DK142185B - Generator for sterile, elutable, radioactive material. - Google Patents

Generator for sterile, elutable, radioactive material. Download PDF

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Publication number
DK142185B
DK142185B DK244174AA DK244174A DK142185B DK 142185 B DK142185 B DK 142185B DK 244174A A DK244174A A DK 244174AA DK 244174 A DK244174 A DK 244174A DK 142185 B DK142185 B DK 142185B
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generator
housing
eluent
holder
fitting
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DK244174AA
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Danish (da)
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DK142185C (en
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Thomas Vincent Czaplinski
Bernard John Bolter
Robert Earl Heyer
Gerald Anthony Bruno
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Squibb & Sons Inc
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    • GPHYSICS
    • G21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21GCONVERSION OF CHEMICAL ELEMENTS; RADIOACTIVE SOURCES
    • G21G4/00Radioactive sources
    • G21G4/04Radioactive sources other than neutron sources
    • G21G4/06Radioactive sources other than neutron sources characterised by constructional features

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  • High Energy & Nuclear Physics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Extraction Or Liquid Replacement (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Radiation-Therapy Devices (AREA)
  • Paints Or Removers (AREA)
  • External Artificial Organs (AREA)

Description

i 142185in 142185

Opfindelsen angår en generator til sterilt, eluer-bart radioaktivt materiale, med et cylindrisk kammer, midler til tilførsel af elueringsmiddel fra en forrådsbeholder til kammeret, og midler til aftapning af eluatet ved hjælp 5 af et undertryk fra dette kammer til en modtagelsesbeholder, hvorhos de pågældende åbninger for tilførsel og bortførsel af medium til og fra kammeret er lukket af udefra gennem-stikkelige lukkeorganer, og hvorhos kammeret og lukkeorganerne er samlet i et hus.BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a sterile eluentable radioactive material generator having a cylindrical chamber, means for supplying eluent from a reservoir to the chamber, and means for draining the eluate by means of a negative pressure from this chamber to a receiving vessel, the openings for supplying and dispensing medium to and from the chamber are closed by externally permeable closure means and wherein the chamber and closure members are assembled in a housing.

10 Anvendelse af radioisotoper til medicinsk brug både til diagnosticering og behandling er kendt, og der sker en stadig udvikling. Som regel elueres en isotopopløsning i en generator for radioaktivt materiale, når materialet skal anvendes, og under selve anvendelsen. Grunden er, 15 at datter-isotopen som regel har en umådelig kort halveringstid og skal fremstilles umiddelbart inden brugen. For at kunne imødekomme dette krav har man udformet et stort antal systemer for at gøre det muligt for lægen at samle generatorens forskellige dele og derefter eluere den opløsning, som 20 skal anvendes.10 The use of radioisotopes for medical use for both diagnosis and treatment is well known, and there is a continuing development. As a rule, an isotope solution is eluted in a radioactive material generator when the material is to be used and during use itself. The reason is that the daughter isotope usually has an extremely short half-life and must be produced immediately before use. In order to meet this requirement, a large number of systems have been devised to enable the physician to assemble the various parts of the generator and then elute the solution to be used.

Radioaktive generatorer har traditionelt været af den i USA patentskrift nr. 3.440.423 af den 22.4.69 beskrevne art. Generatoren indeholder radioaktivt materiale såsom 99 en søjle af aluminiumoxid, der er imprægneret med Mo 9 9m 25 Datter-isotopen - i dette tilfælde Tc - aftappes fra generatoren ved hjælp af en saltopløsning eller en opløsning af fortyndet saltsyre. Aluminiumoxidet er ophængt i et formstof hus, og der skal selvfølgelig være midler for tilførsel af elueringsmidlet og fjernelse af isotopen. Disse kendte 30 generatorer har haft gennemstikkelige propper, gennem hvilke væskerne kan tiføres og bortføres ved hjælp af kanyler.Radioactive generators have traditionally been of the kind disclosed in United States Patent No. 3,440,423 of 22.4.69. The generator contains radioactive material such as 99 a column of alumina impregnated with Mo 9 9m 25 The daughter isotope - in this case Tc - is drained from the generator by a saline solution or a solution of dilute hydrochloric acid. The alumina is suspended in a plastic housing, and of course there must be means for applying the eluent and removing the isotope. These known 30 generators have had permeable plugs through which the fluids can be discharged and removed by means of needles.

Senere generatorer indbefatter tilførsels- og bortførselsledninger, der er lukket ved hjælp af lignende gennemstikkelige propper.Later generators include supply and discharge lines closed by similar plug-in plugs.

