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WO2000056383A1 - Safety syringe for medical use - Google Patents

Safety syringe for medical use Download PDF

Info

Publication number
WO2000056383A1
WO2000056383A1 PCT/FR1999/000653 FR9900653W WO0056383A1 WO 2000056383 A1 WO2000056383 A1 WO 2000056383A1 FR 9900653 W FR9900653 W FR 9900653W WO 0056383 A1 WO0056383 A1 WO 0056383A1
Authority
WO
WIPO (PCT)
Prior art keywords
syringe
tubular part
rod
needle
rear end
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/FR1999/000653
Other languages
French (fr)
Inventor
Pierre Frezza
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.)
Laboratoire Aguettant SAS
Original Assignee
Laboratoire Aguettant SAS
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
Priority to FR9713873A priority Critical patent/FR2770405B1/en
Priority to EP98952818A priority patent/EP1079878A1/en
Priority to PCT/FR1998/002322 priority patent/WO1999022791A1/en
Application filed by Laboratoire Aguettant SAS filed Critical Laboratoire Aguettant SAS
Priority to AU28442/99A priority patent/AU2844299A/en
Priority to PCT/FR1999/000653 priority patent/WO2000056383A1/en
Publication of WO2000056383A1 publication Critical patent/WO2000056383A1/en
Anticipated expiration legal-status Critical
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
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3202—Devices for protection of the needle before use, e.g. caps
    • 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
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • 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
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321—Means for protection against accidental injuries by used needles
    • A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • A61M5/3257—Semi-automatic sleeve extension, i.e. in which triggering of the sleeve extension requires a deliberate action by the user, e.g. manual release of spring-biased extension means
    • 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
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M2005/3117—Means preventing contamination of the medicament compartment of a syringe
    • A61M2005/3118—Means preventing contamination of the medicament compartment of a syringe via the distal end of a syringe, i.e. syringe end for mounting a needle cannula
    • A61M2005/312—Means preventing contamination of the medicament compartment of a syringe via the distal end of a syringe, i.e. syringe end for mounting a needle cannula comprising sealing means, e.g. severable caps, to be removed prior to injection by, e.g. tearing or twisting
    • 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
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321—Means for protection against accidental injuries by used needles
    • A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • A61M5/326—Fully automatic sleeve extension, i.e. in which triggering of the sleeve does not require a deliberate action by the user
    • A61M2005/3265—Degree of extension of sleeve to its needle covering position is progressively established by the degree of piston insertion into the syringe barrel
    • 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
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31501—Means for blocking or restricting the movement of the rod or piston
    • 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
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with 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
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3287—Accessories for bringing the needle into the body; Automatic needle insertion

