FR2762790A1 - VARIABLE NEEDLE LENGTH INJECTION SYSTEM - Google Patents
VARIABLE NEEDLE LENGTH INJECTION SYSTEM Download PDFInfo
- Publication number
- FR2762790A1 FR2762790A1 FR9705786A FR9705786A FR2762790A1 FR 2762790 A1 FR2762790 A1 FR 2762790A1 FR 9705786 A FR9705786 A FR 9705786A FR 9705786 A FR9705786 A FR 9705786A FR 2762790 A1 FR2762790 A1 FR 2762790A1
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- FR
- France
- Prior art keywords
- needle
- injection system
- ring
- support
- piston
- Prior art date
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- Granted
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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
- A61M5/24—Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic
- A61M5/2422—Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic using emptying means to expel or eject media, e.g. pistons, deformation of the ampoule, or telescoping of the ampoule
- A61M5/2429—Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic using emptying means to expel or eject media, e.g. pistons, deformation of the ampoule, or telescoping of the ampoule by telescoping of ampoules or carpules with the syringe body
-
- 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
- A61M5/3202—Devices for protection of the needle before use, e.g. caps
-
- 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
- A61M5/32—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
- A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
-
- 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
- A61M5/46—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 controlling depth of insertion
-
- 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
- A61M5/5086—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 for indicating if defective, used, tampered with or unsterile
Landscapes
- 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
Description
DESCRIPTION
La présente invention est relative à système d'injection prérempli de produits pharmaceutiques
qui permet de régler la longueur utile de l'aiguille. Depuis une position sortie extrême, jusqu'à
une position escamotée, L'aiguille pourra adopter toutes les longueurs intermédiaires au gré
des besoins de l'utilisateur.DESCRIPTION
The present invention relates to a pre-filled injection system for pharmaceutical products
which adjusts the useful length of the needle. From an extreme exit position, up to
a retracted position, The needle can adopt all intermediate lengths as desired
user needs.
L'injection de produits pharmaceutiques à partir d'une seringue préremplie impose
généralement à l'utilisateur une longueur d'aiguille fixe ou de pouvoir effectuer un choix
parmi plusieurs aiguilles à la fois, ce qui constitue une contrainte pour réaliser une injection
adaptée à une technique et à un individu donnés. De plus, les seringues existantes ne
permettent pas de protéger les aiguilles après usage, alors qu'elles constituent un risque de
contamination. Tout comme il est important de protéger une aiguille après son usage, il faut
pouvoir s'assurer de son intégrité avant son utilisation.Injecting pharmaceuticals from a pre-filled syringe requires
generally the user a fixed needle length or to be able to make a choice
among several needles at the same time, which constitutes a constraint for performing an injection
adapted to a given technique and individual. In addition, existing syringes do not
do not protect needles after use, when they constitute a risk of
contamination. Just as it is important to protect a needle after use,
ability to verify its integrity before use.
Le système d'injection selon l'invention permet de remédier à l'ensemble des problèmes
évoqués. I1 comporte une partie appelée "bague de réglage", montée clipée mais libre en
rotation sur une partie appelée "appui doigts". Une pièce appelée " piston support d'aiguille"
est contenue dans l'appui doigts qui la bloque en rotation tout en lui permettant de coulisser
longitudinalement. Elle est montée vissée avec l'carrière de la bague de réglage.The injection system according to the invention overcomes all the problems
mentioned. I1 has a part called "adjustment ring", mounted clipped but free in
rotation on a part called "finger support". A part called "needle support piston"
is contained in the finger support which blocks it in rotation while allowing it to slide
longitudinally. It is mounted screwed with the quarry of the adjustment ring.
Si l'on tourne la bague de réglage, le support d'aiguille bloqué en rotation, ne pourra que se
dévisser pour progresser longitudinalement le long du pas de vis de la bague de réglage. Le
support d'aiguille entraînera alors l'aiguille qui lui est solidaire dans son mouvement de
translation. Celle ci sera entraînée à l'intérieur de la bague de réglage qui modifiera ainsi sa
longueur apparente jusqu'à une position extrême où l'aiguille y sera entièrement contenue et
protégée.If the adjustment ring is turned, the needle holder locked in rotation can only
unscrew to progress longitudinally along the thread of the adjustment ring. The
needle holder will then cause the needle which is integral with it in its movement of
translation. This will be driven inside the adjustment ring which will thus modify its
apparent length to an extreme position where the needle will be fully contained therein and
protected.
