FR2712497A1 - Single-use syringe - Google Patents

Single-use syringe Download PDF

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Publication number
FR2712497A1
FR2712497A1 FR9312723A FR9312723A FR2712497A1 FR 2712497 A1 FR2712497 A1 FR 2712497A1 FR 9312723 A FR9312723 A FR 9312723A FR 9312723 A FR9312723 A FR 9312723A FR 2712497 A1 FR2712497 A1 FR 2712497A1
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France
Prior art keywords
piston
syringe
cylinder
seal
branches
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Granted
Application number
FR9312723A
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French (fr)
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FR2712497B1 (en
Inventor
Ben Jilani-Elm Ba Salah-Eddine
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BEN JILANI ELM BARKI SALAH EDDIN
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BEN JILANI ELM BARKI SALAH EDDIN
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Priority claimed from FR9312255A external-priority patent/FR2712496A1/en
Application filed by BEN JILANI ELM BARKI SALAH EDDIN filed Critical BEN JILANI ELM BARKI SALAH EDDIN
Priority to FR9312723A priority Critical patent/FR2712497B1/en
Publication of FR2712497A1 publication Critical patent/FR2712497A1/en
Application granted granted Critical
Publication of FR2712497B1 publication Critical patent/FR2712497B1/en
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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
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/3129—Syringe barrels
    • 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

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  • 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

The syringe comprises a thick-wall barrel with a conical tip for the needle and a sliding inner plunger (14) with a pointed tip (18) and a sealing piston. The piston is in the shape of an open chamber with holes (9) in its side walls and an end wall (12) which can be perforated by the pointed tip (18). The plunger is equipped with at least one crosspiece (16,17) in the form of a bar which applies a pressure to the piston on the operating stroke, and the barrel has an inner stop ring to limit the forward movement of the piston and ensure that it is perforated at the end of its stroke. Any attempt to re-fill the syringe causes it to draw in fluid, and the crosspieces break if a pressure is applied to them.

Description

SERINGUE A USAGE UNIQUE
La présente invention concerne une seringue hypoder mique à usage unique , non-réutilisable . SINGLE USE SYRINGE
The present invention relates to a single-use, non-reusable hypodermic syringe.

Les problèmes antérieurs posés par l'utilisation de seringues dites 2 pièces ou 3 pièces et se résumant en un corps de cylindre, un piston coulissant et un joint assurant l'étanchéité, portent tant sur la manière d'utiliser la seringue que sur son but
De la seringue en verre, nous sommes passés à la seringue à usage unique , en matériaux de synthèse et la qualifiant, alors, de seringue à usage unique ; le principe restant le même : celui d'assurer l'étanchéité pour un cotit le plus économique et d'une utilisation la plus simple
A moins d'une décision volontaire de l'utilisateur il n'existe vraiment pas de seringue à usage unique
Les seringues existantes qui revendiquent cette effica cité sont soit très compliquées et d'une utilisation peu facile, soit, de surcroit, non économiques à la fabrication
La notion de confort en matière de santé et la néces sité de faire face à certaines maladies graves imposent à chacun de s'assurer par l'utilisation d'une seringue non-réutilisable . The previous problems posed by the use of so-called 2-piece or 3-piece syringes and summed up in a cylinder body, a sliding piston and a seal ensuring sealing, relate both to the manner of using the syringe and to its purpose
From the glass syringe, we switched to the disposable syringe, made of synthetic materials and then qualifying it as a disposable syringe; the principle remains the same: that of sealing for a more economical cotit and the simplest use
Unless there is a voluntary decision by the user, there is really no single-use syringe
The existing syringes which claim this effectiveness are either very complicated and not very easy to use, or, moreover, not economical to manufacture
The concept of comfort in terms of health and the need to cope with certain serious illnesses require everyone to insure themselves by using a non-reusable syringe.

