EP0498831A1 - Dosage dispensing devices - Google Patents
Dosage dispensing devicesInfo
- Publication number
- EP0498831A1 EP0498831A1 EP19900916323 EP90916323A EP0498831A1 EP 0498831 A1 EP0498831 A1 EP 0498831A1 EP 19900916323 EP19900916323 EP 19900916323 EP 90916323 A EP90916323 A EP 90916323A EP 0498831 A1 EP0498831 A1 EP 0498831A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electronic
- dispensing device
- dosage dispensing
- counting assembly
- delay
- 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- Withdrawn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
-
- 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
- A61M15/00—Inhalators
- A61M15/009—Inhalators using medicine packages with incorporated spraying means, e.g. aerosol cans
-
- 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
- A61M15/00—Inhalators
- A61M15/0065—Inhalators with dosage or measuring devices
- A61M15/0068—Indicating or counting the number of dispensed doses or of remaining doses
- A61M15/008—Electronic counters
Definitions
- the present invention relates to dosage dispensing devices having means for recording the number of times the devices are used.
- dosage dispensing devices include metered dose inhalers and nasal sprays.
- Dosage dispensing devices are often used in the treatment of respiratory disorders such as asthma, both for relief of bronchospasm and for prophylactic treatment of acute attacks.
- therapy often needs to be taken regularly, especially when used prophylactically.
- Many asthmatics are not aware of the need for regular inhaler use, particularly when they are free of symptoms of asthma. Doses of regular medications are often missed, which may account for so-called treatment failures.
- assessment of compliance is a very important factor in the assessment of a drug's efficacy, particularly with prophylactic agents. It is possible that potentially useful respiratory compounds may have failed through poor compliance, rather than lack of efficacy. Assessment of patient compliance is therefore important both in routine clinical practice and in the clinical stages of drug dev 1opment.
- Another problem with dosage dispensing devices is that a patient may not become aware that a device is empty until it is required for use, for example for relief of severe bronchospasm.
- a dosage dispensing device with means for recording the number of times it has been used would be useful in the assessment of compliance by a physician, clinical researcher or patient and to let a patient know that the medicament is about to be exhausted so that a new dosage
- UBSTITUTESHEET dispensing device can be obtained in good time.
- ratchet wheel with a ratchet driving member, the ratchet wheel driving an indicating member in the form of a linear rack or rotatable wheel.
- the recording means can be more simply and conveniently provided by an electronic counting assembly.
- the present invention provides a dosage dispensing device comprising a housing for holding a medicament container from which measured amounts of medicament can be dispensed and having means for recording the number of times medicament is dispensed from the container characterised in that the recording means comprise an electronic counting assembly.
- the dosage dispensing device is an inhaler of the dry-powder type, for example as disclosed in US Patent 4524769, but having an electronic counting assembly.
- the dosage dispensing device comprises a housing which can support a medicament container having a discharge valve, the electronic counting assembly being actuated by relative movement between the container and the discharge valve whenever a measured amount of medicament is discharged.
- a dosage dispensing device can suitably be designed for oral, nasal, rectal or vaginal delivery.
- the electronic counting assembly comprises a power source, an electronic counter, a switch which is actuated by the relative movement between the container and the discharge valve to record a count on the electronic counter, and means for allowing a variable, but preset, delay-time between counts so that repeated actuations within said delay-time are not recorded.
- the switch is meant any device or assembly for completing or interrupting an electronic circuit.
- the circuit can be designed such that either completion or interruption of it records a count on the electronic counter.
- the switch has a contact arm which is normally in an open position but which is releasably closed by the relative movement between the container and discharge valve.
- the contact arm is normally in a closed position but is releasably opened bysaid relative movement.
- the switch is an assembly having a separate moveable conducting member so positioned such that said relative movement effects contact closure.
- the separate moveable conducting member can be an elastomeric switch of known type.
- the means for allowing the delay-time can be provided by a suitable RC (resistor/capacitor) network which can be designed by one skilled in the art to give a delay-time of for example 0.05 to 60 seconds, preferably 0.1 to 10 seconds.
- RC resistor/capacitor
- a 1 megohm resistor and a 3.3 microfarad capacitor can be used to provide a delay-time of about 3 seconds.
- a minimum time e.g. 10 seconds should elapse before a patient should receive a subsequent dose.
