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WO1997026933A1 - Seringue jetable autodestructible - Google Patents

Seringue jetable autodestructible Download PDF

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Publication number
WO1997026933A1
WO1997026933A1 PCT/CA1997/000066 CA9700066W WO9726933A1 WO 1997026933 A1 WO1997026933 A1 WO 1997026933A1 CA 9700066 W CA9700066 W CA 9700066W WO 9726933 A1 WO9726933 A1 WO 9726933A1
Authority
WO
WIPO (PCT)
Prior art keywords
barrel
piston
plunger
barrel wall
syringe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CA1997/000066
Other languages
English (en)
Inventor
Douglas C. V. Campbell
Peter Frise
Frank Johnson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AU14349/97A priority Critical patent/AU1434997A/en
Publication of WO1997026933A1 publication Critical patent/WO1997026933A1/fr
Anticipated expiration legal-status Critical
Priority to US09/123,141 priority patent/US6120479A/en
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/50—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
    • A61M5/508—Means for preventing re-use by disrupting the piston seal, e.g. by puncturing
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/50—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
    • A61M5/5013—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/50—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
    • A61M2005/5006—Having means for destroying the syringe barrel, e.g. by cutting or piercing

Definitions

  • the invention relates to disposable syringes and especially syringes of the auto-destruct type which are rendered non-reusable during or after a first use.
  • Communicable diseases are transmitted in different ways, for example, by contact with body fluids of an infected person. Infection with a communicable disease is undesired and is especially unfortunate when due to inadvertance or ignorance such as when caused by the sharing or reuse of hypodermic syringes.
  • the practise of sharing and/or reusing hypodermic syringes is especially prevelant among drug users and in third world countries where syringes are used in vaccination campaigns. Often several children are inoculated with the same syringe either by using large capacity syringes for multiple small injections, or by refilling and reusing the syringes after insufficient sterilization.
  • the syringe includes a barrel, a piston, and a plunger for moving the piston axially in the plunger.
  • the knives are mounted on flexible arms which are connected with the plunger and are retracted during the aspiration stroke of the syringe.
  • the plunger is pushed against the piston which moves the free end of the arms along a ramp on the piston. This forces the knives against the barrel wall.
  • the plunger and, thus, the knives are oriented to be opposite preselected areas of reduced thickness in the barrel wall.
  • the reduced wall thickness permits penetration of the knives and cutting of the barrel wall, thereby destroying the barrel behind the piston as it is forced into the barrel during injection. As a result, the syringe cannot be reused, since the barrel will no longer hold a vacuum and any liquid contained therein will leak through the cut areas of the barrel wall.
  • the thickness of the syringe barrel wall is significantly reduced compared to conventional auto-destruct syringes and along the whole circumference of the barrel.
  • the wall thickness is selected to permit permanent deformation of the barrel wall with cutting or burrowing elements mounted to the syringe plunger or piston thereby breaking the seal between the barrel wall and the piston. Since the barrel wall is evenly thin about the whole circumference of the barrel, deformation or the barrel wall is possible in any rotational orientation of the plunger or piston.
  • permanent deformation of the barrel wall is achieved with blunt burrowing elements mounted to the piston which are forced radially outward against the barrel wall during the second aspiration stroke and generate a permanent groove in the inner surface of the barrel wall which cannot be sealed by the piston or a piston seal mounted thereon so that air can pass around the piston.
  • blunt burrowing elements mounted to the piston which are forced radially outward against the barrel wall during the second aspiration stroke and generate a permanent groove in the inner surface of the barrel wall which cannot be sealed by the piston or a piston seal mounted thereon so that air can pass around the piston.