A cet effet, l'invention porte sur la non-réutilisa tion de la seringue dite jetable
La faisabilité technique et industrielle de cette invention est d'un cotit comparable à celui des modèles standard . Elle est réalisable aisément et ne requiert pas d'équipement ni d'investissement supplémentaires
L'invention réside dans la forme particulière du cy lindre, d'un piston coiffé d'un dard perforant supporté par un plateau fragilisé, formé de branches, et d'un joint spécifique à l'invention comportant au moins un orifice latéral; la paroi frontale du joint est amincie facilitant sa perforation ; la forme en branches for mant les plateaux permet des prises d'air
L'ensemble crée un effet chambre par aspiration et refoulement d'air
Ainsi, sous l'effet de la pression du piston, en phase d'injection, et des moyens de frottement et d'arret par cliquetage situés sur le cylindre, le dard perfore la mince épaisseur du joint, au niveau d'une coupelle pré-perforée, créant un orifice par lequel passe l'air, diminuant ainsi, la pression existante dans la lumière du cylindre . Par cet effet, et sans atteinte de l'efficacité de l'étanchéité du joint, l'air passe entre les branches d'un plateau et par les orifi ces du joint, puis, ressort de la chambre de celui-çi vers la lumière du cylindre; d'où l'effet chambre
Le réequilibrage des pressions s'installe la seringue est devenue non-réutilisable; à chaque tenta tive de réutilisation du piston, celui-çi n' aspire plus de liquide mais de l'air
Une variante de l'invention, afin de s'assurer d'avan tage de la non-réutilisation de la seringue, réside dans la cassure des branches du piston portant le dard; les dites branches peuvent être coniques ou horizontales
Ainsi, lors de l'effort de poussée, en phase d'injec tion, et, après la perforation du joint, le dard se loge dans le cbne du cylindre provoquant la cassure des bran ches fragilisées du plateau, aidé en cela par des épais sissements de la paroi interne du cylindre . Le piston n'étant plus maintenu au joint par les branches du pla teau, qui se sont cassées, devient libre et, lors d'une tentative de réutilisation, revient seul, laissant le joint bloqué au fond du cylindre
La seringue est, alors, auto-détruite . To this end, the invention relates to the non-re-use of the so-called disposable syringe
The technical and industrial feasibility of this invention is comparable to that of standard models. It is easily achievable and does not require additional equipment or investment
The invention resides in the particular shape of the cylinder, of a piston capped with a perforating dart supported by a weakened plate, formed of branches, and of a seal specific to the invention comprising at least one lateral orifice; the front wall of the joint is thinned facilitating its perforation; the shape in branches forming the trays allows air intakes
The whole creates a room effect by air suction and discharge
Thus, under the effect of the pressure of the piston, during the injection phase, and of the friction and snap-stop means located on the cylinder, the dart perforates the thin thickness of the seal, at the level of a pre-cup. -perforated, creating an orifice through which the air passes, thereby reducing the pressure existing in the cylinder lumen. By this effect, and without affecting the effectiveness of the seal of the joint, the air passes between the branches of a tray and through the orifices of the joint, then leaves the chamber thereof towards the light. of the cylinder; hence the bedroom effect
The pressure rebalancing settles the syringe has become non-reusable; at each attempt to reuse the piston, it no longer sucks liquid but air
A variant of the invention, in order to ensure the advantage of the non-reuse of the syringe, lies in the breakage of the branches of the piston carrying the dart; the said branches can be conical or horizontal
Thus, during the pushing force, in the injection phase, and, after the perforation of the joint, the dart is lodged in the cylinder cone causing the breakage of the weakened branches of the plate, aided by thick the internal wall of the cylinder. The piston is no longer held at the joint by the branches of the plate, which have broken, becomes free and, during an attempt to reuse, returns alone, leaving the joint blocked at the bottom of the cylinder
The syringe is, then, self-destructing.

La réalisation technique et industrielle de cette in vention est simple du fait qu'il n'y a qu'un seul joint quasi-standard et que lors de la fabrication ou de l'as semblage aucune précaution particulière, hormis les réglages des machines habituelles, n'est nécessaire
Par conséquent, il s'agit d'une réalisation très écono mique, conforme aux exigences et à la sécurité requise par le monde médical
L'invention sera mieux comprise ainsi que ses avanta ges au moyen de la description qui va suivre en référen ce aux dessins dans lesquels
- la figure 1 est une vue du corps du cylin dre et des moyens de frottement et d'arret du joint.The technical and industrial realization of this in vention is simple because there is only one quasi-standard joint and that during manufacture or assembly no special precautions, apart from the adjustments of the usual machines , is only necessary
Consequently, it is a very economical achievement, complying with the requirements and safety required by the medical world.
The invention will be better understood as well as its advantages by means of the description which will follow with reference to the drawings in which
- Figure 1 is a view of the cylinder body and friction means and stop the seal.