Definitions

  • the present invention relates to a safety syringe for medical use.
  • a syringe has a tubular body made of glass or synthetic material, intended to contain the liquid to be injected, one end of which is fitted with an injection needle, and inside which is mounted a piston seal actuable by a protruding rod. of the body on the opposite side to that equipped with the needle.
  • the needle is generally covered by a protective element, for example rubber.
  • the invention aims to provide a safety syringe, the cost price of which is only slightly increased compared to that of a traditional syringe, and which comprises a device needle protection which automatically covers the latter in the same movement as the injection movement, in order to protect the needle after injection, without requiring additional and voluntary manipulation on the part of the user.
  • the syringe body is provided, at its rear end, with at least one radial tab, a tubular piece of length at least equal to the length of the body of syringe increased by the length of the needle and having at least one axial slot extending from its rear end, each slot serving for the passage of a radial tab, this tubular piece being slidably mounted on the body, and the rod of the piston seal is equipped with axial locking means inside the tubular part, with release of this blocking at the end of the stroke of the piston seal, to allow the axial movement of the tubular part to continue, so that the front end of it comes to cover the needle.
  • the syringe body is provided, at its rear end, with a sleeve integral with the body and coaxial with the latter, to which it is connected directly or indirectly by at least one radial tab.
  • the syringe rod and the tubular part are integral with one another.
  • the operator exerts pressure on the tubular part.
  • the tubular part separates from the piston rod, and continues its movement of movement forwards, its front part then covering the needle, thus avoiding any risk of accidental injury using the latter.
  • the means for axially blocking the rod of the piston seal inside the tubular part are constituted by flexible tabs integral with the end of the rod, extending the latter, oriented from the inside towards the outside, and the free ends of which form a flange comprising a rib or a groove respectively cooperate with an annular groove or rib formed inside the tubular part, at a distance from the end posterior thereof at least equal to the length of the needle.
  • the tabs arranged at the posterior end of the piston rod come to engage in the body of the syringe, which brings these tabs together, and allows a separation between the latter and the tubular part which can thus continue moving it forward.
  • the means of axial locking of the piston seal rod inside the tubular part are constituted by a flange formed at the rear end of the piston seal rod and projecting radially towards the exterior, this flange being deformable thanks to the presence of at least one axial slot opening at the rear of the rod, this flange having a chamfered end edge, and being intended to be engaged in an annular groove formed at the inside the tubular part, at a distance from the rear end thereof at least equal to the length of the needle.
  • the rear end of the tubular part is closed by a cap ensuring its stiffening.
  • the stiffening thus obtained is important, in particular to avoid an undesired separation between the rear end of the rod and the tubular part.
  • the sleeve In order to facilitate handling of the syringe, the sleeve has, near its rear end, a complete or partial collar projecting outwards.
  • the sleeve forms an integral part of the body of the syringe and is obtained by molding of synthetic material, at the same time as the latter.
  • the sleeve, produced independently of the syringe body is integral with a sleeve of internal diameter adapted to the external diameter of the syringe body.
  • the tubular part comprises, at its front end, a ruptible extension, intended to cover the needle, before use of the syringe.
  • the ruptible extension Before using the syringe, the ruptible extension can be separated from the tubular part, for example by a twisting movement.
  • the tubular part is short enough so that before injection, the front end of the syringe body is visible, in order, for example, to allow the clarity of the liquid to be injected to be checked.
  • Figure 1 is an exploded perspective view of a first syringe
  • Figure 2 is a longitudinal sectional view on an enlarged scale before use;
  • Figure 3 is a cross-sectional view along line III-
  • Figures 4 and 5 are two views in longitudinal section respectively at the end of injection and after withdrawal of the needle from the injection site;
  • Figure 6 is a detail view in longitudinal section of a variant of the attachment of the piston rod to the tubular part;
  • Figures 7 and 8 are two views of a variant of the attachment of the rod on the tubular part, respectively in the hooked position and in the uncoupling position;
  • Figure 9 is a view of a variant of this syringe, in which the body of the syringe is made of synthetic material in one piece with the sleeve surrounding the body.
  • the syringe shown in FIGS. 1 to 5 comprises a syringe body 2 made of glass, one end of which is equipped with a separate injection needle 3, and protected, before use, by a protector 4 shown in phantom in FIG. 1
  • This syringe body 2 which is intended to contain a liquid 5 to be injected, is closed at its other end by a piston seal 6, actuated by a rod 7.
  • On the syringe body 2 is mounted, in the rear part of the latter, a sleeve 8 coaxial with the syringe body, and made integral with the latter by means of a sleeve 9 bearing against the syringe body 2 by means of longitudinal ribs 10.
  • the sleeve 8 is connected to the sleeve 9 by means of two radial lugs 12.
  • the socket 8 is equipped, at its rear end, with a partial flange 13, projecting outwards.
  • This syringe comprises a tubular piece 14 of length substantially equal to the length of the syringe body increased by the length of the needle 3, having, from its rear end, two longitudinal slots 15 each serving for the passage of a tab of connection 12 between the sleeve 8 and the sleeve 9.
  • the tubular part 14 is intended to be engaged on the syringe body 2 and to slide relative to the latter inside the sleeve 8.
  • the rod 7 of the piston 6 comprises, at its rear end, flexible lugs 16, extending the rod, oriented from the inside to the outside, and whose free ends form a collar 17 facing outwards.
  • This flange 17 is intended to be engaged in an annular groove 18 formed inside the tubular part 14, at a distance from the rear end of the latter at least equal to the length of the needle.
  • the rear end of the tubular part 14 can be closed off by a cap 19 having a flange 20 which covers the part tubular to prevent possible opening thereof which may result from the presence of the slots 15.
  • the front part of the tubular part 14 is provided with a breakable extension 22 at the level of a thinned zone 23.
  • This extension is intended to cover the needle before using the syringe.
  • the use of the syringe is as follows.
  • the operator removes the extension 23 from the tubular part as well as the needle guard 4. He can prick the patient quite normally by holding the syringe by the sleeve 8, between the middle finger and the index finger, and pressing with the thumb on the cap 20 of the tubular part 14.
  • the axial displacement of the tubular part 14 results in a corresponding drive of the rod 7 and of the piston 6, causing the injection of the liquid 5 contained in the syringe, towards the body of the patient.
  • the tabs 16 forming an elastic cone come into contact with the body of the syringe, the latter tightens the tabs 16, the flange 17 of which escapes from the groove 18 of the tubular part 14, as shown in Figure 4.
  • the front part of the tubular part has progressively covered the body of the syringe 2 until it comes, at the end of the injection, into contact with the patient's skin.
  • the tubular part 14 allows the needle to be completely covered by the front of the part 14, as shown in FIG. 5, as the needle is withdrawn from the skin.
  • the complete syringe is retracted into the tubular part 14, and can be discarded without risk of accidental puncture for the operator or for cleaning personnel.
  • Figure 6 shows an alternative embodiment of the attachment of the rear end of the rod 7 inside the tubular part 14.
  • the flexible tabs 16 form, at their free end, a flange 17 in the outer face of which a groove 25 is formed, in which is intended to engage an annular rib 26 formed inside the tubular part 14.
  • FIGS. 7 and 8 illustrate another embodiment of the invention, in which the same elements are designated by the same references as above.
  • the rod 7 is of constant section and has axial slots 27 opening into its rear edge.
  • the rod 7 also includes a peripheral flange 28, interrupted by the slots 27. This flange has a beveled outer edge 29.
  • the flange 28 is intended to come to engage in an annular groove 30 of the tubular part 14 to produce the assembly of the rod and the tubular part.
  • FIG. 9 represents a variant of this syringe, in which the body of the syringe 2 is produced made of synthetic material, and forms a single piece with the socket 8 to which it is connected by lugs 12. In this case, we do not find, as previously, the presence of an intermediate sleeve 9.
  • the invention brings a great improvement to the existing technique by providing a safety syringe equipped with an automatic needle protection device at the end of injection, this protection and ant performed without the operator having to execute a voluntary movement.
  • the cost price of this syringe is not significantly higher than that of a traditional syringe, insofar as the protective device consists only of an additional part, the tubular part, or two parts additional, insofar as the sleeve is not an integral part of the syringe body.
  • the invention is not limited to the sole embodiments of this syringe, described above by way of examples, on the contrary it embraces all variants.

