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FR2785813A1 - Cartridge injection instrument tip for needle with points at both ends has divergent axial channel and inclined threaded portion - Google Patents

Cartridge injection instrument tip for needle with points at both ends has divergent axial channel and inclined threaded portion Download PDF

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Publication number
FR2785813A1
FR2785813A1 FR9814430A FR9814430A FR2785813A1 FR 2785813 A1 FR2785813 A1 FR 2785813A1 FR 9814430 A FR9814430 A FR 9814430A FR 9814430 A FR9814430 A FR 9814430A FR 2785813 A1 FR2785813 A1 FR 2785813A1
Authority
FR
France
Prior art keywords
needle
cartridge
threaded portion
injection device
axial channel
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.)
Withdrawn
Application number
FR9814430A
Other languages
French (fr)
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.)
Anthogyr SA
Original Assignee
Anthogyr SA
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 Anthogyr SA filed Critical Anthogyr SA
Priority to FR9814430A priority Critical patent/FR2785813A1/en
Publication of FR2785813A1 publication Critical patent/FR2785813A1/en
Withdrawn legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details
    • A61M5/32Needles; 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
    • A61M5/34Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
    • A61M5/347Constructions for connecting the needle, e.g. to syringe nozzle or needle hub rotatable, e.g. bayonet or screw
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/24Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/24Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic
    • A61M2005/2403Ampoule inserted into the ampoule holder
    • A61M2005/2407Ampoule inserted into the ampoule holder from the rear
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details
    • A61M5/32Needles; 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
    • A61M5/34Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
    • A61M2005/341Constructions for connecting the needle, e.g. to syringe nozzle or needle hub angularly adjustable or angled away from the axis of the injector

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

An injection device for cartridges and double ended needles is new and comprises an axially divergent channel (7) to receive a needle (1) which is pointed at both ends. It also has a threaded section (8) which is inclined relative to the main axis of the instrument and designed to receive the needle holder (2). The threaded section has a spiral thread with one or more turns.

Description

La présente invention concerne un embout porte aiguille (4) pour dispositif d'injection permettant l'introduction, le cintrage et le vissage d'une aiguille bi pointe afin que la partie proximale de l'aiguille (3) forme un angle par rapport au dispositif d'injection. The present invention relates to a needle holder tip (4) for an injection device allowing the introduction, bending and screwing of a twin-point needle so that the proximal part of the needle (3) forms an angle relative to the injection device.

En outre cet embout porte aiguille (4) guide la partie distale de l'aiguille (1) pour qu'elle soit coaxiale à l'axe principal de la cartouche du produit à injecter. In addition, this needle holder tip (4) guides the distal part of the needle (1) so that it is coaxial with the main axis of the cartridge of the product to be injected.

On connaît bien un mode de réalisation utilisant un tube cintré dans lequel l'utilisateur fait coulisser la parie distale de l'aiguille. Ce système est décrit par le brevet n 2 535 206. L'inconvénient de ce système est que l'extrémité de la partie distale pointue de l'aiguille (1) frotte dans le tube, ce qui peut provoquer des arrachements de matière par l'aiguille et, par la suite des difficultés d'introduction ou mme le bouchage du trou de l'aiguille. De plus ce long tuyau est difficile à nettoyer. An embodiment is well known using a curved tube in which the user slides the distal portion of the needle. This system is described by patent No. 2,535,206. The disadvantage of this system is that the end of the pointed distal part of the needle (1) rubs into the tube, which can cause material to be torn off by the needle and, subsequently, difficulties in introducing or even blocking the hole in the needle. In addition, this long hose is difficult to clean.

Le dispositif de la présente invention sera mieux compris en se réfèrent aux figures : -La figure 1 représente en vue extérieure une aiguille dentaire bi pointe. The device of the present invention will be better understood with reference to the figures: FIG. 1 represents an external view of a twin-pointed dental needle.

-La figure 2 représente en coupe longitudinale le dispositif d'injection avec 1'embout porte aiguille (4) objet de ce brevet.FIG. 2 represents a longitudinal section of the injection device with the needle holder tip (4) which is the subject of this patent.

