HRP930507A2

HRP930507A2 - A dosage unit for dosing a number of measured tities of a liquid, such as an insulin preparation, from a ridge

Info

Publication number: HRP930507A2
Application number: HR930507A
Authority: HR
Inventors: Niels Erik Holm; Allan Spork; Klaus Thogersen; Anders Bressendorff
Original assignee: Niels Erik Holm; Allan Spork; Klaus Thogersen; Anders Bressendorff
Priority date: 1988-02-10
Filing date: 1993-03-24
Publication date: 1995-04-30
Also published as: HRP930507B1; SI8910315A

Description

Izum se odnosi na jedan dozator za doziranje više mjerenih količina neke tekućine, a koji obuhvaća jedno cilindrično kućište za dozu predmetne tekućine, pri čemu je poželjno da je ta tekućina u posebnoj kapsuli, a dalji kraj tog kućišta je izveden sa elementima za pričvršćivanje jedne igle za ispuštanje tekućine, pri čemu taj dozator ima jednu klipnu polugu koja djeluje na jedan klip koji istiskuje tekućinu, a nalazi se u kapsuli, kao i jedan element za podešavanje okretno postavljen na kućištu, koji u cilju podešavanja određuje dužinu radnog hoda klipne poluge u odnosu na jednu mjernu skalu koja prikazuje željenu doziranu količinu, pri čemu dozator dalje obuhvaća jednu zapornu napravu postavljenu između kućišta i klipne poluge i omogućuje pomicanje te klipne poluge prema daljnjem kraju kućišta, a sprječava njeno pomicanje u suprotnom smjeru. The invention relates to one dispenser for dosing several measured amounts of a liquid, which includes one cylindrical housing for the dose of the liquid in question, where it is preferable that this liquid is in a special capsule, and the far end of this housing is made with elements for attaching a needle for releasing liquid, whereby this dispenser has one piston lever that acts on one piston that pushes out the liquid, and is located in the capsule, as well as one adjustment element rotatably mounted on the housing, which, for the purpose of adjustment, determines the length of the working stroke of the piston lever in relation to to a measuring scale that shows the desired dosed amount, wherein the dispenser further comprises a locking device placed between the housing and the piston rod and enables the movement of the piston rod towards the further end of the housing, while preventing its movement in the opposite direction.

Poznate su razne vrste dozatora za doziranje odgovarajućih količina insulina, pri čemu ti dozatori koriste kapsule koje sadrže razne koncentracije insulina. Obično takva kapsula sadrži 1.5 ml (neke kapsule sadrže 3 ml), a koncentracija insulina je, na primjer, 100 jedinica insulina po 1 ml, tako da ampula sadrži 150 jedinica insulina. Kada se koristi dozator, onda treba da se kod svake injekcije ispusti jedna unaprijed određena količina, preporučljivo do 40 jedinica insulina po injekciji. Zbog toga se dozator može koristiti za davanje nekoliko injekcija za svaku kapsulu. Ovakva procedura zahtijeva veoma precizno podešavanje doze koja će se svaki put ubrizgati. Various types of dispensers are known for dispensing appropriate amounts of insulin, whereby these dispensers use capsules containing various concentrations of insulin. Usually such a capsule contains 1.5 ml (some capsules contain 3 ml), and the concentration of insulin is, for example, 100 units of insulin per 1 ml, so the ampoule contains 150 units of insulin. When a dispenser is used, a predetermined amount should be released with each injection, preferably up to 40 units of insulin per injection. Therefore, the dispenser can be used to give several injections for each capsule. This procedure requires a very precise adjustment of the dose that will be injected each time.

Poznati dozatori su relativno komplicirani, a često tako oblikovani, da im se dužina u uzdužnom pravcu smanjuje kako se koja doza ubrizga. Takvi dozatori imaju dosta nedostataka, dijelom u vezi sa skladištenjem, a dijelom zato što se njihov izgled postepeno pogoršava. Pored toga, sve se teže koriste kako im se smanjuje dužina. Known dispensers are relatively complicated, and often shaped in such a way that their length in the longitudinal direction decreases as the dose is injected. Such dispensers have many disadvantages, partly related to storage, and partly because their appearance gradually deteriorates. In addition, they become more and more difficult to use as their length decreases.

Poznati su dozatori čija dužina ostaje nepromijenjena. Takvi dozatori zahtjevaju međutim, stupnjevito ubrizgavanje dozirane količine. Takav mehanizam je relativno kompliciran, što je razlog da je proizvodnja dozatora relativno skupa. There are well-known dispensers whose length remains unchanged. Such dispensers, however, require stepwise injection of the dosed amount. Such a mechanism is relatively complicated, which is the reason why the production of dispensers is relatively expensive.

