FR2632192A1 - SINGLE USE SYRINGE - Google Patents
SINGLE USE SYRINGE Download PDFInfo
- Publication number
- FR2632192A1 FR2632192A1 FR8807566A FR8807566A FR2632192A1 FR 2632192 A1 FR2632192 A1 FR 2632192A1 FR 8807566 A FR8807566 A FR 8807566A FR 8807566 A FR8807566 A FR 8807566A FR 2632192 A1 FR2632192 A1 FR 2632192A1
- Authority
- FR
- France
- Prior art keywords
- piston
- head
- syringe
- rod
- stroke
- 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.)
- Granted
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
- A61M5/50—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
- A61M5/5066—Means for preventing re-use by disconnection of piston and piston-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
- A61M5/5066—Means for preventing re-use by disconnection of piston and piston-rod
- A61M2005/5073—Means for preventing re-use by disconnection of piston and piston-rod by breaking or rupturing the connection parts
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
Description
La présente invention a pour objet une seringue à usage unique comprenant un corps tubulaire terminé par un ajutage de sortie, et un piston comportant une tige montée coulissante dans le corps et pourvue d'une tête étanche par rapport au corps. The present invention relates to a disposable syringe comprising a tubular body terminated by an outlet nozzle, and a plunger comprising a rod mounted to slide in the body and provided with a head that is sealed relative to the body.
On sait que les seringues dites à usage unique ou jetables dont le corps et le piston sont réalisés en matière plastique, ne doivent être impérativement utilisées qu'une seule fois, en raison de la difficulté de les stériliser à nouveau après le premier usage. Or, on constate que dans certaines circonstances, cet impératif n'est pas respecté, ce qui peut entraîner chez le patient de graves complications. We know that the so-called disposable or disposable syringes whose body and plunger are made of plastic, must imperatively be used only once, because of the difficulty of sterilizing them again after the first use. However, we see that in certain circumstances, this imperative is not respected, which can lead to serious complications for the patient.
L'invention a donc pour but de proposer une seringue à usage unique réalisée de manière telle qu'elle soit automatiquement rendue inutilisable pour un nouvel usage en fin de course du piston. The invention therefore aims to provide a disposable syringe made in such a way that it is automatically rendered unusable for new use at the end of the piston stroke.
Suivant l'invention, la seringue comporte des moyens pour désolidariser, par rupture en fin de course, la tête et la tige du piston. According to the invention, the syringe comprises means for separating, by breaking at the end of the stroke, the head and the piston rod.
Dans une forme de réalisation préférée, les dits moyens sont constitués d'une part, par un secteur torique ménagé à l'extrémité de la seringue voisine de l'ajutage de sortie, et d'autre part, d'une zone fragile à la jonction de la tige et de la tête du piston. In a preferred embodiment, said means consist on the one hand, of a toric sector formed at the end of the syringe adjacent to the outlet nozzle, and on the other hand, of a fragile zone at the junction of the rod and the piston head.
L'enfoncement complet du piston fait basculer la tête de celui-ci, tout en maintenant l'étanchéité jusqu'au bout, et amorce ainsi une variation de l'angle entre la tête et la tige du piston, créant une rupture au point de jonction fragilisé. Cette rupture interdit la remontée de la tête du piston et le réemploi de la seringue. The full depression of the piston tilts the head of the latter, while maintaining the seal until the end, and thus initiates a variation of the angle between the head and the piston rod, creating a rupture at the point of weakened junction. This rupture prohibits the raising of the piston head and the reuse of the syringe.
La forme de la section de la tige du piston peut être quelconque : cylindrique, cruciforme ou autre. Le profil de la tige du piston, proche de la tête, doit être réalisé de manière à permettre le basculement de la tête du piston en fin de course. The shape of the section of the piston rod can be arbitrary: cylindrical, cruciform or other. The profile of the piston rod, close to the head, must be produced in such a way as to allow the piston head to tilt at the end of the stroke.
Ainsi l'extrémité de la tige contigüe à la zone fragilisée a sa surface inclinée sur l'axe du piston. Si la tige est cylindrique, la surface terminale de la tige peut ainsi être conique. Thus the end of the rod contiguous to the weakened zone has its surface inclined on the axis of the piston. If the rod is cylindrical, the end surface of the rod can thus be conical.
