DK174347B1

DK174347B1 - Removable medium dispensing apparatus

Info

Publication number: DK174347B1
Application number: DK199700924A
Authority: DK
Inventors: Karl-Heinz Fuchs; Stefan Ritsche
Original assignee: Pfeiffer Erich Gmbh & Co Kg
Priority date: 1995-02-09
Filing date: 1997-08-11
Publication date: 2002-12-16
Also published as: FI973263A; EP0810906B1; NO973664L; AU692362B2; EP0810906A1; CA2212307A1; FI111815B; ES2138321T3; JP3776125B2; JPH10513400A; CA2212307C; AU4787196A; FI973263A0; NO973664D0; DK92497A; WO1996024439A1; BR9607514A

Description

DK 174347 B1DK 174347 B1

ANVENDELSESOMRÅDE OG KENDT TEKNIKFIELD OF APPLICATION AND PRIOR ART

Opfindelsen angår et afgivelsesapparat for flydbart medium med et basislegeme til at modtage et mediereservoir og en drivstempelpumpe, som har et pumpestempel, som er forskydeligt i et stempel mellem en startposition og en pumpeslagsslutposition samt et pumpe-5 kammer, som er forbundet til en afgivelsesåbning i apparatet ved hjælp af en afgivelseska nal og begrænset af en pumpecylinder, som også danner mediereservoiret og indeholder pumpestemplet.BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a fluid medium dispensing apparatus having a base body for receiving a media reservoir and a drive piston pump having a pump piston slidable in a piston between a starting position and a pump stroke end position as well as a pump chamber connected to a delivery port in the apparatus by means of a delivery channel and limited by a pump cylinder, which also forms the media reservoir and contains the pump piston.

Fra WO 91/13689 kendes et afgivelsesapparat til enkelt anvendelse i partielle udslagihen-hold til indledningen til krav 1, 12 og 14.From WO 91/13689, a single-use dispensing apparatus is known in partial knockout states for the preamble of claims 1, 12 and 14.

10 Et sådant afgivelsesapparat er beskrevet i europæisk patent nr. 311 863 (= US patent 4 964 069) fra samme ansøger som den foreliggende opfindelse. Patentbeskrivelsen angiver og beskytter pumpecylinderen og et elastisk stop, som er fremstillet på samme måde som et snap-låsemiddel, som samvirker på en sådan måde, at et specifikt aktiveringstryk, før afgivelsen af et partielt udslag, skal påføres af operatøren, således at afgivelsen af væsken 15 efter overvindelse af dette trykpunkt finder sted med en vis minimumkraft og hastighed.Such a dispensing apparatus is described in European Patent No. 311,863 (= US Patent 4,964,069) from the same applicant as the present invention. The patent specification discloses and protects the pump cylinder and an elastic stop made in the same manner as a snap-locking agent which cooperates in such a way that a specific activation pressure, prior to the release of a partial discharge, must be applied by the operator so that the liquid 15 after overcoming this pressure point takes place at a certain minimum force and speed.

Denne konstruktion sikrer, f.eks. ved forstøvning af mediet, at trykket fra det første øj eblik er tilstrækkeligt til forstøvningsformål, og at pumpen aktiveres op til dens slutning, dvs. udfører det fulde udslag og hele indholdet af dets mediereservoir, som samtidigt danner pumpecylinderen, udtømmes i ét eller to slag. Sådanne enkelt- eller dobbeltdoserings- eller 20 proportioneringanordninger er fordelagtige til uddeling af medikamenter, som er særlig kritiske med hensyn til proportionering, forurening, præservering eller andre kriterier.This construction ensures, e.g. by atomizing the medium, that the pressure from the first sight is sufficient for spraying purposes and that the pump is activated up to its end, i.e. performs the full discharge and the entire contents of its media reservoir, which simultaneously forms the pump cylinder, discharges in one or two strokes. Such single or double dosing or proportioning devices are advantageous for dispensing drugs which are particularly critical in proportion, contamination, preservation or other criteria.

Ansøgerens WO 92/00812 angiver også anvendelsen af mediereservoir for et enkelt afgivelsesudslag, som er tætnet med en prop, som samtidigt tjener som stemplet, hvilken prop perforeres af en nål til aktiveringsformål. Mediereservoiret modtages i en muffe, som har 25 udvendige fremspring, og som samvirker med tilsvarende fremspring på indersiden af et husbasislegeme på samme måde som en snapfastgørelse. Ved aktivering er det for det første nødvendigt at overvinde den statiske friktion, før nævnte vulster glider på siderne, mod hvilke de går i indgreb, således at et trykpunkt skal overvindes.Applicant WO 92/00812 also discloses the use of a media reservoir for a single release ridge which is sealed with a plug which simultaneously serves as the plunger, which is perforated by a needle for activation purposes. The media reservoir is received in a sleeve which has 25 external projections and which cooperates with corresponding projections on the inside of a housing base body in the same manner as a snap attachment. Upon activation, it is first necessary to overcome the static friction before the beads slip on the sides against which they engage, so that a pressure point must be overcome.

2 DK 174347 B12 DK 174347 B1

PROBLEM OG LØSNINGPROBLEM AND SOLUTION

5 Formålet med opfindelsen er således yderligere at udvikle et sådant afgivelsesapparat, især med henblik på at forhindre en utilsigtet dobbeltanvendelse eller ufuldstændig aktivering, mens de resulterende forurenings- eller proportioneringsproblemer undgås.The object of the invention is thus to further develop such a dispensing apparatus, in particular with a view to preventing accidental double use or incomplete activation, while avoiding the resulting pollution or proportioning problems.

Det pille-afslørende lukke ifølge opfindelsen kan i en udførelsesform for opfindelsen udformes med mindst en materialebro mellem mindst en pumpedel, som er bevægelig med 10 pumpecylinderen og en husdel, som er forbundet til basislegemet. Materialebroen er fordelagtigt udformet af en konstruktion i ét stykke af huset og pumpedelene.The pellet revealing closure of the invention may in one embodiment of the invention be formed with at least one material bridge between at least one pump portion movable by the pump cylinder and a housing portion connected to the base body. The material bridge is advantageously formed by a one-piece construction of the housing and pump parts.