  • an auto-destruct syringe comprising a syringe barrel for holding a fluid having an open rear end and a closed front end and a passage extending through the closed front end to permit expulsion of fluid from the interior of the barrel; a piston reciprocatable in the barrel and sealingly engaging the barrel wall; a plunger having a forward portion normally positioned in the barrel and a rearward portion to be manipulated by a user of the syringe; coupling means for connecting the piston with the plunger to permit axial movement of the piston in the barrel by operation of the plunger; deforming means for permanently deforming the barrel wall to brake the seal between the piston and the barrel wall, the deforming means being mounted to one of the piston and the plunger and movable from an at rest position wherein the barrel wall is not deformed by the deforming means, to a barrel wall engaging position wherein the barrel wall is permanently deformed by the deforming means; and engaging means for forcing the deforming means into the barrel wall engaging position upon rearward movement of the piston after
  • the term permanently deforming the barrel wall in the context of this application is intended to include puncturing or cutting of the barrel wall, burrowing into the side wall to produce a permanent groove, and other actions which will break the seal between the piston and the barrel wall and allow leakage around the piston, thereby preventing the generation of pressure or vacuum in the barrel.
  • Fig. 1 is an axial cross-section of a preferred embodiment of the auto- destruct syringe in accordance with the invention
  • Fig. 2 is an enlarged side view of the plunger of the embodiment shown in Fig. 1 ;
  • Fig. 2a is a cross-section through the plunger shown in Fig.2 taken along line 2a-2a;
  • Fig. 3 is an axial cross-section taken along the plane of Figs. 1 and 2 through the piston/plunger combination of the preferred embodiment shown in Fig. 1 during the first aspiration stroke;
  • Fig. 4 is an axial cross-section through the piston/plunger combination shown in Fig. 3 but taken along a plane orthogonal to the plane of Fig. 3 and illustrating the combination during the injection stroke;
  • Fig. 5 illustrates the piston/plunger combination shown in Fig. 4 but during the second aspiration stroke
  • Fig. 6 is an axial cross-section through the piston/stopper combination of the embodiment shown in Fig. 1 ;
  • Fig. 7 is a rear end view of the piston seal of the embodiment shown in
  • Fig. 8 is a cross-section through the piston/stopper combination 50 taken along a plane rotated 45° from the one of Fig. 6;
  • Fig. 9 illustrates the piston/plunger combination shown in Fig. 5 but with deforming elements which have blunt edges and burrow into the barrel wall instead of cutting it.
  • an auto-destruct disposable syringe in accordance with the invention is packaged in the empty condition and allows aspiration of an injectable liquid prior to injection.
  • the syringe includes a mechanism which breaks the seal between the piston of the syringe and the syringe barrel when reuse is attempted after full or partial injection.
  • a syringe in accordance with the invention as shown in Fig.
  • syringe body 10 including a barrel 12, a piston assembly 50 including a piston 60 and an auto-destruct mechanism for permanent deformation of the barrel wall 13, a plunger 80 and a coupling mechanism connecting the plunger 80 with the piston 50 thereby allowing the user of the syringe to reciprocate the piston by way of the plunger.
  • the syringe body 10 consists of the cylindrical barrel 12 which has an open rear end 14 and a closed front end 20.
  • a collar 16 is provided at the rear end 14 which includes a pair of diametrically opposite wings 18 that provide finger rests during aspiration and injection.
  • the front end 20 of the barrel is provided with an integral needle -mount 22 for attachment of a hypodermic needle 30.
  • the front end 20 further has a fluid passage 23 for the expulsion of fluid from the barrel interior and into the needle 30.
  • the needle 30 can be removably attached to the mount 22 for separate disposal, it is preferably permanently affixed to the needle mount 22 to prevent the reuse of possibly contaminated needles with new syringes.
  • the piston assembly 50 includes a substantially cup-shaped piston seal or stopper 52 which is made of elastomeric seal material such as butyl rubber used in conventional syringe piston seals.
  • a piston seal in the form of a separate stopper is preferred, it is known in the art that a satisfactory seal between the piston and the barrel wall can be achieved without separate stoppers, i.e. by seals integrated into the piston or by tight engagement between the piston and the barrel wall.
  • the stopper 52 is connected with piston 60 by way of an interference fit (see Figs. 6-8).
  • the cylindrical sidewall 51 of the stopper 52 has an outer diameter which is slightly larger than the inner diameter D of the barrel 12 to ensure a liquid tight sliding engagement therebetween.
  • a circumferential groove 53 is provided in the outer surface of the stopper sidewall 51 to improve the sealing characteristics of the stopper.
  • the stopper can have a diameter which is marginally smaller than the barrel diameter D and include one or more circumferential sealing ribs giving the stopper an overall diameter larger than D thereby ensuring a reliable seal.