35 Ved alle de kendte udformninger har det været nød vendigt at benytte besværligt og indviklet apparatur til beskyttelse af personalet for ikke at udsætte dette for stråling fra generatoren. På grund af beskyttelsesappa- 14218535 In all known designs, it has been necessary to use cumbersome and intricate apparatus to protect the personnel so as not to expose this to radiation from the generator. Due to protective device 142185

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2 raturet var det nødvendigt for lægen at samle tunge dele og at ophænge forskellige flasker, dvs. at lægen skulle udføre alt for mange forskellige ting.2 it was necessary for the physician to assemble heavy parts and to hang different bottles, ie. that the doctor had to do too many different things.

Generatoren ifølge opfindelsen er ejendommelig 5 ved, at den omfatter en fitting, der ved hjælp af forankringsorganer er adskilleligt forbundet med huset, og som er udstyret med tilkoblingsorganer for de to beholdere og med til tilkoblingsorganerne hørende gennemstikningsorganer, og at de gennemstikkelige lukkeorganer er placeret 10 på huset til samvirke med fittingens gennemstikningsorganer.The generator according to the invention is characterized in that it comprises a fitting which is separately connected to the housing by means of anchoring means, which is provided with coupling means for the two containers and with piercing means belonging to the coupling means, and that the permeable closure means are located 10. on the housing to cooperate with the piercing means of the fitting.

Herved opnås, at en tilkobling af forrådsbeholder og af modtagelsesbeholder kan ske ved en enkelt manipulering, når fittingen anbringes på huset. I sammenligning med de kendte apparater, hvor etablering af en tilkobling 15 kræver mange enkeltoperationer, medfører konstruktionen ifølge opfindelsen ikke alene en væsentlig simplificering af tilkoblingsarbejdet, men tillige på enkel måde en fuldstændig beskyttelse mod radioaktiv stråling.Hereby it is achieved that a connection of storage container and of receiving container can be effected by a single manipulation when the fitting is placed on the housing. Compared to the known apparatus, where establishing a connection 15 requires many single operations, the construction according to the invention not only results in a substantial simplification of the connection work, but also in a simple way a complete protection against radioactive radiation.

Ifølge opfindelsen kan fittingens forankrings-20 organer indbefatte et fremspring med et styresegment, og huset kan have en tilsvarende fordybning med et kontrasegment. Herved sikres på enkel måde fittingens korrekte anbringelse.According to the invention, the anchoring members of the fitting may include a projection with a guide segment and the housing may have a corresponding depression with a contrast segment. This ensures easy fitting of the fitting.

Ifølge opfindelsen kan gennemstikningsorganerne 25 være forbundet med tilkoblingsorganerne og rage ud fra disse. Gennemstikningen af lukkeorganerne vil da finde sted, når fittingen placeres på huset.According to the invention, the piercing means 25 can be connected to the connecting means and protrude therefrom. The piercing of the closure means will then take place when the fitting is placed on the housing.

Opfindelsen beskrives i det følgende nærmere ved hjælp af et eksempel under henvisning til tegningen, 30 på hvilken fig. 1 i perspektiv viser undersiden af en fitting ifølge opfindelsen, fig. 2 i perspektiv huset med sine øverste organer, fig. 3 et lodret snit gennem fittingen, der viser, 35 hvorledes kanylerne er anbragt, 3The invention will now be described by way of example only with reference to the accompanying drawings, in which: FIG. 1 is a perspective view of the underside of a fitting according to the invention; FIG. 2 is a perspective view of the housing with its upper members; FIG. 3 is a vertical section through the fitting showing how the needles are positioned;

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142186 fig. 4 i perspektiv generatoren, hvor en del er skåret bort forneden for at vise aftappekanylen, fig. 5 det indvendige af husets to sektioner lagt ved siden af hinanden, og 5 fig. 6 den på huset anbragte fitting med bortskårne dele for at vise, hvorledes kanylerne gennemstikker lukkehætterne.142186 fig. 4 is a perspective view of the generator, with a portion cut away below to show the drain cannula; FIG. 5 shows the interior of the two sections of the housing adjacent to each other, and FIG. 6 shows the fitting on the housing with cut parts to show how the needles pierce the closure caps.