Derfor frembringes et forudbestemt brudpunkt mellem de indbyrdes bevægelige dele af afgivelsesapparatet, hvis intakthed er et sikkert tegn på, at fyldningsladningen af mediereservoiret er uåbnet og ubrugt. Brugeren kan fastslå dette, f.eks. optisk eller ved en let 15 drejning af aktiveringsdelen. For at lette undersøgelse kan vinduesudskæringer være tilvejebragt eller dele af pumpen kan være fremstillet af transparent materiale. Det er også muligt at anvende et plastmateriale, som misfarves i tilfælde af en brydningsdeformation.Therefore, a predetermined breaking point is created between the mutually moving parts of the dispensing apparatus, the integrity of which is a sure sign that the filling charge of the media reservoir is unopened and unused. The user can ascertain this, e.g. optically or by a slight rotation of the actuating member. For ease of examination, window cuts may be provided or parts of the pump may be made of transparent material. It is also possible to use a plastic material which discolors in the event of a deformation of the rupture.

Mærker på den bevægelige del og huset vil også være muligt. Materialebroen er fortrinsvis dannet mellem en aktiveringsmuffe, som indeholder og eventuelt delvis modtager pumpe-20 cylinderen, som tjener som mediereservoiret og en indre del af en basishusdel, som er forsynet med aktiveringsskuldre. Aktiveringsskuldrene tjener som en understøtning for to fingre, medens tommelfingeren trykket på aktiveringsmuffen. En passende kraft kan påføres med henblik på at forskyde eller afrive materiåledelen. Som følge af den påførte kraft, frembringes samtidigt en passende aktiveringskraft til en pålidelig aktivering af pumpen.Marks on the moving part and housing will also be possible. The material bridge is preferably formed between an actuating sleeve containing and possibly partially receiving the pump cylinder serving as the media reservoir and an inner portion of a base housing portion provided with actuating shoulders. The activation shoulders serve as a two-finger support while the thumb is pressed on the activation sleeve. Appropriate force may be applied to displace or tear the material portion. Due to the applied force, at the same time, a suitable activating force is produced for a reliable activation of the pump.

3 DK 174347 B13 DK 174347 B1

Materialebroeme kan f.eks. være tilvejebragt på den udvendige periferi af aktiveringsmuffen og mellem sidstnævnte og en ring, som omslutter muffen, som igen er fastgjort til den over for liggende del, dvs. til huset, ved indsnapning. Dette gør det muligt at fremstille aktiveringsmuffen adskilt fra huset. Imidlertid kunne materialebroeme også være formet på 5 huset og det cirkulære fastgørelseselement kunne være fastgjort til den over for liggende bevægelige del, pumpecylinderen eller aktiveringscylinderen ved forbindelse eller på en eller anden anden måde.Material bridges can e.g. be provided on the outer periphery of the actuating sleeve and between the latter and a ring enclosing the sleeve which is in turn secured to the opposite part, i. to the house, by snap. This makes it possible to manufacture the activation sleeve separately from the housing. However, the material bridges could also be formed on the housing and the circular fastening element could be attached to the opposite movable part, the pump cylinder or the activation cylinder by connection or in some other way.

Ifølge et træk ved opfindelsen omslutter elementet, som er formet på pumpedelen via materialebroeme, et fremspring af huset fra ydersiden. I dette tilfælde dækker elementet 10 det forbindende mellemrum mellem pumpedelen og huset helt og tilvejebringer ikke blot en optisk og funktionel forening mellem pumpedelen og huset, men forhindrer også muligheden for at manipulere med den pille-afslørende forbindelse. Der bør fortrinsvis være sørget for, at indsnapningsforbindelsen er sikret mod afbrækning, således at den ødelægges, hvis man forsøger at trække pumpecylinderen bort fra huset. I dette tilfælde skal materiale-15 broerne og det pille-afslørende lukke brydes.According to a feature of the invention, the element formed on the pump part via the material bridges encloses a projection of the housing from the outside. In this case, the element 10 completely covers the connecting space between the pump part and the housing and not only provides an optical and functional association between the pump part and the housing, but also prevents the possibility of tampering with the pill-detecting connection. Preferably, it should be ensured that the snap-in connection is secured against breakage so that it is destroyed if attempting to pull the pump cylinder away from the housing. In this case, the material-15 bridges and the pill-revealing closure must be broken.

Det er især foretrukket, at elementet er en ring med et L-formet tværsnit, bestående af en i det væsentlige radial bundringdel og en tilstødende kappe. Indersiden af kappen er fortrinsvis forsynet med et snapprofil. Dette snapprofil kan samvirke med et tilsvarende formet profil ved ringen eller et ringsegmentformet fremspring på snapvirkende måde.It is particularly preferred that the member is a ring with an L-shaped cross-section, consisting of a substantially radial bottom ring member and an adjacent sheath. The inside of the sheath is preferably provided with a snap profile. This snap profile may cooperate with a corresponding shaped profile at the ring or a ring segment shaped projection in a snap acting manner.

20 Disse og yderligere træk kan samles fra kravene, beskrivelsen og tegningen og de individuelle træk, både enkeltvis og i form af underkombinationer, kan implementeres i en udfø-relsesform ifølge opfindelsen og i andre områder og kan repræsentere fordelagtige, uafhængigt beskyttelige konstruktioner, for hvilke beskyttelsen hermed kræves.These and further features may be assembled from the claims, description and drawings, and the individual features, both individually and in the form of subcombinations, may be implemented in an embodiment of the invention and in other areas and may represent advantageous, independently protective structures for which the protection required.