  • the stopper sidewall 51 is provided with four circumferentially equally spaced, radially inwardly projecting flaps 55 which are integral with the sidewall 51 and extend between the drag/carrier arms of the piston that will be described in more detail in the following.
  • the piston 60 (see Figs. 3-5) has a cylindrical base 61 which snugly fits into the stopper 52 and two pairs of arms extending from the base in rearward direction.
  • a pair of diametrically opposed axially extending drag arms 62 form a coupling mechanism for connecting the piston 60 with the plunger 80.
  • each drag arm has a hook-shaped rear end 63 for engagement with an enlarged, mushroom shaped head 81 on the forward end 83 of the plunger 80. This provides a coupling mechanism which allows the piston 60 to be moved rearward in the barrel 12 by pulling back the plunger 80 during the initial aspiration stroke.
  • the plunger 80 (see Figs. 2 and 2a) has a shaft 82 of substantially square cross-section and guide plates 83 integral with the shaft 82 to center the shaft in the barrel.
  • a thumb plate 84 is integrally molded onto a rear end 85 of the shaft, while the forward end 86 of the plunger, which end normally extends into the barrel 12, includes the mushroom-shaped head 81 for engagement by the hook-shaped ends 63 of the drag arms 62.
  • the shaft front end is further provided with a frustoconical forwardly inclined ramp portion 87 which is located behind head 81 and forms part of a barrel wall deforming mechanism 90 of the syringe.
  • the barrel wall deforming mechanism 90 provides for permanent deformation of the barrel wall 12 when an attempt is made to refill the syringe. This breaks the seal between the stopper 52 and the barrel wall, which renders the syringe useless.
  • the deforming mechanism consists of a pair of diametrically opposed axially extending flexible carrier arms 64 connected to and extending rearward from the piston base 61.
  • the carrier arms 64 and the drag arms 62 are alternately positioned and circumferentially evenly spaced about the center of the piston base 61.
  • the carrier arms 64 respectively include at their free end a radially outwardly protruding integral deforming element 66 such as the sharp- edged cutters 67 of substantially triangular cross-section illustrated in Figs.
  • a blunt edged burrowing element 67a (see Fig. 9) which is preferably of the same size and shape as the cutters 67, but has rounded edges and therefore burrows into the barrel wall instead of cutting it.
  • a radially inwardly directed hook portion 68 is provided at the free end of each carrier arm 64 which hook portion provides for a reliable connection between the piston and the plunger during the second aspiration stroke (auto-destruction stroke) and, thus, prevents disconnection of the plunger from the piston subsequent to injection.
  • the deforming elements 66 are not forced against the barrel wall and are preferably closely spaced therefrom (see Fig. 3).
  • the hook portions 68 protrude radially inwardly to such an extend that they engage the ramp portion 87 on the forward end 83 of the plunger 80 when the latter is completely inserted into the piston 60 (see Fig. 4). Furthermore, the hook portions 68 ride up on the ramp portion 87 when the plunger is pulled back in the piston 60 until the rear face of the plunger head 81 engages the hook portions, thereby forcing the attached deforming elements 66 into the barrel wall.
  • the angle of the ramp portion 87 is selected such that the deforming elements are pushed radially outwardly with sufficient force to result in permanent deformation of the barrel wall and, thus, breaking of the seal between the stopper and the barrel wall.
  • the ramp portion 87 encloses an angle with the longitudinal axis of the plunger 80 of 15 c -
  • the cutting elements are preferably extrusion molded of the same material as the remainder of the piston 60, for example polypropylene. However, they can also be made of a tougher or harder material such as polycarbonate, especially when the deforming elements are intended to cut the barrel wall.
  • the coupling mechanism is preferred for use in a syringe in accordance with the invention, other coupling elements which provide a reliable connection between the plunger and the piston during the first and second aspiration strokes and permit sufficient movement therebetween for engagement of the deforming mechanism.
  • the coupling mechanism and the deforming mechanism can be combined into a single structure, for example, by mounting the hook portions 68 and the deforming elements 66 on the drag arms.
  • the drag arms 62 in the preferred embodiment are longer than the carrier arms 64.