- la figure 2 est une vue du piston muni du dard perforant , avec le plateau en forme de branches fragilisées; le piston porte le joint
- la figure 3 est une vue du joint d'étan chéité , de ses orifices et de la coupelle pré-perfora ble
- la figure 4 représente le plateau en for me de branches fragilisées
- la figure 5 est une vue de face du plateau poussoir du joint muni de branches laissant passer l'air
- la figure 6 schématise, en position haute la perforation du joint par le dard qui se loge dans le cône du cylindre
- la figure 7 montre la représentation, en position basse, l'effet chambre et les mouvements de l'air; le piston, sur cette variante, encore intact, est en position retour
La figure 1 représente le cylindre (1), corps de la seringue, avec un cône (2) où vient se loger le dard, et des parois épaissies (4,5) jouant un rôle d'étranglement situées vers l'intérieur du cylindre, créant la compres sion du joint élastique, pour faciliter sa perforation; l'épaisseur de la paroi vient en diminuant, partant des 2/3 du cylindre (5) jusqu'au fond du cône (4) , corres pondant à des moyens de frottement, ainsi qu'un moyen d'arrêt sous la forme d'une couronne dite de cliquetage (6) située à proximité du cône (4) du cylindre . Cette couronne crée une butée suffisante pour accentuer la perforation du joint tout en préservant une application douce de l'effort, en phase d'injection , dans la lumié re du cône (3)
Le cylindre (1) reçoit le piston (15) monté d'un joint (ï) élastique,qui coulisse axialement le long du cylindre
Le piston , comme l'illustre la figure 2, comporte fixés sur sa tige (15) des évidemments longitudinaux (14) en forme d'ailettes permettant des prises d'air vers la chambre (8) du joint au travers des branches ou trous formant le plateau (16), d'une part, et servant au guidage et à la préhension, d'autre part . Les extrémi tés des ailettes (14) viennent en diminuant pour recoin dre , d'un côté, la tête poussoir du piston (20) et le point de jonction du plateau poussoir du joint (16)
La dimension des branches formant le plateau (16) servant e poussoir du joint (7), e.st plus petite que
celle des ailettes (14) afin d'obtenir des entrées et sorties I'air importantes circulant entre lesdites bran ches . - Figure 2 is a view of the piston provided with the perforating dart, with the plate in the form of weakened branches; the piston carries the seal
- Figure 3 is a view of the gasket, its orifices and the pre-perforable cup
- Figure 4 shows the tray in the form of weakened branches
- Figure 5 is a front view of the push plate of the joint provided with branches allowing air to pass
- Figure 6 shows schematically, in the high position the perforation of the joint by the dart which is housed in the cone of the cylinder
- Figure 7 shows the representation, in the low position, the chamber effect and the air movements; the piston, on this variant, still intact, is in the return position
Figure 1 shows the cylinder (1), body of the syringe, with a cone (2) where is housed the dart, and thickened walls (4,5) playing a throttling role located towards the inside of the cylinder , creating the compression of the elastic joint, to facilitate its perforation; the thickness of the wall decreases, starting from 2/3 of the cylinder (5) to the bottom of the cone (4), corresponding to friction means, as well as a stop means in the form of 'A so-called ratchet ring (6) located near the cone (4) of the cylinder. This crown creates a sufficient stop to accentuate the perforation of the joint while preserving a gentle application of the force, during the injection phase, in the lumiere of the cone (3).
The cylinder (1) receives the piston (15) mounted with an elastic seal (ï), which slides axially along the cylinder
The piston, as illustrated in FIG. 2, has fixed on its rod (15) longitudinal recesses (14) in the form of fins allowing air intakes towards the chamber (8) of the seal through the branches or holes forming the plate (16), on the one hand, and serving for guiding and gripping, on the other hand. The ends of the fins (14) decrease in order to recess, on one side, the pusher head of the piston (20) and the junction point of the pusher plate of the seal (16)
The dimension of the branches forming the plate (16) serving as the seal push-button (7) is smaller than
that of the fins (14) in order to obtain significant inlets and outlets for the air circulating between said branches.