KORT BESKRIVELSE AF TEGNINGSFIGURERNEBRIEF DESCRIPTION OF THE DRAWINGS

DK 174347 B1 4 På tegningen viser figur 1 til 5, for bedre forståelse, en tidligere udformning af den foreliggende opfindelse, med henblik på at forklare nogle grundtræk, som anvendes i den foreliggende opfindelse, nemlig fig. 1 et længdesnit gennem et afgivelsesapparat med et pille-afslørende lukke, 5 fig. 2 et billede i retningen af pilen II i fig. 1, fig. 3 en detalje fra figur 2, men vist i snit, fig. 4 et snit langs linien IV i fig. 2, fig. 5 et delvis længdesnit gennem en udførelsesform med en pille-afslørende lukkering, en foretrukket udførelsesform for opfindelsen er beskrevet mere detaljeret herefter i for-10 bindelse med figur 6 og 7 på tegningen, hvor fig. 6 er et længdesnit gennem opfindelsens udførelsesform, og fig. 7 et topbillede af udførelsesformen i fig. 6.BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1 to 5 show, for better understanding, an earlier embodiment of the present invention, to explain some basic features used in the present invention, namely FIG. 1 is a longitudinal section through a dispenser with a pill-detecting closure; FIG. 2 is a view in the direction of arrow II in FIG. 1, FIG. 3 is a detail of FIG. 2, but shown in section; FIG. 4 is a section along line IV of FIG. 2, FIG. 5 is a partial longitudinal section through an embodiment with a pellet revealing closure; a preferred embodiment of the invention is described in more detail hereinafter in connection with FIGS. 6 and 7 in the drawing, wherein FIG. 6 is a longitudinal section through the embodiment of the invention; and FIG. 7 is a top view of the embodiment of FIG. 6th

BESKRIVELSE AF UDFØRELSESFORMERDESCRIPTION OF EMBODIMENTS

Et afgivelsesapparat 11 vist i fig. 1 har et to-delt basislegeme 12. Det indeholder en basis-15 husdel 13, som har en epaulette-lignende form med to aktiverende skuldre 14 og en kappe 15 forbundet dertil. Basishusdelen er flad eller flad-oval og har sin største udstrækning i tegningens plan, hvorimod den har en mindre dimension på tværs deraf. Kappen 15 er længere på venstre og højre side i fig. 1 og har på sine to sider, groft talt, parallelt med tegningens plan en udskæring 16, som er åben til bunden.A dispensing apparatus 11 shown in FIG. 1 has a two part base body 12. It contains a base 15 housing part 13 which has an epaulette-like shape with two activating shoulders 14 and a sheath 15 connected thereto. The base housing portion is flat or flat-oval and has its greatest extent in the plan of the drawing, whereas it has a smaller dimension across it. The sheath 15 is further on the left and right sides of FIG. 1 and, on its two sides, roughly in parallel with the plane of the drawing, has a cutout 16 which is open to the bottom.

5 DK 174347 B1 På basishusdelen 13 er i ét stykke injektionsstøbt en aktiveringsmuffe 17, nemlig på den nederste, inderside af en konnektor 18, som rager op fra delen 13. Ét-stykke-forbindelsen mellem basishusdelen 13 og aktiveringsmuffen 17 finder sted ved hjælp af materialebroer 19, som vist i fig. 2 til 4. Mellemrummet 20 mellem den udvendige kant af en øvre flange 5 21 af aktiveringsmuffen 17 og et indre flangefremspring 22 i det indre af forbindelsen 18 er broforbundet i den viste udførelsesform ved tre tynde forbindelsesbaner, som har en trekantet form, og hvis spids er formet på banen 22, for derved at danne forudbestemte brudpunkter. Ud fra det fremstillingsmæssige standpunkt kan de som følge af tilsvarende små fordybninger, som næppe overstiger dimensionerne af en normal grat, dannes på skil-10 lefladen mellem to plastinjektionsstøbte dele, som på den ene side danner rummet 23 i det indre af kappen 15 og på den anden side rummet i konnektoren 18. Tilsvarende er tre ensartede, periferielt fordelte materialebor 19 anbragt i et plan dannet af indersiden og bunden af aktiveringsskuldrene 14 på den ene side og den øvre kant af flangen 21 på den anden.5 DK 174347 B1 On the base housing part 13, in one injection molded an activation sleeve 17, namely on the lower, inside of a connector 18 which protrudes from the part 13. The one-piece connection between the base housing part 13 and the activation sleeve 17 takes place by means of material bridges 19, as shown in FIG. 2 to 4. The gap 20 between the outer edge of an upper flange 5 21 of the actuating sleeve 17 and an inner flange projection 22 in the interior of the connection 18 is bridged in the illustrated embodiment by three thin connection paths having a triangular shape and having a pointed tip. is formed on the web 22, thereby forming predetermined breaking points. From the manufacturing standpoint, due to correspondingly small indentations which hardly exceed the dimensions of a normal grate, they can be formed on the interface between two plastic injection molded parts which, on the one hand, form the space 23 in the interior of the casing 15 and on the other, the space in the connector 18. Similarly, three uniform, peripherally spaced material bores 19 are arranged in a plane formed by the inside and bottom of the activation shoulders 14 on one side and the upper edge of the flange 21 on the other.