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

Abstract

The invention concerns a syringe comprising a tubular part (14) enclosing the syringe body (2) and driving the syringe plunger (6) rod (7). During injection, the tubular part (14) slides forward on the body (2). After injection, the tubular part (14) is released from the rod (7) enabling its front portion to continue sliding to cover the needle (3).

Description

SERINGUE DE SECURITE A USAGE MEDICAL SAFETY SYRINGE FOR MEDICAL USE

La présente invention a pour objet une seringue de sécurité à usage médical.The present invention relates to a safety syringe for medical use.

Une seringue comporte un corps tubulaire en verre ou en matière synthétique, destiné à contenir le liquide à injecter, dont une extrémité est équipée d'une aiguille d'injection, et à l'intérieur duquel est monté un joint piston actionnable par une tige dépassant du corps du côté opposé à celui équipé de l'aiguille. Avant utilisation, l'aiguille est généralement recouverte par un élément protecteur, par exemple en caoutchouc. Après injection du liquide contenu dans le corps de la seringue, par actionnement du piston à l'aide de la tige, l'aiguille reste à nu, ce qui représente un risque de piqûre accidentelle avec les risques de transmission de certaines maladies, telles qu'hépatite ou sida.A syringe has a tubular body made of glass or synthetic material, intended to contain the liquid to be injected, one end of which is fitted with an injection needle, and inside which is mounted a piston seal actuable by a protruding rod. of the body on the opposite side to that equipped with the needle. Before use, the needle is generally covered by a protective element, for example rubber. After injection of the liquid contained in the body of the syringe, by actuation of the piston using the rod, the needle remains bare, which represents a risk of accidental injection with the risks of transmission of certain diseases, such as hepatitis or AIDS.

Le prix de revient d'une seringue traditionnelle étant très faible, l'invention vise à fournir une seringue de sécurité, dont le prix de revient n'est que faiblement augmenté par rapport à celui d'une seringue traditionnelle, et qui comporte un dispositif de protection d'aiguille qui vienne automatiquement recouvrir cette dernière dans le même mouvement que le mouvement d'injection, afin de protéger l'aiguille après l'injection, sans nécessiter une manipulation supplémentaire et volontaire de la part de l'utilisateur.The cost price of a traditional syringe being very low, the invention aims to provide a safety syringe, the cost price of which is only slightly increased compared to that of a traditional syringe, and which comprises a device needle protection which automatically covers the latter in the same movement as the injection movement, in order to protect the needle after injection, without requiring additional and voluntary manipulation on the part of the user.

A cet effet, dans la seringue qu'elle concerne, du type précité, le corps de seringue est muni, à son extrémité postérieure, d'au moins une patte radiale, une pièce tubulaire de longueur au moins égale à la longueur du corps de seringue augmentée de la longueur de l'aiguille et présentant au moins une fente axiale s'étendant à partir de son extrémité postérieure, chaque fente servant au passage d'une patte radiale, cette pièce tubulaire étant montée coulissante sur le corps, et la tige du joint piston est équipée de moyens de blocage axial à l'intérieur de la pièce tubulaire, avec libération de ce blocage en fin de course du joint piston, pour permettre une poursuite du mouvement axial de la pièce tubulaire, afin que l'extrémité avant de celle-ci vienne recouvrir l'aiguille.To this end, in the syringe it concerns, of the aforementioned type, the syringe body is provided, at its rear end, with at least one radial tab, a tubular piece of length at least equal to the length of the body of syringe increased by the length of the needle and having at least one axial slot extending from its rear end, each slot serving for the passage of a radial tab, this tubular piece being slidably mounted on the body, and the rod of the piston seal is equipped with axial locking means inside the tubular part, with release of this blocking at the end of the stroke of the piston seal, to allow the axial movement of the tubular part to continue, so that the front end of it comes to cover the needle.

Avantageusement, le corps de seringue est muni, à son extrémité postérieure, d'une douille solidaire du corps et coaxiale à celui- ci, auquel elle est reliée directement ou indirectement par au moins une patte radiale. Avant injection, la tige de la seringue et la pièce tubulaire sont solidaires l'une de l'autre. Pour réaliser l'injection, l'opérateur exerce une pression sur la pièce tubulaire. En fin d'injection, la pièce tubulaire se désolidarise de la tige de piston, et poursuit son mouvement de déplacement vers l'avant, sa partie antérieure venant alors recouvrir l'aiguille, évitant ainsi tous risques de blessure accidentelle à l'aide de cette dernière.Advantageously, the syringe body is provided, at its rear end, with a sleeve integral with the body and coaxial with the latter, to which it is connected directly or indirectly by at least one radial tab. Before injection, the syringe rod and the tubular part are integral with one another. To carry out the injection, the operator exerts pressure on the tubular part. At the end of injection, the tubular part separates from the piston rod, and continues its movement of movement forwards, its front part then covering the needle, thus avoiding any risk of accidental injury using the latter.