Cilj je prikazanog izuma da se ostvari dozator koji pri upotrebi zadržava konstantnu dužinu i omogućuje prethodno podešavanje ukupne količine koja treba da se dozira, a koji će istovremeno biti jeftin za proizvodnju. The aim of the presented invention is to create a dispenser that maintains a constant length during use and enables the total amount to be dosed to be pre-adjusted, and which will be cheap to produce at the same time.

Dozator prema izumu karakterističan je po tome da je naprava za podešavanje nepomično postavljena na kućište i da je klipna poluga izvedena sa vanjskim navojem, pri čemu je spriječeno njezino okretanje. Jedna navrtka je postavljena između klipne poluge i naprave za podešavanje, tako da je navrnuta na klipnu polugu dok sa vanjske strane aksijalno pomicana zahvata napravu za podešavanje, tako da okretanje naprave za podešavanje povlači i okretanje navrtke u odnosu na klipnu polugu. Pri tome je ta navrtka povezana sa jednim pokazivačem koji se pruža iz kraja spomenute naprave za podešavanje, i koji ima element za zaustavljanje njegovog aksijalnog kretanja prema daljnjem kraju dozatora, a također ima jednu mjernu skalu koja prikazuje njegovo aksijalno pomicanje u odnosu na napravu za podešavanje, a time i željenu doziranu količinu. The dispenser according to the invention is characterized by the fact that the adjustment device is immovably placed on the housing and that the piston lever is made with an external thread, whereby its rotation is prevented. One nut is placed between the piston rod and the adjusting device, so that it is screwed onto the piston rod while on the outside axially moved engages the adjusting device, so that the rotation of the adjusting device also pulls the rotation of the nut in relation to the piston rod. In doing so, this nut is connected to an indicator which extends from the end of said adjusting device, and which has an element for stopping its axial movement towards the further end of the dispenser, and also has a measuring scale which shows its axial movement in relation to the adjusting device , and thus the desired dosed amount.

Dobijeni dozator se lako unaprijed podešava na željenu doziranu količinu, jer se okretanjem naprave za podešavanje okreće i navrtka, a time se ista aksijalno pomiće zajedno sa za nju pričvršćenim pokazivačem u odnosu na napravu za podešavanje i na klipnu polugu. Željena količina doziranja se očituje pomoću jedne pogodne mjerne skale koja pokazuje pomicanje pokazivača u odnosu na napravu za podešavanje. Poslije prethodnog podešavanja, ubrizgavanje se vrši jednostavnim pritiskivanjem na pokazivač, tako da se pokazivač aksijalno pomiče u odnosu na napravu za podešavanje natrag u njegov polazni položaj u odnosu na istu. Kako navrtka zahvata klipnu polugu, a klipna poluga je spriječena da se okreće u odnosu na kućište, pomicanje pokazivača izaziva pomicanje klipne poluge kao i klipa kapsule. Zaporna naprava između kućišta i klipne poluge osigurava da klip ne bude izvučen iz kapsule u toku podešavanja. Prema izumu je posebno pogodno, ako navrtka sadrži najmanje jedan radijalan ispust koji se aksijalno pruža sa njene vanjske strane i koji je klizno postavljen u pripadajući aksijalni žlijeb na unutrašnjoj strani naprave za podešavanje. The resulting dispenser is easily pre-adjusted to the desired dosed quantity, because turning the adjusting device also turns the nut, and thus it moves axially together with the pointer attached to it in relation to the adjusting device and the piston lever. The desired dosage amount is indicated by means of a suitable measuring scale which shows the movement of the pointer in relation to the adjustment device. After the previous adjustment, the injection is performed by simply pressing the pointer, so that the pointer moves axially relative to the adjustment device back to its starting position relative to the same. As the nut engages the piston rod and the piston rod is prevented from rotating relative to the housing, movement of the pointer causes movement of the piston rod as well as the capsule piston. A locking device between the housing and the piston rod ensures that the piston is not pulled out of the capsule during adjustment. According to the invention, it is particularly convenient if the nut contains at least one radial outlet that extends axially from its outer side and is slidably placed in the associated axial groove on the inner side of the adjustment device.

Prema izumu, navrtka i sa njom povezan pokazivač mogu da imaju element koji spriječava njihovo aksijalno kretanje dalje od daljnjeg kraja dozatora, čime se spriječava podešavanje dozatora na eventualno opasno velike dozirane količine. Pored toga se, prema izumu, navrtka i pokazivač mogu integralno izvesti, čime se dobija posebno jednostavno izvođenje izuma. According to the invention, the nut and the indicator connected to it can have an element that prevents their axial movement away from the further end of the dispenser, thereby preventing the adjustment of the dispenser to possibly dangerously large dosage amounts. In addition, according to the invention, the nut and pointer can be made integrally, which results in a particularly simple implementation of the invention.