-La figure 3 représente en coupe longitudinale l'extrémité de l'embout porte aiguille (4).- Figure 3 shows in longitudinal section the end of the needle holder tip (4).

-La figure 4 représente en coupe longitudinale une seconde variante possible de l'extrémité de 1'embout porte aiguille (4).- Figure 4 shows in longitudinal section a second possible variant of the end of the needle holder tip (4).

-Les figures 5 ; 6 et 7 représentent en coupe longitudinale l'extrémité de 1'embout porte aiguille (4) et en vue extérieure l'aiguille bi pointe dans les différentes phases de montage sur l'embout. - Figures 5; 6 and 7 show in longitudinal section the end of the needle-holder end piece (4) and in external view the twin-point needle in the various stages of mounting on the end piece.

Cet embout porte aiguille (4) est constitué d'une partie dans laquelle on insère la cartouche du produit à injecter et prend place sur le dispositif d'injection (figure2). This needle holder tip (4) consists of a part into which the cartridge of the product to be injected is inserted and takes place on the injection device (Figure 2).

Le dispositif d'injection est en outre constitué d'un corps principal (6), d'un piston (5) coulissant par rapport au corps de la seringue. The injection device further comprises a main body (6), a piston (5) sliding relative to the body of the syringe.

Le mode de réalisation habituel de l'extrémité du porte aiguille (4) présente un pas de vis mâle permettant la solidarisation importante de l'aiguille (dont la base présente un filetage femelle) avec le corps de la seringue. The usual embodiment of the end of the needle holder (4) has a male thread allowing the significant attachment of the needle (the base of which has a female thread) with the body of the syringe.

Cette solidarisation importante, entre l'aiguille et la seringue est nécessaire en particulier du fait des injections intra osseuses et/ou dans les tissus durs afin d'éviter la désolidarisation de l'aiguille avec la seringue lors du retrait de l'ensemble par le manipulateur, à la fin de l'injection. This significant connection between the needle and the syringe is necessary in particular because of intra-bone injections and / or into the hard tissues in order to avoid the separation of the needle from the syringe during withdrawal of the assembly by the manipulator, at the end of the injection.

Cette solidarisation est aussi nécessaire, du fait de la forte pression qui existe à la base de l'aiguille lors de la poussée du produit injectable (un rapport de diamètre existe entre le trou du tube de 1'aiguille et la cartouche de produit injectable). This attachment is also necessary, because of the high pressure which exists at the base of the needle during the pushing of the injectable product (a diameter ratio exists between the hole of the tube of the needle and the cartridge of injectable product) .

Pour certaines injections, en particulier dans l'art dentaire, l'utilisateur rencontre un problème d'accès et d'encombrement lorsque l'aiguille et la seringue sont coaxiales : Il est alors fréquent que l'utilisateur soit amené à tordre la partie proximale (3) de l'aiguille pour qu'elle forme un angle par rapport à la seringue et pour pouvoir pratiquer l'injection. For certain injections, in particular in dentistry, the user encounters a problem of access and space when the needle and the syringe are coaxial: It is then frequent that the user is brought to twist the proximal part (3) the needle so that it forms an angle with respect to the syringe and in order to be able to inject.

Cela pose un problème de sécurité important car la main de l'utilisateur est alors très prt de l'extrémité perforante de l'aiguille. Cela pose également un autre problème important : Lors du cintrage de l'aiguille à la main il est possible d'obturer le trou de l'aiguille car le rayon de cintrage imposé est localement trop petit.  This poses a significant safety problem because the user's hand is then very close to the piercing end of the needle. This also poses another important problem: When bending the needle by hand it is possible to close the needle hole because the imposed bending radius is locally too small.