Dans le prolongement du piston (15), allant en s'amin cissant jusqu'à son extrémité apicale formant un dard perforateur (18) , se trouve , un plateau (17) sous la forme de branches, support de l'élément perforant (18) et placé centralement sur le piston (19) ; ce plateau sert de porteur du joint, en phase d'injection
Selon une variante de l'invention, des moyens de cassure des branches formant ce plateau (17) seront d'utiliser des matériaux dont les propriétés favo risent ces cassures ou en amincissant des parties de ces branches à proximité de la tige du piston (21).In the extension of the piston (15), tapering up to its apical end forming a perforating dart (18), there is a plate (17) in the form of branches, support of the perforating element ( 18) and placed centrally on the piston (19); this plate serves as a carrier for the seal, during the injection phase
According to a variant of the invention, means for breaking the branches forming this plate (17) will be to use materials whose properties favor these breaks or by thinning parts of these branches close to the piston rod (21 ).

La variante , selon cette procédure ,concernera un plateau (17) suffisamment solide pour ramener le piston (15) lors de l'aspiration et suffisamment fra gilisé aux branches (17) pour casser, en phase d'in jection, opposé aux tensions exercées par le goulot d'étranglement (4,5) et à la couronne de butée (6). The variant, according to this procedure, will relate to a plate (17) sufficiently solid to bring back the piston (15) during aspiration and sufficiently frailized to the branches (17) to break, during the injection phase, opposed to the tensions exerted through the bottleneck (4,5) and to the thrust ring (6).

Ainsi,lors d'une tentative d'une seconde aspira tion de liquide, les branches du plateau (17) butent sur la couronne de cliquetage (6) et sur le goulot d'étranglement (4,5), et cassent . Le piston (15,21) revient seul, laissant le joint (7) bloqué au fond du cylindre (3) ; cette variante permet de détruire la seringue . La faisabilité de ce type de plateau est réelle nécessitant une machine automatique qui écarte les lèvres du joint pour y introduire la tête du piston (18,21)
Selon l'invention, les plateaux (16) et (17) sont formés de branches permettant des prises d'air accentuant l'effet chambre du joint
La forme du joint (7), en pot de fleurs ou en vase, creux, pourvu d'une grande chambre, comme indi qué à la figure 3, a une base frontale ou une extré mité évasée (11) portant une coupelle (12) pré-perfo rable, et comporte au moins un orifice placé latéra lement (9) , ouvert à sa base distale (13). Il sert à maintenir l'étanchéité (10) et créer l'effet chambre.Thus, during an attempt at a second suction of liquid, the branches of the plate (17) abut on the ratchet ring (6) and on the bottleneck (4,5), and break. The piston (15,21) returns alone, leaving the seal (7) blocked at the bottom of the cylinder (3); this variant makes it possible to destroy the syringe. The feasibility of this type of plate is real requiring an automatic machine which spreads the lips of the joint to introduce the head of the piston therein (18,21)
According to the invention, the plates (16) and (17) are formed of branches allowing air intakes accentuating the chamber effect of the joint.
The shape of the joint (7), in a flowerpot or vase, hollow, provided with a large chamber, as indicated in FIG. 3, has a front base or a flared end (11) carrying a cup (12 ) pre-perforated, and comprises at least one laterally placed orifice (9), open at its distal base (13). It is used to maintain the seal (10) and create the chamber effect.

Monté sur l'extrémité apicale du piston (15,21), il est porté par les branches formant le plateau (17) et vient en butée contre les branches du plateau (16) qui lui sert de poussoir lors de la phase d'injection
La base frontale du joint (11) est amincie et porte une coupelle (12) pour faciliter sa perforation par l'élément perforant (18)
Sous l'effort d'application du piston (15), le dard (18) perfore la mince paroi (11,12) frontale du joint.Mounted on the apical end of the piston (15,21), it is carried by the branches forming the plate (17) and abuts against the branches of the plate (16) which serves as a pusher during the injection phase
The front base of the seal (11) is thinned and carries a cup (12) to facilitate its perforation by the perforating element (18)
Under the force of application of the piston (15), the dart (18) perforates the thin wall (11,12) front of the seal.