Prema izumu, navrtka i pokazivač mogu biti izvedeni aksijalno simetrično, sa jednim gumbom na vanjskom kraju, pri čemu vanjski promjer tog gumba odgovara vanjskom promjeru naprave za podešavanje. Kao rezultat toga, aksijalno kretanje pokazivača, a time i klipne poluge i klipa, prema daljnjem kraju dozatora zaustavlja se na jednostavan način. Dozator koji ima odvojiv poklopac za zaštitu igle, može, prema izumu, da bude tako izveden sa poklopcem takve dužine, da kada se postavi dodiruje daljnji kraj naprave za podešavanje, pri čemu priljubljeni krajevi poklopca i naprave za podešavanje imaju međusobno prilagođene dijelove mjernih skala, koji pokazuju podešenu doziranu količinu u toku obrtanja naprave za podešavanje u odnosu na poklopac. According to the invention, the nut and pointer can be made axially symmetrical, with one button at the outer end, whereby the outer diameter of this button corresponds to the outer diameter of the adjusting device. As a result, the axial movement of the pointer, and thus of the piston rod and piston, towards the further end of the dispenser is stopped in a simple way. The dispenser, which has a detachable cover to protect the needle, can, according to the invention, be made with a cover of such a length that when it is placed it touches the further end of the adjusting device, whereby the clamped ends of the cover and the adjusting device have mutually adapted parts of the measuring scales, which show the adjusted dosed quantity during the rotation of the adjustment device in relation to the lid.

Na taj način se omogućuje pažljivo podešavanje željene količine na jednostavan način, jer dijelovi mjernih skala pokazuju odgovarajuću količinu dijelovima jednog punog okreta naprave za podešavanje, dok mjerna skala povezana sa pokazivačem pokazuje dozirane količine za svaki pun okret naprave za podešavanje. In this way, it is possible to carefully adjust the desired amount in a simple way, because the parts of the measuring scales show the corresponding amount in parts of one full turn of the adjusting device, while the measuring scale connected to the indicator shows the dosed amounts for each full turn of the adjusting device.

Prema jednom posebno pogodnom izvođenju izuma, na kućištu i napravi za podešavanje može se postaviti naprava za označavanje, koja omogućuje stupnjevito okretanje naprave za podešavanje sa dodirljivim i, po želji, zvučnim prikazivanjem ovog pomicanja, pri čemu poklopac može, po želji, da bude neokretno postavljen, a da njegov dio mjerne skale bude postavljen nasuprot dijela mjerne skale naprave za podešavanje, i to u bilo kojem njegovom dijelu uslijed njegovog stupnjevitog obrtanja. Na taj način se uvijek može postaviti dio mjerne skale poklopca nasuprot jedne nepokretne nule na napravi za podešavanje, pri čemu ta nula predstavlja osnovu za podešavanje željene dozirane količine. Daljnja prednost je to, što korisnik dozatora ima jasan osjećaj promjena podešavanja, pri čemu je sigurnost u pogledu pravilnog podešavanja izuzetno dobra. According to a particularly suitable embodiment of the invention, a marking device can be placed on the housing and the adjusting device, which allows the gradual rotation of the adjusting device with a tactile and, if desired, audible presentation of this movement, whereby the cover can, if desired, be non-rotating placed, and that its part of the measuring scale be placed opposite the part of the measuring scale of the adjustment device, and that in any of its parts due to its gradual rotation. In this way, part of the measuring scale of the cover can always be placed opposite a stationary zero on the adjustment device, whereby this zero represents the basis for adjusting the desired dosed amount. A further advantage is that the user of the dispenser has a clear sense of the adjustment changes, whereby the certainty regarding the correct adjustment is extremely good.

Najzad, prema izumu se može spriječiti okretanje klipne poluge u odnosu na kućište pomoću zaporne naprave, pošto je jedna zaporka izvedena na kućištu, tako da zahvata jedan uzdužan žlijeb u klipnoj poluzi, pri čemu su na dnu tog žlijeba izvedeni zupci koji sudjeluju sa zaporkom. Finally, according to the invention, it is possible to prevent the piston rod from turning in relation to the housing by means of a locking device, since one lock is provided on the housing, so that it engages a longitudinal groove in the piston lever, and at the bottom of this groove there are teeth that engage with the lock.

Izum je u daljnjem tekstu detaljno opisan sa pozivom na priložene crteže, gdje: The invention is described in detail below with reference to the attached drawings, where:

- slika 1 prikazuje izgled jednog preporučljivog izvođenja dozatora prema izumu, pri čemu je taj dozator spreman za ubrizgavanje jedne unaprijed određene količine tekućine; - figure 1 shows the appearance of one recommended embodiment of the dispenser according to the invention, wherein this dispenser is ready to inject a predetermined amount of liquid;

- slika 2 prikazuje uzdužni presjek dozatora prije podešavanja unaprijed određene dozirane količine; - Figure 2 shows a longitudinal section of the dispenser before adjusting the predetermined dosed amount;

- slika 3 prikazuje uzdužni presjek dozatora sa slike 1; - Figure 3 shows a longitudinal section of the dispenser from Figure 1;