Suivant une première forme d'exécution de cette seringue, les moyens de blocage axial de la tige du joint piston à l'intérieur de la pièce tubulaire sont constitués par des pattes flexibles solidaires de l'extrémité de la tige, prolongeant celle-ci, orientées de l'intérieur vers l'extérieur, et dont les extrémités libres formant une collerette comportant une nervure ou une gorge coopèrent respectivement avec une gorge ou une nervure annulaire ménagée à l'intérieur de la pièce tubulaire, à une distance de l'extrémité postérieure de celle-ci au moins égale à la longueur de l'aiguille. En fin d'injection, les pattes disposées à l'extrémité postérieure de la tige du piston viennent s'engager dans le corps de la seringue, qui rapproche ces pattes, et permet une désolidarisation entre ces dernières et la pièce tubulaire qui peut ainsi poursuivre son déplacement vers l'avant. Suivant une autre forme d'exécution, les moyens de blocage axial de la tige du joint piston à l'intérieur de la pièce tubulaire sont constitués par une collerette ménagée à l'extrémité postérieure de la tige du joint piston et faisant saillie radialement vers l'extérieur, cette collerette étant déformable grâce à la présence d'au moins une fente axiale débouchant à l'arrière de la tige, cette collerette possédant un bord d'extrémité chanfreiné, et étant destinée à être engagée dans une gorge annulaire ménagée à l'intérieur de la pièce tubulaire, à une distance de l'extrémité postérieure de celle-ci au moins égale à la longueur de l'aiguille.According to a first embodiment of this syringe, the means for axially blocking the rod of the piston seal inside the tubular part are constituted by flexible tabs integral with the end of the rod, extending the latter, oriented from the inside towards the outside, and the free ends of which form a flange comprising a rib or a groove respectively cooperate with an annular groove or rib formed inside the tubular part, at a distance from the end posterior thereof at least equal to the length of the needle. At the end of injection, the tabs arranged at the posterior end of the piston rod come to engage in the body of the syringe, which brings these tabs together, and allows a separation between the latter and the tubular part which can thus continue moving it forward. According to another embodiment, the means of axial locking of the piston seal rod inside the tubular part are constituted by a flange formed at the rear end of the piston seal rod and projecting radially towards the exterior, this flange being deformable thanks to the presence of at least one axial slot opening at the rear of the rod, this flange having a chamfered end edge, and being intended to be engaged in an annular groove formed at the inside the tubular part, at a distance from the rear end thereof at least equal to the length of the needle.

Dans ce cas, en fin de course avant du piston, la tige est bloquée, et la poursuite d'un mouvement de pression exercé sur la pièce tubulaire, permet une désolidarisation de cette dernière vis-à-vis de l'extrémité postérieure de la tige, compte tenu de la flexibilité procurée par la structure de celle-ci.In this case, at the end of the front stroke of the piston, the rod is blocked, and the continuation of a pressure movement exerted on the tubular part, allows the latter to be detached from the posterior end of the rod, taking into account the flexibility provided by the structure thereof.

Avantageusement, l'extrémité postérieure de la pièce tubulaire est fermée par un capuchon assurant sa rigidification. La rigidification ainsi obtenue est importante, notamment pour éviter une désolidarisation non souhaitée entre l'extrémité postérieure de la tige et la pièce tubulaire.Advantageously, the rear end of the tubular part is closed by a cap ensuring its stiffening. The stiffening thus obtained is important, in particular to avoid an undesired separation between the rear end of the rod and the tubular part.

Afin de faciliter la manipulation de la seringue, la douille comporte, à proximité de son extrémité postérieure, une collerette complète ou partielle faisant saillie vers l'extérieur.In order to facilitate handling of the syringe, the sleeve has, near its rear end, a complete or partial collar projecting outwards.

Selon une possibilité, la douille fait partie intégrante du corps de la seringue et est obtenue par moulage de matière synthétique, en même temps que celui-ci. Selon une autre possibilité, la douille, réalisée indépendamment du corps de seringue, est solidaire d'un manchon de diamètre intérieur adapté au diamètre extérieur du corps de seringue.According to one possibility, the sleeve forms an integral part of the body of the syringe and is obtained by molding of synthetic material, at the same time as the latter. According to another possibility, the sleeve, produced independently of the syringe body, is integral with a sleeve of internal diameter adapted to the external diameter of the syringe body.

Conformément à une forme d'exécution de cette seringue, la pièce tubulaire comporte, à son extrémité avant, un prolongement ruptible, destiné à recouvrir l'aiguille, avant utilisation de la seringue.According to an embodiment of this syringe, the tubular part comprises, at its front end, a ruptible extension, intended to cover the needle, before use of the syringe.

Avant utilisation de la seringue, le prolongement ruptible peut être séparé de la pièce tubulaire, par exemple par un mouvement de torsion.Before using the syringe, the ruptible extension can be separated from the tubular part, for example by a twisting movement.

La pièce tubulaire est suffisamment courte pour qu'avant injection, l'extrémité avant du corps de la seringue soit visible, afin, par exemple, de permettre de vérifier la limpidité du liquide à injecter.The tubular part is short enough so that before injection, the front end of the syringe body is visible, in order, for example, to allow the clarity of the liquid to be injected to be checked.

