FR2689766A1 - One-time medical syringe - has plunger equipped with threaded tip to engage with needle holder and retract it after use - Google Patents

One-time medical syringe - has plunger equipped with threaded tip to engage with needle holder and retract it after use Download PDF

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Publication number
FR2689766A1
FR2689766A1 FR9204483A FR9204483A FR2689766A1 FR 2689766 A1 FR2689766 A1 FR 2689766A1 FR 9204483 A FR9204483 A FR 9204483A FR 9204483 A FR9204483 A FR 9204483A FR 2689766 A1 FR2689766 A1 FR 2689766A1
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France
Prior art keywords
needle
base
piston
syringe
plunger
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Pending
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FR9204483A
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French (fr)
Inventor
Lenois Michel
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Individual
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Individual
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Priority to FR9204483A priority Critical patent/FR2689766A1/en
Publication of FR2689766A1 publication Critical patent/FR2689766A1/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
    • A61M5/178—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
    • A61M5/3205—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
    • A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the 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
    • A61M5/31501—Means for blocking or restricting the movement of the rod or piston
    • A61M5/31505—Integral with the syringe barrel, i.e. connected to the barrel so as to make up a single complete piece or unit
    • A61M2005/31506—Integral with the syringe barrel, i.e. connected to the barrel so as to make up a single complete piece or unit formed as a single piece, e.g. moulded
    • 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
    • A61M2005/31508—Means for blocking or restricting the movement of the rod or piston provided on the 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
    • A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/3278—Apparatus for destroying used needles or syringes
    • A61M2005/3279—Breaking syringe nozzles or needle hubs

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Hematology (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 one-time medical syringe has a needle holder (9) with a conical tip (1), connected to the end of the barrel (5) by a rupture zone (2) and equipped with an internal thread (10) to engage with a threaded tip (11) on the end of the plunger (12). The piston (4) has a seal (3) in the form of a compressible elastic element which covers the threaded tip (11), and the plunger has a zone (13) of reduced thickness which enables it to be bent over after use. Once the syringe has been used the plunger tip is screwed into the needle holder, compressing the seal (3). The plunger is then withdrawn into the barrel, retracting the needle with it, and is then bent over at right angles so that the projection (14) on the side of the plunger can be engaged with hole (15) in a lug at the end of the barrel. ADVANTAGE - More convenient to use, preventing risk of transmitting infectious diseases by cross-contamination.

Description

La présente invention concerne une seringue médicale à usage unique dont l'embase d'aiguille est détachable par fixation par vissage sur le piston et verrouillable dans le corps de la seringue par pliage de la tige de manoeuvre du piston. The present invention relates to a single-use medical syringe, the needle base of which is detachable by screwing onto the plunger and lockable in the body of the syringe by folding the plunger operating rod.

Après usage les aiguilles de seringue peuvent, par piqûre accidentelle de lrutilisateur, transmettre certaines maladies, en particulier des maladies virales. Par ailleurs une seringue usagée reste réutilisable et peut être réemployée volontairement ou accidentellement ce qui comporte un risque de transmission de maladies infectieuses en cas de non stérilisation. Le seul procédé limitant les risques consiste à collecter les seringues immédiatement après usage dans un récipient non perforable. Cette façon de faire présente un inconvénient : il est nécessaire que le récipient soit en permanence à proximité immédiate de l'utilisateur ce qui est parfois difficile à réaliser, en particulier lors des soins à domicile ou quand la seringue est utilisée par un toxicomane. After use the syringe needles can, by accidental injection from the user, transmit certain diseases, in particular viral diseases. In addition, a used syringe remains reusable and can be reused voluntarily or accidentally, which involves a risk of transmission of infectious diseases in the event of non-sterilization. The only risk-limiting process is to collect the syringes immediately after use in a non-puncture container. This procedure has a drawback: it is necessary for the container to be permanently in the immediate vicinity of the user, which is sometimes difficult to achieve, in particular during home care or when the syringe is used by an addict.

Le dispositif selon l'invention permet de remédier à l'ensemble de ces inconvénients. Il se compose de trois parties - un corps de seringue comportant tout autour de l'embase de l'aiguille une zone amincie formant amorce de rupture. La partie interne de cette embase est munie d'un logement fileté. The device according to the invention overcomes all of these drawbacks. It consists of three parts - a syringe body having all around the base of the needle a thinned area forming a primer. The internal part of this base is provided with a threaded housing.

