FR2673844A1 - Syringe with incorporated retractable needle - Google Patents

Syringe with incorporated retractable needle Download PDF

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Publication number
FR2673844A1
FR2673844A1 FR9103467A FR9103467A FR2673844A1 FR 2673844 A1 FR2673844 A1 FR 2673844A1 FR 9103467 A FR9103467 A FR 9103467A FR 9103467 A FR9103467 A FR 9103467A FR 2673844 A1 FR2673844 A1 FR 2673844A1
Authority
FR
France
Prior art keywords
needle
syringe
needle holder
holder
housing
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
FR9103467A
Other languages
French (fr)
Inventor
Gherrak Elie
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 FR9103467A priority Critical patent/FR2673844A1/en
Publication of FR2673844A1 publication Critical patent/FR2673844A1/en
Pending legal-status Critical Current

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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
    • A61M5/32—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
    • A61M5/3234—Fully automatic needle retraction, i.e. in which triggering of the needle does not require a deliberate action by the user
    • 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
    • A61M5/3221—Constructional features thereof, e.g. to improve manipulation or functioning
    • A61M2005/3223—Means impeding or disabling repositioning of used needles at the syringe nozzle
    • A61M2005/3224—Means to disalign the needle tip and syringe nozzle
    • 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
    • A61M5/3234—Fully automatic needle retraction, i.e. in which triggering of the needle does not require a deliberate action by the user
    • A61M2005/3241—Needle retraction energy is accumulated inside of a hollow plunger 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
    • A61M5/50—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

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (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 invention relates to a safety device inside a medical syringe, which device makes the syringe safe to use by means of its incorporated needle, the immediate retraction of the needle in the syringe at the end of the injection, and the impossibility of re-use. A plunger (5) moving in a conduit (2) makes it possible, by means of a complex set of anchoring elements (studs and notches) (7) and (8), then (18) and (19), then (16) and (17), then (18) and (20), to withdraw an incorporated needle (15) without touching it, then to retract it as soon as the injection is complete, directly into the body of the syringe (11). The re-use of the syringe is made impossible by the locking of the needle-holder support (9) to the needle holder (13), and by the off-centring of the needle (15) after retraction in the syringe (11). The device according to the invention is of particular interest in the treatment of contagious diseases.

Description

DESCRIPTION
La présente invention concerne un dispositif pour rnedre rétractable dés la fin de l'injection l'aiquille intégrée d'une seringue médicale à usage unique
Le dispositif selon l'invention en fait une seringue de grande sécurité l'aiguille intégrée évite les manipulations de celle-ci précédant habituellemnt l'injection; et sa réabsorption automatique et définitive à l'intérieur de la seringue dès la fin de l'injection supprime tout risque de contagion par piqûre puisque l'aiguille potentiellement infectée par le contact de la chair du malade passe directement de la partie piquée dans le corps de la seringue de manière irréversible.DESCRIPTION
The present invention relates to a device to retract retractable from the end of injection the integrated needle of a disposable medical syringe
The device according to the invention makes it a very safe syringe the integrated needle avoids the manipulations of the latter preceding the injection usually; and its automatic and final reabsorption inside the syringe at the end of the injection eliminates any risk of contagion by injection since the needle potentially infected by the contact of the patient's flesh passes directly from the bitten part in the body of the syringe irreversibly.

Le dispositif selon l'invention comporte un corps de seringue dont l'intérieur se compose d'un piston étanche mis en mouvement par un conduit tubulaire fendu, ayant en son centre un support de porte aiguille surmonté d'un porte-aiguille et de son aiguille L'utilisateur n'aura que quelques monoeuvres simples à effectuer pour que la mise en place puis la réabsorption de l'aiguille à l'intérieur de la seringue à la fin de l'injection se fassent automatiquement.The device according to the invention comprises a syringe body the interior of which consists of a sealed piston set in motion by a split tubular conduit, having in its center a needle holder support surmounted by a needle holder and its needle The user will have only a few simple operations to perform so that the insertion and then reabsorption of the needle inside the syringe at the end of the injection are done automatically.

