EP2074632B1 - Neuartige abgeschirmte containerstruktur für transport und lagerung einer radioaktiven quelle für medizinische verwendung - Google Patents

Neuartige abgeschirmte containerstruktur für transport und lagerung einer radioaktiven quelle für medizinische verwendung Download PDF

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Publication number
EP2074632B1
EP2074632B1 EP07823880A EP07823880A EP2074632B1 EP 2074632 B1 EP2074632 B1 EP 2074632B1 EP 07823880 A EP07823880 A EP 07823880A EP 07823880 A EP07823880 A EP 07823880A EP 2074632 B1 EP2074632 B1 EP 2074632B1
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EP
European Patent Office
Prior art keywords
shielded
lid
hooks
locking
deactivation
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EP07823880A
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English (en)
French (fr)
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EP2074632A1 (de
Inventor
Pierre-Marie Lemer
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Lemer Protection Anti X SAS
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Lemer Protection Anti X SAS
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    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F5/00—Transportable or portable shielded containers
    • G21F5/015—Transportable or portable shielded containers for storing radioactive sources, e.g. source carriers for irradiation units; Radioisotope containers
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F5/00—Transportable or portable shielded containers
    • G21F5/06—Details of, or accessories to, the containers
    • G21F5/12—Closures for containers; Sealing arrangements