De toute façon, l'invention sera bien comprise à l'aide de la description qui suit, en référence au dessin schématique annexé représentant, à titre d'exemples non limitatifs, deux formes d'exécution de cette seringue :In any case, the invention will be clearly understood with the aid of the description which follows, with reference to the appended schematic drawing showing, by way of nonlimiting examples, two embodiments of this syringe:

Figure 1 est une vue en perspective éclatée d'une première seringue ;Figure 1 is an exploded perspective view of a first syringe;

Figure 2 en est une vue en coupe longitudinale et à échelle agrandie avant utilisation ; Figure 3 en est une vue en coupe transversale selon la ligne III-Figure 2 is a longitudinal sectional view on an enlarged scale before use; Figure 3 is a cross-sectional view along line III-

III de figure 2 ;III of Figure 2;

Figures 4 et 5 en sont deux vues en coupe longitudinale respectivement en fin d'injection et après retrait de l'aiguille hors du site d'injection ; Figure 6 est une vue de détail en coupe longitudinale d'une variante de l'accrochage de la tige du piston sur la pièce tubulaire ; Figures 7 et 8 sont deux vues d'une variante de l'accrochage de la tige sur la pièce tubulaire, respectivement en position accrochée et en position de désaccouplement ;Figures 4 and 5 are two views in longitudinal section respectively at the end of injection and after withdrawal of the needle from the injection site; Figure 6 is a detail view in longitudinal section of a variant of the attachment of the piston rod to the tubular part; Figures 7 and 8 are two views of a variant of the attachment of the rod on the tubular part, respectively in the hooked position and in the uncoupling position;

Figure 9 est une vue d'une variante de cette seringue, dans laquelle le corps de la seringue est réalisé en matière synthétique en une seule pièce avec la douille entourant le corps.Figure 9 is a view of a variant of this syringe, in which the body of the syringe is made of synthetic material in one piece with the sleeve surrounding the body.

La seringue représentée aux figures 1 à 5 comprend un corps de seringue 2 en verre, dont une extrémité est équipée d'une aiguille d'injection 3 séparée, et protégée, avant utilisation, par un protecteur 4 représenté en trait mixte à la figure 1. Ce corps de seringue 2, qui est destiné à contenir un liquide 5 à injecter, est fermé à son autre extrémité par un joint piston 6, actionné par une tige 7. Sur le corps de seringue 2 est montée, dans la partie postérieure de celui-ci, une douille 8 coaxiale au corps de seringue, et rendue solidaire de celui-ci par l'intermédiaire d'un manchon 9 prenant appui contre le corps de seringue 2 par l'intermédiaire de nervures longitudinales 10. La douille 8 est reliée au manchon 9 par l'intermédiaire de deux pattes radiales 12. La douille 8 est équipée, à son extrémité postérieure, d'une collerette 13 partielle, faisant saillie vers l'extérieur. Cette seringue comprend une pièce tubulaire 14 de longueur sensiblement égale à la longueur du corps de seringue augmentée de la longueur de l'aiguille 3, présentant, à partir de son extrémité postérieure, deux fentes longitudinales 15 servant chacune au passage d'une patte de liaison 12 entre la douille 8 et le manchon 9. La pièce tubulaire 14 est destinée à être engagée sur le corps de seringue 2 et à coulisser relativement à celui-ci à l'intérieur de la douille 8.The syringe shown in FIGS. 1 to 5 comprises a syringe body 2 made of glass, one end of which is equipped with a separate injection needle 3, and protected, before use, by a protector 4 shown in phantom in FIG. 1 This syringe body 2, which is intended to contain a liquid 5 to be injected, is closed at its other end by a piston seal 6, actuated by a rod 7. On the syringe body 2 is mounted, in the rear part of the latter, a sleeve 8 coaxial with the syringe body, and made integral with the latter by means of a sleeve 9 bearing against the syringe body 2 by means of longitudinal ribs 10. The sleeve 8 is connected to the sleeve 9 by means of two radial lugs 12. The socket 8 is equipped, at its rear end, with a partial flange 13, projecting outwards. This syringe comprises a tubular piece 14 of length substantially equal to the length of the syringe body increased by the length of the needle 3, having, from its rear end, two longitudinal slots 15 each serving for the passage of a tab of connection 12 between the sleeve 8 and the sleeve 9. The tubular part 14 is intended to be engaged on the syringe body 2 and to slide relative to the latter inside the sleeve 8.

Dans la forme d'exécution représentée aux figures 1 à 5, la tige 7 du piston 6 comporte, à son extrémité postérieure, des pattes 16 flexibles, prolongeant la tige, orientées de l'intérieur vers l'extérieur, et dont les extrémités libres forment une collerette 17 tournée vers l'extérieur. Cette collerette 17 est destinée à être engagée dans une gorge 18 annulaire ménagée à l'intérieur de la pièce tubulaire 14, à une distance de l'extrémité postérieure de celle-ci au moins égale à la longueur de l'aiguille. L'extrémité postérieure de la pièce tubulaire 14 peut être obturée par un capuchon 19 comportant un rebord 20 venant coiffer la pièce tubulaire pour empêcher l'ouverture possible de celle-ci pouvant résulter de la présence des fentes 15.In the embodiment shown in Figures 1 to 5, the rod 7 of the piston 6 comprises, at its rear end, flexible lugs 16, extending the rod, oriented from the inside to the outside, and whose free ends form a collar 17 facing outwards. This flange 17 is intended to be engaged in an annular groove 18 formed inside the tubular part 14, at a distance from the rear end of the latter at least equal to the length of the needle. The rear end of the tubular part 14 can be closed off by a cap 19 having a flange 20 which covers the part tubular to prevent possible opening thereof which may result from the presence of the slots 15.

Dans la forme d'exécution représentée à la figure 2, la partie avant de la pièce tubulaire 14 est munie d'un prolongement 22 ruptible au niveau d'une zone amincie 23. Ce prolongement est destiné à recouvrir l'aiguille avant utilisation de la seringue. Partant d'une seringue, telle que représentée à la figure 2, l'utilisation de la seringue est la suivante.In the embodiment shown in FIG. 2, the front part of the tubular part 14 is provided with a breakable extension 22 at the level of a thinned zone 23. This extension is intended to cover the needle before using the syringe. Starting from a syringe, as shown in Figure 2, the use of the syringe is as follows.