L'utilisateur, en référence à ces dessins, tire sur le poussoir (1) solidaire du conduit (2), lequel coulisse dans les deux fentes (3) sur la barre de fixation (4)
A l'extrémité de ce conduit, et faisant corps avec fui, est i installé un pi piston (5) creux au centre et muni d un joint d'étanchéité (6) En fin de course, la base intérieure du piston (7) s'encastre sur la saillie (8) du support du porte-aiguille (9)
La pouss#ee vers le haut du poussoir (1) solidaire du conduit (2) et du piston (5) entraîne le support du porte-aiquille (9) chapeauté du porte-aiguille (13) auquel est scéllée l'aiguille (15), vers l'orifice (10) du corps de la seringue (11).The user, with reference to these drawings, pulls on the pusher (1) integral with the conduit (2), which slides in the two slots (3) on the fixing bar (4)
At the end of this conduit, and forming a body with leakage, is installed a pi piston (5) hollow in the center and provided with a seal (6) At the end of the race, the interior base of the piston (7) fits on the projection (8) of the needle holder support (9)
The push up of the pusher (1) integral with the conduit (2) and the piston (5) drives the support of the needle holder (9) capped with the needle holder (13) to which the needle (15) is sealed ), towards the orifice (10) of the syringe body (11).

Par une légère pression la saillie (12) du porte-aiguille (13) s'engage dans le logement (14) situé à la base interne de l'orifice (10) de la seringue (11): l'aiguille (15) est en position d'utilisation (FIG. 10).By a slight pressure the projection (12) of the needle holder (13) engages in the housing (14) located at the internal base of the orifice (10) of the syringe (11): the needle (15) is in the use position (FIG. 10).

Quand l'utilisateur tire le poussoir (1) vers le bas, l'ensemble porte-aiguille (13) et aiguille (15) se libère du support du porte-aiguille (9). Le support du porte-aigulle (9) reste dans sa position grâce à la saillie (8) retenue dans le logement de transport (7) du support du porte-aiguille permettant l'aspiration du sérum dans la seringue (FIG .9). When the user pulls the plunger (1) downwards, the needle holder (13) and needle (15) assembly is released from the holder of the needle holder (9). The support of the needle holder (9) remains in its position thanks to the projection (8) retained in the transport housing (7) of the support of the needle holder allowing the aspiration of the serum into the syringe (FIG. 9).

L'injection se fait a la manière classique. A la fin de l'injenction, une pression plus forte est nécessaire pour, d'une part, accrocher le support du porte-aiguille (9) par ses ergots (16) dans le logement (17) intérieur du porte-aiguille (13), pour, d'autre part, faire passer, du logement de l'embout de centrage et de maintien (19) du porte-aiguille (13) à son longement de retrait (20), l'embout de centrage (18} du support du porte-aiguille (9); et pour, enfin, écraser le joint d'étanchéité (6) contre le haut de la seringue (i I).La mise en butée de l'embout de centrage (18) dans le logement de l'embout de retrait (20) permet le dégagement de la saillie de transport (8) du support du porte-aiguille (9) hors du logement de transport (7) du porte-aiguille (13).The injection is done in the conventional way. At the end of the injection, a higher pressure is necessary to, on the one hand, hook the support of the needle holder (9) by its pins (16) in the housing (17) inside the needle holder (13 ), on the other hand, to pass from the housing of the centering and retaining end piece (19) of the needle holder (13) to its withdrawal lengthening (20), the centering end piece (18} of the holder of the needle holder (9); and to finally crush the seal (6) against the top of the syringe (i I). The abutment of the centering tip (18) in the housing of the withdrawal end piece (20) allows the transport projection (8) of the needle holder support (9) to be released from the transport housing (7) of the needle holder (13).

Ces trois efets conjugués permettent à l'élastique excentré (21), fixé, d'une part, dans le gobelet femelle (22) et, d'autre part, dans le gobelet mâle (23) du support du porte-aiguille (9), de tirer l'ensemble support du porte-aiguille (9), porte-aiguille (13) et aiguille (15) dans le fond du conduit (2) de la seringue (11) (FIG. 11)
La réutilisation de la seringue est désormais impossible:: -le gobelet male (23) n'est plus dans son logement - l'aiguille (15) n'est plus dans son axe d d'attente - les ergots de retrait (17) deviennent auto-bloquants - l'élastique (21) détendu, fixé au gobelet mâle (23), retient le support du
porte-aiguille (9), le porte-aiguille (J3) et l'aiguile (15) - Si, malgré touts l'utilisateur tire le poussoir (1) vers lui, l'aiguille (15)
viendra heurter l'intérieur du piston (5) (FIG. 1 1}. These three combined effects allow the eccentric elastic (21), fixed, on the one hand, in the female cup (22) and, on the other hand, in the male cup (23) of the needle holder support (9 ), pull the needle holder support assembly (9), needle holder (13) and needle (15) into the bottom of the syringe tube (2) (11) (FIG. 11)
The reuse of the syringe is now impossible: -the male cup (23) is no longer in its housing - the needle (15) is no longer in its waiting axis - the withdrawal lugs (17) become self-locking - the elastic (21) relaxed, fixed to the male cup (23), retains the support of the
needle holder (9), the needle holder (J3) and the needle (15) - If, despite everything, the user pulls the plunger (1) towards him, the needle (15)
will strike the inside of the piston (5) (FIG. 1 1}.