D'autres particularités et avantages de l'invention apparaîtront au cours de la description qui va suivre d'une forme de réalisation non limitative de la seringue selon l'invention. Other features and advantages of the invention will become apparent during the following description of a non-limiting embodiment of the syringe according to the invention.
La figure 1 est une vue en coupe longitudinale d'un mode de réalisation de la seringue en position de stockage avant usage. Figure 1 is a longitudinal sectional view of an embodiment of the syringe in the storage position before use.
La figure 2 est une vue analogue à la Fiv.1 montrant la seringue après le premier usage. Figure 2 is a view similar to Fiv.1 showing the syringe after first use.
La figure 3 est une vue en coupe transversale suivant 3-3 de la Fiv.1, la tige du piston étant supposée enlevée. Figure 3 is a cross-sectional view along 3-3 of Fiv.1, the piston rod being assumed to be removed.
La seringue à usage unique représentée comprend un corps tubulaire cylindrique 1 terminé à l'une de ses extrémités par un ajutage 2 permettant la sortie du liquide, et auquel peut être adaptée une aiguille non représentée. Son extrémité opposée est munie de deux oreilles radiales 14 permettant la manipulation de la seringue. Celle-ci comprend également, un piston P monté coulissant dans le corps 1, constitué d'une tête 8 reliée à une tige-guide 10 par une zone fragilisée 9 et pouvant coulisser de manière étanche dans le corps 1. The single-use syringe shown comprises a cylindrical tubular body 1 terminated at one of its ends by a nozzle 2 allowing the exit of the liquid, and to which a needle which is not shown can be adapted. Its opposite end is provided with two radial ears 14 allowing the manipulation of the syringe. It also includes a piston P mounted sliding in the body 1, consisting of a head 8 connected to a guide rod 10 by a weakened zone 9 and capable of sliding in leaktight manner in the body 1.
L'extrémité de la tige 10 contigüe-à la zone fragilisée 9 est profilée de manière que sa surface 15 soit inclinée sur l'axe du piston P. Ainsi est réservé entre cette surface 15 et la tête 8, qui peut se présenter sous la forme d'une plaquette comme représenté, un dégagement annulaire 16 de section sensiblement triangulaire, qui permet le basculement de la tête 8 vers la surface 15 en fin de course du piston P. The end of the rod 10 contiguous to the weakened zone 9 is profiled so that its surface 15 is inclined on the axis of the piston P. Thus is reserved between this surface 15 and the head 8, which can be present under the form of a plate as shown, an annular clearance 16 of substantially triangular section, which allows the tilting of the head 8 towards the surface 15 at the end of the stroke of the piston P.
Du côté opposé à la tête 8, la tige-guide 10 est pourvue d'un bouton-poussoir 11. On the side opposite to the head 8, the guide rod 10 is provided with a push button 11.
A l'extrémité du corps de la seringue proche de l'ajutage 2 est ménagé intérieurement un segment de tore 7 de même diamètre que le corps 1 de la seringue. At the end of the body of the syringe near the nozzle 2 is internally formed a torus segment 7 of the same diameter as the body 1 of the syringe.
Ce segment ou secteur torique 7 peut pivoter autour d'une extrémité 3 d'une génératrice 13 du corps 1. Un plan incliné 6 relie l'extrémité 3 à l'ajutage 2, qui est décentré vers le secteur torique 7 par rapport à l'axe général de la seringue. Le plan 6 est incliné d'un angle ( 0 < ) sur l'axe de la seringue et sur le plan de la tête 8.This segment or toric sector 7 can pivot around one end 3 of a generator 13 of the body 1. An inclined plane 6 connects the end 3 to the nozzle 2, which is off-center towards the toric sector 7 relative to the general axis of the syringe. The plane 6 is inclined at an angle (0 <) on the axis of the syringe and on the plane of the head 8.