Aktiveringsmuffen 17 har indre ribber 24, som groft taget optager 3/4 af muffens længde, 15 betragtet fra dens bund 25. På samme er understøttet bunden 26 af en pumpecylinder 27, som har formen af en groft taget cylindrisk, bundlukket muffe fremstillet af glas og med en øvre sideflange 28. Den danner samtidigt reservoiret for mediet 29, som skal afgives og pumpecylinderen. Dens indre rundtgående overflade danner som føl ge deraf stempelbanen 30 for et stempel 31, som er fremstillet i form af en stempelprop af gummi eller tilsva-20 rende elastisk materiale. I længdesnit har den en H-form og er et tykvægget rør, hvis ydre kappe danner stempelbaner, med en central lukkebane 32, som på tværs lukker rørets indre, således at fremspring 33 er dannet, som groft taget kan være koniske.The actuating sleeve 17 has inner ribs 24 which roughly take up 3/4 of the length of the sleeve, 15 viewed from its bottom 25. Similarly, the bottom 26 is supported by a pump cylinder 27 which is in the form of a roughly cylindrical bottom closure made of glass. and with an upper side flange 28. It simultaneously forms the reservoir for the medium 29 to be dispensed and the pump cylinder. Its inner circumferential surface, as a result, forms the piston web 30 for a piston 31 which is made in the form of a rubber stopper or similar elastic material. In longitudinal section, it has an H-shape and is a thick-walled tube, the outer sheath of which forms piston webs, with a central closure web 32 which transversely closes the interior of the tube so that projections 33 are formed which can be roughly tapered.

Stempelproppen 31 er anbragt på det hermetisk lukkede medium 29. Fyldning finder sted med eller uden luftmedføringer. Pumpecylinderen indsættes med let tryk i den øverste del 25 af aktiveringsmuffen og udstrækkes med sin største del over og forbi aktiveringskuldrene gennem konnektoren 18 og ind i en konnektordel 34, som også kan være fremstillet som en adapter. Den er en fingerlignende del, som har et i det væsentlige cylindrisk eller let konisk skaft med en øverste, sfærisk runding forløbende i retning af pumpeaksen 35.1 midten DK 174347 B1 6 af nævnte runding er afgivelsesåbningen 36 tilvejebragt i form af en konventionel sprøjtedyse. Imidlertid kunne afgivelsesåbningen også være tilvejebragt til en eller anden anden afgivelsesform, f.eks. til en doseret afgivelse af en væske eller et passende medium, eller kunne have andre former for derved at tillade bedre tilpasning af afgivelsen til formen af 5 en eller anden legemsåbning. Det er derfor også fordelagtigt at fremstille konnektordelen 34 separat fra basishusdelen og være fastgjort dertil med en snapfastgørelse 37 med f.eks. tre flige, som går i forbindelse i åbninger og forsynet med et modhage-lignende hoved, idet konnektordelen er centreret på konnektoren 18. For at forhindre en fjernelse af konnektordelen 34 kan snapfastgørelsen være fremstillet på selvlåsende måde. En beskyttende muffe 10 38 beskytter konnektordelen mod forurening.The plunger stopper 31 is disposed on the hermetically sealed medium 29. Filling takes place with or without air entrainments. The pump cylinder is lightly inserted into the upper portion 25 of the actuating sleeve and extends with its largest portion above and past the actuating shoulders through the connector 18 and into a connector member 34, which may also be manufactured as an adapter. It is a finger-like portion having a substantially cylindrical or slightly tapered shaft with an upper, spherical rounding extending in the direction of the pump axis 35.1. The center of said rounding is the discharge opening 36 provided in the form of a conventional spray nozzle. However, the delivery opening could also be provided for some form of delivery, e.g. for a dosed delivery of a liquid or suitable medium, or could have other forms thereby allowing better adaptation of the delivery to the shape of some body opening. Therefore, it is also advantageous to manufacture the connector part 34 separately from the base housing part and be secured thereto with a snap fastener 37 with e.g. three tabs engaging in openings and provided with a barbed-like head, the connector portion being centered on connector 18. To prevent removal of connector portion 34, the snap attachment may be made in a self-locking manner. A protective sleeve 10 38 protects the connector portion from contamination.

I det indre af konnektordelen finde en stempelstangdel 39, som har en indre afgivelseskanal 40 og er indsat i muffen 41 formet indvendigt på den øverste ende af konnektordelen 34.1 nævnte stempelstangdel 39 er indsat en vædder 42 i form af en nedad skråt afskåret, hul stålnål, f.eks. ved injektion eller presning ind i en åbning tilvejebragt med tilsvarende 15 holderibber.In the interior of the connector portion is found a piston rod portion 39 which has an inner delivery channel 40 and inserted into the sleeve 41 formed internally on the upper end of the connector portion 34.1. A plunger rod portion 39 is inserted with a ram 42 in the form of a downwardly cut hollow steel needle. eg. by injection or pressing into an orifice provided with corresponding 15 retaining ribs.

Med undtagelsen af stålnålen 42, stempelproppen 31 fremstillet af gummimaterialer og glaspumpecylinder/mediumreservoiret er alle pumpedele plastinjektionsstøbninger.With the exception of the steel needle 42, the plunger stopper 31 made of rubber materials and the glass pump cylinder / medium reservoir, all pump parts are plastic injection molds.

Under fremstilling i komponenten, som omgiver basishusdelen 13 og aktiveringsmuffen 17, indsættes pumpecylinderen 27 ovenfra i beholderen 43, som er dannet i aktiverings-20 muffen 17. Nævnte cylinder 27 indeholder mediet 29 tæt lukket gennem stempelproppen 31.During manufacture in the component surrounding the base housing part 13 and the actuating sleeve 17, the pump cylinder 27 is inserted from above into the container 43 formed in the actuating sleeve 17. Said cylinder 27 contains the medium 29 tightly closed through the plunger stopper 31.