- slika 4 prikazuje presjek dužinom linije IV-IV sa slike 3; - figure 4 shows a section along the line IV-IV from figure 3;

- slika 5 prikazuje presjek dužinom linije V-V sa slike 3; - Figure 5 shows a section along the V-V line from Figure 3;

- slika 6 prikazuje izgled jednog izvođenja pokazivača, izvedenog integralno sa pripadajućom navrtkom, pri čemu su pojedini dijelovi izostavljeni radi jasnoće, - figure 6 shows the appearance of one version of the pointer, made integral with the associated nut, where individual parts are omitted for clarity,

- slika 7 prikazuje uzdužni presjek izvođenja sa slike 6. - Figure 7 shows a longitudinal section of the embodiment from Figure 6.

Dozator prema izumu, prikazan na slikama 1 do 5, obuhvaća kućište 1 za kapsulu 2 koja sadrži tekućinu 3. Kapsula 2 sadrži klip 4 koji potiskuje tekućinu 3 kroz iglu 5 umetnutu u suprotni kraj, pri čemu je ta igla pričvršćena na kućište 1 na opće poznati način navrtanjem na cilindričan poklopac 6. Kao što je prikazano na slikama 2 i 3, kapsula 2 se može učvrstiti u kućištu pomoću poklopca 7 za pričvršćivanje, po želji pričvršćenog na kućište u vidu uskočnika. Poklopac 7 omogućuje umetanje jednog istaknutog kraja (nije prikazan) igle 5, a koji se može pružati u unutrašnjost kapsule. Ovo postavljanje i umetanje igle 5 vrši se, preporučljivo, kod navrtanja poklopca 6 sa iglom na poklopac 7 za pričvršćivanje kućišta 1. The dispenser according to the invention, shown in figures 1 to 5, includes a housing 1 for a capsule 2 containing a liquid 3. The capsule 2 contains a piston 4 that pushes the liquid 3 through a needle 5 inserted in the opposite end, this needle being attached to the housing 1 in general the known way by screwing on the cylindrical cover 6. As shown in figures 2 and 3, the capsule 2 can be fixed in the housing by means of a fastening cover 7, optionally attached to the housing in the form of a snap. The cover 7 enables the insertion of one protruding end (not shown) of the needle 5, which can extend into the interior of the capsule. This placement and insertion of the needle 5 is done, preferably, when screwing the cover 6 with the needle onto the cover 7 for fixing the housing 1.

Na kraju suprotnom od igle 5, dozator ima klipnu polugu 8 koja potiskuje klip 4 u kapsuli 1. Klipna poluga 8 ima uzdužni žlijeb 9 koji na dnu ima poprečne zupce 10 koji se uočavaju u uzdužnom presjeku istog. Ovi zupci sudjeluju sa zaporkom 11 izvedenom na kućištu 1, koja ima zupce koji sudjeluju sa zupcima 10 na klipnoj poluzi 8. Zupci 10 i zaporka 11 izvedeni su tako da omogućuju pomicanje klipne poluge 8 prema klipu 4 kapsule, a da spriječe pomicanje u suprotnom smjeru. Kao što je prikazano na slici 5, zaporka 11 i žlijeb 9 su takve širine, da njihovo zajedničko djelovanje spriječava okretanje klipa u odnosu na kućište. At the opposite end of the needle 5, the dispenser has a piston lever 8 that pushes the piston 4 in the capsule 1. The piston lever 8 has a longitudinal groove 9, which has transverse teeth 10 at the bottom, which can be seen in its longitudinal section. These teeth engage with the latch 11 provided on the housing 1, which has teeth engaging with the teeth 10 on the piston rod 8. The teeth 10 and the latch 11 are designed to allow the piston rod 8 to move towards the capsule piston 4, while preventing movement in the opposite direction . As shown in figure 5, the lock 11 and the groove 9 are of such width that their joint action prevents the rotation of the piston relative to the housing.

Klipna poluga 8 ima po svojoj vanjskoj površini navoj 12, pri čemu je navrtka 13 navrnuta na taj navoj. Na vanjskoj površini navrtka 13, ima radijalne ispuste 14 i 15, koji se pružaju aksijalno dužinom navrtke 13 i zahvaćaju u odgovarajuće žljebove 16, 17 (slika 4) u čahurastoj napravi 18 za podešavanje koja obuhvaća navrtku. Kod kraja uz kućište 1, naprava za podešavanje obuhvaća kružno žlijeb 19 u koji ulazi kružni ispust 20 na kućištu 1. Na taj način može da se okreće naprava za podešavanje uz istovremeno spriječavanje njezinog aksijalnog pomicanja. The piston rod 8 has a thread 12 on its outer surface, and the nut 13 is screwed onto that thread. On the outer surface of the nut 13, there are radial projections 14 and 15, which extend axially along the length of the nut 13 and engage in corresponding grooves 16, 17 (Fig. 4) in the bushing device 18 for adjustment which includes the nut. At the end next to the housing 1, the adjusting device includes a circular groove 19 into which the circular outlet 20 on the housing 1 enters. In this way, the adjusting device can be rotated while simultaneously preventing its axial movement.