L'opérateur retire le prolongement 23 de la pièce tubulaire ainsi que le protège-aiguille 4. Il peut piquer le patient tout à fait normalement en tenant la seringue par la douille 8, entre le majeur et l'index, et en appuyant avec le pouce sur le capuchon 20 de la pièce tubulaire 14. Le déplacement axial de la pièce tubulaire 14 se traduit par un entraînement correspondant de la tige 7 et du piston 6, provoquant l'injection du liquide 5 contenu dans la seringue, vers le corps du patient. Lorsque, en fin d'injection, les pattes 16 formant un cône élastique entrent en contact avec le corps de la seringue, ce dernier resserre les pattes 16, dont la collerette 17 échappe à la gorge 18 de la pièce tubulaire 14, comme montré à la figure 4.The operator removes the extension 23 from the tubular part as well as the needle guard 4. He can prick the patient quite normally by holding the syringe by the sleeve 8, between the middle finger and the index finger, and pressing with the thumb on the cap 20 of the tubular part 14. The axial displacement of the tubular part 14 results in a corresponding drive of the rod 7 and of the piston 6, causing the injection of the liquid 5 contained in the syringe, towards the body of the patient. When, at the end of injection, the tabs 16 forming an elastic cone come into contact with the body of the syringe, the latter tightens the tabs 16, the flange 17 of which escapes from the groove 18 of the tubular part 14, as shown in Figure 4.

Pendant toute la phase d'injection, la partie avant de la pièce tubulaire a progressivement recouvert le corps de la seringue 2 jusqu'à venir, en fin d'injection, en contact avec la peau du patient. Le fait de continuer à pousser sur la pièce tubulaire 14 permet à l'aiguille de se trouver complètement recouverte par l'avant de la pièce 14, comme montré à la figure 5, au fur et à mesure que l'aiguille est retirée de la peau. La seringue complète se trouve escamotée dans la pièce tubulaire 14, et peut être jetée sans risques de piqûre accidentelle pour l'opérateur ou pour le personnel de nettoyage.During the entire injection phase, the front part of the tubular part has progressively covered the body of the syringe 2 until it comes, at the end of the injection, into contact with the patient's skin. Continuing to push on the tubular part 14 allows the needle to be completely covered by the front of the part 14, as shown in FIG. 5, as the needle is withdrawn from the skin. The complete syringe is retracted into the tubular part 14, and can be discarded without risk of accidental puncture for the operator or for cleaning personnel.

La figure 6 représente une variante d'exécution de l'accrochage de l'extrémité postérieure de la tige 7 à l'intérieur de la pièce tubulaire 14. Dans ce cas, les pattes flexibles 16 forment, à leur extrémité libre, une collerette 17 dans la face extérieure de laquelle est ménagée une gorge 25, dans laquelle est destinée à venir s'engager une nervure annulaire 26 ménagée à l'intérieur de la pièce tubulaire 14.Figure 6 shows an alternative embodiment of the attachment of the rear end of the rod 7 inside the tubular part 14. In this case, the flexible tabs 16 form, at their free end, a flange 17 in the outer face of which a groove 25 is formed, in which is intended to engage an annular rib 26 formed inside the tubular part 14.

La désolidarisation de la tige 7 et de la pièce tubulaire 14 se fait dans les mêmes conditions que précédemment. Les figures 7 et 8 illustrent une autre forme d'exécution de l'invention, dans laquelle les mêmes éléments sont désignés par les mêmes références que précédemment. Dans ce cas, la tige 7 est de section constante et comporte des fentes axiales 27 débouchant dans son bord postérieur. La tige 7 comporte également une collerette périphérique 28, interrompue par les fentes 27. Cette collerette comporte un bord extérieur 29 biseauté. La collerette 28 est destinée à venir s'engager dans une gorge annulaire 30 de la pièce tubulaire 14 pour réaliser l'assemblage de la tige et de la pièce tubulaire. Lorsque, en fin d'injection, la tige 7 est bloquée axialement, la partie postérieure de la tige 7 peut se resserrer grâce à la présence des fentes 27, les surfaces chanfreinées 29 permettant ce resserrement et, par suite, la désolidarisation axiale entre la tige 7 et la pièce tubulaire 14, dont la translation peut être poursuivie pour réaliser le recouvrement de l'aiguille, comme montré à la figure 8. La figure 9 représente une variante de cette seringue, dans laquelle le corps de la seringue 2 est réalisé en matière synthétique, et forme une pièce unique avec la douille 8 à laquelle elle est reliée par des pattes 12. Dans ce cas, on ne trouve pas, comme précédemment, la présence d'un manchon intermédiaire 9. Comme il ressort de ce qui précède, l'invention apporte une grande amélioration à la technique existante en fournissant une seringue de sécurité équipée d'un dispositif automatique de protection de l'aiguille en fin d'injection, cette protection étant réalisée sans que l'opérateur n'ait à exécuter un mouvement volontaire. En outre, le prix de revient de cette seringue n'est pas sensiblement plus élevé que celui d'une seringue traditionnelle, dans la mesure où le dispositif de protection n'est constitués que par une pièce supplémentaire, la pièce tubulaire, ou deux pièces supplémentaires, dans la mesure où la douille ne fait pas partie intégrante du corps de seringue. Comme il va de soi, l'invention ne se limite pas aux seules formes d'exécution de cette seringue, décrites ci-dessus à titre d'exemples, elle en embrasse au contraire toutes les variantes. The separation of the rod 7 and the tubular part 14 is done under the same conditions as above. Figures 7 and 8 illustrate another embodiment of the invention, in which the same elements are designated by the same references as above. In this case, the rod 7 is of constant section and has axial slots 27 opening into its rear edge. The rod 7 also includes a peripheral flange 28, interrupted by the slots 27. This flange has a beveled outer edge 29. The flange 28 is intended to come to engage in an annular groove 30 of the tubular part 14 to produce the assembly of the rod and the tubular part. When, at the end of injection, the rod 7 is axially blocked, the rear part of the rod 7 can tighten thanks to the presence of the slots 27, the chamfered surfaces 29 allowing this tightening and, consequently, the axial separation between the rod 7 and the tubular part 14, the translation of which can be continued in order to cover the needle, as shown in FIG. 8. FIG. 9 represents a variant of this syringe, in which the body of the syringe 2 is produced made of synthetic material, and forms a single piece with the socket 8 to which it is connected by lugs 12. In this case, we do not find, as previously, the presence of an intermediate sleeve 9. As is apparent from what precedes, the invention brings a great improvement to the existing technique by providing a safety syringe equipped with an automatic needle protection device at the end of injection, this protection and ant performed without the operator having to execute a voluntary movement. In addition, the cost price of this syringe is not significantly higher than that of a traditional syringe, insofar as the protective device consists only of an additional part, the tubular part, or two parts additional, insofar as the sleeve is not an integral part of the syringe body. As it goes without saying, the invention is not limited to the sole embodiments of this syringe, described above by way of examples, on the contrary it embraces all variants.

