EP0585266A1 - Dispositif d'injection a usage unique - Google Patents

Dispositif d'injection a usage unique

Info

Publication number
EP0585266A1
EP0585266A1 EP19920909437 EP92909437A EP0585266A1 EP 0585266 A1 EP0585266 A1 EP 0585266A1 EP 19920909437 EP19920909437 EP 19920909437 EP 92909437 A EP92909437 A EP 92909437A EP 0585266 A1 EP0585266 A1 EP 0585266A1
Authority
EP
European Patent Office
Prior art keywords
piston
driver
piston rod
injection device
injection
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
EP19920909437
Other languages
German (de)
English (en)
Inventor
Ewald Pickhard
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.)
Pharmaplan GmbH
Original Assignee
MED Plastic AG
Pharmaplan GmbH
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 MED Plastic AG, Pharmaplan GmbH filed Critical MED Plastic AG
Publication of EP0585266A1 publication Critical patent/EP0585266A1/fr
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
    • A61M5/5066—Means for preventing re-use by disconnection of piston and piston-rod
    • 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
    • A61M5/502—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe for blocking the piston
    • A61M2005/5026—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe for blocking the piston allowing single filling of syringe

Definitions

  • an embodiment according to claim 10 is also advantageous, so that when there is a relative movement between the piston and the piston rod and the opening organ penetrates into the opening as a result, the width of the opening is continuously increased and thereby a bumpless release of the coupling device is achieved, so that injuries to veins or the like are prevented and the values prescribed in the standards for these injection devices for the force required to actuate the piston both when administering and when drawing a medicament into the injection device be enough.
  • the opening member 30 arranged in the through hole 17 has a maximum diameter 36 that is smaller than a diameter 37 of the through hole 17.
  • a surface 38 of the opening member 30 is in the direction of the end face 16 or the annular projection 18 of the piston 8 Conically tapered and has a mushroom-like driver 40 on one end 39 facing the injection needle 4.
  • a maximum outer diameter 41 of a cylindrical circumferential surface of the driver is smaller than the diameter 36 of the opening member 30, but larger than a diameter 42 of the opening 19 of the annular projection 18. This creates an annular overlap with a width 43 between a vertical one to the central axis 14 arranged sealing surface 44 of the driver 40 and the projection 18 forms ge, the annular overlap with the width 43 forming a sealing device 45 of a tamper-evident device 46.
  • the circumferential sealing device 45 In order to favor this deformation of the projection 18 or the sealing device 45, it is possible to provide the circumferential sealing device 45 with radial weakening areas, so that when the opening member 30 deforms, the sealing device 45 tears in the radial direction comes and thus a tight connection between the piston 8 and piston rod 6 can no longer be produced. However, it is also readily possible to assign a circumferential line of weakness in the sealing device 45, for example in the area adjacent to the through-bore 17, so that when the opening member 30 expands it, the approximately circular sealing device 45 or the projection 18 is separated from the piston 8 .
  • the elevations 55 must not be made too high, so that the elasticity of the piston seal or the piston rings arranged on the piston 8 is sufficient to be able to insert the piston 8 into the syringe barrel 2 from the opening 12.
  • FIGS. 1 to 3 shows an injection device 1 which essentially corresponds to the injection devices 1 shown in FIGS. 1 to 3. Therefore, the same reference numerals are used for the same parts.
  • the difference from the injection device 1 described in FIGS. 1 to 3 is that the syringe barrel 2 is designed differently in order to allow aspiration when using the injection device 1, but the structure, the construction and the mode of operation of the coupling device 7 are identical to the embodiment described in FIGS. 1 to 3 and 5 to 7.
  • the syringe cylinder 2 has a coupling device 56 on the tubular outlet 5, for example a Luer Cone connection, for the injection needle 4.
  • a coupling device 56 on the tubular outlet 5, for example a Luer Cone connection, for the injection needle 4.
  • an inner diameter 57 of the syringe barrel 2 is larger than an inner diameter 58 adjoining in the direction of the injection needle 4, a transition region 59 between the inner diameter 57 and the inner diameter 58 being conical.
  • the cylinder chamber 11 is filled with a solution 60 which is shown schematically with dashed lines, the annular projection 35 forming the stop 34 pointing towards the stroke of the piston rod 6 in the direction the elevations 55 delimiting the opening 12.
  • FIG. 1 A further position of the injection device 1 according to the invention is shown in FIG.
  • this embodiment of the injection device 1 differs from the previously described embodiment variant by a special configuration of the connection of the piston rod 6 with the extension 29 and the opening member 30.