Navrtka 13 izvedena je integralno sa cjevastim pokazivačem 21 koji se pruža koaksijalno sa klipnom polugom 8 izvan kućišta 1, a između klipne poluge 8 i naprave 18 za podešavanje. Na slobodnom kraju koji se pruža izvan naprave za podešavanje, pokazivač 21 ima završni gumb 22 praktičnog istog vanjskog promjera, kao i naprava 18 za podešavanje. Kako je prikazano na slikama 2 i 3, navrtka obuhvaća jedan kružni oslonac površinu 23 na mjestu dodira sa cjevastim pokazivačem. Shodno tome, naprava 18 za podešavanje ima unutrašnji kružni oslonac površine 24, pri čemu oslonac površine 23 na navrtki naliježe na spomenuti oslonac površine 24 u toku pomicanja navrtke u aksijalnom pravcu u odnosu na klip, pri čemu se to kretanje zaustavlja na željenom mjestu. Žljebovi 16 i 17 izvedeni na unutrašnjoj strani naprave 18 za podešavanje, toliki su da se navrtka 13 može slobodno pomicati u aksijalnom pravcu u odnosu na klip i napravu za podešavanje, a između susjednog kraja kućišta 1 i unutrašnji oslonac površine 24 na napravi 18 za podešavanje. The nut 13 is made integral with the tubular pointer 21 which extends coaxially with the piston lever 8 outside the housing 1, and between the piston lever 8 and the device 18 for adjustment. At the free end extending outside the adjustment device, the pointer 21 has a terminal knob 22 of substantially the same outside diameter as the adjustment device 18. As shown in Figures 2 and 3, the nut includes a circular support surface 23 at the point of contact with the tubular pointer. Accordingly, the adjustment device 18 has an internal circular surface support 24, whereby the surface support 23 on the nut rests on said surface support 24 during the movement of the nut in the axial direction relative to the piston, whereby this movement stops at the desired place. The grooves 16 and 17 made on the inside of the adjustment device 18 are such that the nut 13 can move freely in the axial direction in relation to the piston and the adjustment device, and between the adjacent end of the housing 1 and the inner support surface 24 on the adjustment device 18 .

Dozator dalje obuhvaća odvojiv poklopac 25 koji štiti iglu 5 kada se dozator ne koristi. Dužina tog poklopca je tolika, da kada je postavljen njegov slobodni kraj 26, je postavljen uz napravu 18 za podešavanje. Aksijalna udubljenja ili žljebovi izvedeni su blizu slobodnog kraja 26 poklopca 25, a na istom međusobnom ugaonom rastojanju po unutrašnjoj strani poklopca. Na slikama 2 i 3 ta su udubljenja označena pozivnim brojevima 27 i 28, i prihvaćaju odgovarajuće oblikovane ispuste 29 i 30 na vanjskoj strani kućišta. Na ovaj način poklopac može uvijek da bude postavljen u unaprijed određen kutni položaj u odnosu na vanjsku površinu kućišta 1. Ispusti 29 i 30 na kućištu 1 mogu da se postave na način koji neće biti detaljnije opisan u udubljenja 27 i 28 na poklopcu 25 uskočnim djelovanjem. The dispenser further comprises a detachable cover 25 which protects the needle 5 when the dispenser is not in use. The length of this cover is such that when its free end 26 is placed, it is placed next to the device 18 for adjustment. Axial recesses or grooves are made near the free end 26 of the cover 25, and at the same mutual angular distance on the inner side of the cover. In Figures 2 and 3 these recesses are designated by reference numerals 27 and 28, and accept correspondingly shaped outlets 29 and 30 on the exterior of the housing. In this way, the cover can always be placed in a predetermined angular position in relation to the outer surface of the housing 1. The outlets 29 and 30 on the housing 1 can be positioned in a way that will not be described in more detail in the recesses 27 and 28 on the cover 25 by a snap action. .

