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FR2633186A1 - SINGLE-USE HYPODERMIC SYRINGE - Google Patents

SINGLE-USE HYPODERMIC SYRINGE Download PDF

Info

Publication number
FR2633186A1
FR2633186A1 FR8808363A FR8808363A FR2633186A1 FR 2633186 A1 FR2633186 A1 FR 2633186A1 FR 8808363 A FR8808363 A FR 8808363A FR 8808363 A FR8808363 A FR 8808363A FR 2633186 A1 FR2633186 A1 FR 2633186A1
Authority
FR
France
Prior art keywords
syringe
piston
blocking device
racks
teeth
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.)
Pending
Application number
FR8808363A
Other languages
French (fr)
Inventor
Jean-Charles Court
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to FR8808363A priority Critical patent/FR2633186A1/en
Priority to PCT/FR1989/000319 priority patent/WO1989012476A1/en
Priority to EP19890907774 priority patent/EP0383865A1/en
Priority to AU38661/89A priority patent/AU3866189A/en
Publication of FR2633186A1 publication Critical patent/FR2633186A1/en
Pending 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
    • A61M5/315—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
    • A61M5/50—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
    • A61M5/5013—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/50—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
    • A61M5/5013—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe
    • A61M5/502—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe for blocking the piston
    • A61M2005/5026—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe for blocking the piston allowing single filling of syringe

Landscapes

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

Abstract

Syringe usable on one single occasion with locking in position of the piston after a first use. The syringe consists of a body (1) equipped with a center-piece (3), provided with a piston locking device (5) having two ratchets pointing in opposite directions. When the user has filled the syringe by suction using the piston (5), he exerts a pressure in order to start ejection of the liquid. The separating ring (4) is entrained, thereby releasing the locking device. It is then impossible to refill the syringe. The syringe according to the invention is particularly useful for preventing the propagation of certain diseases by the use of contaminated syringes.

Description

La présente invention concerne une seringue hypodermique dont l'utilisation est rendue impossible après une première utilisation.The present invention relates to a hypodermic syringe whose use is made impossible after a first use.

La seringue suivant lsinvention présente un dispositif de clipsage de l'aiguille empéchant le réemploi de celle-ci sur une autre seringue. Le piston est pourvu d'un dispositif entrainant en translation la bague d'écartement dans le sens À tel que représenté fig.l. The syringe according to the invention has a device for clipping the needle preventing it from being reused on another syringe. The piston is provided with a device driving in translation the spacer ring in direction A as shown in fig.l.

La partie arrière de la seringue est équipée d'un dispositif muni de languettes dont la fonction est d'immobiliser le piston. Ce dispositif est rendu solidaire du corps de la seringue. Lors de l'emploi de la seringue l'effet de ce dispositif est annulé par une bague maintenant les languettes de blocage écartées.The rear part of the syringe is equipped with a device provided with tongues whose function is to immobilize the piston. This device is made integral with the body of the syringe. When using the syringe the effect of this device is canceled by a ring holding the locking tabs apart.

Lors du remplissage de la seringue, l'utilisateur tire sur le piston. Lorsqusil commence a presser le piston, celui-ci entraine la bague d'écartement celle ci libère les languettes de clipsacle. When filling the syringe, the user pulls on the plunger. When it starts to press the piston, it drives the spacer ring that releases the clips from the clips.

Dès lors, il est impossible de tirer le piston et donc de remplir la seringue.Therefore, it is impossible to pull the plunger and therefore fill the syringe.

Selon une forme de réalisation préférentielle, l'aiguille est rendue indémontable par un dispositif de clipsage.According to a preferred embodiment, the needle is made removable by a clipping device.

Selon une variante, l'aiguille peut store rendue indémontable par urmoul age. According to a variant, the needle can store made non-removable by urmoul age.

Selon une forme de réalisation préférentielle, les dispositifs d'entrainement et cie blocage du piston sont réalisés sous forme de crémaillères moulées sur le corps du piston.According to a preferred embodiment, the drive devices and blocking of the piston are produced in the form of racks molded on the body of the piston.

Selon une variante, les dispositifs d'engrenage peuvent Entre réalisés sous forme de parties métalliques, par exemple bronze au bérilium, surmoulées sur la bague d'écartement et sur le dispositif de blocage.According to a variant, the gear devices can be produced in the form of metal parts, for example beryllium bronze, overmolded on the spacer ring and on the locking device.

La figure 1 représente en coupe la seringue a usage unique.Figure 1 shows in section the disposable syringe.

La figure 2 représente en coupe une variante de cette seringue.Figure 2 shows in section a variant of this syringe.

La figure Z. représente le piston.Figure Z. shows the piston.

La figure 4 représente le dispositif de blocage.Figure 4 shows the locking device.