Les aiguilles utilisées dans l'art dentaire et vétérinaire se caractérisent par le fait que la base (2) (présentant dans le cas le plus général un filetage interne) est située entre les deux extrémités métalliques de l'aiguille proprement dite , dans laquelle circule le produit à injecter ; 1'une des extrémités (1), dite distale, perçant le bouchon caoutchouc de la cartouche contenant le produit à injecter, l'autre extrémité (3), dite proximale, entrant en contact avec le tissu nécessitant l'injection. The needles used in dental and veterinary art are characterized by the fact that the base (2) (in the most general case having an internal thread) is located between the two metal ends of the needle proper, in which circulates the product to be injected; One of the ends (1), called distal, piercing the rubber stopper of the cartridge containing the product to be injected, the other end (3), called proximal, coming into contact with the tissue requiring injection.

Dans le cas de l'utilisation d'une aiguille bi pointe, il est important que l'extrémité de la partie distale (1) de 1'aiguille soit coaxiale à la cartouche de produit :
D'une part pour éviter le problème de
fuite entre la cartouche et l'aiguille. En
effet, si la partie distale de l'aiguille
n'est pas parallèle à l'axe principal de la
cartouche de produit, la membrane avant de
cette cartouche ne se déforme pas
symétriquement.
When using a twin-pointed needle, it is important that the end of the distal part (1) of the needle is coaxial with the product cartridge:
On the one hand to avoid the problem of
leak between the cartridge and the needle. In
effect if the distal part of the needle
is not parallel to the main axis of the
product cartridge, the membrane before
this cartridge does not deform
symmetrically.

D'autre part pour permettre le
remplacement de la cartouche alors que
l'aiguille reste montée sur la seringue.
On the other hand to allow the
replacing the cartridge while
the needle remains mounted on the syringe.

La présente invention permet de remédier aux inconvénients et problèmes décrits ci-dessus. The present invention overcomes the drawbacks and problems described above.

Les moyens mis en oeuvre pour obtenir ces résultats sont les suivants :
-Dans un mode de réalisation privilégié de l'extrémité de l'embout porte aiguille (4), celui-ci comporte une partie filetée mâle (8), inclinée par rapport à 1'axe principal de la seringue. Un autre mode de réalisation pouvant tre constitué d'une rampe hélicoïdale à un ou plusieurs filets mâles (9) ou femelles pour la solidarisation et la désolidarisation rapide de l'aiguille par rotation. Un troisième mode de réalisation pouvant tre constitué d'une baïonnette male ou femelle.
The means used to obtain these results are as follows:
-In a preferred embodiment of the end of the needle holder tip (4), it has a male threaded part (8), inclined relative to the main axis of the syringe. Another embodiment can consist of a helical ramp with one or more male (9) or female threads for fastening and rapid separation of the needle by rotation. A third embodiment can consist of a male or female bayonet.

-L'embout porte aiguille comporte un alésage (7) en forme d'entonnoir, parallèle à l'axe principal de la seringue. Cet alésage, outre sa facilité de réalisation, permet de cintrer la partie distale de 1'aiguille (1) selon un rayon important. Cela évite le problème d'obturation de la canule de l'aiguille. L'extrémité de la section génératrice de cet alésage, coté cartouche d'injection, est parallèle à l'axe principal de cette cartouche. Cela évite le problème de fuite entre la cartouche et l'aiguille et autorise le remplacement de la cartouche alors que l'aiguille est restée en place. -The needle holder tip has a funnel-shaped bore (7) parallel to the main axis of the syringe. This bore, in addition to its ease of production, makes it possible to bend the distal part of the needle (1) over a large radius. This avoids the problem of blocking the cannula of the needle. The end of the generating section of this bore, on the injection cartridge side, is parallel to the main axis of this cartridge. This avoids the problem of leakage between the cartridge and the needle and allows the cartridge to be replaced while the needle has remained in place.

-L'embout porte aiguille (4) est monobloc pour réduire le coût de fabrication. Dans un autre mode de réalisation, l'embout porte aiguille (4) est réalisé en deux parties : une partie tubulaire destinée à recevoir la cartouche du produit à injecter et 1'embout porte aiguille proprement dit qui prend place à l'extrémité de la partie tubulaire. -The needle holder tip (4) is monobloc to reduce the manufacturing cost. In another embodiment, the needle holder tip (4) is made in two parts: a tubular part intended to receive the cartridge of the product to be injected and the needle holder tip proper which takes place at the end of the tubular part.