Selon des modes particuliers de réalisation: - un ressort remplace éventuellement l'él asti que - une clavette d'arrêt limitant la course du piston (s) pour l'enclenchement
du porte-aiguille (13) sur l'orifice (10) de la seringue, est éventuellement
montée sur le conduit (2) tubulaire du poussoir(1) - l'aiguille de perçage des flacons de serum est éventuellement montée sur
l'embout extérieur de la seringue, ainsi que son fourreau de protection. According to particular embodiments: - a spring possibly replaces the elastic - a stop key limiting the stroke of the piston (s) for engagement
of the needle holder (13) on the orifice (10) of the syringe, is possibly
mounted on the tubular conduit (2) of the pusher (1) - the piercing needle for the serum bottles is optionally mounted on
the outer tip of the syringe, as well as its protective sheath.

Claims (8)

REYENDICATIONREYENDICATION 1) Dispositif constituant une seringue e aiguille rétractile, caractérisé en ce qu'il comporte un corps de seringue (119 dans lequel coulisse le conduit (2) solidaire, à une extrémité, du bouton-poussoir (1), et à l'autre extrémité, du piston (5).1) Device constituting a syringe and retractable needle, characterized in that it comprises a syringe body (119 in which slides the duct (2) secured, at one end, to the push button (1), and to the other end of the piston (5). 2) Dispositif selon la revendication l, caractérisé en ce que le corps de la seringue (11) est équipé de la traverse (4) sur laquelle est fixé le gobelet femelle (22).2) Device according to claim l, characterized in that the body of the syringe (11) is equipped with the crosspiece (4) on which is fixed the female cup (22). 3) Dispositif selon la revendication 9 caracténsé en ce que le gobelet femelle ( sert de logement au support du porte-aiguille (22) (9) et a l'élastique de retrait (21). 3) Device according to claim 9 characterized in that the female cup (serves as a housing for the support of the needle holder (22) (9) and has the withdrawal elastic (21). 4) Dispositif selon les revendications 1 et 3 caractérisé en ce que le piston (5), creux en son centre, assure l'emboîtement du support du porte-aiguille (g) par la saillie (8) de transport du support du porte-aiguille (9), dans le logement (7) de transport du support du porte-aiguille (9), situé a la base inférieure du piston (5).4) Device according to claims 1 and 3 characterized in that the piston (5), hollow in its center, ensures the interlocking of the needle holder support (g) by the projection (8) for transporting the holder holder needle (9), in the housing (7) for transporting the holder of the needle holder (9), located at the lower base of the piston (5). 5) Dispositif selon les revendications 3, 4 caractérisé en ce que la bague porte-aiguille ( sur le support porte-aiguille (9) solidaire de l'aiguille (15) est retenue a la base intérieure de l'orifice ( de la seringue dans le logement (14) de la bague porte-aiguille.5) Device according to claims 3, 4 characterized in that the needle holder ring (on the needle holder support (9) integral with the needle (15) is retained at the inner base of the orifice (of the syringe in the housing (14) of the needle holder ring. 6) Dispositif selon l'une quelconque des revendications 1, 3, 4, caractérisé en ce que, en position d'injenction, le support du porte-aiguille (9) se détache du porte-aiguille (13) et reste emboîté au piston (5) assurant l'étanchéité de celui-ci.6) Device according to any one of claims 1, 3, 4, characterized in that, in the injection position, the support of the needle holder (9) is detached from the needle holder (13) and remains fitted to the piston (5) ensuring the sealing thereof. 7) Dispositif selon l'une quelconque revendications 1, 2, 3, 4, 5 et 6 caractérisé en ce que, lors de la fin de l'injection, par une pression plus forte sur le poussoir (1), le support du porte-aiguille (9) s'emboîte sur le porte-aiguille (13) et s'accroche par les ergots de retrait (16) dans le logement (17) de retrait du porte-aiguille (13). L'embout de centrage (18 > passera du logement (19) d'embout de centrage et de maintien au logement (20) de l'embout de retrait. Cette pression libère également, dans un deuxième temps, les saillies (8) de transport du support du porte-aiguille ( de leur logement (7) de transport du support du porte-aiguille (gr par la mise en butée de l'embout de centrage. Le support du porte-aiguille (9), enclavé au porte-aiguille (13) et son aiguille (15) > est tire vers le fond du conduit (12) par l'élastique (21) sous tension fixé a la fois au gobelet femelle (22) et au gobelet male (23)7) Device according to any one of claims 1, 2, 3, 4, 5 and 6 characterized in that, at the end of the injection, by a stronger pressure on the pusher (1), the support of the door - needle (9) fits on the needle holder (13) and is hooked by the withdrawal lugs (16) in the housing (17) for removing the needle holder (13). The centering end piece (18> will pass from the housing (19) for the centering and retaining end piece to the housing (20) for the withdrawal end piece. This pressure also releases, in a second step, the projections (8) from transport of the needle holder support (from their housing (7) transport of the needle holder support (gr by the abutment of the centering tip. The needle holder support (9), enclosed in the holder needle (13) and its needle (15)> is pulled towards the bottom of the conduit (12) by the elastic band (21) under tension fixed both to the female cup (22) and to the male cup (23) 8) Dispositif selon l'une quelconque revendications 1, 2, 3, 4, 5, 6 et 7, caractérisé en ce que l'aiguille de perçage du ou des flacons, ainsi que son fourreau, sont éventuellement montés sur l'extérieur de l'orifice de la seringue. 8) Device according to any one of claims 1, 2, 3, 4, 5, 6 and 7, characterized in that the piercing needle of the bottle or bottles, as well as its sheath, are optionally mounted on the outside of the syringe hole.
FR9103467A 1991-03-15 1991-03-15 Syringe with incorporated retractable needle Pending FR2673844A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9103467A FR2673844A1 (en) 1991-03-15 1991-03-15 Syringe with incorporated retractable needle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9103467A FR2673844A1 (en) 1991-03-15 1991-03-15 Syringe with incorporated retractable needle