Kao što je prikazano na slici 5, kućište 21 izvedeno je sa aksijalnim žljebovima 31, 32, 33, 34 i 37 dužinom njegove vanjske površine. Ovi žljebovi postavljeni su na istom međusobnom kutnom razmaku kao i žljebovi ili udubljenja 27 i 28 na unutrašnjoj strani poklopca. Žljebovi 31 do 35 na vanjskoj strani kućišta sudjeluju kućišta sa jednim ispustom 36 na napravi 18 za podešavanje koji se pruža na unutra. Žljebovi 31 do 35 i ispust 36 su tako dimenzionirani da se okretanje naprave 18 za podešavanje u odnosu na kućište 1 može lako izvesti ručno, jer postavljanje ispusta 36 u žljebove osigurava zvučno stupnjevito kretanje naprave za podešavanje u odnosu na iste i na željeno mjesto kao i držanje naprave 18 za podešavanje u odnosu na kućište 1. As shown in Figure 5, the housing 21 is provided with axial grooves 31, 32, 33, 34 and 37 along its outer surface. These grooves are placed at the same angular distance from each other as the grooves or recesses 27 and 28 on the inside of the cover. Grooves 31 to 35 on the outside of the housing engage the housing with a single outlet 36 on the adjusting device 18 extending inwardly. The grooves 31 to 35 and the outlet 36 are dimensioned in such a way that the turning of the adjustment device 18 relative to the housing 1 can be easily done by hand, because the placement of the outlet 36 in the grooves ensures a sonically stepwise movement of the adjustment device relative to the same and to the desired location as well as holding the adjustment device 18 in relation to the housing 1.

Na vanjskoj strani naprave za podešavanje postavljena je skala kod kraja uz poklopac 25 (slika 1). Ova skala obuhvaća platformu 37 na kojoj je broj 0. Poklopac 25 ima gumb 38 koji se postavlja nasuprot platforme 37. Proizvoljno postavljanje poklopca 25 po opsegu kućišta i odgovarajuće postavljanje naprave 18 za podešavanje također u odnosu na opseg kućišta 1, omogućuje korisniku da uvijek može da postavi gumb 38 nasuprot platforme 37 prije nego što počne podešavanje. A scale is placed on the outside of the adjustment device at the end next to the cover 25 (picture 1). This scale includes a platform 37 on which the number 0. The cover 25 has a button 38 which is placed opposite the platform 37. Arbitrary placement of the cover 25 on the circumference of the case and corresponding placement of the adjustment device 18 also in relation to the circumference of the case 1, allows the user to always be able to to place the button 38 opposite the platform 37 before the adjustment begins.

Dozator funkcionira na slijedeći način: Nakon postavljanja gumba 38 nasuprot platforme 37 naprave 18 za podešavanje. Željena dozirana količina se podešava okretanjem naprave 18 za podešavanje u odnosu na kućište 1 i na njemu pričvršćen poklopac 25. Uslijed toga je navrtka 13 prinuđena da prati okretanje, pri čemu nalijeganje navrtke 13 na kraj kućišta 1 spriječava okretanje naprave 18 u pogrešnom smjeru. Okretanje navrtke 13 u odnosu na klipnu polugu 8 znači da se ona potiskuje od kapsule pomoću navoja 12, dok se pokazivač pomiče aksijalno od slobodnog kraja naprave 18 za podešavanje. Kao rezultat svega ovog, na vanjskoj površini pokazivača 21 pojavljuje se gruba mjerna skala 39. Podjela ove skale može biti takva, da omogućuje očitovanje dozirane količine za svaki puni okret naprave 18 za podešavanje u odnosu na gumb 38 na poklopcu 25, dok skala 40 na kraju naprave za podešavanje uz poklopac 25 pokazuje doziranu količinu u dijelovima jednog punog okreta naprave 18 za podešavanje u odnosu na gumb 38. The dispenser works in the following way: After placing the button 38 opposite the platform 37 of the device 18 for adjustment. The desired dosed amount is adjusted by turning the adjustment device 18 in relation to the housing 1 and the cover 25 attached to it. As a result, the nut 13 is forced to follow the rotation, whereby the abutment of the nut 13 on the end of the housing 1 prevents the device 18 from turning in the wrong direction. Turning the nut 13 relative to the piston rod 8 means that it is pushed away from the capsule by the thread 12, while the pointer moves axially from the free end of the adjusting device 18. As a result of all this, a coarse measuring scale 39 appears on the outer surface of the indicator 21. The division of this scale can be such that it allows the manifestation of the dosed amount for each full turn of the device 18 for adjustment in relation to the button 38 on the cover 25, while the scale 40 on at the end of the adjusting device next to the cover 25 shows the dosed amount in parts of one full turn of the adjusting device 18 in relation to the button 38.

Kada se podesi željena dozirana količina, okretanje naprave 18 za podešavanje se zaustavlja na nekom pogodnom mjestu gdje se okretanje blokira postavljanjem unutrašnjeg ispusta 36 u jedan od žljebova 31 do 35 na vanjskoj površini kućišta. Poslije toga korisnik skida poklopac 24 i postavlja dozator na željeno mjesto ubadanjem igle 5. Zatim se pokazivač 21 potiskuje natrag u napravu 18 za podešavanje pritiskom na krajnji gumb 22 sve dok se to kretanje ne zaustavi nalijeganjem navrtke 13 na kraj kućišta 1, ili nalijeganjem krajnjeg gumba 22 na susjedni kraj naprave za podešavanje. Zaporka 11 spriječava okretanje klipne poluge 8. When the desired dosed amount is set, the rotation of the adjustment device 18 is stopped at some convenient point where the rotation is blocked by placing the inner outlet 36 in one of the grooves 31 to 35 on the outer surface of the housing. After that, the user removes the cover 24 and places the dispenser in the desired place by inserting the needle 5. Then the pointer 21 is pushed back into the device 18 for adjustment by pressing the end button 22 until this movement is stopped by pressing the nut 13 on the end of the housing 1, or by pressing the end button 22 to the adjacent end of the adjustment device. Lock 11 prevents piston lever 8 from turning.

