WO1989012476A1 - Single-use, self-blocking hypodermic syringe - Google Patents

Single-use, self-blocking hypodermic syringe Download PDF

Info

Publication number
WO1989012476A1
WO1989012476A1 PCT/FR1989/000319 FR8900319W WO8912476A1 WO 1989012476 A1 WO1989012476 A1 WO 1989012476A1 FR 8900319 W FR8900319 W FR 8900319W WO 8912476 A1 WO8912476 A1 WO 8912476A1
Authority
WO
WIPO (PCT)
Prior art keywords
syringe
piston
detail
teeth
mark
Prior art date
Application number
PCT/FR1989/000319
Other languages
French (fr)
Inventor
Claude Favard
Original Assignee
Claude Favard
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 Claude Favard filed Critical Claude Favard
Publication of WO1989012476A1 publication Critical patent/WO1989012476A1/en

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

Definitions

  • the present invention relates to a hypodermic syringe, the use of which is made impossible after a first use.
  • 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 drive device on translation l has each qcarlgmgnt in the direction A as r epi deentd Fig.1.
  • the rear part of the syringe is equipped with a mud tab device whose function is to immobilize the piston.
  • device is made integral with the syringe body. When using the syringe the effect of this device is canceled by a ring holding the locking tabs apart.
  • the needle is made removable by a clipping device.
  • the needle can be made removable by overmolding.
  • the devices for driving and blocking the piston are produced in the form of racks molded on the body of the piston.
  • the gear devices can; be produced in the form of; metal parts, for example beryllium bronzo, overmolded on the spacer ring and on the locking device.
  • Figure 1 shows in section the disposable syringe.
  • Figure 2 shows in section a variant of this syringe.
  • Figure 3 shows the piston.
  • Figure 4 shows the locking device
  • Figure 5 shows the spacer ring.
  • the syringe shown in Figure 1 has a syringe body.
  • the needle is made non-removable by gluing, over-clipping.
  • the piston shown in Figure 3 is made of soft plastic
  • the body of the piston consists of 2 ribs, the section of which is a cross. 2 branches of this cross have over their entire length l rack made up of teeth with a pitch of the order of 1.5 mm. The of these teeth is such that the gear occurs only in 1 senles two other branches of this cross have 1 rack opposite to the first.
  • 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-sound welding.
  • the tongues mounted so that, at rest, the teeth are engaged in the rack of the piston: their section and the mat used for their manufacture allows the tooth to be released by pressure on the tongue.
  • 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.
  • This shoulder is such that the tongues of the blocking device are released after a stroke of approximately 2.5 mm.
  • the seri ngue sel on i nventi on is part i cially i ndicated to combat the spread of S IDA and hepatitis B by the use of contaminated seri ngues.

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 impossibl e après une première util isation. La seringue suivant l ' invention présente un dispositif de clipsage de l 'aiguil l e empêchant le réemploi de celle-ci sur autre seringue. Le piston est pourvu d'un dispositif entraina on translation l a haque l' qcarlgmgnt dans le sens A tel que r epi deentd Fig.1. The present invention relates to a hypodermic syringe, the use of which is made impossible after a first use. 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 drive device on translation l has each qcarlgmgnt in the direction A as r epi deentd Fig.1.
La partie arrière de la seringue est équipée d'un dispositif mud de languettes dont la fonction est d'immobiliser le piston. 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 mud tab device whose function is to immobilize the piston. device is made integral with the syringe body. 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 l piston. Lorsqu il commence à presser le piston, celui-ci entra la bague d' écartemont celle ci libère les languettes de clipsage. Dès lors, il est impossible do tirer le piston et donc de rempli la seringue.When filling the syringe, the user pulls the plunger. When it starts to press the piston, it enters the spacer ring as it releases the clip tabs. Therefore, it is impossible to pull the plunger and therefore to 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 etre rendue indémontable par surmoulage.Alternatively, the needle can be made removable by overmolding.
Selon une forme de réalisation préférentielle, les dispositifs d' entrainement et de blocage du piston sont réalisés sous forme de crémaillères moulées sur le corps du piston.According to a preferred embodiment, the devices for driving and blocking the piston are produced in the form of racks molded on the body of the piston.
Selon une variante, les dispositifs d' engrenage peuvent; ètre réalisés sous for me de; parties métalliques, par exemple bronzo au bérilium, surmoulées sur la bague d' écartement et sur le dispositif de blocage.Alternatively, the gear devices can; be produced in the form of; metal parts, for example beryllium bronzo, 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. La figure 3 représente le piston.Figure 2 shows in section a variant of this syringe. Figure 3 shows the piston.
La figure 4 représente le dispositif de blocage.Figure 4 shows the locking device.
La figure 5 représente la bague d' écartément. 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 , surmou clipsage. le piston représenté figure 3 est réalisé en matière plastique mol Le corps du piston est constitué de 2 nervures dont la section fur une croix. 2 branches de cette croix présentent sur toute leur longueur l crémaillère constituée de dents au pas de l'ordre de 1,5 mm. Le de ces dents est tel que l'engrenage ne se produit que dans 1 senles deux autres branches de cette croix présentent 1 crémaillèr sens inverse à la première. A l'extrémité apposée in l'aiguille se trouve un dispositif de bis repère (3) figure 1 représenté figure 4 .The syringe shown in Figure 1 has a syringe body. The needle is made non-removable by gluing, over-clipping. the piston shown in Figure 3 is made of soft plastic The body of the piston consists of 2 ribs, the section of which is a cross. 2 branches of this cross have over their entire length l rack made up of teeth with a pitch of the order of 1.5 mm. The of these teeth is such that the gear occurs only in 1 senles two other branches of this cross have 1 rack opposite to the first. At the end affixed in the needle there is a bis reference device (3) in Figure 1 shown in Figure 4.
Ce dispositif de blocage est réalisé en 2 demi pièces moulées en forme de cylindre présentant à une extrémité un épaulement desti le rendre solidaire du corps de la seringue par collage, thermo soudure ou soudure ultra-sonigue.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-sound welding.
Sur les parois intérieures du cylindre sont moulées 2 languett munies de dents engrenant sur l'une des crémaillères du piston (crémaillère engrenant dans le sens B tel que représenté figureOn the inside walls of the cylinder are molded 2 tongues fitted with teeth meshing on one of the racks of the piston (rack meshing in direction B as shown in figure
Les languettes montées de telle sorte que, au repos, les dents sor engagées dans la crémaillère du piston : leur section et le mate utilisé pour leur fabrication permet de dégager la dent par pressure sur la languette.The tongues mounted so that, at rest, the teeth are engaged in the rack of the piston: their section and the mat used for their manufacture allows the tooth to be released by pressure on the tongue.
Une bague d'écartement repère 4 figure 1 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 dispotif des blocage sont libérées après u ne 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.
A l'intérieur de la bague d'écartement ses trouvent des languettes élastiques munies de dents engrenant dans le sens A tel que représent figure 1.Inside the spacer ring there are elastic tongues provided with teeth meshing in direction A as shown in FIG. 1.
La seri ngue sel on l ' i nventi on est parti cul i èrement i ndi quée pour lutter contre l a propagati on du S IDA et de l ' hépati te B par l ' utilisation de seri ngues contami nées . The seri ngue sel on i nventi on is part i cially i ndicated to combat the spread of S IDA and hepatitis B by the use of contaminated seri ngues.