Ce logement fileté est situé dans l'axe longitudinal du corps de la seringue. La collerette du corps comporte un trou.This threaded housing is located in the longitudinal axis of the body of the syringe. The body flange has a hole.

- un piston muni à son extrémité d'un prolongement fileté, en concordance avec le filetage du logement de l'embase. la tige de manoeuvre du piston comporte une zone amincie permettant de la plier, et sur une de ses faces présente un téton dont l'extrémité est en forme de pointe de flèche.- a piston fitted at its end with a threaded extension, in accordance with the thread of the base housing. the piston operating rod has a thinned zone allowing it to be folded, and on one of its faces has a stud whose end is in the shape of an arrowhead.

- un joint qui joue deux rôles : il assure l'étanchéité et il contient en totalité le prolongement fileté du piston. Ce joint est réalisé dans une matière déformable et facilement compressible, par exemple du caoutchouc.- a gasket which plays two roles: it seals and it completely contains the threaded extension of the piston. This seal is made of a deformable and easily compressible material, for example rubber.

Une fois la seringue utilisée, l'usager exerce un mouvement de rotation sur le piston par rapport au corps, par l'intermédiaire de la tige de manoeuvre. Ce mouvement-a pour effet d'engager le prolongement fileté dans le logement de l'embase et de solidariser ladite embase du piston. Le mouvement de vissage exerce une traction sur l'embase ce qui la détache du corps au niveau de la zone formant amorce de rupture. Pendant cette opération le joint est comprimé. Une fois l'embase détachée l'usager tire la tige de manoeuvre vers lui puis la plie et engage le téton dans le trou de la collerette. L'embase est ainsi verrouillée dans le corps de la seringue. Les dimensions du dispositif sont telles qu'en position verrouillée, l'aiguille fixée sur le cône porté par 1 'embase est contenue en totalité dans le corps de la seringue ce qui élimine tout risque de piqûre accidentelle. Par ailleurs la seringue est devenue inutilisable ce qui interdit toute réutilisation. Once the syringe has been used, the user exerts a rotation movement on the piston relative to the body, by means of the operating rod. This movement-has the effect of engaging the threaded extension in the housing of the base and securing said base of the piston. The screwing movement exerts traction on the base, which detaches it from the body at the level of the initiation of rupture. During this operation the seal is compressed. Once the base detached, the user pulls the operating rod towards him then bends it and engages the stud in the hole in the collar. The base is thus locked in the body of the syringe. The dimensions of the device are such that in the locked position, the needle fixed on the cone carried by one base is completely contained in the body of the syringe, which eliminates any risk of accidental puncture. Furthermore, the syringe has become unusable, which prohibits any reuse.

Selon des modes particuliers de réalisation - l'aiguille peut être soit une aiguille amovible fixée par emboîtement sur un cône normalisé porté par l'embase, soit une aiguille fixe et inamovible de l'embase par fabrication.According to particular embodiments - the needle can be either a removable needle fixed by interlocking on a standardized cone carried by the base, or a fixed and irremovable needle of the base by manufacture.

- le joint peut posséder une zone périphérique peu compressible et une zone centrale plus facilement compressible ce qui a pour effet d'une part de faciliter la traction par vissage et d'autre part d'éviter la déformation et l'écrasement de la partie périphérique contre la paroi interne du corps ce qui gênerait le mouvement de tirage vers l'utilisateur.- The joint can have a peripheral area that is not very compressible and a central area that is more easily compressible, which has the effect of facilitating traction by screwing on the one hand and avoiding deformation and crushing of the peripheral portion against the inner wall of the body which would hinder the pulling movement towards the user.

- le corps de la seringue peut, dans le cas d'une seringue munie d'un cône d'emboîtement, porter une ou plusieurs marques colorées en référence aux couleurs des cônes d'emboîtement femelles des aiguilles à injection afin d'indiquer la ou les aiguilles pouvant être contenues en totalité dans une seringue donnée, ceci afin d'éviter l'utilisation d'aiguilles trop longues dont la pointe ferait saillie hors du corps une fois l'embase rétractée et verrouillée.- the body of the syringe may, in the case of a syringe provided with a socket cone, bear one or more colored marks with reference to the colors of the female socket cones of the injection needles in order to indicate the or the needles can be contained entirely in a given syringe, this in order to avoid the use of too long needles whose point would protrude out of the body once the base retracted and locked.