La figure 5 représente la bague d'écartement. Figure 5 shows the spacer ring.

La seringue représentée sur la figure 1 comporte un corps de seringue. L'aiguille est rendue indémontable par collage , surmoulag clipsage.The syringe shown in Figure 1 has a syringe body. The needle is made non-removable by gluing, overmolding clipping.

le piston représenté figure T est réalisé en matière plastique moulé
Le corps du piston est constitué de 2 nervures dont la section forme une croix. the piston shown in Figure T is made of molded plastic
The piston body is made up of 2 ribs, the cross section of which forms a cross.

2 branches de cette croix présentent sur toute leur longueur 1 crémaillère constituée de dents au pas de l'ordre de 1,5 mm. Le prof de ces dents est tel que l'engrenage ne se produit que dans 1 ses, les deux autres branches de cette croc: présentent 1 crémaillère de sens inverse à la première.2 branches of this cross have over their entire length 1 rack made up of teeth with a pitch of the order of 1.5 mm. The teacher of these teeth is such that the gear occurs only in 1 ses, the two other branches of this hook: have 1 rack in opposite direction to the first.

fi l'extrémité opposée a l'aiguille se trouve un dispositif de blocage repère (3) figure t représenté figure 4. fi the end opposite the needle is a blocking device (3) figure t shown in figure 4.

Ce dispositif de blocage est réalisé en 2 demi pièces moulées en for forme de cylindre présentant a une extrémité un épaulement destiné @ le rendre solidaire du corps de la seringue par collage, thermo soudure ou soudure ultra-sonique.This blocking device is produced in 2 half parts molded in the form of a cylinder having at one end a shoulder intended to make it integral with the body of the syringe by gluing, heat welding or ultra-sonic welding.

Sur les parois intérieures du cylindre cont moulées 2 languettes muni e de dents engrenant sur l'une der crémai 1 1 ères du piston
crémaillère engrenant dans le sens P tel que représenté figure t). On the inside walls of the cont molded cylinder 2 tabs with teeth meshing on one of the cremai 1 1 st piston
rack meshing in direction P as shown in Figure t).

Les languettes montées de telle serte que au repos, les dents sont engagées dans la crémaillère du piston : leur section et le matéria utj'.lisé pour leur fabrication permet de dégager la dent par pression sur la longuette.The tongues mounted such a hoop that at rest, the teeth are engaged in the rack of the piston: their section and the material utj'.lisé for their manufacture allows to release the tooth by pressure on the longuette.

Une bague d'écartement repère 4 figure l réalisée en 2 demi pièces moulées présente à une extrémité un épaulement introduit dans les languettes du dispositif de blocage de manière a en maintenir les dents éloignées de la crémaillère du piston.A spacer ring marked 4 in FIG. 1 produced in 2 half molded parts has at one end a shoulder introduced into the tongues of the blocking device so as to keep the teeth away from the rack of the piston.

La longueur de cet épaulement est tel que les languettes du disposi de blocage sont libérées après une course d'environ 2,5 mm.The length of this shoulder is such that the tongues of the blocking device are released after a stroke of approximately 2.5 mm.

À l'intérieur de la bague d'écartement s trouvent des languettes élastiques munies de dents engrenant dans le sens fi tel que représer figure 1. Inside the spacer ring there are elastic tongues provided with teeth meshing in the fi direction as shown in FIG. 1.

La seringue selon l'invention est particulièrement indiquée pour lutter contre la propagation du SIDÀ et de l'hépatite B par l'utili- sation de seringue contaminées. The syringe according to the invention is particularly indicated for combating the spread of SIDÀ and hepatitis B by the use of contaminated syringes.

Claims (6)