Definitions

  • the present invention relates to a new shielded container structure made of radioprotective material, for the transport and storage of a radioactive source for medical use.
  • the patient is sometimes given a determined dose of a suitable radioactive substance for the purpose of diagnosis or treatment.
  • radioactive substances To comply with safety and radiation protection standards, these radioactive substances must be transported and stored in armored containers, which have the advantage of protecting any person likely to come into their immediate environment, whether patients or hospital staff, from radiation. , the individuals in charge of his transport, etc.
  • Current containers are generally composed of an armored body made of radioprotective material, provided with an opening for the entry and exit of the bottle containing the radioactive source.
  • a shielded cover also made of radioprotective material, is used to close this container and to stop the radiation passing through its opening.
  • the cover is simply placed on the opening of the shielded body, without particular locking means; this is of course a possible source of incident.
  • the current locking means are complex to implement; they further require the operator to firmly hold the container body during the installation and removal of the cover for their activation or deactivation. During these closing / opening operations, the person handling the lid and the container body eventually undergoes radioactive radiation which may not be negligible.
  • the Applicant has developed a container in which the lid can be locked very simply and very quickly on the container body, without forcing the operator to hold this container body for a long time and firmly.
  • the locking means in question have been shaped to be activated by a translational movement of the cover at the level of the opening of the container body, called “locking movement", along the axis of said opening and towards the bottom element of the container, which cover is further equipped with means for deactivating said locking means, to allow the separation of said shielded lid with respect to said container body.
  • the cover is provided with a plurality of retractable protruding lugs adapted to be housed by a snap-type phenomenon within at least one complementary housing formed at the opening of the body of the body. container.
  • these projecting lugs cooperate, on the one hand, with spring means shaped to tend to maintain them in the locking position, and on the other hand, with a deactivating member controllable by an operator for manipulating said lugs protruding in their retracted position.
  • the lugs are advantageously in the form of hooks articulated at one of their ends and whose other end is projecting inwards so as to cooperate with an annular groove open towards the outside and arranged at the opening of the container body.
  • the projecting hooks cooperate with the operator-controllable deactivating member to pivot them outward in their retracted position.
  • the cover is advantageously equipped with a handle whose operation by the operator ensures the displacement of the deactivating member so as to control the displacement of the projecting members between the deployed positions and folded; alternatively, the deactivating member is operable in the deactivation position, corresponding to the retracted position of the hooks, by application by the operator of a magnetic field generated by means of a magnetic handle attached to said cover.
  • the deactivating member is advantageously in the general form of a ring operable in axial translation, between the lower rest position and the upper deactivation position; this deactivating member is provided with a lower flange flared outwards to form the operating cam acting on the hooks by means of support rollers, each carried by one of said hooks, the latter being associated with elastic return means in the form of an elastic ring tending to keep them in the active locking position.
  • the container body consists of a shielded inner part fitted into an outer portion also shielded, these two shielded portions being each composed of a sidewall belt associated with a bottom member.
  • the inner part, on the radioactive source side, is made of a radioprotective material having radioprotective characteristics greater than those of said outer part; the thickness of these inner and outer parts depends on the level of radiation protection sought.
  • the container body comprises an inner portion of tungsten, nested in an outer portion made of lead; in this case, the closure cover is locked on the inner part, which has the advantage of being stronger and less malleable than lead.
  • the container body further comprises a peripheral shell of plastic material, covering the surface of its shielded outer portion.
  • This plastic shell advantageously consists of a belt of side walls whose lower edge is associated with a bottom element and whose upper edge is extended by an upper return covering at least the upper edge of the shielded outer portion; the bottom element and the lower edge of the sidewall belt of the plastic shell are provided with complementary structural means allowing their assembly by permanent fitting or removable.
  • This plastic shell has the advantage of being inexpensive, and thus to be replaced when it is degraded; it is also an envelope of protection for the outer lead part of the container, which is relatively sensitive to physical impacts such as shock or friction.
  • the shielded container 1, shown schematically and in section on the figure 1 is suitable for the transport of a container 2 containing a radioactive substance, intended for example for a medical use.
  • This container 1 comprises a cylindrical body 3, made of radioprotective materials (namely the combination of a thickness of tungsten and a lead thickness).
  • This container body 3 is composed of a cylindrical side wall 3 is associated with a bottom element surface 3 b; the upper edge 3 c of the cylindrical wall 3a delimits a circular top opening 4, closed on this figure 1 by a shutter cover 5 also made of radioprotective material.
  • the shutter cover 5 comprises locking means with the container body 3, shaped to be activated by a translational movement of the cover 5 at the opening 4, said "locking movement", this along the axis of this opening 4 and towards the bottom element 3b facing; this cover 5 is further equipped with means for deactivating its locking means to allow separation of said shielded cover 5 with respect to said container body 1 (always by translation).