- le trou pratiqué dans la collerette peut être muni de plusieurs fentes périphériques dirigées selon des rayons de façon à faciliter le passage du téton de verrouillage.- The hole made in the flange can be provided with several peripheral slots directed along spokes so as to facilitate the passage of the locking stud.

- l'ensemble du corps de seringue peut être fabriqué en une seule pièce obtenue par moulage de matière plastique par injection. - The entire syringe body can be manufactured in a single piece obtained by plastic injection molding.

- l'ensemble piston-tige de manoeuvre-ergot peut être fabriqué en une seule pièce obtenue par moulage de matière plastique par injection.- The piston-actuator-lug assembly can be manufactured in one piece obtained by injection molding of plastic material.

- le filetage de l'évidement de embase et le filetage du prolongement du piston peuvent être du type filetage de traction avec un profil en dents de scie afin d'améliorer la solidité de l'ensemble une fois le vissage effectué.- The thread of the base recess and the thread of the piston extension can be of the traction thread type with a sawtooth profile in order to improve the solidity of the assembly once the screwing has been carried out.

- dans le cas où l'aiguille est une aiguille fixe et inamovible la forme et les dimensions de l'embase sont telles qu'elles permettent la mise en place d'un capuchon de protection sur l'aiguille.- In the case where the needle is a fixed and irremovable needle, the shape and dimensions of the base are such that they allow the fitting of a protective cap on the needle.

Les dessins annexés illustrent l'invention - la figure 1 représente le dispositif selon l'invention, dans sa version destinée à recevoir une aiguille amovible, avant utilisation.The accompanying drawings illustrate the invention - Figure 1 shows the device according to the invention, in its version intended to receive a removable needle, before use.

- la figure 2 représente la collerette du corps de la seringue, vue en bout.- Figure 2 shows the flange of the body of the syringe, seen at the end.

- la figure 3 représente le dispositif selon l'invention, en coupe transversale selon AA.- Figure 3 shows the device according to the invention, in cross section along AA.

- la figure 4 représente le dispositif selon l'invention, après usage, l'embase étant verrouillée.- Figure 4 shows the device according to the invention, after use, the base being locked.

En référence à ces dessins, le dispositif selon l'invention se compose d'un corps de seringue (5). L'extrémité de ce corps portant l'embase (9) qui elle même est munie d'un cône d'emboîtement (1) destiné à recevoir une aiguille comporte une zone de plus faible épaisseur (2) faisant le tour de l'embase et formant amorce de rupture. La partie interne de l'embase (9) comporte un logement fileté (10) situé dans l'axe longitudinal du corps (5). La collerette (7) comporte un trou (15) muni sur sa périphérie de plusieurs fentes (16) dirigées selon des rayons. Le piston se compose du piston proprement dit (4) et de la tige de manoeuvre. La tige de manoeuvre comporte une partie de section cruciforme (12) attenant au piston (4), la raison d'être de cette forme est de permettre un meilleur maintien du piston (4) dans le corps (5) lors des manoeuvres.With reference to these drawings, the device according to the invention consists of a syringe body (5). The end of this body carrying the base (9) which itself is provided with an interlocking cone (1) intended to receive a needle comprises a zone of thinner thickness (2) going around the base and forming initiation of rupture. The internal part of the base (9) has a threaded housing (10) located in the longitudinal axis of the body (5). The collar (7) has a hole (15) provided on its periphery with several slots (16) directed along spokes. The piston consists of the piston itself (4) and the operating rod. The operating rod has a cruciform section part (12) adjoining the piston (4), the reason for this shape being to allow better retention of the piston (4) in the body (5) during the maneuvers.

Faisant suite à cette partie de section cruciforme, une partie de section plate (6) dont une zone (13) est amincie de façon à permettre le pliage lors du verrouillage. Following this cruciform section part, a flat section part (6) of which a zone (13) is thinned so as to allow folding during locking.