Le piston support d'aiguille porte également le joint qui coopère avec le réservoir cylindrique,
pour assurer l'injection du liquide.The needle support piston also carries the seal which cooperates with the cylindrical reservoir,
to ensure the injection of the liquid.
L'injection s'effectue en appuyant sur le réservoir ce qui provoque la mise en communication
du compartiment liquide avec la partie arrière de l'aiguille. Le liquide peut alors s'écouler
dans le canal de l'aiguille sous l'action de la force exercée sur le réservoir lors de l'injection.The injection is carried out by pressing on the tank which causes the communication
of the liquid compartment with the rear part of the needle. The liquid can then flow
in the needle channel under the action of the force exerted on the reservoir during the injection.
L'étanchéité du compartiment liquide durant la phase de stockage du système d'injection
prérempli est assuré par le joint engagé dans le réservoir cylindrique et connecté par
emboîtement avec le piston support d'aiguille. Pourvu en son centre d'un orifice allongé, le
joint demeure étanche sous l'action des forces de contraintes centripètes exercées sur son
périmètre extérieur par les parois internes du réservoir cylindrique. Sous l'action de ces
forces, l'orifice allongé voit ses lèpres se rapprocher jusqu'à obtenir un contact étanche. Afin
d'assurer un meilleur contact des lèves de l'orifice allongé, le joint prendra préférentiellement
la forme d'une ellipse dont le grand axe sera perpendiculaift à la forme allongée de l'orifice. Sealing of the liquid compartment during the storage phase of the injection system
pre-filled is provided by the seal engaged in the cylindrical tank and connected by
fitting with the needle support piston. Provided in its center with an elongated orifice, the
joint remains tight under the action of centripetal stress forces exerted on its
outer perimeter by the internal walls of the cylindrical tank. Under the action of these
forces, the elongated orifice sees its lips close together until a tight contact is obtained. To
to ensure better contact of the lifts of the elongated orifice, the seal will preferably take
the shape of an ellipse whose major axis will be perpendicular to the elongated shape of the orifice.
Ainsi les forces de contraintes seront supérieures, selon la direction du grand axe de l'élipse,
favorisant ainsi le rapprochement des lèves de l'orifice allongé.Thus the stress forces will be greater, along the direction of the major axis of the ellipse,
thus favoring the bringing together of the lifts of the elongated orifice.
Le joint assure également la connexion avec le piston support d'aiguille sur lequel il est
emboîté. Cette connexion assure une position de stockage et une position d'injection, chacune
de ces positions est matérialisée par un épaulement distinct qui coopère avec la partie arrière
du piston support d'aiguille en forme de harpon.The seal also ensures connection with the needle support piston on which it is
nested. This connection ensures a storage position and an injection position, each
of these positions is materialized by a separate shoulder which cooperates with the rear part
of the harpoon-shaped needle support piston.
Le système d'injection comporte un protège aiguille qui permet de s'assurer de l'intégrité de
l'aiguille avant son utilisation : il constitue un témoin d'inviolabilité. La base du dit protecteur
est formée d'une couronne fragmentée radialement en de nombreux secteurs constituant
autant de pétales. La base du protège aiguille s'emboîte dans un sillon circulaire situé à l'avant
du système d'injection. Le diamètre externe du sillon étant légèrement inférieur au diamètre
extérieur de la couronne fragmentée, I'emboîtement n'est possible que si l'on diminue le
diamètre de la couronne en comprimant vers le centre chacun de ses pétales constitutifs. The injection system includes a needle guard which ensures the integrity of
the needle before its use: it constitutes a witness of inviolability. The basis of said protector
consists of a crown fragmented radially into numerous sectors constituting
as many petals. The base of the needle guard fits into a circular groove at the front
of the injection system. The external diameter of the groove being slightly smaller than the diameter
outside of the fragmented crown, nesting is only possible if the
diameter of the crown by compressing towards the center each of its constituent petals.