  • closure cover 5 shown in isolation on the Figures 2 to 5 , is mainly made of tungsten.
  • This cover 5 has a generally circular shape, of central axis 6; it comprises a main body 7 comprises a lower portion 7 has a generally cylindrical shape and an upper part 7b of frustoconical general shape surmounted by a head 8 consists of a circular central portion 8a, the edge is extended by an annular skirt 8 b extending opposite and away from the main body 7.
  • the lower part 7a of the main body 7 comprises an O-ring 7 c, for sealing the lid 5 when locked to the container body 3.
  • This lid 1 is equipped with means for locking it on the container body 3.
  • These locking means are composed here of four mobile lugs 11 in the form of hooks, regularly distributed in the space between the main body 7 and the skirt 8b facing.
  • These hooks 11 also each carry a support roller 14 mounted to rotate freely about an axis 14a parallel to its axis of rotation 13, for reducing friction during the operation of the hooks 11.
  • Elastic return means 15 are associated with the hooks 11 to tend to keep them in the locking position.
  • These return means 15 are here in the general form of an elastic ring.
  • the deactivation member 16 in question is in the general shape of a ring having a lower edge 16 has flared outwardly and on which the roller 14 of the hooks 11 is kept pressed by the action of their means of elastic return 15.
  • the lower edge 16a of the deactivation member 16 forms an operating cam hooks 11 between their locking position and their unlocking position.
  • the elastic return means 17 may consist of spiral springs inserted in housings formed in the ring 16, interposed between said ring and the cover head 8.
  • the locking procedure consists in properly positioning the closure cover 5 opposite the opening 4, and resting on the upper edge 20.
  • the lid 5 is then properly locked at the top edge 3c of the container 3, and effectively closes the opening 4 of the container body 3 ( figure 1 ).
  • the operator uses an attached means 24 emitting a magnetic field, shaped for example magnetic handle, for causing the control of the deactivating member 16 described above in its deactivation position.
  • the operator positions his magnetic handle 24 in contact with the surface of the cover 5.
  • the magnetic field emitted by this handle 24 causes the displacement of the deactivating member 16 upwards, in its upper position called deactivation.
  • the lower edge 16a of the deactivation member 16 then pushes the rollers 14 outwardly, thereby obtaining the distance in the unlocked position of the hooks 11 associated.
  • this container structure allows a simple, fast and effective locking of the lid on the container body.
  • this container is interesting in terms of safety, since the operator must report additional resources to open the lid, thus limiting the risk of unintentional opening.
  • This body 3 consists of an inner part 29 made of tungsten, nested in an outer portion 30 made of lead; these two armored parts are each composed of a sidewall belt associated with a bottom element.
  • the inner portion 29, on the radioactive source side is made of a radioprotective material having radioprotective characteristics greater than those of the outer portion 30, the thickness of these inner and outer portions 29 being a function of the radiation protection level. research.
  • the two parts 29 and 30 are here held together by means of two cylindrical through-tungsten inserts 33; the outer free end 33 a of these inserts also serves to hold, by appropriate means, the two free ends with a handle 34 for transporting the container 1.
  • the extension 20 of the container body, on which the closure cap 5 is locked, is integral and constituent of said inner tungsten portion 29.
  • the locking hooks 11 on the inner portion 29 allows to use its characteristics of resistance to wear and friction; this locking also allows a continuity of tungsten shielding, which further optimizes the quality of radiation protection obtained.
  • the reinforced portion of lead 30 includes an upper extension just surround the outer surface of the skirt cover 8 b.
  • the body 3 further comprises a peripheral shell 31 of plastic material, covering the surface of its shielded outer portion 30.
  • This plastic shell 31 consists of a cylindrical wall 31a whose lower border is associated with a bottom element 31b and whose upper edge is extended by an upper return 31c covering the upper edge of the shielded outer part 30.
  • the base member 31b and the lower edge of the side wall 31a of the plastic shell 31 are provided with complementary structural means 32, type grooves / ribs, allowing their assembly by interlocking (removable or not).
  • the possibility of disassembly in question may be useful to facilitate the replacement of this outer shell when it is worn or damaged.
  • this particular structure of the container body 3, combining a tungsten shield and a lead shield, can be used with a cover not having the particular locking means described above.
  • FIGS. 8 to 11 show another possible form of a container according to the invention, wherein the closure cover is provided with locking means deactivatable by mechanical means, in this case a handle provided for this purpose.
  • This container 35 is similar to that described above in relation to the Figures 1 to 7 .
  • the handle 37 carries a transverse axis 38 from which extend two vertical rods 39 fixed to the deactivating member 16.
  • the handle 37 is folded against the cover 36, which corresponds to the lower rest position of the deactivating member 16 and the locking position of the hooks 11 ( Figures 8 and 9 ). Then the lid 36 is positioned facing the opening 4 of the container body 3 ( figure 9 ), then the operator pushes the cover 36 towards the bottom element 3b until the hooks 11 are housed by snapping into the housing 21 of the body 3 ( figure 10 ). The lid 36 is thus suitably locked to the body 3.
  • the transverse axis 38 moves upwards, under the leverage effect generated by the support of the two lateral extensions 40 against the upper face of the cover 36, causing axial traction on the vertical rods 39 which ensure in turn a movement of the deactivating member 16 in its upper disabling position.
  • This latter embodiment has the advantage of being relatively simple and does not require the use of added means to unlock the cover 36.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Closures For Containers (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Packages (AREA)
  • Radiation-Therapy Devices (AREA)