La tige de manoeuvre comporte à son extrémité sortant du corps de la seringue (5) une zone d'appui (8) et au niveau de sa partie plate (6) au niveau de l'une de ses faces un ergot (14) dont l'extrémité est en forme de pointe de flèche, le diamètre de la base de cet ergot lui permet d'être maintenu dans le trou (15) pratiqué dans la collerette. Le piston (4) comporte en son centre un prolongement fileté (11) dont le filetage est en concordance avec le filetage du logement (10). Le joint (3) réalisé en une matière élastique et compressible est emboîté sur le prolongement fileté (11) et le contient entièrement.The operating rod has at its end leaving the body of the syringe (5) a support zone (8) and at its flat part (6) at one of its faces a lug (14) of which the end is in the shape of an arrowhead, the diameter of the base of this lug allows it to be held in the hole (15) made in the flange. The piston (4) has at its center a threaded extension (11), the thread of which is in accordance with the thread of the housing (10). The seal (3) made of an elastic and compressible material is fitted onto the threaded extension (11) and contains it entirely.

L'utilisation de la seringue est identique à celle d'une seringue de modèle habituel. Après usage l'utilisateur fait effectuer au piston (4) un mouvement de rotation par l'intermédiaire de la tige de manoeuvre (8) (6) (13) (12). Cette rotation engage par vissage le prolongement (11) dans le logement (10) ce qui assure la solidarisation. Pendant le vissage l'embase subit une traction ce qui provoque le sectionnement de la zone amincie (2) avec comme résultat la désolidarisation de l'embase (9) et du corps (5). Une fois l'embase détachée l'utilisateur exerce une traction sur la tige de manoeuvre par préhension de la zone d'appui (8) ce qui fait rentrer l'embase (9) dans le corps (5). L'embase entraîne avec elle l'aiguille fixée sur le cône (1). Une fois l'aiguille entièrement contenue dans le corps (5) l'utilisateur exerce un mouvement de flexion ce qui plie la tige de manoeuvre au niveau de la zone amincie (13) et engage l'ergot (14) dans le trou (15).The use of the syringe is identical to that of a standard model syringe. After use the user causes the piston (4) to perform a rotational movement by means of the operating rod (8) (6) (13) (12). This rotation engages by screwing the extension (11) in the housing (10) which ensures the connection. During the screwing the base undergoes a traction which causes the cutting of the thinned zone (2) with as a result the separation of the base (9) and the body (5). Once the base detached, the user exerts traction on the operating rod by gripping the support zone (8), which causes the base (9) to enter the body (5). The base carries with it the needle fixed on the cone (1). Once the needle is fully contained in the body (5) the user exerts a flexion movement which bends the operating rod at the thinned zone (13) and engages the lug (14) in the hole (15 ).

Les fentes (16) permettent l'engagement. Une fois l'ergot enclenché, sa forme l'empêche de ressortir.The slots (16) allow engagement. Once the lug is engaged, its shape prevents it from coming out.

Les dimensions du dispositif dépendent de la capacité de la seringue et de la taille de l'aiguille destinée à y être fixée.The dimensions of the device depend on the capacity of the syringe and the size of the needle intended to be attached to it.

A titre d'exemple non limitatif, pour une capacité de cinq millilitres, le diamètre du corps de la seringue sera de l'ordre de 14 millimètres et sa longueur de l'ordre de 80 millimètres.By way of nonlimiting example, for a capacity of five milliliters, the diameter of the body of the syringe will be of the order of 14 millimeters and its length of the order of 80 millimeters.

Mode de fabrication possible : - le corps de la seringue peut être obtenu en totalité (1) (9) (2) (10) (5) (7) (15) (16) en une seule opération de moulage de matière plastique par injection. Possible manufacturing method: - the entire syringe body can be obtained (1) (9) (2) (10) (5) (7) (15) (16) in a single plastic molding operation by injection.

Dans le cas où l'aiguille est une aiguille fixe et inamovible l'extrémité de cette aiguille est prise dans le plastique pendant le moulage.In the case where the needle is a fixed and irremovable needle, the end of this needle is caught in the plastic during molding.

- l'ensemble piston-tige de manoeuvre (11) (4) (12) (13) (6) (14) (8) peut être obtenu en une sule opération de moulage de matière plastique par injection.- the piston-actuator rod assembly (11) (4) (12) (13) (6) (14) (8) can be obtained in a single plastic injection molding operation.

- le joint (3) est obtenu par moulage de caoutchouc. - The seal (3) is obtained by molding rubber.