Ovation qui ne peut s'effectuer que par une machine lors de l'assemblage du système
d'injection.Ovation which can only be done by a machine during the assembly of the system
injection.
Une fois retiré, le protège aiguille ne peut plus être remboîté manuellement, dégagés du sillon
dans lequel ils étaient contraints, les pétales reprennent leur position initiale conférant à la
couronne du protège aiguille un diamètre interdisant tout remboîtage manuel dans le sillon. Il
est impossible de recomprimer manuellement et simultanément l'ensemble des pétales. Un
protège aiguille correctement emboîté constitue un témoin d'inviolabilité assurant l'intégrité
de l'aiguille avant injection.Once removed, the needle guard can no longer be manually re-inserted, cleared from the groove
in which they were forced, the petals return to their original position giving the
crown of the needle protector with a diameter preventing any manual reseating in the groove. he
it is impossible to manually recompress all the petals simultaneously. A
properly fitted needle guard constitutes a tamper-evident witness ensuring integrity
of the needle before injection.
Selon des modes particuliers de réalisation: - Les surfaces en contact, de la bague de réglage avec l'appui doigts, seront pourvus de
cannelures ou de stries permettant de séquencer la rotation de la bague par rapport à l'appui
doigts.According to particular embodiments: - The surfaces in contact, of the adjustment ring with the finger support, will be provided with
grooves or grooves to sequence the rotation of the ring relative to the support
fingers.
- La paroi interne de l'appui doigts sera pourvue d'un épaulement qui constituera un clips anti
retour pour la base annulaire du piston support d'aiguille.- The internal wall of the finger support will be provided with a shoulder which will constitute an anti clips
return for the annular base of the needle support piston.
- La bague comportera une portion filetée qui coopére avec une autre portion filetée située sur
le piston support d'aiguille.- The ring will have a threaded portion which cooperates with another threaded portion located on
the needle support piston.
- L'appui doigts comportera des rainures longitudinales internes assurant le blocage en rotation
d'ergots situés à la base du piston support d'aiguille ainsi que leur guidage longitudinal. - The finger support will have internal longitudinal grooves ensuring rotation lock
pins located at the base of the needle support piston and their longitudinal guide.
- La bague sera assemblée et maintenue sur l'appui doigts par un clips autorisant sa libre
rotation.- The ring will be assembled and held on the finger support by a clips allowing its free
rotation.
- La partie arrière du piston support d'aiguille sera pourvue d'un harpon assurant le maintient du
joint qui y est emboîté.- The rear part of the needle support piston will be provided with a harpoon ensuring the maintenance of the
joint fitted therein.
- Le puits interne du joint sera pourvu d'un double épaulement assurant en coopération avec le
harpon une position de stockage et une position d'injection.- The internal well of the joint will be provided with a double shoulder ensuring in cooperation with the
harpoon a storage position and an injection position.
- La face externe de la bague de réglage pourra comporter un index qui se déplacera en regard
d'un graduation portée par l'appui doigts pouvant ainsi donner une lecture directe de la
longueur d'aiguille utile.- The external face of the adjustment ring may include an index which will move opposite
a graduation carried by the finger support which can thus give a direct reading of the
useful needle length.
- Selon une variante ce sont l'appui doigts et le piston support d'aiguille qui coopèrent par
l'intermédiaire du filetage, alors que la bague de réglage assure la rotation du piston support
d'aiguille grâce à des ergots engagés dans des rainures qui lui permettent de coulisser
longitudinalement
Les dessins annexés illustrent l'invention: - La figure n01 représente en coupe longitudinale le système d'injection en position de stockage.- According to a variant, it is the finger support and the needle support piston which cooperate by
through the thread, while the adjusting ring rotates the support piston
needle thanks to lugs engaged in grooves which allow it to slide
longitudinally
The accompanying drawings illustrate the invention: - Figure n01 shows in longitudinal section the injection system in the storage position.
- La figure n02 représente en coupe longitudinale le système d'injection en position activée et
avec une longueur d'aiguille adaptée.- Figure n02 shows in longitudinal section the injection system in the activated position and
with a suitable needle length.