- Patient compliance can be simply assessed by using a dosage dispensing device of the present invention, having a RC network providing a suitable delay-time of 10 seconds, for example, which would only record dosages administered according to the recommended regimen.
- the electronic counting assembly may further comprise a second electronic counter and further means for allowing a variable, but preset, delay-time between counts so that repeated actuations within said delay-time are not recorded on the second electronic counter.
- Such means for allowing the delay-time is an RC network as hereinbefore described.
- the electronic counting assembly may therefore have a first electronic counter with an RC network providing a delay-time of between 3 and 60 seconds, for example
- the second counter would record all actuations and would therefore be of use in checking the quantity of medicament remaining whilst the first counter would be of use in assessing patient
- the means for providing the delay-time(s) can alternatively be provided by a suitable electronic logic circuit.
- the electronic counting assembly further comprises a reset switch which when it is closed resets the electronic counter to zero. This facilitates the resetting of the electronic counter whenever an aerosol container is replaced.
- the electronic counter is a low power consumption electro-mechanical counter or preferably is a liquid crystal display counter.
- the components of the electronic counting assembly are contained within an assembly housing which can be tailored releasably to fit commercially available dosage dispensing devices.
- the assembly housing is made of moulded plastics material and is integrally formed with the housing for the medicament container.
- the design of the assembly housing should allow easy fitting of the assembly components and replacement of a battery if one is used as a power source.
- the dosage unit comprises a cover for preventing unauthorised access to the electronic counting assembly in particular to the electronic counter(s) and the reset switch.
- the cover may be provided with a seal which would be broken whenever the cover is
- Figure 1 is an exploded view of a dosage inhaler.
- Figure 2 is a side view, partially in section, of an aerosol container resting in the dosage inhaler.
- Figure 3 is a side view, partially in section, of an aerosol container depressed fully into the dosage inhaler.
- Figure 4 is a circuit diagram of the electronic counting assembly having one electronic counter.
- Figure 5 is a circuit diagram of the electronic counting assembly having two electronic counters.
- Figure 6 is an exploded view of a nasal dosage dispenser.
- Figure 1 indicates how an electronic counting assembly can be attached to a commercially available dosage inhaler comprising a housing 1 with an aerosol container 2 containing for example at least 200 doses of medicament. Protruding through the housing 1 is attached a switch 3 which is part of the electronic counting assembly further comprising a liquid crystal display counter 4, battery 5 and resistor, capacitor and reset switch as more fully described in the circuit diagram of Figure 4.
- the electronic counting assembly is contained within an assembly housing comprising two parts 6a and 6b suitably made of perspex secured with screws as shown in
- a cover 7 made for example of black perspex can be secured to the assembly housing 6a by further screws which if desired can be sealed for example with wax to prevent unauthorised access to the electronic counting assembly.
- the switch 3 is positioned such that it's contact arm 8 is in an open position when the aerosol container 2 is resting within the housing 1.
- the aerosol container 2 is depressed into the housing 1 as shown in Figure 3. Downward movement of the aerosol container 2 causes the contact arm 9 of the switch 3 to be closed which results in a count being registered on the liquid crystal display counter 4.
- FIG 4 shows a circuit diagram of an electronic counting assembly comprising a 3 volt lithium manganese dioxide battery (e.g. DL 1620, Duracell®) , a liquid crystal display (LCD) counter (e.g. RS 343-442, supplied by RS Components Ltd. , Corby, England) , a contact to record counts, a contact for resetting the LCD counter and a RC network comprising a 1 megohm resistor and a 3.3 microfarad tantalum capacitor.
- the RC network ensures that after the initial count, further counts are inhibited by approximately 3 seconds.
- a current consumption of 15 microamps gives a life expectancy of the battery of 120 days, far in excess of the time in which 200 doses in the aerosol container are expected to be used under normal circumstances. The battery may be simply replaced when necessary.
- Figure 5 shows a circuit diagram of an electronic counting assembly having two electronic counters.
- SUBSTITUTE SHEET components of this assembly are as described in Figure 4 but further comprise a second LCD counter and another RC network comprising a 1 megohm resistor and a 100 nanofarad ceramic capacitor. This RC network ensures that after the initial count further counts on the second LCD counter are inhibited by approximately 0.1 seconds.