-L'embout porte aiguille (4) peut tre adapté sur tout type de seringues utilisant des cartouches d'injection et des aiguilles bi pointe : Avec auto aspiration ou sans auto aspiration, à harpon ou sans harpon, articulées ou non, démontables ou non, seringues pour injections intra ligamentaire, intra septales, liste non exhaustive. -The needle holder tip (4) can be adapted to any type of syringe using injection cartridges and twin-pointed needles: With self-aspiration or without self-aspiration, with harpoon or without harpoon, articulated or not, removable or not , syringes for intra ligamentary, intra septal injections, non-exhaustive list.

Mode opératoire :
-L'utilisateur met en place la cartouche de produit à injecter, puis met en place l'aiguille en l'introduisant dans l'orifice en forme d'entonnoir selon l'axe principal de la seringue (figure 5).
Procedure:
-The user sets up the cartridge of product to be injected, then sets up the needle by introducing it into the funnel-shaped orifice along the main axis of the syringe (Figure 5).

-Puis l'utilisateur courbe l'aiguille (figure 6).  -Then the user bends the needle (Figure 6).

-L'utilisateur visse l'aiguille sur l'embout porte aiguille (figure 7) et pratique 1'injection. -The user screws the needle onto the needle holder tip (Figure 7) and performs the injection.

Exemple de réalisation :
L'embout porte aiguille (4) est réalisé d'une seule pièce avec un alésage axial en forme d'entonnoir (7) et un filetage mâle (8) incliné par rapport à l'axe principal de la seringue. On pourra préférentiellement avoir un angle de 30 entre l'axe principal de la seringue et le filetage mâle de l'embout porte aiguille.
Example of realization:
The needle holder tip (4) is made in one piece with a funnel-shaped axial bore (7) and a male thread (8) inclined relative to the main axis of the syringe. It is preferable to have an angle of 30 between the main axis of the syringe and the male thread of the needle holder tip.

L'alésage axial en forme d'entonnoir est tel que la partie distale de l'aiguille, une fois montée sur l'embout porte aiguille, s'appuie tout le long de sa génératrice et que la partie distale de 1'aiguille (1) est guidée par cet alésage pour tre coaxiale à l'axe principal de la cartouche de produit à injecter.  The axial bore in the shape of a funnel is such that the distal part of the needle, once mounted on the needle holder tip, is supported along its generatrix and that the distal part of the needle (1 ) is guided by this bore so as to be coaxial with the main axis of the product cartridge to be injected.

Claims (3)

REVENDICATIONS 1) Dispositif d'injection pour cartouches et pour aiguilles bi pointes caractérisé en ce que l'embout porte aiguille (4) comporte d'une part un canal axial évasé (7) s'étendant sensiblement de la cartouche de produit injectable jusqu'à l'embase (2) de l'aiguille, et d'autre part une portion filetée (8) inclinée par rapport à l'axe principal du dispositif d'injection et destinée à recevoir l'embase de l'aiguille (2). CLAIMS 1) Injection device for cartridges and for twin-pointed needles characterized in that the needle-holder end piece (4) comprises on the one hand a flared axial channel (7) extending substantially from the cartridge of injectable product up to to the base (2) of the needle, and on the other hand a threaded portion (8) inclined relative to the main axis of the injection device and intended to receive the base of the needle (2) . 2) Dispositif d'injection pour cartouches et pour aiguilles bi pointes selon revendication 1) caractérisé par le fait que la portion filetée est une rampe hélicoïdale (9) à un ou plusieurs filets.2) injection device for cartridges and for bi-point needles according to claim 1) characterized in that the threaded portion is a helical ramp (9) with one or more threads. 3) Dispositif d'injection pour cartouches et pour aiguilles bi pointes selon revendication 1) ou 2) caractérisé par le fait qu'une génératrice externe de la partie distale de l'aiguille (1) montée sur l'embout porte aiguille (4) coïncide avec une génératrice du canal axial évasé de cet embout. 3) injection device for cartridges and for bi-point needles according to claim 1) or 2) characterized in that an external generator of the distal part of the needle (1) mounted on the needle holder tip (4) coincides with a generator of the flared axial channel of this nozzle.
FR9814430A 1998-11-12 1998-11-12 Cartridge injection instrument tip for needle with points at both ends has divergent axial channel and inclined threaded portion Withdrawn FR2785813A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9814430A FR2785813A1 (en) 1998-11-12 1998-11-12 Cartridge injection instrument tip for needle with points at both ends has divergent axial channel and inclined threaded portion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9814430A FR2785813A1 (en) 1998-11-12 1998-11-12 Cartridge injection instrument tip for needle with points at both ends has divergent axial channel and inclined threaded portion