Publications (1)

Publication Number Publication Date
FR2673844A1 true FR2673844A1 (en) 1992-09-18

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Application Number Title Priority Date Filing Date
FR9103467A Pending FR2673844A1 (en) 1991-03-15 1991-03-15 Syringe with incorporated retractable needle

Country Status (1)

Country Link
FR (1) FR2673844A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001041843A1 (en) * 1999-12-13 2001-06-14 Futura Medical Technologies, Inc. Syringe with retractable needle assembly
EP1549365A2 (en) * 2002-09-16 2005-07-06 Futura Medical Technologies, Inc. Syringe with retractable needle assembly

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2722215A (en) * 1954-04-27 1955-11-01 Dahlgren Stig-Ake Spring-actuated medical syringe
US4874382A (en) * 1987-10-15 1989-10-17 Servetus Partnership Safety syringe
WO1990006146A1 (en) * 1988-12-07 1990-06-14 Gaetano Nacci Syringe which automatically makes the hypodermic needle harmless after use
US4950241A (en) * 1988-12-27 1990-08-21 Sherwood Medical Company Disposable syringe
US4955870A (en) * 1988-08-23 1990-09-11 Ridderheim Kristen A Hypodermic syringe with retractable needle
WO1990015634A1 (en) * 1989-06-12 1990-12-27 Grape Aps An injection syringe

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2722215A (en) * 1954-04-27 1955-11-01 Dahlgren Stig-Ake Spring-actuated medical syringe
US4874382A (en) * 1987-10-15 1989-10-17 Servetus Partnership Safety syringe
US4955870A (en) * 1988-08-23 1990-09-11 Ridderheim Kristen A Hypodermic syringe with retractable needle
WO1990006146A1 (en) * 1988-12-07 1990-06-14 Gaetano Nacci Syringe which automatically makes the hypodermic needle harmless after use
US4950241A (en) * 1988-12-27 1990-08-21 Sherwood Medical Company Disposable syringe
WO1990015634A1 (en) * 1989-06-12 1990-12-27 Grape Aps An injection syringe

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001041843A1 (en) * 1999-12-13 2001-06-14 Futura Medical Technologies, Inc. Syringe with retractable needle assembly
EP1239900A2 (en) * 1999-12-13 2002-09-18 Futura Medical Technologies Inc. Syringe with retractable needle assembly
EP1239900A4 (en) * 1999-12-13 2007-06-06 Futura Medical Technologies Inc Syringe with retractable needle assembly
EP1549365A2 (en) * 2002-09-16 2005-07-06 Futura Medical Technologies, Inc. Syringe with retractable needle assembly
EP1549365A4 (en) * 2002-09-16 2006-08-23 Futura Medical Technologies Inc Syringe with retractable needle assembly
CN100448491C (en) * 2002-09-16 2009-01-07 未来医疗技术公司 Syringe with retractable needle assembly

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