- Figure 6 shows a medicament container 2 to which can be attached a discharge valve 9.
- a metallic seal which forms part of the switch 3 of the electronic counting assembly.
- the medicament container 2 can be placed within a housing 1 suitably designed for nasal delivery.
- a ring containing contacts which forms the remaining part of the switch 3.
- the relative movement between the discharge valve 9 and the medicament container 2 brings the metallic seal into contact with the ring containing contacts which effects contact closure thereby causing a count to be registered on the LCD counter 4 which is contained in an assembly housing 6.
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- Pulmonology (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Veterinary Medicine (AREA)
- Hematology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Biophysics (AREA)
- Medical Preparation Storing Or Oral Administration Devices (AREA)
- Medicinal Preparation (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
Abstract
On décrit un dispositif doseur muni de moyens permettant d'enregistrer le nombre de fois que ledit dispositif a été utilisé. Les moyens prévus à cet effet sont représentés par un ensemble de comptage électronique.A metering device is described provided with means making it possible to record the number of times that said device has been used. The means provided for this purpose are represented by an electronic counting assembly.
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8924823 | 1989-11-03 | ||
GB8924823A GB8924823D0 (en) | 1989-11-03 | 1989-11-03 | Dosage inhalers |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0498831A1 true EP0498831A1 (en) | 1992-08-19 |
Family
ID=10665667
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19900916323 Withdrawn EP0498831A1 (en) | 1989-11-03 | 1990-10-31 | Dosage dispensing devices |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0498831A1 (en) |
JP (1) | JPH05501821A (en) |
GB (1) | GB8924823D0 (en) |
WO (1) | WO1991006334A1 (en) |
Families Citing this family (35)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9025654D0 (en) * | 1990-11-26 | 1991-01-09 | Riker Laboratories Inc | Device |
US5284133A (en) * | 1992-07-23 | 1994-02-08 | Armstrong Pharmaceuticals, Inc. | Inhalation device with a dose-timer, an actuator mechanism, and patient compliance monitoring means |
GB2272389B (en) * | 1992-11-04 | 1996-07-24 | Bespak Plc | Dispensing apparatus |
US5507277A (en) * | 1993-01-29 | 1996-04-16 | Aradigm Corporation | Lockout device for controlled release of drug from patient-activateddispenser |
US5505195A (en) * | 1993-09-16 | 1996-04-09 | Medtrac Technologies Inc. | Dry powder inhalant device with dosage and air flow monitor |
US5388572A (en) * | 1993-10-26 | 1995-02-14 | Tenax Corporation (A Connecticut Corp.) | Dry powder medicament inhalator having an inhalation-activated piston to aerosolize dose and deliver same |
US5388573A (en) * | 1993-12-02 | 1995-02-14 | Tenax Corporation | Dry powder inhalator medicament carrier |
US5564414A (en) * | 1994-05-26 | 1996-10-15 | Walker; William F. | Pressurized and metered medication dose counter on removable sleeve |
US5495848A (en) * | 1994-11-25 | 1996-03-05 | Nellcar Puritan Bennett | Monitoring system for delivery of therapeutic gas |
SE9404140D0 (en) * | 1994-11-29 | 1994-11-29 | Astra Ab | Dose indicating device |
US5544647A (en) * | 1994-11-29 | 1996-08-13 | Iep Group, Inc. | Metered dose inhalator |
US5622163A (en) * | 1994-11-29 | 1997-04-22 | Iep Group, Inc. | Counter for fluid dispensers |
US5809997A (en) * | 1995-05-18 | 1998-09-22 | Medtrac Technologies, Inc. | Electronic medication chronolog device |
US5890490A (en) * | 1996-11-29 | 1999-04-06 | Aylsworth; Alonzo C. | Therapeutic gas flow monitoring system |