Pomicanje pokazivača 21 izaziva pomicanje klipne poluge za odgovarajući razmak, pri čemu klip kapsule je potisnut prema izlaznom kraju tekućine 3. Time se jedna količina tekućine istiskuje iz kapsule, pri čemu ta količina odgovara količini izmjerenoj na mjernim skalama. Po završetku ubrizgavanja dozator ima istu dužinu kao i prije prethodnog podešavanja, tako da zadržava prihvatljiv, uniforman izgled. The movement of the indicator 21 causes the movement of the piston lever by the corresponding distance, whereby the piston of the capsule is pushed towards the outlet end of the liquid 3. Thus, a quantity of liquid is squeezed out of the capsule, whereby this quantity corresponds to the quantity measured on the measuring scales. At the end of the injection, the dispenser has the same length as before the previous adjustment, so it maintains an acceptable, uniform appearance.

Pogodan izbor materijala omogućuje da kućište 1 bude providno, tako da korisnik može uvijek da vidi da li je ostalo tekućine u kapsuli. Poklopac 25 istovremeno osigurava da je sadržaj kapsule zaštićen od sunčevog svjetla. Pogodno je da su pojedinačni dijelovi dozatora načinjeni od plastične mase kao što je polipropilen, i to lijevanjem ubrizgavanjem i da su relativno laki za izradu. U pogledu kompatibilnosti također je moguće da se prilagodi materijal dozatora tekućine za ubrizgavanje. A suitable choice of material allows the casing 1 to be transparent, so that the user can always see if there is any liquid left in the capsule. At the same time, the cover 25 ensures that the contents of the capsule are protected from sunlight. It is convenient that the individual parts of the dispenser are made of a plastic mass such as polypropylene, by injection molding, and that they are relatively easy to manufacture. In terms of compatibility, it is also possible to adapt the material of the injection fluid dispenser.

Na slikama 6 i 7 prikazano je drugo izvođenje pokazivača 21 i pripadajućeg zavrtnja 13. Na svojoj vanjskoj strani ovaj pokazivač ima ispust 41 koji ulazi u odgovarajući žlijeb na unutrašnjoj strani naprave 18 za podešavanje. Na kraju suprotnom ispustu 41 izrađen je kružni žlijeb 42 za pričvršćivanje jednog slobodnog krajnjeg gumba, koje nije prikazano, a oblika je kao krajnji gumb 22. Figures 6 and 7 show another version of the indicator 21 and the associated screw 13. On its outer side, this indicator has an outlet 41 that enters the corresponding groove on the inner side of the device 18 for adjustment. At the end of the opposite outlet 41, a circular groove 42 is made for attaching one free end button, which is not shown, and is shaped like the end button 22.

Izum je opisan sa pozivom na jedno preporučljivo izvođenje. Moguće je izvršiti brojne modifikacije, a da se ne odstupi od opsega izuma. Klipna poluga, na primjer, može biti različitih poprečnih presjeka u zavisnosti od oblika zaporne naprave, pri čemu se spriječava okretanje klipne poluge može osigurati pogodnim oblikovanjem otvora kroz koji klipna poluga prolazi u kućište 1. Pored toga, klipna poluga 8 mora uvijek da ima navoj 12 spregnut sa navrtkom 13. Na kraju navrtke 13 uz kućište 1 može da se izvede ozubljenje, kao i na osnom kraju kućišta 1. The invention is described with reference to one preferred embodiment. Numerous modifications can be made without departing from the scope of the invention. The piston rod, for example, can have different cross-sections depending on the shape of the locking device, whereby the rotation of the piston rod can be prevented by a convenient design of the opening through which the piston rod passes into the housing 1. In addition, the piston rod 8 must always have a thread 12 coupled with the nut 13. At the end of the nut 13 next to the housing 1, teething can be performed, as well as at the axial end of the housing 1.

Ozupčenje je u vidu spregnutih zubaca koji spriječavaju okretanje jednog u odnosu na drugi kućišta 1 i navrtke 13, koje bi moglo dovesti do jačeg naprezanja. Ovi zupčanici dozvoljavaju manje okretanje u suprotnom smjeru. The toothing is in the form of coupled teeth that prevent the housing 1 and the nut 13 from turning relative to each other, which could lead to stronger stress. These gears allow less rotation in the opposite direction.