Claims

REVENDICATIONS
1) La seringue hypodermique à usage unique est caractérisée en ce que son piston (repère 5 fig.1) présente sur sa longueur deux crémaillêres engrenant pour l 'une dans le sens de la pression (repère A fig.3) et pour l 'autre dans le sens de la traction (repère B fig.3); en ce que le corps de la seringue (repère 1 fig 1 ) présente à son extrémité opposée à l'aiguille un dispositif de blocage (repère 3 fig.1) 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 cylindrese trouvent des languettes flexibles (détail D fig.1) pourvues de dents (détail E fig.1) engtenant sur l'une des crémaillères du piston (détail B fig.3); en ce que une bague d'écartement (repère 4 fig.1) destinée à éloigner les dents a p p artenant au dispositif de blocage de la crémaillère comporte un épaulement introduit entre les languettes flexibles du dispositif de blocage, cette bague d'écartement présentant elle mème des languettes flexibles (détail D Fig.5 ) pourvues de dents (détail G fig 5) engrenant avec la crémaillère dans le sens de la pression (sens A fig.1 )1) The single-use hypodermic syringe is characterized in that its piston (item 5 fig.1) has two racks along its length, one engaging in the direction of pressure (item A fig.3) and one other in the direction of traction (mark B fig.3); in that the body of the syringe (mark 1 fig 1) has at its end opposite the needle a locking device (mark 3 fig.1) consisting of a cylindrical part penetrating inside the body of the syringe , made integral of it; in that on the internal walls of this cylinder there are flexible tongues (detail D fig.1) provided with teeth (detail E fig.1) attached to one of the racks of the piston (detail B fig.3); in that a spacer ring (mark 4 fig. 1) intended to distance the app teeth attached to the blocking device of the rack has a shoulder inserted between the flexible tongues of the blocking device, this spacer ring having the same flexible tongues (detail D Fig. 5) provided with teeth (detail G fig 5) meshing with the rack in the direction of pressure (direction A fig. 1)
2)Dispositif selon la revendication 1 caractérisé en ce que le corps du piston a une section en croix présentant sur toute la longueur des génératrices 2 crémaillères de sens inversé réalisées par moulage.2) Device according to claim 1 characterized in that the piston body has a cross section having over the entire length of the generators 2 reverse racks made by molding.
3)Dipositif selon les revendications 1 et 2 carctèrisé en ce que les dents des crémaillères ont un profil non symétrique présentant dans un sens une rampe inclinée (angle αFig. 3' ) permettant le 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) Device 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 (angle αFig. 3 ') allowing the sliding of the tooth by moving away from the flexible tongue and in the other direction a wall perpendicular to the longitudinal axis of the piston.
4)Dispositif selon la revendication 1 caractérisé en ce que le dispositif de blocage est réalisé en 2 pièces moulées.4) Device according to claim 1 characterized in that the blocking device is made of 2 molded parts.
5)Dispositif selon la revendication 1 caractérisé en ce que la bague d'écartement est réalisée en 2 pièces moulées.5) Device according to claim 1 characterized in that the spacer ring is made of 2 molded parts.
6)dispositif selon l 'une quelconque des revendications précé-dentes caractérisé en ce que l 'aiguille est rendue indémon-table par clipsage sur l 'embout de la seringue tel que représenté fig 2. 6) Device according to any one of the preceding claims, characterized in that the needle is made free from interference by clipping onto the tip of the syringe as shown in fig 2.
PCT/FR1989/000319 1988-06-22 1989-06-22 Single-use, self-blocking hypodermic syringe WO1989012476A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR88/08363 1988-06-22
FR8808363A FR2633186A1 (en) 1988-06-22 1988-06-22 SINGLE-USE HYPODERMIC SYRINGE