Claims

REVENDICATIONS 1. Seringue de sécurité à usage médical, du type comportant un corps de seringue tubulaire, destiné à contenir le liquide à injecter, dont une extrémité est équipée d'une aiguille d'injection, et à l'intérieur duquel est monté un joint piston actionnable par une tige dépassant du corps du côté opposé à celui équipé de l'aiguille, caractérisée en ce que :1. Safety syringe for medical use, of the type comprising a tubular syringe body, intended to contain the liquid to be injected, one end of which is equipped with an injection needle, and inside which is mounted a piston seal actuated by a rod protruding from the body on the side opposite to that equipped with the needle, characterized in that: - le corps de seringue (2) est muni, à son extrémité postérieure, d'au moins une patte radiale (12),the syringe body (2) is provided, at its rear end, with at least one radial tab (12), - une pièce tubulaire (14) de longueur au moins égale à la longueur du corps de seringue (2) augmentée de la longueur de l'aiguille- a tubular piece (14) of length at least equal to the length of the syringe body (2) increased by the length of the needle (3) et présentant au moins une fente axiale ( 18) s'étendant à partir de son extrémité postérieure, chaque fente ( 18) servant au passage d'une patte radiale (12), cette pièce tubulaire (14) étant montée coulissante sur le corps (2), et - la tige (7) du joint piston (6) est équipée de moyens (16, 17) de blocage axial à l'intérieur de la pièce tubulaire (14), avec libération de ce blocage en fin de course du joint piston (6), pour permettre une poursuite du mouvement axial de la pièce tubulaire, afin que l'extrémité avant de celle-ci vienne recouvrir l'aiguille. (3) and having at least one axial slot (18) extending from its rear end, each slot (18) serving for the passage of a radial tab (12), this tubular part (14) being slidably mounted on the body (2), and - the rod (7) of the piston seal (6) is equipped with means (16, 17) of axial locking inside the tubular part (14), with release of this blocking at the end stroke of the piston seal (6), to allow further axial movement of the tubular part, so that the front end of the latter comes to cover the needle. 2. Seringue selon la revendication 1 , caractérisée en ce que le corps de seringue (2) est muni, à son extrémité postérieure d'une douille (8) solidaire du corps et coaxiale à celui-ci, auquel elle est reliée directement ou indirectement par au moins une patte radiale (12).2. Syringe according to claim 1, characterized in that the syringe body (2) is provided, at its rear end with a sleeve (8) integral with the body and coaxial with it, to which it is connected directly or indirectly by at least one radial tab (12). 3. Seringue selon l'une des revendications 1 et 2, caractérisée en ce que les moyens de blocage axial de la tige (7) du joint piston (6) à l'intérieur de la pièce tubulaire sont constitués par des pattes flexibles (16) solidaires de l'extrémité de la tige, prolongeant celle-ci, orientées de l'intérieur vers l'extérieur, et dont les extrémités libres formant une collerette (17) comportant une nervure ou une gorge (25) coopèrent respectivement avec une gorge (18) ou une nervure annulaire (26) ménagée à l'intérieur de la pièce tubulaire ( 14), à une distance de l'extrémité postérieure de celle-ci au moins égale à la longueur de l'aiguille (3).3. Syringe according to one of claims 1 and 2, characterized in that the means of axial locking of the rod (7) of the piston seal (6) inside the tubular part are constituted by flexible tabs (16 ) integral with the end of the rod, extending the latter, oriented from the inside towards the outside, and whose free ends forming a collar (17) comprising a rib or a groove (25) cooperate respectively with a groove (18) or an annular rib (26) formed inside the tubular part (14), at a distance from the posterior end of the latter at least equal to the length of the needle (3). 4. Seringue selon l'une des revendications 1 et 2, caractérisée en ce que les moyens de blocage axial de la tige (7) du joint piston (6) à l'intérieur de la pièce tubulaire (14) sont constitués par une collerette (28) ménagée à l'extrémité postérieure de la tige (7) du joint piston et faisant saillie radialement vers l'extérieur, cette collerette étant déformable grâce à la présence d'au moins une fente axiale (27) débouchant à l'arrière de la tige, cette collerette (28) possédant un bord d'extrémité (29) chanfreiné, et étant destinée à être engagée dans une gorge annulaire (30) ménagée à l'intérieur de la pièce tubulaire (14) à une distance de l'extrémité postérieure de celle-ci au moins égale à la longueur de l'aiguille (3).4. Syringe according to one of claims 1 and 2, characterized in that the means of axial locking of the rod (7) of the piston seal (6) inside the tubular part (14) are constituted by a flange (28) formed at the rear end of the rod (7) of the piston seal and projecting radially outwards, this flange being deformable thanks to the presence of at least one axial slot (27) opening at the rear of the rod , this flange (28) having a chamfered end edge (29), and being intended to be engaged in an annular groove (30) formed inside the tubular part (14) at a distance from the rear end of the latter at least equal to the length of the needle (3). 5. Seringue selon l'une quelconque des revendications 1 à 4, caractérisée en ce que l'extrémité postérieure de la pièce tubulaire (14) est fermée par un capuchon (19) assurant sa rigidification.5. Syringe according to any one of claims 1 to 4, characterized in that the rear end of the tubular part (14) is closed by a cap (19) ensuring its stiffening. 6. Seringue selon l'une quelconque des revendications 2 à 5, caractérisée en ce que la douille (8) comporte, à proximité de son extrémité postérieure, une collerette (13) complète ou partielle faisant saillie vers l'extérieur. 6. Syringe according to any one of claims 2 to 5, characterized in that the sleeve (8) comprises, near its rear end, a flange (13) complete or partial projecting outwards. 7. Seringue selon l'une quelconque des revendications 2 à 5, caractérisée en ce que la douille (8) fait partie intégrante du corps (2) de la seringue et est obtenu par moulage de matière synthétique, en même temps que celui-ci.7. Syringe according to any one of claims 2 to 5, characterized in that the sleeve (8) is an integral part of the body (2) of the syringe and is obtained by molding of synthetic material, at the same time as the latter . 8. Seringue selon l'une quelconque des revendications 2 à 5, caractérisée en ce que la douille (8), réalisée indépendamment du corps (2) de seringue est solidaire d'un manchon (9) de diamètre intérieur adapté au diamètre extérieur du corps de seringue.8. Syringe according to any one of claims 2 to 5, characterized in that the sleeve (8), produced independently of the body (2) of the syringe is integral with a sleeve (9) of internal diameter adapted to the external diameter of the syringe body. 9. Seringue selon l'une quelconque des revendications 1 à 8, caractérisée en ce que la pièce tubulaire (14) comporte, à son extrémité avant, un prolongement ruptible (22), destiné à recouvrir l'aiguille (13), avant utilisation de la seringue. 9. Syringe according to any one of claims 1 to 8, characterized in that the tubular part (14) comprises, at its front end, a ruptible extension (22), intended to cover the needle (13), before use syringe.
PCT/FR1999/000653 1997-10-30 1999-03-19 Safety syringe for medical use Ceased WO2000056383A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR9713873A FR2770405B1 (en) 1997-10-30 1997-10-30 SAFETY SYRINGE FOR MEDICAL USE
EP98952818A EP1079878A1 (en) 1997-10-30 1998-10-29 Safety syringe for medical use
PCT/FR1998/002322 WO1999022791A1 (en) 1997-10-30 1998-10-29 Safety syringe for medical use
AU28442/99A AU2844299A (en) 1997-10-30 1999-03-19 Safety syringe for medical use
PCT/FR1999/000653 WO2000056383A1 (en) 1997-10-30 1999-03-19 Safety syringe for medical use