Claims (11)

  1. Container für den Transport eines Behälters (2) der eine radioaktive Substanz für medizinische Verwendung enthält, wobei der Container (1) einerseits einen Körper (3), der gegen die Strahlungsemission abgeschirmt ist, bestehend aus einem Gürtel aus Seitenwänden (3a), der mit einem Basiselement (3b) assoziiert ist und eine obere Öffnung (4) begrenzt, und andererseits eine abgeschirmte Verschlusskappe (5, 36) aufweiset, die an der oberen Öffnung (4) mit Hilfe von Verriegelungsmitteln (11) angebracht werden kann, wobei die Verriegelungsmittel (11) ausgebildet sind, um durch eine Translationsbewegung (22) der Kappe (5, 36) an der oberen Öffnung (4), "Verschlussbewegung" genannt, aktiviert zu werden, und zwar entlang der Achse der Öffnung (4) und in Richtung des gegenüberstehenden Bodenelements (3b), dadurch gekennzeichnet, dass die Kappe (5, 36) außerdem mit Mitteln (16) ausgestattet ist, die die Deaktivierung der Verriegelungsmittel (11) ermöglichen, um die Trennung der abgeschirmten Kappe (5, 36) von dem Containerkörper (3) zu erlauben.
  2. Abgeschirmter Container nach Anspruch 1, dadurch gekennzeichnet, dass die Kappe (5, 36) mit mehreren einziehbaren, vorstehenden Zapfen (11) versehen ist, die durch eine Art Einrast-Vorgang in mindestens einem zusätzlichen Lager (21) zu Liegen kommen können, das an der Öffnung (4) des Containerkörpers (3) angebracht ist, wobei die vorstehenden Zapfen (11) zwischen zwei Positionen bewegt werden können:
    - einer Verriegelungsposition, in der die vorstehenden Zapfen (11) durch eine Art Einrast-Vorgang während der Verriegelungstranslationsbewegung in das Lager (21) eindringen, und
    - einer eingezogenen Position, die durch die Deaktivierungsmittel (16) ausgeführt wird, in der die vorstehenden Zapfen (11) außerhalb der Abmessungen des Lagers (21) liegen, wodurch sie die Trennung der abgeschirmten Kappe (5, 36) vom Containerkörper (3) ermöglichten,
    und dadurch, dass die vorstehenden Zapfen (11) einerseits mit Federmitteln (15), die ausgebildet sind, um dazu beizutragen, sie in Verriegelungsposition zu halten, und andererseits mit einem Deaktivierungsorgan (16) kooperieren, das durch einen Bediener steuerbar ist, um die vorstehenden Zapfen (11) in ihre eingezogene Position zu lenken.
  3. Abgeschirmter Container, nach Anspruch 2, dadurch gekennzeichnet, dass die Zapfen (11) die Form von Haken haben, die an einem ihrer Enden
    (11a) gelenkig gelagert sind und deren anderes Ende (11b) nach innen vorstehend ist, um mit einer ringförmigen Nut (21) kooperieren zu können, die nach außen geöffnet ist und an der Öffnung (4) des Containerkörpers angebracht ist, wobei die vorstehenden Haken (11) mit dem Deaktivierungsorgan (16) kooperieren, das durch den Bediener steuerbar ist, um deren Drehung nach außen in ihre eingezogenen Position hervorrufen zu können.
  4. Abgeschirmter Container nach Anspruch 3, dadurch gekennzeichnet, dass das Deaktivierungsorgan (16) aus einem Stück besteht, das ein Teil (16a) aufweist, das eine Nocke bildend nach außen erweitert ist, wobei das Deaktivierungsorgan (16) im Innern der Kappe (5, 36) zwischen zwei Positionen beweglich ist:
    - einer Ruheposition, in der die Haken (11) in Verriegelungsposition sind, und
    - einer Deaktivierungsposition, die durch die Steuerung durch den Bediener erhalten wird, in der ihr erweiterter Teil (16a) die Haken (11) schiebt, um deren Drehung nach außen in die eingezogene Position hervorzurufen.
  5. Abgeschirmter Container nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, dass die Kappe (36) mit einem Griff (37) ausgestattet ist, dessen Bewegung die Verschiebung des Deaktivierungsorgan (16) sicherstellt, um die Verschiebung der vorstehenden Organe (11) zwischen der eingeklappten und der ausgeklappten Position zu steuern.
  6. Abgeschirmter Container nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, dass das Deaktivierungsorgan (16) in die Deaktivierungsposition bewegt werden kann, die einer eingezogenen Position der Haken (11) entspricht, indem der Bediener ein Magnetfeldes anlegt, das mittels eiles magnetischen Griffs (24) erzeugt wird, der auf der Kappe (5) aufgesetzt ist.
  7. Abgeschirmter Container nach einem der Ansprüche 3 bis 6, dadurch gekennzeichnet, dass das Deaktivierungsorgan (16) die allgemeine Form eines Rings hat, der zwischen der unteren Ruheposition und der oberen Deaktivierungsposition in axialer Translation bewegbar ist, wobei das Deaktivierungsorgan (16) mit einer unteren Rand (16a) versehen ist, der nach außen erweitert ist, um die Betätigungsnocke zu bildern, die auf die Haken (11) mittels Stützrollen (14) wirkt, die jeweils von einem der Haken (11) getragen werden, wobei diese letztgenannten nach mit Mitteln zum elastischen Rückholen (15) in Form eines elastischen Rings assoziiert sind, die dazu beitragen, sie in aktiver Verriegelungsposition zu halten.
  8. Abgeschirmter Container nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass sich sein Körper (3) aus einem abgeschirmten inneren Teil (29) zusammensetzt, das in ein äußeres Teil (30) eingefügt ist, das ebenfalls abgeschirmt ist, wobei sich die abgeschirmten Teile (29, 30) jeweils aus einem Gürtel aus Seitenwänden zusammensetzen, der mit einem Bodenelement assoziiert ist, und dadurch, dass das untere Teil (29) auf der Seite der radioaktiven Quelle aus einem radioprotektiven Material ausgeführt ist, das höhere radioprotective Merkmale hat als das äußere Teil (30), wobei die Dicke dieser inneren (29) und äußeren (30) Teile vom gesuchten Radioprotektionsniveau abhängig ist.
  9. Abgeschirmter Container nach Anspruch 8, dadurch gekennzeichnet, dass der Körper (3) ein inneres Teil (29) aus Wolfram aufweiat, das in ein äußeres Teil (30) eingefügt ist, das aus Bei ausgeführt ist, wobei sich die Verschlusskappe (5, 36) auf dem inneren Teil (29) verriegelt.
  10. Abgeschirmter Container nach einem der Ansprüche 8 oder 9, dadurch gekennzeichnet, dass der Körper (3) noch ein Außengehäuse (31) aus Kunststoffmaterial aufweist, das die Oberfläche seines abgeschirmten äußeren Teils (30) bedeckt.
  11. Abgeschirmter Container nach Anspruch 10, dadurch gekennzeichnet, dass sich das Kunststoffgehäuse (31) aus einem Gürtel aus Seitenwänden (31a) zusammensetzt, dessen Ränder mit einem Bodenelement (31b) und einem oberen Einschnitt (31c) assoziiert sind, der mindestens den oberen Rand des abgeschirmten äußeren Teils (30) bedeckt,
    und dadurch, dass das Bodenelement (31b) und der untere Rand des Gürtels aus Seitenwänden (31a) des Kunststoffgehäuses (31) mit zusätzlichen Strukturmitteln (32) versehen sind, die ihren Zusammenbau durch definitives oder demontierbares Einfügen ermöglichen.
EP07823880A 2006-09-29 2007-09-28 Neuartige abgeschirmte containerstruktur für transport und lagerung einer radioaktiven quelle für medizinische verwendung Active EP2074632B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0608587A FR2906638B1 (fr) 2006-09-29 2006-09-29 Nouvelle structure de conteneur blinde pour le transport et le stockage d'une source radioactive a usage medical
PCT/FR2007/052046 WO2008040904A1 (fr) 2006-09-29 2007-09-28 Nouvelle structure de conteneur blinde pour le transport et le stockage d ' une source radioactive a usage medical