Den i fig. 4 viste generator 10 for radioaktivt materiale svarer i sin virkningsmåde til den i USA pa-10 tentskrift nr. 3.440.423 beskrevne generator. Den indbefatter et cylindrisk kammer 12, i hvilket der er anbragt et aluminiumoxid af kromatografisk kvalitet, der er impræg-99 neret med Mo . Generatoren 10 afgiver sit produkt, som 99 indeholder Tc , ved hjælp af et elueringsmiddel, som kan 15 være en saltopløsning, en fortyndet saltsyreopløsning eller andre egnede opløsninger. Systemet til aftapning og tilførsel af elueringsmiddel vil blive nærmere beskrevet i det følgende.The FIG. 4, radioactive material generator 10 shown in its operation corresponds to the generator described in US Patent No. 3,440,423. It includes a cylindrical chamber 12 in which is mounted an alumina of chromatographic quality impregnated with Mo. Generator 10 delivers its product, which contains 99 Tc, by an eluent, which may be a saline solution, a dilute hydrochloric acid solution or other suitable solutions. The system for bottling and supply of eluent will be described in more detail below.

Generatoren 10 er ved sin øverste del 14 og sin neder-20 ste del 16 lukket ved hjælp af propper 17, der er udformet til at kunne gennemstikkes af kanyler. Ved de fleste kendte generatorer, som foroven og forneden lukkes ved hjælp af gennemstikkelige lukker, tilføres elueringsmidlet og bortføres det fremstillede præparat gennem sådanne lukker. Gene-25 ratoren ifølge opfindelsen får elueringsmidlet tilført gennem en ledning 18, medens præparatet fjernes gennem en ledning 20. Ved den viste udførelsesform er ledningerne individuelle rør, der er omgivet af fremspring 22 og 24, som er udformet i ét stykke med kammeret 12. Ledningerne 30 kan også være udformet i ét stykke med kammeret 12, idet hele enheden kan være fremstillet af støbt formstof. Ledningerne 18 og 20's ydre ende er lukket ved hjælp af lukkeorganer 26 og 28. Som det fremgår af fig. 4, indbefatter lukkeorganet en støbt skål 30 med en studs 32, som omslutter ledningernes 35 øverste ende. Enderne lukkes ikke af skålen 30, men ud- 142185The generator 10 is closed at its upper part 14 and its lower part 16 by means of plugs 17 designed to be pierced by needles. In most known generators, which are closed at the top and bottom by means of permeable closures, the eluent is applied and the preparation prepared is removed through such closures. The generator of the invention is fed to the eluent through a conduit 18 while the composition is removed through a conduit 20. In the embodiment shown, the conduits are individual tubes surrounded by projections 22 and 24 integrally formed with the chamber 12. The lines 30 may also be integrally formed with the chamber 12, the entire unit being made of molded plastic. The outer end of the wires 18 and 20 is closed by means of closure means 26 and 28. As can be seen from FIG. 4, the closure means includes a molded bowl 30 with a stud 32 which encloses the top end of the conduits 35. The ends are not closed by the bowl 30, but are extruded

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4 munder i skålens hulrum. Et gennemstikkeligt lukke 34, som f.eks. er fremstillet af silicone eller neoprene, er anbragt tætsluttende i skålen 30 og holdes på plads ved hjælp af en fleksibel metalring 33, der er krympet omkring skå-5 len 30 og lukket 34. De i forbindelse med lukkeorganet 28 beskrevne dele svarer til lukkeorganet 26's forskellige dele.4 mouths in the bowl cavity. A permeable closure 34, e.g. are made of silicone or neoprene, are sealed tightly in the cup 30 and held in place by a flexible metal ring 33 which is shrunk around the cup 30 and closed 34. The parts described in connection with the closure member 28 correspond to the closure member 26 different parts.

Elueringsmidlet tilføres generatoren 10 gennem lukket 34 til skålen 30, hvorfra det strømmer videre gennem led- 10 ningen 18. Da trykket i lukkeorganet 28 er mindre end i lukkeorganet 26, suges elueringsmidlet gennem generatoren 99 10, passerer gennem aluminiumoxidet, hvor det optager Tc , derfra ind i et nederste kammer 38 og gennem den nederste del af ledningen 20. En evakueret beholder suger væsken bort 15 fra lukket 28*s skål 30, og væsken kan derefter injiceres i en patient.The eluent is supplied to the generator 10 through the closure 34 to the bowl 30, from which it flows further through the conduit 18. As the pressure in the closure member 28 is less than in the closure member 26, the eluent is sucked through the generator 99 10, passing through the alumina where it receives Tc. thence into a lower chamber 38 and through the lower portion of conduit 20. An evacuated container draws away the liquid 15 from the closed 30 * cup 30, and the liquid may then be injected into a patient.

