the process |
Also Published As
Publication number | Publication date |
---|---|
SE469464B (en) | 1993-07-12 |
SE9103448D0 (en) | 1991-11-21 |
SE9103448L (en) | 1993-05-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19921229 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IT LI NL PT |
|
17Q | First examination report despatched |
Effective date: 19950313 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19951024 |