Umjesto da se koristi posebna kapsula kao posuda za tekućinu za ubrizgavanje, također je moguće da se koristi posuda izvedena integralno sa kućištem, tako da bi se pogodnom promjenom oblika kućišta ono moglo koristiti i kao posuda za tekućinu za ubrizgavanje, a da istovremeno sudjeluje sa poklopcem, napravom za podešavanje i klipnom polugom. Instead of using a separate capsule as a container for the injection liquid, it is also possible to use a container made integral with the housing, so that by a suitable change in the shape of the housing it could also be used as a container for the injection liquid, while at the same time participating with the lid , adjusting device and piston lever.

Kao što je prikazano na slici 1, poklopac ima nekružni poprečni presjek na kraju nasuprot napravi 18 za podešavanje kada je spomenuti poklopac pričvršćen na dozator. Na taj se način lako rukuje poklopcem u toku procesa sklapanja. Pored toga, postavljena je i stezaljka 43 koja pričvršćuje dozator za džep, slično nalivperu. As shown in Figure 1, the cap has a non-circular cross-section at the end opposite the adjustment device 18 when said cap is attached to the dispenser. In this way, the cover is easily handled during the assembly process. In addition, there is a clamp 43 that fastens the dispenser to the pocket, similar to a fountain pen.

Dozator se može koristiti i za druge preparate za ubrizgavanje osim insulina, kao što je, na primjer, morfij. The dispenser can also be used for other injectable preparations besides insulin, such as, for example, morphine.

Claims

1. A dispenser for dispensing multiple measured amounts of a liquid, where the dispenser includes a cylindrical housing for the dose of the liquid in question, where it is preferable that this liquid be in a separate capsule, while the further end of the housing is made with an element for attaching a needle for releasing the liquid, and the dispenser further includes one piston lever that acts on one piston that pushes out the liquid and is placed in the capsule, as well as an adjustment device rotatably mounted on the housing, which determines through adjustment the length of the stroke of the piston lever in relation to a measuring scale that shows the desired dosed amount , where the dispenser additionally contains a locking device placed between the housing and the piston lever, which allows the piston lever to move towards the further end of the housing while preventing its movement in the opposite direction, characterized by the fact that the adjustment device (18) is immovably mounted on the housing ( 1), which is the piston rod (8) made with an external thread (12) and prevented from rotates in relation to the housing (1), which is the nut (13) placed between the piston rod (8) and the adjustment device (18), whereby the nut is screwed onto the piston rod (8) and is moved axially on its outer side coupled to the adjusting device (18), such that turning the adjusting device (18) causes the nut to rotate relative to the piston rod (8), and that the nut (13) connected to the pointer (21) extends from the end of the device (18) for adjustment, wherein this indicator comprises an element for interrupting its axial movement towards the extreme end of the dispenser and further comprises a measuring scale (39) which shows the size of its axial movement in relation to the device (18) for adjustment, and thus the desired measured quantity.

2. Dispenser according to claim 1, characterized in that the nut (13) has at least one radial outlet (14, 15, 41) on the outside, which extends axially, and this outlet is slidably placed in one of the associated axial grooves ( 16, 17) on the inside of the device (18) for adjustment.

3. Dispenser according to claim 1 or 2, characterized in that the nut (13) and the associated indicator (21) include an element (23) for interrupting their axial movement from the further end of the dispenser.

4. Dispenser according to claim 1, 2 or 3, characterized in that the nut (13) and the indicator (21) are made integrally.

5. The dispenser according to claim 4, characterized in that the nut (13) and pointer (21) are shaped axially symmetrically with one button at the outer end, wherein the outer diameter of the button corresponds to the outer diameter of the device (18) for adjustment.

6. A dispenser according to claim 1, 2, 3, 4 or 5, comprising a detachable cover that protects the needle, characterized in that the cover (25) extends so axially that, when installed, it abuts the further end of the device (18 ) for adjustment and that the clamped ends of the cover (25) and the device (18) have mutually adapted parts (37, 38 and 40) of measuring scales that indicate the dosed quantity adjusted during the rotation of the device (18) in relation to the cover (25).

7. Dispenser according to claims 1 to 6, indicated by the marking elements (31, 32, 33, 34, 35 and 36) performed on the housing (1) and on the device (18) for adjustment, wherein these marking elements enable stepwise rotation of the adjustment device with tactile and, if desired, audible display of this movement, and that the cover (25) is arbitrarily and non-rotatingly placed with the corresponding part of the measuring scale opposite the part (37) of the measuring scale of the adjustment device in each position, and as a consequence stepwise rotation of the adjustment device.

8. Dispenser according to claims 1 to 7, characterized in that the prevention of rotation of the piston lever (8) in relation to the housing (1) is provided by a locking device (10, 11), whereby at least one lock (11) is provided on the housing (1), whereby this latch engages in the longitudinal groove (9) in the piston lever (8), whereby the bottom of the groove is designed with a suitable toothing that cooperates with the latch (11).