Den beskrevne generator skal være forsvarligt afskærmet, så at læge og patient ikke unødvendigt udsættes for stråling fra generatoren. Til dette formål benyttes 20 der et blyhus 42 til optagelse af hele generatoren 10.The generator described must be properly shielded so that the physician and patient are not unnecessarily exposed to radiation from the generator. For this purpose, a lead housing 42 is used to receive the entire generator 10.

Som vist i fig. 2 og 5 er huset 42 vertikalt delt op i to halvdele 44 og 46. Halvdelenes indvendige flader er udformet således, at de tæt omslutter generatoren 10 og ledningerne 18 og 20. Hver halvdel har en central fordybning 48 til tæt-25 sluttende optagelse af det cylindriske kammer, og desuden findes der kanaler 50 og 52 til optagelse af ledningerne 18 og 20. Halvdelen 44 kan være udformet tykkere end halvdelen 46 og kan således optage en større del af generatoren 10 og ledningerne 18 og 20. På denne måde vil den største del af de to kanaler 30 blive udformet i halvdelen 44, medens der kun vil være mindre fordybninger 54 og 56 i halvdelen 44 for at komplettere kanalerne 50 og 52. Der er ligeledes på forskellige steder udformet fordybninger 58 til optagelse af fremspringene 22 og 24 og studsene 32. De to halvdeles indvendige flader er udformet 35 med ribber og render for at sikre, at halvdelene 44 og 46 kommer 142185 5 til at passe nøjagtigt sammen.As shown in FIG. 2 and 5, the housing 42 is vertically divided into two halves 44 and 46. The inner surfaces of the halves are formed so as to closely enclose the generator 10 and the wires 18 and 20. Each half has a central recess 48 for close-up reception of the housing. cylindrical chambers, and in addition there are channels 50 and 52 for receiving the wires 18 and 20. Half 44 may be formed thicker than half 46 and thus can accommodate a larger portion of generator 10 and wires 18 and 20. In this way, the larger part of the two channels 30 will be formed in half 44, while there will be only minor recesses 54 and 56 in half 44 to complete channels 50 and 52. Also, recesses 58 are formed at various locations for receiving the projections 22 and 24 and the studs 32. The two half inner faces are formed 35 with ribs and grooves to ensure that the halves 44 and 46 fit exactly together.

Som vist i fig. 2, ligner huset 42, når dets halvdele 44 og 46 er sat sammen, en fuselage 60 med sidevinger 62 og 64. Halvdelene 44 og 46 er samlet ved hjælp af ikke viste 5 skruer, der optages i huller 68, samt ikke viste møtrikker i forsænkede huller i den modsatte halvdel, så at man opnår en sikker forbindelse. Vingerne 62 og 64 ender foroven i plane flader 70 og 72, der går over i fuselagen 60's øverste flade. Fladerne 70 og 72 går over i plane platforme 74 og 10 76. Formen af platformenes sidevægge 78 og 80 er af væsentlig betydning. Hver sidevæg er krummet og krumningerne forløber i hovedsagen parallelt. Denne udformning danner en nøglesikring og vil blive nærmere beskrevet. Når generatoren 10 er indesluttet i huset 42, ligger lukkerne 26 og 28 over plat-15 formene 74 og 76, så at elueringsmidlet kan tilføres og fjernes.As shown in FIG. 2, the housing 42, when its halves 44 and 46 are assembled, resembles a fuselage 60 with side blades 62 and 64. The halves 44 and 46 are assembled by means of 5 screws not shown shown in holes 68 and nuts not shown in FIG. countersunk holes in the opposite half to ensure a secure connection. The wings 62 and 64 end at the top of planar surfaces 70 and 72, which extend into the upper surface of the fuselage 60. The surfaces 70 and 72 change into planar platforms 74 and 10 76. The shape of the side walls 78 and 80 of the platforms is essential. Each side wall is curved and the curvatures extend substantially parallel. This design forms a key fuse and will be described in more detail. When the generator 10 is enclosed in the housing 42, the closures 26 and 28 lie above the platforms 74 and 76 so that the eluent can be applied and removed.