Dette efterfølges af monteringen af konnektordelen, hvorpå stempelstangdelen og vædderen er blevet forud samlet og den går i indgreb' i basishusdelen og bliver fastgjort via snapfastgørelsen 37. Efter således at have fastgjort beskyttelsesmuffen 38 er afgivelsesap-25 paratet samlet. Til brugsformål optages afgivelsesapparatet efter brugerens Qemelse af den beskyttende muffe 38 mellem tre fingre, idet to fingre hviler på skuldrene 14 og tommel- 7 DK 174347 B1 fingeren på bunden 25 af aktiveringsmuffen 17. Tommelfingeren går i indgreb i den vindueslignende udskæring 16 og har som følge deraf en passende aktiveringsfri gang. Afgivelsesåbningen 36 bliver rettet på det tilsvarende punkt og ved et effektfuldt tryk på aktiveringsmuffen opbygges aktiveringstrykket til en sådan udstrækning, at de forudbestemte 5 brudpunkter dannet af materialebroeme 19 trækker eller forskyder, og aktiveringsmuffen kan bevæges opad sammen med pumpecylinderen. Som et resultat af den tidligere, effektfulde trykopbygning finder dette sted med en høj hastighed, som sikrer en hurtig ydelse af afgivelseslag finder sted. Pumpecylinderen bevæges opad mod vædderen 42, således at sidstnævnte gennemtrænger den centrale bane 32 i stempelproppen, men som et resultat 10 af stempelpropmaterialets elasticitet umiddelbar genlukkes på den udvendige side. Kun gennem den indvendige kanal i vædderen, som er udformet som en hul nål, kan mediet undvige opad gennem afgivelseskanalen 40 og afgivelsesåbningen 36 og bliver afgivet der på sprøjtet eller tilsvarende proportioneret måde. Den nedre kant af stempelstangdelen 39 kan ramme på den øvre side af stempelproppen og som følge deraf frembringe en direkte 15 tiykforbindelse med stemplet, som løber nedad langs stempelbanen 30 og leder mediet til afgivelsesåbningen. Længden af nålen bør være således, at den ikke rager over den nedre grænse af stempelproppen 31, således at en næsten fuldstændig afgivelse af det under visse omstændigheder meget kostbare medium sikres.This is followed by the mounting of the connector portion, upon which the piston rod portion and the ram have been pre-assembled and engaged in the base housing portion and secured via the snap fastener 37. After thus securing the protective sleeve 38, the dispensing apparatus is assembled. For use, the dispensing apparatus is received after the user's removal of the protective sleeve 38 between three fingers, two fingers resting on the shoulders 14 and the thumb on the bottom 25 of the activation sleeve 17. The thumb engages the window-like cut 16 and has as consequently a suitable activation-free passage. The delivery opening 36 is directed to the corresponding point and, at an effective pressure on the actuating sleeve, the actuating pressure is built up to such an extent that the predetermined 5 breaking points formed by the material bridges 19 pull or displace and the actuating sleeve can be moved upwards together with the pump cylinder. As a result of the earlier, effective pressure build-up, this takes place at a high rate, which ensures a rapid delivery of the release layer takes place. The pump cylinder moves upwardly against the ram 42 so that the latter penetrates the central web 32 of the piston plug, but as a result 10 of the piston plug material's elasticity is immediately resealed on the outside. Only through the inner channel of the ram, which is formed as a hollow needle, can the medium dodge upwardly through the delivery channel 40 and the discharge opening 36 and be discharged there in the syringe or similarly proportioned manner. The lower edge of the piston rod portion 39 can strike on the upper side of the piston plug and, as a result, provide a direct pressure connection with the piston which runs down the piston path 30 and guides the medium to the delivery opening. The length of the needle should be such that it does not extend beyond the lower limit of the plunger stopper 31 so as to ensure a nearly complete delivery of the very expensive medium in certain circumstances.

Således tilbyder afgivelsesapparatet en mulighed for at afgive følsomme og kostbare mate-20 rialer på planlagt og nøje doseret måde. Genne det pille-afslørende lukke, som samvirker med materialedestruktion, er det muligt til ethvert tidspunkt at undersøge intaktheden, og det sikres, at der er en fuldstændig afgivelse af mediet med et passende aktiveringstryk. Apparatet er simpelt at fremstille og anbringe, mens det let kan tilpasses til forskellige omstændigheder, f.eks. ved forskellige adapterforme. Efter aktivering er enheden omfattende 25 pumpecylinderen 27 og aktiveringsmuffen løs og kan eventuelt fjernes i den nedadgående retning. Pumpecylinderen 27 med pumpeproppeh 31 kan fjernes, således at det øvrige, med undtagelsen af den lille nål, er fremstillet af én type materiale, eventuelt plast og kan passende kasseres.Thus, the delivery apparatus offers an opportunity to deliver sensitive and costly materials in a planned and carefully dosed manner. Through the pill-detecting closure, which cooperates with material destruction, it is possible to examine the intact at any time, and it is ensured that there is a complete release of the medium with an appropriate activation pressure. The apparatus is simple to manufacture and position while easily adaptable to various circumstances, e.g. for different adapter forms. After actuation, the unit comprising the pump cylinder 27 and the actuating sleeve is loose and can optionally be removed in the downward direction. The pump cylinder 27 with pump stopper 31 can be removed so that the rest, with the exception of the small needle, is made of one type of material, possibly plastic and can be suitably discarded.

DK 174347 B1 8DK 174347 B1 8

Fig. 5 viser i længdesnit en detalje ved en udførelsesform, i hvilken huset 13 ogkonnektor-delen 34 er fremstillet i ét stykke. De samme henvisningstal anvendes til de samme dele og kan henvises til den tidligere beskrivelse af delene og deres funktion.FIG. 5 shows in longitudinal section a detail of an embodiment in which the housing 13 and the connector part 34 are made in one piece. The same reference numbers are used for the same parts and can be referred to the previous description of the parts and their function.

På aktiveringsmuffen 17, som modtager beholderen 27, er et fastgørelseselement 60 i form 5 af en hel rund ring med et L-formet tværsnit tilvejebragt på ydersiden. Den er forbundet til aktiveringsmuffen 17 med flere materialebroer 19, som er således konstrueret og dimensioneret, at de trækkes bort under påvirkningstrykket og derfor adskiller ringen fra akti-veringsmuffen. Fastgørelseselementet 60, aktiveringsmuffen 17 er sprøjtestøbt af plast i ét stykke.On the actuating sleeve 17, which receives the container 27, a fastening element 60 in the form 5 of an entire round ring with an L-shaped cross section is provided on the outside. It is connected to the actuating sleeve 17 with a plurality of material bridges 19, which are designed and dimensioned to be pulled away under the impact pressure and therefore separate the ring from the actuation sleeve. The fastener 60, the actuating sleeve 17 are one-piece plastic injection molded.