- La figure n03 représente en coupe longitudinale le système d'injection en fin d'injection. - Figure n03 shows in longitudinal section the injection system at the end of injection.
- La figure n04 représente en coupe longitudinale le système d'injection en fin d'injection et
après neutralisation de l'aiguille.- Figure n04 shows in longitudinal section the injection system at the end of injection and
after neutralization of the needle.
- La figure n"5 représente en coupe longitudinale le joint. - Figure n "5 shows in longitudinal section the joint.
- La figure n"6 représente le joint libre de contraintes vu de dessus. - Figure n "6 represents the stress free joint seen from above.
- La figure n"7 représente le joint contraint dans le tube vu de dessus. - Figure n "7 represents the constrained joint in the tube seen from above.
- La figure n"8 A représente le protège aiguille en coupe longitudinale en position contrainte et
engagé dans le sillon.- Figure n "8 A represents the needle guard in longitudinal section in the constrained position and
engaged in the furrow.
- La figure n"8 A' représente le protège aiguille en position contrainte vu de dessus. - Figure n "8 A 'represents the needle guard in the constrained position seen from above.
- La figure n"8 B représente le protège aiguille en coupe longitudinale en position détendue. - Figure n "8 B shows the needle guard in longitudinal section in the relaxed position.
- La figure n"8 B' représente le protège aiguille en position détendue vu de dessus. - Figure n "8 B 'represents the needle guard in the relaxed position seen from above.
- La figure n"9 représente une variante en coupe longitudinale du système d'injection en
position activée et avec une longueur d'aiguille adaptée. Selon cette variante, le pas de vis est
ici porté par la face interne de l'appui doigts.- Figure n "9 shows a variant in longitudinal section of the injection system in
activated position and with a suitable needle length. According to this variant, the screw pitch is
here carried by the internal face of the finger support.
En référence à ces dessins, le système d'injection (fig. 8) comporte un protecteur d'aiguille (13)
pourvu d'une couronne (12) engagée dans un sillon circulaire (15) de la bague (1). La
couronne (12) est fragmentée radialement en de nombreux secteurs constituant autant de
pétales (14). Le diamètre externe du sillon (15) étant légèrement inférieur au diamètre
extérieur de la couronne fiagmentée (12), I'emboîtement n'est possible que si l'on diminue le
diamètre de la couronne (12) en compriment simultanément vers le centre chacun de ses
pétales (14); le montage du protecteur d'aiguille (13) n'est possible qu'avec une machine qui
permet de comprimer simultanément l'ensemble des pétales (14) pour les engager dans le
sillon (15). Une fois enlevé, le protecteur d'aiguille (13) ne peut être remis manuellement
dans le sillon (15). ll constitue un témoin d'inviolabilité pour l'aiguille (11).With reference to these drawings, the injection system (fig. 8) includes a needle protector (13)
provided with a crown (12) engaged in a circular groove (15) of the ring (1). The
crown (12) is radially fragmented into numerous sectors constituting as many
petals (14). The external diameter of the groove (15) being slightly less than the diameter
outside the fiagmented crown (12), nesting is only possible if the
diameter of the crown (12) simultaneously compress each of its
petals (14); mounting the needle guard (13) is only possible with a machine which
allows to compress all the petals (14) simultaneously to engage them in the
groove (15). Once removed, the needle protector (13) cannot be replaced manually
in the groove (15). It constitutes a tamper-evident witness for the needle (11).
Une fois le protecteur d'aiguille (13) fig. n"l enlevé, il convient d'ajuster la longueur de
l'aiguille (11) en tournant la bague (1) maintenue sur l'appui doigts (2) par un clips (10) qui
lui laisse une liberté de rotation. Une pièce appelée piston support d'aiguille (3) est contenue
dans l'appui doigts (2) montée vissée sur le filet (4) situé à l'arrière de la bague de réglage (1).Once the needle protector (13) fig. n "l removed, it is necessary to adjust the length of
the needle (11) by turning the ring (1) held on the finger support (2) by a clips (10) which
gives it freedom to rotate. A part called the needle support piston (3) is contained
in the finger support (2) mounted screwed on the thread (4) located at the rear of the adjustment ring (1).