Som vist i fig. 1, 3 og 6 er tilførsels- og bortførselsudstyret for elueringsmidlet udformet i en fitting 100. Fittingen består for størstedelen af en rektangulær 20 bjælke 102 med åbninger 104 og 106 ved sine ender. Fra bjælken 102's underside rager der en tap eller et skive-lignende organ 108 ned, som kan være udformet i ét stykke med stangen. Skiven 108 har så stor diameter, at den dækker hele arealet mellem platformene 74 og 76. Skiven har en styreflade 110, 25 som har samme kontur som sidevæggen 78, og styrefladen 110 passer kun sammen med sidevæggen 78 og ikke med sidevæggen 80.As shown in FIG. 1, 3 and 6, the eluent supply and dispensing equipment is formed in a fitting 100. The fitting consists for the most part of a rectangular beam 102 with openings 104 and 106 at its ends. From the underside of the beam 102, a pin or disc-like member 108 projects down which may be integrally formed with the rod. The disc 108 is so large as to cover the entire area between the platforms 74 and 76. The disc has a guide surface 110, 25 which has the same contour as the side wall 78, and the guide surface 110 fits only with the side wall 78 and not with the side wall 80.

På denne måde sikrer man, at fittingen 100 kommer til at sidde rigtigt på huset 42.In this way, it is ensured that the fitting 100 will fit properly on the housing 42.

En i ét stykke udformet formstofholder 112 er forbundet 30 til bjælken 102's overside ved hjælp af skørter 114 og 116, der hænger ned i udsparinger 118 og 120 i bjælkens sidevægge 112 og 124 og er krympet omkring ribber 126 og 128. Holderen 112 indbefatter en holder 130 til en lille evakueret flaske for det færdige præparat. Holderen 130 rager ned i åbningen 106 35 og op over holderen 112's overflade. Foroven og forneden ved stangen 102 er holderen 130 lukket, undtagen ved sin midte, hvor den bærer en ved begge ender spids kanyle 132. Gennem denne kanyle fjernes præparatet via ledningen 20. Holderen 112 har 6 142185 også en holder 134 for en beholder for elueringsmiddel, idet holderen 134 ligesom holderen 130 rager ned i bjælken 102 og foroven rager op over denne. Holderen 134 er lukket på samme måde og bærer kanyler 136 og 138. Kanylen 138 svarer 5 til kanylen 132, den er spids ved begge ender og tjener for tilførsel af væske til generatoren 10. Kanylen 136 rager ikke ned under bjælken 102's øverste flade og tjener kun for tilførsel af luft til beholderen for elueringsmiddel. En ledning 142 forbinder kanylen 136 med atmosfæren. Et ikke 10 vist filter kan være anbragt ved holderen 130's nederste ende for at tilbageholde eventuelle partikler, så at disse ikke kan komme ind i kanylen 132.A one-piece plastic holder 112 is connected 30 to the upper side of the beam 102 by means of skirts 114 and 116 which hang into recesses 118 and 120 in the side walls 112 and 124 of the beam and are shrunk around ribs 126 and 128. The holder 112 includes a holder 130 for a small evacuated bottle for the finished preparation. The holder 130 projects down into the opening 106 35 and up over the surface of the holder 112. At the top and bottom of the rod 102, the holder 130 is closed, except at its center, where it carries a pointed cannula 13 at both ends. Through this cannula, the preparation is removed via line 20. The holder 112 also has a holder 134 for an eluent container. the holder 134, like the holder 130, projecting into the beam 102 and above it projecting above it. The holder 134 is similarly closed and carries needles 136 and 138. Needle 138 corresponds 5 to needle 132, it is pointed at both ends and serves to supply fluid to generator 10. Needle 136 does not project below the upper surface of beam 102 and serves only for supplying air to the eluent container. A conduit 142 connects the cannula 136 to the atmosphere. A filter not shown may be provided at the lower end of the holder 130 to retain any particles so that they cannot enter the needle 132.

Når apparatet skal bruges, samler lægen apparatets forskellige dele kort inden dets anvendelse. Til at begynde 15 med kan generatoren i sit lukkede hus 42 anbringes i en blyblok til yderligere beskyttelse mod stråling. Derefter samles fittingen 100 og huset 42, idet der sørges for, at skiven 108 kommer på sin rigtige plads, og fittingen trykkes ned, indtil kanylerne 132 og 138 har gennemstukket de respektive 20 lukker. En beholder eller flaske for elueringsmiddel anbringes omvendt på holderen 134, idet flaskens hals optages i holderen, og kanylerne 136 og 138 gennemstikker flaskens membranlukke.When the device is to be used, the doctor collects the various parts of the device shortly before its use. For starters, the generator in its closed housing 42 can be placed in a lead block for additional radiation protection. Then the fitting 100 and the housing 42 are assembled, making sure that the washer 108 is in its proper place and the fitting is pressed down until the needles 132 and 138 have pierced the respective 20 closures. An eluent container or bottle is inverted on the holder 134 as the neck of the bottle is inserted into the holder and the needles 136 and 138 pierce the diaphragm closure of the bottle.