REVENDICATIONS 1) Seringue hypodermique à usage unique caractérisée en ce que son piston (5) présente sur sa longueur deux crémaillières engrenant pour l'une dans le sens de la pression (A) et pour l'autre dans le sens de la traction(B) ; en ce que le corps de la seringue présente à son extrémité opposée à l'aiguille un dispositif de blocage (3) constitué d'une partie cylindrique pénétrant à l'intérieur du corps de la seringue, rendue solidaire de celui-ci ; en ce que sur les parois internes de ce cylindre se trouvent des languettes flexibles (D) pourvues de dents engrenant sur l'une des crémailliéres du piston (8) ;en ce que une bague d'écartement (4) destinée à èloigner les dents appartenant au dispositiF de blocage de la crémailliere comporte un épaulement introduit entre les languettes flexibles du dispositif de blocage , cette bague d'écartement présentant elle même des lan -guettes flexibles(D) pourvues de dents engrenant avec la cremaillière dans le sens de la pression.1) Single-use hypodermic syringe characterized in that its piston (5) has on its length two racks meshing for one in the direction of pressure (A) and for the other in the direction of traction (B) ; in that the body of the syringe has at its end opposite the needle a blocking device (3) consisting of a cylindrical part penetrating inside the body of the syringe, made integral with the latter; in that on the internal walls of this cylinder are flexible tongues (D) provided with teeth meshing on one of the racks of the piston (8); in that a spacer ring (4) intended to distance the teeth belonging to the rack blocking device has a shoulder inserted between the flexible tongues of the blocking device, this spacer ring itself having flexible lan clips (D) provided with teeth meshing with the rack in the pressure direction . 2) Seringue selon la revendication l,caractérisée en ce que le corps du piston a une section en croix presentant sur toute la longueur des génératrices 2 crémailliéres de sens inversé réalisées par moulage2) Syringe according to claim l, characterized in that the piston body has a cross section having over the entire length of the generators 2 reverse racks produced by molding 3) Seringue selon les revendications 1 et 2, caractérisée en ce que les dents des crémaillières ont un profil non symétrique présentant dans un sens une rampe inclinée (anglet() permettant un glissement de la dent par éloignement de la languette flexible et dans l'autre sens une paroi perpendiculaire à l'axe longitudinal du piston.3) Syringe according to claims 1 and 2, characterized in that the teeth of the racks have a non-symmetrical profile having in one direction an inclined ramp (anglet () allowing a sliding of the tooth by distancing the flexible tongue and in the another direction a wall perpendicular to the longitudinal axis of the piston. 4) Seringue selon la revendication 1 ,caractèrisée en ce que le dispo -sitif de blocage est réalisé en 2 demi coquilles moulées.4) Syringe according to claim 1, characterized in that the blocking device is made of 2 molded half shells. 5) Seringue selon la revendication 1 , caractérisée en ce que la bague d'écartement est réalisée en 2 pièces moulées.5) Syringe according to claim 1, characterized in that the spacer ring is made of 2 molded parts. 6) Seringue selon l'une quiconque des revendications précédentes caractérisée en ce que l'aiguille est rendue indissociable par clipsage sur l'embout de la seringue. 6) Syringe according to any one of the preceding claims characterized in that the needle is made inseparable by clipping on the tip of the syringe.
FR8808363A 1988-06-22 1988-06-22 SINGLE-USE HYPODERMIC SYRINGE Pending FR2633186A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR8808363A FR2633186A1 (en) 1988-06-22 1988-06-22 SINGLE-USE HYPODERMIC SYRINGE
PCT/FR1989/000319 WO1989012476A1 (en) 1988-06-22 1989-06-22 Single-use, self-blocking hypodermic syringe
EP19890907774 EP0383865A1 (en) 1988-06-22 1989-06-22 Single-use, self-blocking hypodermic syringe
AU38661/89A AU3866189A (en) 1988-06-22 1989-06-22 Single-use, self-blocking hypodermic syringe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8808363A FR2633186A1 (en) 1988-06-22 1988-06-22 SINGLE-USE HYPODERMIC SYRINGE

Publications (1)

Publication Number Publication Date
FR2633186A1 true FR2633186A1 (en) 1989-12-29

Family

ID=9367569

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8808363A Pending FR2633186A1 (en) 1988-06-22 1988-06-22 SINGLE-USE HYPODERMIC SYRINGE

Country Status (4)

Country Link
EP (1) EP0383865A1 (en)
AU (1) AU3866189A (en)
FR (1) FR2633186A1 (en)
WO (1) WO1989012476A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5090962A (en) * 1989-04-28 1992-02-25 Flp Enterprises, Inc. Non-reusable syringe
US5350367A (en) * 1990-11-06 1994-09-27 Sterling Winthrop Inc. Snap together hypodermic syringe holder
US5215524A (en) * 1992-07-14 1993-06-01 Vallelunga Anthony J Plunger for non-reuseable syringe
US5380295A (en) * 1992-12-14 1995-01-10 Mallinckrodt Medical, Inc. Delivery apparatus with mechanism preventing rearward movement of a piston disposed therein
US5352203A (en) * 1994-03-31 1994-10-04 Vallelunga Anthony J Aspirating non-reuseable syringe
PT1708770T (en) * 2004-01-28 2017-01-09 Unitract Syringe Pty Ltd One use syringe with ratchet on plunger and pawl on body
US11191903B2 (en) * 2014-04-14 2021-12-07 Swedish Orphan Biovitrum Ab (Publ) Syringe plunger rod

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8630016D0 (en) * 1986-12-16 1987-01-28 Id Tech Ltd Dental injection device
US4731068A (en) * 1987-05-01 1988-03-15 Hesse John E Non-reloadable syringe

Also Published As

Publication number Publication date
EP0383865A1 (en) 1990-08-29
AU3866189A (en) 1990-01-12
WO1989012476A1 (en) 1989-12-28

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