10 Fastgørelseselementet 60 er fastgjort til huset 13 ved en snapforbindelse 61. Dette fastgørelseselement er centreret med dets aksiale ben på indersiden af konnektordelen 34, hvorimod det udadrettede ben låser i en indtrykning ved overgangen mellem aktiveringsskulderen 14 og konnektordelen 34.The fastener 60 is secured to the housing 13 by a snap connection 61. This fastener is centered with its axial legs on the inside of connector 34, whereas the outward leg locks in an impression at the transition between the actuating shoulder 14 and connector 34.

Under samling indføres aktiveringsmuffen sammen med beholderen 27, som danner pum-15 pecylinderen. Et samlingsværktøj kan presse den nederste forbindelsesside 63 af aktiveringselementet 60 i fig. 5, således at indgrebet aflåseforbindelsen 61 finder sted uden risiko for beskadigelse af det pille-afslørende lukke, dannet ved materialebroeme 19. Hvis brugeren imidlertid bevæger muffen opad, afrives materialebroeme 19 og aktiveringsmuffen kan, sammen med pumpecylinder/beholderen 27 udføre pumpeslaget på den tidligere 20 beskrevne måde. Aktiveringsmuffen 17 styres på den ene side i det cirkulære fastgørelseselement 60 (mellem afrivningsmaterialebroeme) og på den anden side på de indre baner 62 af konnektordelen 34. En ydre flange af beholder/pumpecylinderen 27 er også styret på denne måde, hvilket forhindrer vipning af aktiveringsmidleme. Materialebroeme 19 kan også være fremstillet som spalte eller gennemgående filmforbindelser.During assembly, the actuating sleeve is inserted together with the container 27 which forms the pump cylinder. An assembly tool can push the lower connection side 63 of the actuating element 60 of FIG. 5, so that the engagement of the locking connection 61 takes place without the risk of damage to the pill-detecting closure formed by material brakes 19. However, if the user moves the sleeve upwards, material brakes 19 are released and the activation sleeve can, together with the pump cylinder / container 27, perform the pump stroke on the former. 20. The actuating sleeve 17 is controlled on one side of the circular fastener 60 (between the tear material bridges) and on the other hand on the inner webs 62 of the connector part 34. An outer flange of the container / pump cylinder 27 is also controlled in this way, which prevents tilting of the actuating means. . The material bridges 19 may also be made as slit or through film joints.

25 Fastgørelseselement 60 har en vis grad af aksial og radial fri gang i låseforbindelsen 61.Fastener 60 has a certain degree of axial and radial clearance in the lock connection 61.

Dette går det muligt tilsigtet eller utilsigtet at dreje aktiveringsmuffen 17 uden at ødelægge 9 DK 174347 B1 det pille-afslørende lukke. Imidlertid skal låseforbindelsen være tilstrækkelig stærk til at det pille-afslørende lukke flænges ved aftrækning af aktiveringsmuffen 17 i den nedadgående retning. Dette sikrer, at der ikke har været noget uønsket manipulation med indholdet af proportioneringsanordningen.This makes it possible to intentionally or unintentionally rotate the actuating sleeve 17 without destroying the pill-detecting closure. However, the locking connection must be sufficiently strong for the pill-detecting closure to be flanged by pulling the actuation sleeve 17 in the downward direction. This ensures that there has been no unwanted manipulation with the content of the proportioning device.

5 Således er der blevet tilvejebragt et pille-afslørende lukke, som kræver én højere, mate-riale-ødelæggende aktiveringskraft med henblik på bryde seglet på mediereservoiret 27 end det ville være nødvendigt i tilfældet af en simpel nål. Dette medvirkes ved friktions-kraften mellem styreflangen 47 og holdeclipsen, som efter at have overvundet den statiske friktion passerer over i den glidende tilstand og derfor frigør en større del af den forvente-10 de aktiveringskraft til aktivering og overvindelse af andre modstande.Thus, a pill detecting closure has been provided which requires one higher, material-destroying actuating force to break the seal on the media reservoir 27 than would be necessary in the case of a simple needle. This is aided by the frictional force between the guide flange 47 and the retaining clip, which, after overcoming the static friction, passes into the sliding state and therefore releases a greater portion of the expected activating force for activating and overcoming other resistors.

Fi g. 6 og 7 viser en foretrukket udførelsesform, som har samme strukturelle og funktionelle træk som udførelsesformen i fig. 5. Her er også de samme henvisningstal anvendt til samme dele og der henvises til den tidligere beskrivelse af disse dele og deres funktion.Figures 6 and 7 show a preferred embodiment having the same structural and functional features as the embodiment of FIG. 5. Here also the same reference numerals are used for the same parts and reference is made to the previous description of these parts and their function.

Elementet 60, som er forbundet til aktiveringsmuffen 17 med materialebroeme 19, er en 15 ring med et L-formet tværsnit. Derfor har den en bundring 70, som ved sin inderside har materialebroeme 19, som forbinder bundringen 70 sammenhængende med aktiveringsmuffen 17. Parallelt og koncentrisk med aktiveringsmuffen 17 er en kappe 71. Ved kappens 71 indvendige overflade er der tilvejebragt en snapprofil 72, som f.eks. kan bestå af et ringfremspring med modhager (se detailbilledet i større målestok i den stregpunkterede 20 cirkel i fig. 7).The element 60, which is connected to the activation sleeve 17 with the material bridges 19, is a ring 15 with an L-shaped cross section. Therefore, it has a bottom ring 70 which has on its inside material bridges 19 which connect the bottom ring 70 contiguously with the activation sleeve 17. Parallel and concentric with the activation sleeve 17 is a sheath 71. At the inner surface of the sheath 71 there is provided a snap profile 72, which f. eg. may consist of a ring protrusion with barbs (see larger scale detail image in the dashed circle in Fig. 7).