  • the hook-shaped ends 63 of the drag arms 62, the head 81 of the shaft, the ramp portion 87 and the hook portions 68 of the carrier arms 64 respectively are dimensioned such that when the plunger is inserted into the piston until the hook- shaped ends 63 engage behind the head 81, the hook portions 68 and ramp portion 87 are axially spaced apart.
  • the drag arms 64 are shaped such that the hook- shaped ends 63 thereof are normally radially spaced apart from the barrel wall. The spacing is selected such that the drag arms 62 do not engage the barrel wall when the mushroom-shaped head 81 of the plunger 80 is positioned therebetween during assembly of the syringe.
  • the stopper 52 extends rearward around the piston 60, or in other words the piston is recessed into the stopper in the preferred embodiment.
  • the deforming elements 66 are located closely adjacent the seal line between the stopper 52 and the barrel wall 12 so that substantially no portion of the barrel wall will remain intact when refilling of the syringe is attempted after injection.
  • the piston 60 with the drag and carrier arms 62, 64 and the plunger 80 are each preferably integrally extrusion molded from an extrudable, thermoplastic material, preferably polypropylene.
  • the thickness of the barrel wall can be reduced along diametrically opposite grooves 106 as known in the art from the self-destruct syringe disclosed by Fenet in Canadian Patent Application SN 2,045,499. If the barrel wall is provided with such grooves, the rotational position of the carrier arms 64 in the barrel must be controlled to ensure reliable engagement of the deforming elements 66 with the grooves. Furthermore, it may be possible to render the syringe reusable by rotating the piston 60 in the barrel until the deforming elements 66 are no longer opposite one of the grooves.
  • the barrel wall in the preferred embodiment is made evenly thin along its whole circumference so that rotation of the piston 66 in the barrel no longer has any effect on the function of the deforming elements.
  • the deforming elements 66 are burrowing elements 67 which have a blunt radially outer edge that does not cut the barrel wall but simply burrows into the barrel wall to create a permanent groove which permits air to pass around the plunger. Consequently, reuse of the syringe is made impossible, since the barrel will no longer hold the vacuum required for refilling of the syringe.
  • permanent deformation of the barrel wall by the deforming elements may be carried out either during the injection or the second aspiration stroke.
  • the barrel wall is preferably of a thickness of 0.01 to 0.2 mm and extrusion molded of a substantially rigid thermoplastic material to withstand the pressures created during aspiration and injection.
  • the barrel wall is preferably extrusion molded from polypropylene, but other thermoplastic materials may be used as well.
  • the syringe is preferably assembled by pushing the piston completely into the barrel and inserting the plunger into the barrel.
  • the plunger 80 is then forced against the piston 60 until the mushroom-shaped head 81 of the plunger snaps into the piston immediately behind the hook-shaped ends of the drag arms 62.
  • a circumferential crimp 100 is then provided in the barrel wall 12. The location of the crimp is selected such that it limits the maximum volume of liquid which can be aspirated. Changing the location of the crimp 100 allows syringes of the same construction and dimensions being used for a range of standard injection volumes (0.1 ml - 0.5 ml). The crimp also prevents disassembly of the syringe and tampering with the barrel wall deforming mechanism 90. Once fully assembled, the syringe is sterilized, packaged and shipped in the completely assembled but empty condition.
  • the syringe is first filled or aspirated by pulling back the plunger 80 which creates a vacuum in the syringe and leads to filling of the barrel with aspirated fluid in a manner well known in the art.
  • the plunger is forced into the barrel to advance the piston 60 and expell the fluid contained in the barrel.
  • the forward force imparted on the thumb plate 84 during the injection stroke forces the head 81 of the plunger deeper into the piston until the front surface 85 of the head engages the base
  • the connection between the front end 83 of the plunger 80 and the cutter arms is sufficient to prevent disconnection of the plunger from the piston during the third stroke.
  • the front end of the plunger is preferrably of sufficient strength to withstand the tension forces created during the third stroke so that the plunger front end does not break off during the cutting operation.
  • the plunger shaft 82 may be provided with an area of reduced cross-section (not illustrated) behind the mushroom shaped head 81 so that the head will break off when excessive rearward force is applied to the plunger 80.
  • the plunger shaft 82 is provided with a region of reduced cross-section 109 behind the rearmost guide plate 83 of the plunger 80.