Der er nu tilvejebragt en tilførselsvej for elueringsmidlet ind til generatoren 10. En evakueret lille flaske anbringes 25 på samme måde oven på holderen 130, hvor kanylen 132 gennemstikker den lille flaskes membranlukke. Trykforskellen mellem de to flasker får elueringsmidlet til at strømme gennem kanylen 138, forbi lukket 34, gennem ledningen 18 og gennem alu- 99 miniumoxidet, hvor det optager Tc . Derefter går væsken ind 30 i det nederste kammer 38, hvorfra den kommer ind i ledningen 20. Gennem kanylen 132 suges væsken så op i den lille flaske. På intet tidspunkt bliver systemet udsat for forurening, og der kan heller ikke forekomme lækage af strålingsvæske. Apparatet er let at samle, og der er meget ringe chance for fejl ved sammen-35 sætningen. Alle de forskellige dele er hensigtsmæssigt sikret mod stråling, indtil præparatet udtages for at blive injiceret.A supply path for the eluent is now provided to the generator 10. An evacuated small bottle is placed in the same manner on top of the holder 130, with the needle 132 piercing the diaphragm closure of the small bottle. The pressure difference between the two bottles causes the eluent to flow through the cannula 138, past the closure 34, through the conduit 18 and through the aluminum oxide where it absorbs Tc. Then, the liquid enters 30 into the lower chamber 38, from which it enters the conduit 20. Through the cannula 132, the liquid is then sucked up into the small bottle. At no time will the system be exposed to pollution, nor can radiation fluid leakage occur. The device is easy to assemble and there is very little chance of errors in the assembly. All of the various parts are suitably protected from radiation until the preparation is withdrawn to be injected.

DK244174AA 1973-05-04 1974-05-03 Generator for sterile, elutable, radioactive material. DK142185B (en)

Applications Claiming Priority (2)

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US35743373A 1973-05-04 1973-05-04
US35743373 1973-05-04

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DK142185B true DK142185B (en) 1980-09-15
DK142185C DK142185C (en) 1981-02-09

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* Cited by examiner, † Cited by third party
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FR1432721A (en) * 1965-02-10 1966-03-25 Saint Gobain Techn Nouvelles Device for the production of radio-elements
NL6607699A (en) * 1966-06-03 1967-12-04
US3440423A (en) * 1967-04-10 1969-04-22 Squibb & Sons Inc Process for preparing sterile radioactive material of the parentdaughter type
DE6944639U (en) * 1968-11-25 1970-06-04 Squibb & Sons Inc DEVICE FOR DISPENSING RADIOACTIVE MATERIAL
US3774035A (en) * 1971-07-12 1973-11-20 New England Nuclear Corp Method and system for generating and collecting a radionuclide eluate

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Publication number Publication date
FR2228278B1 (en) 1978-07-07
IE41282B1 (en) 1979-12-05
GB1473236A (en) 1977-05-11
DK142185C (en) 1981-02-09
CS214861B2 (en) 1982-06-25
NO741471L (en) 1974-11-05
AU6855274A (en) 1975-11-06
SU644405A3 (en) 1979-01-25
SE399146B (en) 1978-01-30
HU176019B (en) 1980-11-28
NL7405816A (en) 1974-11-06
DD111754A5 (en) 1975-03-05
DE2421530A1 (en) 1974-11-21
ES425923A1 (en) 1976-06-16
DE2421530C2 (en) 1988-04-14
YU36828B (en) 1984-08-31
IE41282L (en) 1974-11-04
ZA742729B (en) 1975-05-28
BE814533A (en) 1974-11-04
BG26962A3 (en) 1979-07-12
JPS5748760B2 (en) 1982-10-18
NL189886C (en) 1993-08-16
JPS5018899A (en) 1975-02-27
NL189886B (en) 1993-03-16
YU121474A (en) 1982-02-25
FI59532C (en) 1981-09-10
CA999685A (en) 1976-11-09
CH582506A5 (en) 1976-12-15
FI59532B (en) 1981-05-29
NO141829C (en) 1980-05-21
FR2228278A1 (en) 1974-11-29
NO141829B (en) 1980-02-11
IT1011320B (en) 1977-01-20

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