Publications (1)

Publication Number Publication Date
FR2785813A1 true FR2785813A1 (en) 2000-05-19

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Application Number Title Priority Date Filing Date
FR9814430A Withdrawn FR2785813A1 (en) 1998-11-12 1998-11-12 Cartridge injection instrument tip for needle with points at both ends has divergent axial channel and inclined threaded portion

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Country Link
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2837735A1 (en) * 2002-04-02 2003-10-03 Prodonta TOOL HOLDER FOR BENDING DEFORMABLE TOOL
EP1266669A4 (en) * 2000-03-22 2004-12-08 Nipro Corp Medical syringe needle
WO2017012980A1 (en) * 2015-07-17 2017-01-26 Ivoclar Vivadent Ag Dental applicator
KR20230059438A (en) * 2021-10-26 2023-05-03 메디허브 주식회사 Ampoule cap for syringe
CN119792722A (en) * 2025-01-07 2025-04-11 江苏万海医疗器械有限公司 Needle self-checking pen-type injector and its working method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0129745A2 (en) * 1983-06-06 1985-01-02 Henke-Sass, Wolf GmbH Syringe
EP0148715A1 (en) * 1983-12-20 1985-07-17 Micro-Mega Dental syringe for intra-ligament injections
US4581022A (en) * 1982-11-03 1986-04-08 Micro-Mega S.A. Dental syringe
WO1996017640A1 (en) * 1994-12-09 1996-06-13 Medinfodent Ltd. Syringe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4581022A (en) * 1982-11-03 1986-04-08 Micro-Mega S.A. Dental syringe
EP0129745A2 (en) * 1983-06-06 1985-01-02 Henke-Sass, Wolf GmbH Syringe
EP0148715A1 (en) * 1983-12-20 1985-07-17 Micro-Mega Dental syringe for intra-ligament injections
WO1996017640A1 (en) * 1994-12-09 1996-06-13 Medinfodent Ltd. Syringe

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1266669A4 (en) * 2000-03-22 2004-12-08 Nipro Corp Medical syringe needle
US7077830B2 (en) 2000-03-22 2006-07-18 Nipro Corporation Medical syringe needle
FR2837735A1 (en) * 2002-04-02 2003-10-03 Prodonta TOOL HOLDER FOR BENDING DEFORMABLE TOOL
WO2003082387A3 (en) * 2002-04-02 2003-12-18 Prodonta S A Tool holder for flexibly-deformable tool
CN100425301C (en) * 2002-04-02 2008-10-15 大卫·魏尔 Clamp of bendable deformation tool
US7448868B2 (en) 2002-04-02 2008-11-11 David Weill Tool holder for flexibly-deformable tool
WO2017012980A1 (en) * 2015-07-17 2017-01-26 Ivoclar Vivadent Ag Dental applicator
EP3130309A1 (en) * 2015-07-17 2017-02-15 Ivoclar Vivadent AG Dental applicator
US11051911B2 (en) 2015-07-17 2021-07-06 Ivoclar Vivadent Ag Dental applicator
KR20230059438A (en) * 2021-10-26 2023-05-03 메디허브 주식회사 Ampoule cap for syringe
KR102696929B1 (en) 2021-10-26 2024-08-20 메디허브 주식회사 Ampoule cap for syringe
CN119792722A (en) * 2025-01-07 2025-04-11 江苏万海医疗器械有限公司 Needle self-checking pen-type injector and its working method

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