Un rééquilibrage des pressions s' effectue entre la pression dans le fond du cylindre (3) provenant à la fois de 1 exercice même de l'effort sur le volume rési duel et de la pression normale existante dans la cham bre du joint (8) . La tension du liquide résiduel sur la paroi s' annule . I1 ne reste plus que la pression ambiante; il n'y a pas encore l'effet chambre
La seringue n'est plus utilisable, dès lors
En cas d'une réutilisation, en tirant le piston (15) l'utilisateur n'aspirera plus le liquide mais l'air; ce même air qui provient de l'arrière de la seringue
C'est l'effet chambre par aspiration et refoulement d'air
L'air passe par les espaces ou trous existants entre les branches formant le plateau (16), les orifices laté raux (9), l'orifice perforé (12) du joint, et retour
La section de la perforation peut etre améliorée et contrôlée par la dimension de la coupelle ( 12)
De même, les orifices latéraux (9) du joint et la grande dimension de la chambre (8) dudit joint sans être indispensables ne peuvent qu'améliorer cet effet.A rebalancing of the pressures takes place between the pressure in the bottom of the cylinder (3) coming at the same time from 1 exercise of the effort on the residual volume and from the normal pressure existing in the chamber of the joint (8) . The tension of the residual liquid on the wall is canceled. I1 only remains the ambient pressure; there is no room effect yet
The syringe is no longer usable, therefore
In the event of re-use, by pulling the piston (15) the user will no longer suck up the liquid but the air; the same air coming from the back of the syringe
It is the chamber effect by air suction and discharge
The air passes through the spaces or holes existing between the branches forming the plate (16), the lateral orifices (9), the perforated orifice (12) of the joint, and return
The perforation section can be improved and controlled by the size of the cup (12)
Similarly, the lateral openings (9) of the seal and the large dimension of the chamber (8) of said seal without being essential can only improve this effect.

Une deuxième variante de cette invention réside en ce qu'il y ait des crans de blocage (22) situés sous le plateau (16) et à proximité de sa base, sous forme d'excroissances des ailettes ou des évidemments longitu dinaux (14) du piston (15) et servant à bloquer le retour du piston, une fois l'injection faite  A second variant of this invention resides in that there are blocking notches (22) situated under the plate (16) and close to its base, in the form of protuberances of the fins or of the longituinal recesses (14). piston (15) and used to block the return of the piston, once the injection is made

Claims (5)