Le piston support d'aiguille (3) est bloqué en rotation, par ses ergots (6) et (7) engagés dans
des gorges longitudinales (8) et (9) situées sur la face interne de l'appui doigts (2).The needle support piston (3) is locked in rotation, by its lugs (6) and (7) engaged in
longitudinal grooves (8) and (9) located on the internal face of the finger support (2).
La rotation (fig. n"2) de la bague (1) par rapport à l'appui doigts (2) entraîne le piston support
d'aiguille (3) dans un mouvement de translation par rapport à l'appui doigts (2): Les filets (4) et
(5) sont dévissés tout en bloquant la rotation du piston support d'aiguille (3) par les ergots (6) et
(7) engagés dans des gorges longitudinales (8) et (9) ce qui contraint le piston support d'aiguille
(3) à progresser longitudinalement. L'aiguille (11) solidaire du support d'aiguille (3) progresse
avec lui pour laisser une longueur d'aiguille (11) apparente variable ajustée par la rotation de la
bague (1).The rotation (fig. N "2) of the ring (1) relative to the finger support (2) drives the support piston
needle (3) in a translational movement relative to the finger support (2): The threads (4) and
(5) are unscrewed while blocking the rotation of the needle support piston (3) by the pins (6) and
(7) engaged in longitudinal grooves (8) and (9) which constrains the needle support piston
(3) to progress longitudinally. The needle (11) secured to the needle support (3) progresses
with it to leave a variable visible needle length (11) adjusted by the rotation of the
ring (1).
Les surfaces en contact (fig. n02) de la bague (1) et de l'appui doigts (2), seront pourvus de
cannelures ou de stries ( 32) permettant de séquencer la rotation de la bague par rapport à
l'appui doigts (2).The contact surfaces (fig. N02) of the ring (1) and the finger support (2), will be provided with
grooves or grooves (32) for sequencing the rotation of the ring relative to
the finger support (2).
Durant la phase de stockage l'étanchéité du compartiment contenant le liquide (23) fig. n"l est
assuré par le piston (17) engagé dans le tube (16).During the storage phase, the compartment containing the liquid is sealed (23) fig. it is
provided by the piston (17) engaged in the tube (16).
Perforé en son centre d'un orifice allongé (22) fig. n 5,6 & 7, le joint demeure étanche sous
l'action des forces de contraintes centripètes F & F et f & f exercées par le tube (16) sur le
périmètre externe (24) du joint (17). Perforated in its center with an elongated hole (22) fig. n 5,6 & 7, the seal remains watertight under
the action of the centripetal stress forces F & F and f & f exerted by the tube (16) on the
outer perimeter (24) of the seal (17).
Afin d'assurer un meilleur contact des lèvres (25) et (26) fig. n"6 de l'orifice central (22) le joint
(17), prendra préférentiellement la forme d'une élipse dont le grand axe Y' Y sera
perpendiculaire à la forme allongée selon l'axe X X' de l'orifice (22). Ainsi les forces de
contraintes F F seront supérieures aux forces f et f, favorisant ainsi le rapprochement et
l'étanchéité des lèvres (25) et (26) de l'orifice central (22).In order to ensure better contact of the lips (25) and (26) fig. n "6 of the central opening (22) the joint
(17), will preferably take the form of an ellipse whose major axis Y 'Y will be
perpendicular to the elongated shape along the axis XX 'of the orifice (22). So the forces of
stresses FF will be greater than the forces f and f, thus favoring the bringing together and
the sealing of the lips (25) and (26) of the central orifice (22).
L'injection s'effectue en appuyant sur le tube (16) fig. n"2 qui pousse le piston (17) vers l'avant
faisant progresser le harpon (18) de l'épaulement interne (19) du joint (17) à l'épaulement
interne (20) permettant à la partie arrière (21) de l'aiguille (11) d'écarter les lèvres (26) et (25)
de l'orifice comprimé (22) fig.n 2 & 7 du piston (17). La partie arrière de l'aiguille (21) fig.n 2
est maintenant en contact avec le liquide (23) qui peut s'écouler le long de la dite aiguille (12)
sous la pression de la force exercée à l'arrière du tube (16).The injection is carried out by pressing on the tube (16) fig. n "2 which pushes the piston (17) forward
advancing the harpoon (18) from the internal shoulder (19) of the seal (17) to the shoulder
internal (20) allowing the rear part (21) of the needle (11) to separate the lips (26) and (25)
of the compressed orifice (22) fig.n 2 & 7 of the piston (17). The rear part of the needle (21) fig.n 2
is now in contact with the liquid (23) which can flow along the said needle (12)
under the pressure of the force exerted at the rear of the tube (16).