Landscapes

  • Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

L'invention concerne une seringue jetable autodestructible comprenant un corps de pompe pour fluide injectable, un piston à mouvement alternatif enserré de manière étanche entre les parois du corps, une tige de piston dont la partie avant est positionnée normalement dans le tube et une partie arrière que l'usager peut manipuler. Un mécanisme de couplage assure la liaison entre le piston et la tige, et il est à l'origine d'un mouvement axial du piston dans le tube lorsqu'on actionne la tige; et il existe une structure déformante pour déformer définitivement la paroi du corps de pompe et rompre l'étanchéité entre le piston et cette paroi. La structure en question se présente sous la forme d'éléments coupants ou perçants maintenus par des bras élastiques sur le piston ou la tige. Ladite structure passe d'une position de repos (paroi du tube non déformée) à une position de contact avec la paroi (déformation permanente de celle-ci). En outre, la seringue comprend un mécanisme d'enclenchement qui pousse la structure déformante dans sa position enclenchée contre la paroi du corps de pompe lorsque le piston revient vers l'arrière uniquement après une injection complète ou partielle. Le mécanisme en question est monté soit sur le piston, soit sur la tige. Cette configuration donne une seringue autodestructible dans la mesure où la paroi du tube est définitivement déformée, non pas pendant l'injection, mais uniquement si l'on tente de remplir à nouveau la seringue après une injection complète ou partielle, si bien que l'opération d'autodestruction ne se produit plus de manière gênante pendant le cours de l'injection proprement dite.
PCT/CA1997/000066 1996-01-26 1997-01-24 Seringue jetable autodestructible Ceased WO1997026933A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU14349/97A AU1434997A (en) 1996-01-26 1997-01-24 Auto-destruct disposable syringe
US09/123,141 US6120479A (en) 1996-01-26 1998-07-27 Auto-destruct disposable syringe

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA 2168201 CA2168201A1 (fr) 1996-01-26 1996-01-26 Seringue jetable, auto-destructible
CA2,168,201 1996-01-26

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US09/123,141 Continuation US6120479A (en) 1996-01-26 1998-07-27 Auto-destruct disposable syringe

Publications (1)

Publication Number Publication Date
WO1997026933A1 true WO1997026933A1 (fr) 1997-07-31

Family

ID=4157445

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA1997/000066 Ceased WO1997026933A1 (fr) 1996-01-26 1997-01-24 Seringue jetable autodestructible

Country Status (3)

Country Link
AU (1) AU1434997A (fr)
CA (1) CA2168201A1 (fr)
WO (1) WO1997026933A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001021236A1 (fr) * 1999-09-22 2001-03-29 Campbell Douglas C V Seringue auto-destructible
WO2004024208A3 (fr) * 2002-09-11 2004-06-03 Tupal Ray Seringue autodestructrice
WO2010013088A1 (fr) * 2008-08-01 2010-02-04 Abu Dhabi National Industrial Projects Co. Dispositif d'auto-neutralisation pour seringues

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9333288B2 (en) 2011-09-30 2016-05-10 Becton Dickinson France, S.A.S. Attachable plunger rod and associated packaging

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2045499A1 (fr) * 1989-01-10 1990-07-11 Emeric Guy Fenet Seringues jetables non reutilisables et procedes de fabrication
DE4034673A1 (de) * 1990-09-27 1992-04-02 Bader & Partner Medizintechnik Spritze, insbesondere fuer den medizinischen gebrauch

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2045499A1 (fr) * 1989-01-10 1990-07-11 Emeric Guy Fenet Seringues jetables non reutilisables et procedes de fabrication
DE4034673A1 (de) * 1990-09-27 1992-04-02 Bader & Partner Medizintechnik Spritze, insbesondere fuer den medizinischen gebrauch

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001021236A1 (fr) * 1999-09-22 2001-03-29 Campbell Douglas C V Seringue auto-destructible
WO2004024208A3 (fr) * 2002-09-11 2004-06-03 Tupal Ray Seringue autodestructrice
WO2010013088A1 (fr) * 2008-08-01 2010-02-04 Abu Dhabi National Industrial Projects Co. Dispositif d'auto-neutralisation pour seringues
US8070721B2 (en) 2008-08-01 2011-12-06 Abu Dhabi National Industrial Projects Co. Auto-disable device for syringes

Also Published As

Publication number Publication date
CA2168201A1 (fr) 1997-07-27
AU1434997A (en) 1997-08-20

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