Elementet 60 dækker et husfremspring 61, som er ringformet og omgiver midterhusåbningen 74, i hvilken pumpecylinderen 27 og dens aktiveringsmuffe 17 er indeholdt. Fremspringet 61 rager ud fra huset 13 nedad. Fremspringet 61 kan have en ring- eller rørformet form eller være i form af flere segmenter, som er anbragt på ring-formet måde. Ved ydersi-25 den har den en modprofil 73, som passer til kappens snapprofil 72.The element 60 covers a housing projection 61 which is annular and surrounds the central housing opening 74 in which the pump cylinder 27 and its actuating sleeve 17 are contained. The projection 61 protrudes from the housing 13 downwards. The projection 61 may have an annular or tubular shape or be in the form of multiple segments arranged in an annular manner. At the outside, it has a counter profile 73 which fits the sheath profile 72.

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Dens snapvirkning er tilvejebragt således, at elementet 60 under montering af enheden af aktiveringsmuffe/pumpecylinderen 17,27 i husåbningen 74 fastgøres ved snapvirkning til husfremspringet 61 og dækker sidstnævnte. Kraften, som er nødvendig til at fastsnappe er således, at matenalebroeme under fastsnapning ikke vil blive overspændt Hvis imidler-5 tid en kraft i modretningen udøves, som kunne føre til medtrækning af aktiveringsmuffen 17 nedad, vil modhageformen på snapmidleme 72,73 sørge for, at materialebroeme 19 vil blive ødelagt og derved tydelig afsløre, at der har været pillet.Its snap action is provided so that, during mounting of the unit by the actuating sleeve / pump cylinder 17,27 in the housing opening 74, the element 60 is secured by snap action to the housing projection 61 and covers the latter. The force needed to snap is such that the maternal bridges will not be over-tensioned during snap-in. However, if a force is applied in the counterclockwise direction which could lead to the downward sealing of the actuating sleeve 17, the oblique shape of the snap means 72.73 will provide that the material bridges 19 will be destroyed, thereby clearly revealing that the pellets have been peeled.

Selvom huset i udførelsesformen i fig. 5 har en huskappe 15, som rager ned under den, tilvej ebringer udførelsesformen i fig. 6 og 7 aktiveringsskuldre 14 med formen af flade hus-10 fremspring (fig. 7), som rager til siden langt forbi hoveddelen 34 af huset i to modstående retninger. Den har en generelt oval form. Den muliggør et sikkert greb af apparatet mellem to fingre, når tommelfingeren trykker på den nederste bund 25 af aktiveringsmuffen.Although the housing of the embodiment of FIG. 5 has a housing sheath 15 which projects below it, providing the embodiment of FIG. 6 and 7 actuating shoulders 14 with the shape of flat housing protrusions (Fig. 7) which project laterally far beyond the body portion 34 of the housing in two opposite directions. It has a generally oval shape. It allows a secure grip of the device between two fingers when the thumb presses on the bottom bottom 25 of the actuating sleeve.

Ribber 65, som ses af fig. 7 i formen, tilvejebringer et godt greb og afstivning, især med en rundtgående kantribbe 77, som rager opad.Ribs 65 as seen in FIG. 7 in the mold, provides good grip and stiffening, especially with a circumferential edge rib 77 projecting upwards.

15 Derved spares materiale uden at påvirke stabiliteten, som er af største betydning for et en-gangsprodukt. Desuden kan den nedre overflade af aktiveringsskulderen 14 anvendes til at fastgøre markeringer, f.eks. portionstal. Aktiveringsmuffen 17 kan også anvendes til mærkesedler eller andre synlige mærker.15 In this way, material is saved without affecting the stability, which is of the greatest importance for a single-use product. In addition, the lower surface of the activation shoulder 14 can be used to attach markings, e.g. portionstal. The activation sleeve 17 can also be used for marking notes or other visible marks.

Ved den ydre periferi af aktiveringsmuffen 17 er der tilvejebragt et andet ringformet ele-20 ment 76 ved afstanden a fra elementets 70 nedre overflade 63. Ligesom elementet 70 er det andet element 76 også støbt i ét stykke med aktiveringsmuffen via materialebroer 19b, som kan være af arten som vist i fig. 2 til 4. De kan imidlertid være noget stærkere end dem på elementet 60.At the outer periphery of the actuating sleeve 17, another annular element 76 is provided at the distance a from the lower surface 63 of the member 70. Like the member 70, the second member 76 is also integrally molded with the actuating sleeve via material bridges 19b, which may be of the species as shown in FIG. 2 to 4. However, they may be somewhat stronger than those on element 60.

Denne udførelsesform tilvejebringer en dobbeltslagsafgivelsesanordning, dvs. en afgivel-25 ses eller sprayanordning, som er i stand til at afgive to nøjagtigt proportionerede portioner efter hinanden. Det ringformede element 76 slutter operationen efter den første del af DK 174347 B1 11 slaget, som er ækvivalent med afstanden a. Ved denne ende af denne del af slaget adderes operationskraften (modtryk fra væsken osv.) og kraften til brydning af materialebroeme 19. Det er derfor usandsynligt, at brugeren utilsigtet overvinder den anden ring.This embodiment provides a double-stroke dispensing device, i.e. a dispenser or spray device capable of delivering two accurately proportioned portions in succession. The annular element 76 terminates the operation after the first part of the stroke, which is equivalent to the distance a. At this end of this part of the stroke, the operating force (counterpressure from the liquid, etc.) and the force for breaking the material bridges 19 are added. is therefore unlikely that the user inadvertently overcomes the second ring.