En fin d'injection fig.n"3, le fond du tube (16) a rejoint le joint (17).At the end of injection fig.n "3, the bottom of the tube (16) joined the seal (17).
Pour neutraliser l'aiguille (11) fig,n04 il convient de tourner la bague (1) jusqu'à amener le piston
support d'aiguille (3) en butée arrière avec sa collerette annulaire (27) en appui irréversible
derrière le clips (28) de l'appui doigts (2), l'aiguille (11) solidaire du piston support d'aiguille
(3) se trouve alors totalement contenue à l'intérieur de la bague (1).To neutralize the needle (11) fig, n04 it is necessary to turn the ring (1) until bringing the piston
needle support (3) in rear stop with its annular flange (27) in irreversible support
behind the clips (28) of the finger support (2), the needle (11) secured to the needle support piston
(3) is then completely contained inside the ring (1).
Selon la variante fig.n"9 le filet (29) peut être porté par la face interne de l'appui doigts (2) qui
coopère dans le mouvement de vissage avec les ergots (6) et (7) du piston support d'aiguille
(3) tandis que la bague (1) et le piston support d'aiguille (3) sont bloqués en rotation par des
rainures (30) et (31) qui n'autorisent qu'un mouvement de translation. La rotation de la bague
(1) entraîne celle du piston support d'aiguille (3)dont les ergots (6) et (7) progressent alors
dans le filet (29) permettant ainsi à la longueur apparente de l'aiguille (11) de varier. According to the variant fig.n "9 the net (29) can be carried by the internal face of the finger support (2) which
cooperates in the screwing movement with the pins (6) and (7) of the needle support piston
(3) while the ring (1) and the needle support piston (3) are locked in rotation by
grooves (30) and (31) which allow only a translational movement. The rotation of the ring
(1) causes that of the needle support piston (3) whose lugs (6) and (7) then progress
in the thread (29) thus allowing the apparent length of the needle (11) to vary.
Claims (10)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9705786A FR2762790B1 (en) | 1997-05-05 | 1997-05-05 | VARIABLE NEEDLE LENGTH INJECTION SYSTEM |
| PCT/FR1998/000885 WO1998050094A1 (en) | 1997-05-05 | 1998-05-04 | Injection system adjusting the needle useful length |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9705786A FR2762790B1 (en) | 1997-05-05 | 1997-05-05 | VARIABLE NEEDLE LENGTH INJECTION SYSTEM |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2762790A1 true FR2762790A1 (en) | 1998-11-06 |
| FR2762790B1 FR2762790B1 (en) | 1999-08-13 |
Family
ID=9506784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR9705786A Expired - Fee Related FR2762790B1 (en) | 1997-05-05 | 1997-05-05 | VARIABLE NEEDLE LENGTH INJECTION SYSTEM |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR2762790B1 (en) |
| WO (1) | WO1998050094A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008086552A2 (en) * | 2007-01-17 | 2008-07-24 | Juette Werner | Disposable injection apparatus |
| FR2922457A1 (en) * | 2007-10-23 | 2009-04-24 | Plastef Investissements Sa | SYRINGE DEVICE WITH PROTECTIVE CAP. |
| ITAN20100145A1 (en) * | 2010-08-31 | 2012-03-01 | Anna Campanati | INJECTIVE DEVICE FOR INTRADERMAL SYRINGES |
| US8845595B2 (en) | 2003-03-25 | 2014-09-30 | Tech Group Europe Limited | Device for protection of the needle for a syringe and injection device comprising a syringe and said protection device |
| US9022990B2 (en) | 2011-04-04 | 2015-05-05 | Tech Group Europe Limited | Needle safety shield |