Publications (2)

Publication Number Publication Date
EP2074632A1 EP2074632A1 (de) 2009-07-01
EP2074632B1 true EP2074632B1 (de) 2010-11-24

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EP07823880A Active EP2074632B1 (de) 2006-09-29 2007-09-28 Neuartige abgeschirmte containerstruktur für transport und lagerung einer radioaktiven quelle für medizinische verwendung

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Country Link
US (1) US8110821B2 (de)
EP (1) EP2074632B1 (de)
JP (1) JP2010505105A (de)
KR (1) KR20090057407A (de)
CN (1) CN101517657B (de)
AT (1) ATE489709T1 (de)
AU (1) AU2007304082A1 (de)
CA (1) CA2664897C (de)
DE (1) DE602007010809D1 (de)
FR (1) FR2906638B1 (de)
WO (1) WO2008040904A1 (de)

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EP2074632A1 (de) 2009-07-01
AU2007304082A1 (en) 2008-04-10
CA2664897A1 (fr) 2008-04-10
ATE489709T1 (de) 2010-12-15
WO2008040904A1 (fr) 2008-04-10
CA2664897C (fr) 2014-10-28
CN101517657B (zh) 2012-08-29
JP2010505105A (ja) 2010-02-18
FR2906638A1 (fr) 2008-04-04
DE602007010809D1 (de) 2011-01-05
US20100032591A1 (en) 2010-02-11
FR2906638B1 (fr) 2008-12-19
CN101517657A (zh) 2009-08-26
US8110821B2 (en) 2012-02-07
KR20090057407A (ko) 2009-06-05

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