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

Cette invention décrit un dispositif d'injection (1) à usage unique muni d'un corps de pompe destiné à contenir la substance à injecter, d'un piston (8) placé à l'intérieur du corps de pompe (2) et d'une tige de piston (6) solidaire du piston (8) par le biais d'un système d'accouplement (7). L'extrémité du corps de pompe (2) opposée à la tige du piston (6) est munie d'une aiguille d'injection (4). Entre le piston (8) et la tige du piston (6), il existe un dispositif garantissant la fermeture d'origine (9) comportant un organe d'ouverture (30) fixé sur le piston (8) et/ou sur la tige du piston (6) ou bien entre eux. Entre la tige du piston (6) et le piston (8), le système d'accouplement (7) présente un entraîneur (40) formant une pièce d'accouplement disposée de sorte à suivre les mouvements de la tige de piston (6), sur la partie du piston (8) faisant face à l'aiguille d'injection (4), et une partie d'accouplement (48) servant de dispositif d'étanchéité (45), ce dernier (45) adhérant à une surface d'étanchéité (44) disposée sur la partie de l'entraîneur (40) placée en face dudit dispositif d'étanchéité, en position d'extraction.
EP19920909437 1991-04-17 1992-04-16 Dispositif d'injection a usage unique Ceased EP0585266A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT811/91 1991-04-17
AT81191 1991-04-17

Publications (1)

Publication Number Publication Date
EP0585266A1 true EP0585266A1 (fr) 1994-03-09

Family

ID=3500270

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920909437 Ceased EP0585266A1 (fr) 1991-04-17 1992-04-16 Dispositif d'injection a usage unique

Country Status (3)

Country Link
EP (1) EP0585266A1 (fr)
AU (1) AU1657092A (fr)
WO (1) WO1992018185A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6099502A (en) * 1995-04-20 2000-08-08 Acist Medical Systems, Inc. Dual port syringe
FR2750052B1 (fr) * 1996-06-21 1999-04-02 Lahlou Khalid Pierre Seringue non reutilisable
DE20312677U1 (de) * 2003-08-16 2004-12-23 Schwarzbich, Jörg Spritze mit einer Wiederverwendungssperre
DE202004002895U1 (de) * 2004-02-25 2005-06-30 Schwarzbich, Jörg Einwegspritze

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU1916088A (en) * 1987-07-21 1989-01-27 Dowty Seals Limited Non-reusable syringe
US4923443A (en) * 1988-10-04 1990-05-08 Greenwood Eugene C Single use syringe
WO1990008565A1 (fr) * 1989-02-01 1990-08-09 R & R Inventions Limited Seringue a usage unique
DE3907096A1 (de) * 1989-02-27 1990-08-30 Holzer Walter Verfahren und ausfuehrung einer injektionsspritze zum einmaligen gebrauch
FR2646086B1 (fr) * 1989-04-19 1991-08-23 Pons Francis Dispositif de securite empechant toute nouvelle utilisation d'une seringue
EP0415867A1 (fr) * 1989-07-03 1991-03-06 Fabersanitas S.A. Dispositif d'injection à usage unique consistant en une aiguille et une seringue

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9218185A1 *

Also Published As

Publication number Publication date
AU1657092A (en) 1992-11-17
WO1992018185A1 (fr) 1992-10-29

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Legal Events

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Owner name: PHARMAPLAN GMBH

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