| US9050416B2 (en) | 2012-11-01 | 2015-06-09 | Tech Group Europe Limited | Needle Safety device with floating ring |
| US9220848B2 (en) | 2007-10-23 | 2015-12-29 | Tech Group Europe Limited | Syringe device comprising a syringe body and a bearing sleeve |
| US9314575B2 (en) | 2003-10-22 | 2016-04-19 | Tech Group Europe Limited | Protected injection syringe device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015107613A1 (en) | 2015-05-13 | 2016-11-17 | Hahn-Schickard-Gesellschaft für angewandte Forschung e.V. | Attachment for or on a device for injecting a liquid into or under the skin |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3580255A (en) * | 1968-04-08 | 1971-05-25 | Hugo S Cimber | Aspirator |
| US3720211A (en) * | 1971-08-18 | 1973-03-13 | G Kyrias | Automatic injection system |
| US5478324A (en) * | 1993-02-19 | 1995-12-26 | Medicorp Holding S.A. | Prefilled syringe for storing and for transfer of liquid and sterile medicinal substances |
| EP0754469A2 (en) * | 1993-08-23 | 1997-01-22 | Sakharam Dhundiraj Mahurkar | Hypodermic needle assembly |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2741268B1 (en) * | 1995-11-21 | 1998-02-06 | Turtaut Patrick | PRE-FILLED SYRINGE WITH SELF-VARIABLE LENGTH NEEDLE |
-
1997
- 1997-05-05 FR FR9705786A patent/FR2762790B1/en not_active Expired - Fee Related
-
1998
- 1998-05-04 WO PCT/FR1998/000885 patent/WO1998050094A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3580255A (en) * | 1968-04-08 | 1971-05-25 | Hugo S Cimber | Aspirator |
| US3720211A (en) * | 1971-08-18 | 1973-03-13 | G Kyrias | Automatic injection system |
| US5478324A (en) * | 1993-02-19 | 1995-12-26 | Medicorp Holding S.A. | Prefilled syringe for storing and for transfer of liquid and sterile medicinal substances |
| EP0754469A2 (en) * | 1993-08-23 | 1997-01-22 | Sakharam Dhundiraj Mahurkar | Hypodermic needle assembly |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8845595B2 (en) | 2003-03-25 | 2014-09-30 | Tech Group Europe Limited | Device for protection of the needle for a syringe and injection device comprising a syringe and said protection device |
| US9314575B2 (en) | 2003-10-22 | 2016-04-19 | Tech Group Europe Limited | Protected injection syringe device |
| WO2008086552A2 (en) * | 2007-01-17 | 2008-07-24 | Juette Werner | Disposable injection apparatus |
| WO2008086552A3 (en) * | 2007-01-17 | 2008-09-04 | Werner Juette | Disposable injection apparatus |
| FR2922457A1 (en) * | 2007-10-23 | 2009-04-24 | Plastef Investissements Sa | SYRINGE DEVICE WITH PROTECTIVE CAP. |
| EP2055334A3 (en) * | 2007-10-23 | 2009-08-19 | Plastef Investissements | Syringe device with protective cap |
| US8771235B2 (en) | 2007-10-23 | 2014-07-08 | Tech Group Europe Limited | Syringe device with protective cap |
| US9220848B2 (en) | 2007-10-23 | 2015-12-29 | Tech Group Europe Limited | Syringe device comprising a syringe body and a bearing sleeve |
| ITAN20100145A1 (en) * | 2010-08-31 | 2012-03-01 | Anna Campanati | INJECTIVE DEVICE FOR INTRADERMAL SYRINGES |
| WO2012029082A1 (en) * | 2010-08-31 | 2012-03-08 | Anna Campanati | Device for adjusting the penetration depth of a syringe needle |
| US9022990B2 (en) | 2011-04-04 | 2015-05-05 | Tech Group Europe Limited | Needle safety shield |
| US9050416B2 (en) | 2012-11-01 | 2015-06-09 | Tech Group Europe Limited | Needle Safety device with floating ring |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1998050094A1 (en) | 1998-11-12 |
| FR2762790B1 (en) | 1999-08-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |
Effective date: 20070131 |