Publications (1)

Publication Number Publication Date
WO1989012476A1 true WO1989012476A1 (en) 1989-12-28

Family

ID=9367569

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR1989/000319 WO1989012476A1 (en) 1988-06-22 1989-06-22 Single-use, self-blocking hypodermic syringe

Country Status (4)

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

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0395211A2 (en) * 1989-04-28 1990-10-31 Maurice J. Landry, Jr. Non-reusable syringe
EP0485028A1 (en) * 1990-11-06 1992-05-13 Sterling Winthrop Inc. Snap together hypodermic syringe holder
US5215524A (en) * 1992-07-14 1993-06-01 Vallelunga Anthony J Plunger for non-reuseable syringe
US5352203A (en) * 1994-03-31 1994-10-04 Vallelunga Anthony J Aspirating non-reuseable syringe
EP0713401A4 (en) * 1992-12-14 1996-01-11 Mallinckrodt Medical Inc Mechanism preventing rearward movement of piston syringe
WO2005072797A1 (en) * 2004-01-28 2005-08-11 Unitract Syringe Pty Ltd One use syringe with ratchet on plunger and pawl on body
WO2015158707A1 (en) * 2014-04-14 2015-10-22 Swedish Orphan Biovitrum Ab (Publ) Syringe plunger rod

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4731068A (en) * 1987-05-01 1988-03-15 Hesse John E Non-reloadable syringe
EP0272035A2 (en) * 1986-12-16 1988-06-22 National Research Development Corporation Injection device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0272035A2 (en) * 1986-12-16 1988-06-22 National Research Development Corporation Injection device
US4731068A (en) * 1987-05-01 1988-03-15 Hesse John E Non-reloadable syringe

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0395211A2 (en) * 1989-04-28 1990-10-31 Maurice J. Landry, Jr. Non-reusable syringe
EP0395211A3 (en) * 1989-04-28 1991-03-13 Maurice J. Landry, Jr. Non-reusable syringe
US5090962A (en) * 1989-04-28 1992-02-25 Flp Enterprises, Inc. Non-reusable syringe
EP0485028A1 (en) * 1990-11-06 1992-05-13 Sterling Winthrop Inc. Snap together hypodermic syringe holder
US5215524A (en) * 1992-07-14 1993-06-01 Vallelunga Anthony J Plunger for non-reuseable syringe
EP0713401A4 (en) * 1992-12-14 1996-01-11 Mallinckrodt Medical Inc Mechanism preventing rearward movement of piston syringe
EP0713401A1 (en) * 1992-12-14 1996-05-29 Mallinckrodt Medical, Inc. Mechanism preventing rearward movement of piston syringe
US5352203A (en) * 1994-03-31 1994-10-04 Vallelunga Anthony J Aspirating non-reuseable syringe
WO2005072797A1 (en) * 2004-01-28 2005-08-11 Unitract Syringe Pty Ltd One use syringe with ratchet on plunger and pawl on body
AU2005209013B2 (en) * 2004-01-28 2009-11-26 Unitract Syringe Pty Ltd One use syringe with ratchet on plunger and pawl on body
US8052654B2 (en) 2004-01-28 2011-11-08 Unitract Syringe Pty Ltd. Automatically disabled syringe
WO2015158707A1 (en) * 2014-04-14 2015-10-22 Swedish Orphan Biovitrum Ab (Publ) Syringe plunger rod
RU2698216C2 (en) * 2014-04-14 2019-08-23 Свидиш Орфан Биовитрум Аб (Пабл) Syringe plunger rod
AU2015248899B2 (en) * 2014-04-14 2019-11-28 Swedish Orphan Biovitrum Ab (Publ) Syringe plunger rod
EP3131606B1 (en) * 2014-04-14 2021-05-19 Swedish Orphan Biovitrum AB (publ) Syringe plunger rod
US11191903B2 (en) 2014-04-14 2021-12-07 Swedish Orphan Biovitrum Ab (Publ) Syringe plunger rod

Also Published As

Publication number Publication date
AU3866189A (en) 1990-01-12
EP0383865A1 (en) 1990-08-29
FR2633186A1 (en) 1989-12-29

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