GB2320489A (en) | 1996-12-20 | 1998-06-24 | Norton Healthcare Ltd | Inhaler dose counter |
US5911219A (en) * | 1997-04-18 | 1999-06-15 | Aylsworth; Alonzo C. | Therapeutic gas flow meter and monitor |
DE69918267T2 (en) | 1998-01-16 | 2005-07-28 | 1263152 Ontario Inc., London | DISPLAY DEVICE FOR USE WITH A DISPENSER |
SE9801122D0 (en) * | 1998-03-30 | 1998-03-30 | Astra Ab | Inhalation device |
US6082358A (en) | 1998-05-05 | 2000-07-04 | 1263152 Ontario Inc. | Indicating device for aerosol container |
US6260549B1 (en) | 1998-06-18 | 2001-07-17 | Clavius Devices, Inc. | Breath-activated metered-dose inhaler |
FR2846453B1 (en) * | 2002-10-28 | 2005-01-28 | Valois Sas | ELECTRONIC DISPLAY DEVICE AND FLUID PRODUCT DELIVERY DEVICE HAVING SUCH A DISPLAY DEVICE |
US20050028815A1 (en) * | 2003-07-23 | 2005-02-10 | Deaton Daniel M. | Apparatus for electronic dosage counter |
US7621273B2 (en) | 2003-10-28 | 2009-11-24 | Trudell Medical International | Indicating device with warning dosage indicator |
US7100530B2 (en) | 2003-12-15 | 2006-09-05 | Trudell Medical International, Inc. | Dose indicating device |
CA2899340A1 (en) | 2005-01-20 | 2006-07-27 | Trudell Medical International | Dispensing device |
BRPI0614852B1 (en) * | 2005-08-24 | 2019-06-18 | Boehringer Ingelheim International Gmbh | SPRAY |
US8141550B2 (en) | 2006-08-01 | 2012-03-27 | Trudell Medical International | Dispensing device |
DE102006036962A1 (en) | 2006-08-01 | 2008-02-14 | Ing. Erich Pfeiffer Gmbh | Dosing device for a medium |
US8528790B2 (en) * | 2007-12-06 | 2013-09-10 | Joseph S. Kanfer | Dispensing system with magnet and coil for power generation |
CA2905402C (en) | 2008-10-22 | 2017-02-28 | Trudell Medical International | Modular aerosol delivery system |
DE102010024912B4 (en) | 2010-06-15 | 2013-02-28 | Aptar Radolfzell Gmbh | inhalator |
DE102010042007B4 (en) | 2010-10-05 | 2013-04-04 | Aptar Radolfzell Gmbh | Discharge device for pharmaceutical media |
DE102012211576B4 (en) * | 2012-07-04 | 2015-02-12 | Johnson Matthey Catalysts (Germany) Gmbh | Apparatus and method for the management and provision of the smallest amount of energy generated by a power generation unit |
DE102015004073B3 (en) * | 2015-03-30 | 2016-07-07 | Meda Ab | Pump cap for a pharmaceutical container, insert for a pump cap for a pharmaceutical container, pharmaceutical container with the pump cap, and computer program product |
ES2913089T3 (en) | 2017-02-20 | 2022-05-31 | Presspart Gmbh & Co Kg | metered dose inhaler |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DK471380A (en) * | 1979-11-07 | 1981-05-08 | Sterwin Ag | DOSAGE INDICATOR FOR INHALER |
DK481884D0 (en) * | 1984-10-09 | 1984-10-09 | Karl Holm | MEDICAL ORAL OR SWALLOW SPRAY APPLIANCES |
EP0254391A1 (en) * | 1986-04-25 | 1988-01-27 | Glaxo Group Limited | Indicating device for aerosol dispensers |
-
1989
- 1989-11-03 GB GB8924823A patent/GB8924823D0/en active Pending
-
1990
- 1990-10-31 WO PCT/GB1990/001665 patent/WO1991006334A1/en not_active Application Discontinuation
- 1990-10-31 EP EP19900916323 patent/EP0498831A1/en not_active Withdrawn
- 1990-10-31 JP JP51507890A patent/JPH05501821A/en active Pending
Non-Patent Citations (1)
Title |
---|
See references of WO9106334A1 * |
Also Published As
Publication number | Publication date |
---|---|
GB8924823D0 (en) | 1989-12-20 |
WO1991006334A1 (en) | 1991-05-16 |
JPH05501821A (en) | 1993-04-08 |
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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: 19920423 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): CH DE FR GB IT LI NL |
|
17Q | First examination report despatched |
Effective date: 19931118 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: O'CONNOR, STEPHEN, ANTHONY, PETER Inventor name: BURNS, COLIN, PETER Inventor name: HARE, JOHN, FRANCIS |
|
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: 19950503 |