Claims (8)

REVENDICATIONS 1/ Seringue médicale à usage unique caractérisée en ce que l'embase de l'aiguille (9) portant un cône d'emboîtement (1) comporte sur tout son pourtour une zone amincie (2) formant amorce de rupture. La partie interne de l'embase comporte un logement fileté (10) disposé dans l'axe longitudinal du corps (5). Le piston (4) comporte un prolongement fileté (11) situé en son centre et dont le filetage est en concordance avec celui du logement (10). La tige de manoeuvre du piston (4) comporte une zone de section cruciforme (12) et une zone de section plate (6) dont une partie (13) est amincie de façon à permettre le pliage. Un ergot (14) dont l'extrémité est en forme de pointe de flèche fait saillie sur une des faces de la zone plate (6). Cet ergot peut s'engager dans un trou (15) existant au niveau de la collerette (7). Des fentes (16) sont disposées sur le pourtour de ce trou selon des rayons. 1 'extré- mité de la section plate (6) comporte une zone d'appui (8). 1 / Single-use medical syringe, characterized in that the base of the needle (9) carrying a fitting cone (1) has around its entire periphery a thinned zone (2) forming a starting point for rupture. The internal part of the base includes a threaded housing (10) arranged in the longitudinal axis of the body (5). The piston (4) has a threaded extension (11) located at its center and the thread of which matches that of the housing (10). The piston operating rod (4) has a cross-section area (12) and a flat section area (6), a part (13) of which is thinned so as to allow folding. A lug (14) whose end is in the shape of an arrowhead protrudes on one of the faces of the flat area (6). This lug can engage in a hole (15) existing at the flange (7). Slits (16) are arranged around the periphery of this hole along radii. 1 end of the flat section (6) has a support area (8). Le joint (3) contient en totalité le prolongement fileté (11), sur lequel il est engagé, ce joint est réalisé dans une matière compressible et élastique.The seal (3) completely contains the threaded extension (11), on which it is engaged, this seal is made of a compressible and elastic material. 2/ Dispositif selon la revendication 1 caractérisé en ce que l'aiguille au lieu d'être fixée par emboîtement sur le cône (1) est une aiguille fixe solidaire par fabrication de l'embase (9). 2 / Device according to claim 1 characterized in that the needle instead of being fixed by interlocking on the cone (1) is a fixed needle secured by manufacture of the base (9). 3/ Dispositif selon la revendication 2 caractérisé en ce que l'embase de l'aiguille (9) a une forme lui permettant de recevoir un capuchon protecteur d'aiguille. 3 / Device according to claim 2 characterized in that the base of the needle (9) has a shape allowing it to receive a needle protective cap. 4/ Dispositif selon la revendication 1 ou la revendication 2 caractérisé en ce que le filetage du logement (10) et le filetage du prolongement (11) sont du type filetage de traction à profil en dents de scie. 4 / Device according to claim 1 or claim 2 characterized in that the thread of the housing (10) and the thread of the extension (11) are of the traction thread type with a sawtooth profile. 5/ Dispositif selon la revendication 1 caractérisé en ce que le corps (5) porte une ou plusieurs marques colorées en référence aux couleurs des cônes femelles d'emboîtement des aiguilles pouvant être contenues entièrement dans le dispositif après usage.  5 / Device according to claim 1 characterized in that the body (5) carries one or more colored marks with reference to the colors of the female cones of interlocking needles may be contained entirely in the device after use. 6/ Dispositif selon la revendication 1 ou la revendication 2 caractérisé en ce que l'ensemble du corps (1) (9) (2) (10) (5) (7) (15) (16) est obtenu en une seule opération de moulage de matière plastique par injection. 6 / Device according to claim 1 or claim 2 characterized in that the entire body (1) (9) (2) (10) (5) (7) (15) (16) is obtained in a single operation plastic injection molding. 7/ Dispositif selon la revendication 1 ou la revendication 2 caractérisé en ce que l'ensemble piston-tige de manoeuvre-ergot (11) (4) (12) (13) (6) (14) (8) est obtenu en une seule opération de moulage de matière plastique par injection. 7 / Apparatus according to claim 1 or claim 2 characterized in that the piston-actuator-lug assembly (11) (4) (12) (13) (6) (14) (8) is obtained in one single plastic injection molding operation. 8/ Dispositif selon la revendication 1 ou la revendication 2 caractérisé en ce que le joint (3) comporte une zone périphérique moins compressible que la partie centrale.  8 / Device according to claim 1 or claim 2 characterized in that the seal (3) has a less compressible peripheral area than the central part.
FR9204483A 1992-04-09 1992-04-09 One-time medical syringe - has plunger equipped with threaded tip to engage with needle holder and retract it after use Pending FR2689766A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9204483A FR2689766A1 (en) 1992-04-09 1992-04-09 One-time medical syringe - has plunger equipped with threaded tip to engage with needle holder and retract it after use