REVENDICATIONS 1. Seringue à usage unique pourvue de moyens pour empêcher sa réutilisation, du type comportant un cylin dre à parois épaissies (5) terminé par un cône (2) dans lequel coulisse un piston (14) prolongé par un élément de perforation (18) et surmonté d'un joint (7) d'étanchéité , caractérisée en ce que ledit joint, en forme de vase creux, ouvert, à base étroite et fermé à son extrémité supérieure (11) évasée et à paroi amincie portant en son centre une coupelle pré-perforable (12), muni d'au moins un orifice (9) placé latéralement et donnant vers une chambre ou cavité (8) dans le joint élastique, est réalisé pour créer un effet chambre par aspiration et refoulement d'air après perforation (12) de sa partie supérieure (11) par l'élément perforant (18). 1. Single-use syringe provided with means to prevent its re-use, of the type comprising a thick-walled cylinder (5) terminated by a cone (2) in which slides a piston (14) extended by a perforating element (18) and surmounted by a seal (7) sealing, characterized in that said seal, in the form of a hollow vase, open, with a narrow base and closed at its upper end (11) flared and with a thinned wall carrying in its center a pre-perforable cup (12), provided with at least one orifice (9) placed laterally and giving towards a chamber or cavity (8) in the elastic joint, is produced to create a chamber effect by suction and discharge of air after perforation (12) of its upper part (11) by the perforating element (18). 2. Seringue, selon la revendication 1, caractérisée en ce qu'elle comporte, en outre, fixé centralement sur la tige de piston (15) portant à son extrémité apicale l'élément perforant (18) et formée d'ailettes ou d'évi demments longitudinaux (14), au moins un plateau (16,17) en forne de branches poussoirs du joint (8) laissant des prises d'air 2. Syringe according to claim 1, characterized in that it further comprises, fixed centrally on the piston rod (15) carrying at its apical end the perforating element (18) and formed of fins or longitudinal elements (14), at least one plate (16,17) in the form of pushing branches of the joint (8) leaving air intakes 3. Seringue, selon l'une des revendications précé dentes, caractérisée en ce que son cylindre comporte des moyens d'arrêt sous forme d'au moins une couronne (6) dite de cliquetage ,assurant la perforation,située à proximité du cône (4) du cylindre 3. Syringe, according to one of the preceding claims, characterized in that its cylinder comprises stop means in the form of at least one ring (6) called click, ensuring the perforation, located near the cone ( 4) of the cylinder 4. Seringue, selon l'une des revendications de 1 à 3, caractérisée par des moyens de frottement (4) et (5) sous forme d'épaississement progressif de la paroi inté rieure du cylindre (1) partant des 2/3 de celui-çi vers le fond du cône (4) créant un goulot d'étranglement  4. Syringe according to one of claims 1 to 3, characterized by friction means (4) and (5) in the form of progressive thickening of the inner wall of the cylinder (1) starting from 2/3 of this one towards the bottom of the cone (4) creating a bottleneck 5. Seringue, selon l'une quelconque des revendica tions précédentes, caractérisée en ce que son piston(l5) comporte des moyens de cassure des branches formant le plateau (17) porteur du joint (7) et support de l'élément perforant (18) , selon une autre procédure  5. Syringe according to any one of the preceding claims, characterized in that its piston (15) comprises means for breaking the branches forming the plate (17) carrying the seal (7) and support for the perforating element ( 18), according to another procedure
FR9312723A 1993-10-13 1993-10-26 Single-use, non-reusable, single-chamber syringe, provided with a perforating means and at least one means creating a chamber effect by suction and discharge of air. Expired - Fee Related FR2712497B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9312723A FR2712497B1 (en) 1993-10-13 1993-10-26 Single-use, non-reusable, single-chamber syringe, provided with a perforating means and at least one means creating a chamber effect by suction and discharge of air.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9312255A FR2712496A1 (en) 1993-10-13 1993-10-13 Single-use syringe
FR9312723A FR2712497B1 (en) 1993-10-13 1993-10-26 Single-use, non-reusable, single-chamber syringe, provided with a perforating means and at least one means creating a chamber effect by suction and discharge of air.

Publications (2)

Publication Number Publication Date
FR2712497A1 true FR2712497A1 (en) 1995-05-24
FR2712497B1 FR2712497B1 (en) 1996-04-19

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FR9312723A Expired - Fee Related FR2712497B1 (en) 1993-10-13 1993-10-26 Single-use, non-reusable, single-chamber syringe, provided with a perforating means and at least one means creating a chamber effect by suction and discharge of air.

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FR (1) FR2712497B1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4363329A (en) * 1978-01-17 1982-12-14 Concord Laboratories, Inc. Syringe having a reverse-taper barrel
FR2613628A1 (en) * 1987-04-10 1988-10-14 Emerit Andre SINGLE USE SYRINGE
EP0291109A1 (en) * 1987-04-21 1988-11-17 Nv Medicopharma Disposable syringe
WO1990003817A1 (en) * 1988-10-13 1990-04-19 Ewald Pickhard Injection device with prevention against re-use
FR2643819A1 (en) * 1989-03-02 1990-09-07 Emerit Michel Disposable syringe which can be used only once

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4363329A (en) * 1978-01-17 1982-12-14 Concord Laboratories, Inc. Syringe having a reverse-taper barrel
FR2613628A1 (en) * 1987-04-10 1988-10-14 Emerit Andre SINGLE USE SYRINGE
EP0291109A1 (en) * 1987-04-21 1988-11-17 Nv Medicopharma Disposable syringe
WO1990003817A1 (en) * 1988-10-13 1990-04-19 Ewald Pickhard Injection device with prevention against re-use
FR2643819A1 (en) * 1989-03-02 1990-09-07 Emerit Michel Disposable syringe which can be used only once

Also Published As

Publication number Publication date
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