Efter dette stop, som sædvanligvis er halvdelen af vejen af den samlede slaglængde, kan 5 brugeren også bryde materialebroeme 19b ved et forøget tryk på pumpedelen. Når materialebroeme 19b biydes, kommer det ringformede element 76 til anlæg ved elementets 60 kontaktoverflade 63.After this stop, which is usually half the way of the total stroke, the user can also break the material bridges 19b at an increased pressure on the pump part. When the material bridges 19b are supported, the annular member 76 comes into contact with the contact surface 63 of the member 60.

Efter den første del af udslaget af dette to-udslagsafgivelsesapparat er beholderen eller pumpecylinderen 26 åben via den hule nål 36. Til anvendelsen af en næsesprøjte er denne 10 udførelsesform imidlertid meget fordelagtig til at tilføre et medikament i begge næsebor efter hinanden, men med samme forhold. Det andet udslag er derved også pillesikret.However, after the first portion of the stroke of this two stroke dispenser, the container or pump cylinder 26 is open via the hollow needle 36. However, for the use of a nasal syringe, this embodiment is very advantageous for administering a medicament in both nostrils one after the other but with the same ratio. . The second result is thereby also pill-proof.

Det skal bemærkes, at udførelsesformen i fig. 6 tilvejebringer et lukket og ukompliceret afgivelsesapparat, som er let at betjene og pakke.It should be noted that the embodiment of FIG. 6 provides a closed and uncomplicated dispensing apparatus which is easy to operate and pack.

jj

Claims

A dispensing apparatus for a flowable medium comprising a base body (13) which receives at least partially a pump unit having: a pump chamber which can be connected to a delivery opening (36) via a delivery channel (40), which pump chamber is limited by a pump cylinder (27) and a pump piston (31); wherein the pump cylinder (27) forms the media reservoir; the pump piston (31) is slidably guided in the pump cylinder (27); the pump cylinder (27) is at least partially contained in an actuating sleeve (17) characterized by a pill-detecting closure which can be destroyed by an actuating force, including at least one breakable material bridge (19) between the pump unit and the annular fastener ( 60), which fastening element (60) is connected to the pump unit via at least one material bridge (19); said fastener being secured to said base body (13) by enclosing an outer projection (61) of said base body (13), 15 cooperating snap means (72, 73) being provided at the outside of said projection (61) and on the inside of said fastening member (60) .

Dispensing apparatus according to claim 1, wherein the fastening element (60) is an L-shaped cross-sectional ring consisting of a bottom ring portion (70) and a substantially cylindrical sheath portion (71).

Dispensing apparatus according to claim 2, further comprising at the inside of the sheath portion (71) a snap profile (72) which cooperates with a corresponding shaped snap profile (73) at the outside of the projection (61). 13 DK 174347 B1

Dispensing apparatus according to any of claims 1-3, wherein the snap means (72, 73) are barrel-like to provide a less holding force in the snap-in direction than in a direction opposite thereto, in which opposite the holding force is greater than a force for breaking at least one material bridge (19).

A dispensing apparatus according to any one of claims 1-4, wherein a guide for the pump part is formed by inner webs (62) of the base part (13).

Dispensing apparatus according to any one of claims 1-5, wherein the fastening element (60) has a connecting side to a joint tool which exerts a force to connect the snap means (72,73).

Dispensing apparatus according to any one of claims 1 to 6, wherein the at least one material bridge (19) is formed in conjunction with an activation sleeve (17).

A dispensing apparatus according to any one of claims 1 to 7, further comprising several material bridges which are substantially in one plane.

Dispensing apparatus according to any one of claims 1 to 8, wherein the at least one material bridge (19) is made in the form of a tip connected to a wall.

Dispensing apparatus according to any one of claims 1 to 9, wherein a marking on the pump unit is provided which cooperates with a marking on the base body (13) and which is displaced mutually during pump operation.

A dispensing apparatus according to any one of claims 1 to 10, wherein between a pill detecting closure position in which the movable parts for actuation are retained closed and a dispensing starting position determined at the start of the media dispensing is a distance which defines an idle path. DK 174347 B1 14

A liquid medium dispensing apparatus comprising a base body (13) which receives at least in part a pump unit having: a pump chamber which can be connected to a delivery opening (36) via a delivery channel (40), which pump chamber is limited by a pump cylinder (27) and a pump piston 5 (31), the pump cylinder (37) forming the media reservoir; the pump piston (31) is slidably guided in the pump cylinder (27); characterized by a first and second pill-detecting closure which can be destroyed by an actuating force including a first and a second element (60, 76), each having at least one breakable material bridge (19, 10 19b); said first and second members having such a distance that after breaking their material bridges (19) the first member (60) allows a first partial impact of the pump piston (31), said first partial impact being limited by the second member (76); and whereby the pump piston (31), after breaking of the material bridges (19b) on the second element (76) under an increased activating force, is free to another partial impact.

The dispensing apparatus of claim 12, wherein the first member (60) has a abutment surface, the second member (76) striking at the end of the first partial strike.

A dispensing apparatus for a flowable medium comprising a base body (13) which at least partially receives a pump unit having: a pump chamber connectable to a delivery opening (36) via a discharge channel 20 (40), which pump chamber is limited by a pump cylinder ( 27) and a pump piston (31); the pump cylinder (27) forms a medium reservoir and is at least partially contained in a plastic actuation sleeve (17);

The pump piston (31) is slidably guided in the pump cylinder (27); the base body (13) has a central, substantially cylindrical portion (34) having at its upper end a spray nozzle (36) and at its lower end activation and gripping shoulders (14) in the form of generally flat radial projections of substantially larger dimensions. in two mutually opposite directions than in a direction perpendicular thereto; characterized by a pill-revealing closure which can be destroyed by an activating force; including at least one breakable material bridge (19) connected to a fastener (60) and the actuating sleeve (17), which fastener (60) is a ring which encloses an outer housing protrusion (61) protruding from the underside of the gripper shoulders (14) and said actuating sleeve (17) which projects centrally through and well beyond said fastener (60).