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9713873A FR2770405B1 (en) 1997-10-30 1997-10-30 SAFETY SYRINGE FOR MEDICAL USE
PCT/FR1999/000653 WO2000056383A1 (en) 1997-10-30 1999-03-19 Safety syringe for medical use

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WO2000056383A1 true WO2000056383A1 (en) 2000-09-28

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PCT/FR1999/000653 Ceased WO2000056383A1 (en) 1997-10-30 1999-03-19 Safety syringe for medical use

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US7445612B2 (en) 1996-12-31 2008-11-04 Société de Conseils de Recherches et d'Applications Scientifiques, S.A.S. Safety injection device for a liquid or semi-solid composition
US6893423B2 (en) 2000-11-03 2005-05-17 Sedat Injection syringe with mobile needle guard
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FR2821562A1 (en) * 2001-03-05 2002-09-06 Becton Dickinson France Medical syringe has safety sleeve with lengthwise slots and plunger rod that can be broken off to prevent re-use
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EP1356839A1 (en) * 2002-04-25 2003-10-29 Compagnie Plastic Omnium Liquid injection syringe assembly and sheeth for this assembly
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CN110559522A (en) * 2014-08-21 2019-12-13 欧文蒙福德有限公司 Safety syringe
CN110559523B (en) * 2014-08-21 2022-01-11 欧文蒙福德有限公司 Safety syringe
CN110559522B (en) * 2014-08-21 2022-06-24 欧文蒙福德有限公司 Safety syringe

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WO1999022791A1 (en) 1999-05-14
AU2844299A (en) 2000-10-09
EP1079878A1 (en) 2001-03-07
FR2770405B1 (en) 1999-12-10
FR2770405A1 (en) 1999-05-07

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