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9204483A FR2689766A1 (en) 1992-04-09 1992-04-09 One-time medical syringe - has plunger equipped with threaded tip to engage with needle holder and retract it after use

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FR2689766A1 true FR2689766A1 (en) 1993-10-15

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997010867A1 (en) * 1995-09-22 1997-03-27 Brice Somers Safety syringe
EP1287842A1 (en) * 2001-08-27 2003-03-05 Ting Shen Safety device for a safety syringe
JP2006519042A (en) * 2003-02-27 2006-08-24 ベー・ブラウン・メルズンゲン・アクチエンゲゼルシャフト Safety syringe with retractable needle
WO2008004114A1 (en) * 2006-07-04 2008-01-10 Maurice Loretti Safety syringe
GB2445733A (en) * 2006-08-15 2008-07-23 David Alan Halfpenny Medical syringe
GB2452562A (en) * 2007-09-08 2009-03-11 George Alex A hinged plunger for an aspiration syringe
WO2010096879A1 (en) * 2009-02-28 2010-09-02 Global Medisafe Holdings Limited Retractable safety syringe with compressible gasket means

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4026287A (en) * 1975-12-10 1977-05-31 Irene Haller Syringe with retractable cannula
US4692156A (en) * 1985-12-06 1987-09-08 Irene Haller Disposable syringe with retractable cannula
WO1989010151A1 (en) * 1988-04-18 1989-11-02 Nujenko Pty Ltd Single-use syringe
US4927416A (en) * 1987-12-02 1990-05-22 National Medical Device Corporation User-protective hypodermic syringe holder
WO1991000750A1 (en) * 1989-07-11 1991-01-24 Graham Hugh Williams Disposable hypodermic syringe with retractable needle
US4995874A (en) * 1989-06-23 1991-02-26 Strickland H Allen Disposable syringe device
US5000738A (en) * 1989-05-11 1991-03-19 Lavallo Frank Protective syringe with frangible barrel

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4026287A (en) * 1975-12-10 1977-05-31 Irene Haller Syringe with retractable cannula
US4692156A (en) * 1985-12-06 1987-09-08 Irene Haller Disposable syringe with retractable cannula
US4927416A (en) * 1987-12-02 1990-05-22 National Medical Device Corporation User-protective hypodermic syringe holder
WO1989010151A1 (en) * 1988-04-18 1989-11-02 Nujenko Pty Ltd Single-use syringe
US5000738A (en) * 1989-05-11 1991-03-19 Lavallo Frank Protective syringe with frangible barrel
US4995874A (en) * 1989-06-23 1991-02-26 Strickland H Allen Disposable syringe device
WO1991000750A1 (en) * 1989-07-11 1991-01-24 Graham Hugh Williams Disposable hypodermic syringe with retractable needle

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997010867A1 (en) * 1995-09-22 1997-03-27 Brice Somers Safety syringe
EP1287842A1 (en) * 2001-08-27 2003-03-05 Ting Shen Safety device for a safety syringe
JP2006519042A (en) * 2003-02-27 2006-08-24 ベー・ブラウン・メルズンゲン・アクチエンゲゼルシャフト Safety syringe with retractable needle
WO2008004114A1 (en) * 2006-07-04 2008-01-10 Maurice Loretti Safety syringe
GB2445733A (en) * 2006-08-15 2008-07-23 David Alan Halfpenny Medical syringe
GB2445733B (en) * 2006-08-15 2011-04-27 David Alan Halfpenny Medical syringe
GB2452562A (en) * 2007-09-08 2009-03-11 George Alex A hinged plunger for an aspiration syringe
WO2010096879A1 (en) * 2009-02-28 2010-09-02 Global Medisafe Holdings Limited Retractable safety syringe with compressible gasket means

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