Le plan de départ du segment de tore 7 se situe entre les extrémités 3 et 4 des génératrices verticales du corps 1 diamétralement opposées dans le plan des Fig.1 et 2. The starting plane of the torus segment 7 is located between the ends 3 and 4 of the vertical generatrices of the body 1 diametrically opposite in the plane of Fig. 1 and 2.
En fin de course du piston P (Fig.2), sa tête 8 bascule autour de l'extrémité 3 de jonction entre la génératrice 13 et le plan terminal 6 incliné sur l'axe de la seringue. Ce basculement s'effectue par glissement de la tête 8 sur le segment de tore 7 sous la pression exercée par le poussoir 11, sans que l'étanchéité soit compromise au cours de ce glissement. Ce résultat avantageux est obtenu grâce au fait que le rayon du segment torique 7 est égal au diamètre du corps 1. At the end of the piston P stroke (Fig.2), its head 8 rocks around the end 3 of junction between the generator 13 and the terminal plane 6 inclined on the axis of the syringe. This tilting is effected by sliding of the head 8 on the torus segment 7 under the pressure exerted by the pusher 11, without the sealing being compromised during this sliding. This advantageous result is obtained thanks to the fact that the radius of the toric segment 7 is equal to the diameter of the body 1.
En même temps, la zone fragile 9 se rompt, rendant la seringue inutilisable pour un nouvel usage, et la tête 8 vient se plaquer sur le plan incliné 6. At the same time, the fragile zone 9 ruptures, rendering the syringe unusable for new use, and the head 8 is pressed against the inclined plane 6.
L'angle Or est défini dans chaque cas d'application en fonction de la qualité et de la souplesse du matériau choisi pour la fabrication de l'ensemble du piston P. The angle Gold is defined in each application case as a function of the quality and flexibility of the material chosen for the manufacture of the assembly of the piston P.
Le stockage du piston avant usage est réalisé dans la position illustrée sur la Fig.1. Le maintien dans cette position peut être assuré par un cylindre fendu 12 jetable, placé entre la tête Il du piston P et les oreilles 14 de la seringue. The piston is stored before use in the position illustrated in Fig.1. Maintaining in this position can be ensured by a disposable split cylinder 12, placed between the head Il of the piston P and the ears 14 of the syringe.
L'agencement selon l'invention présente l'avantage, par rapport aux seringues à usage unique connues, d'assurer une excellente étanchéité en fin de course après rupture de la zone fragile 9, et ce sans à-coup gênant pour le patient. En effet le pourtour de la tête 8 reste constamment appliqué de manière étanche sur le secteur torique 7 pendant son basculement autour du point 3, jusqu'à son application sur le plan incliné 6. The arrangement according to the invention has the advantage, compared with known disposable syringes, of ensuring excellent sealing at the end of the stroke after rupture of the fragile zone 9, and this without causing any inconvenience to the patient. In fact, the periphery of the head 8 remains constantly applied in a sealed manner to the toroidal sector 7 during its tilting around the point 3, until it is applied to the inclined plane 6.
Claims (4)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8807566A FR2632192B1 (en) | 1988-06-07 | 1988-06-07 | SINGLE USE SYRINGE |
AU38332/89A AU3833289A (en) | 1988-06-07 | 1989-06-01 | Single-use syringe |
PCT/FR1989/000272 WO1989011887A1 (en) | 1988-06-07 | 1989-06-01 | Single-use syringe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8807566A FR2632192B1 (en) | 1988-06-07 | 1988-06-07 | SINGLE USE SYRINGE |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2632192A1 true FR2632192A1 (en) | 1989-12-08 |
FR2632192B1 FR2632192B1 (en) | 1994-09-30 |
Family
ID=9367028
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8807566A Expired - Fee Related FR2632192B1 (en) | 1988-06-07 | 1988-06-07 | SINGLE USE SYRINGE |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU3833289A (en) |
FR (1) | FR2632192B1 (en) |
WO (1) | WO1989011887A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999053980A1 (en) * | 1998-04-21 | 1999-10-28 | Waishi Kwok | Disposable syringe |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2807656A1 (en) * | 1977-02-25 | 1978-08-24 | Japan Medical Supply Co | Injection syringe for collection of blood |
WO1983000438A1 (en) * | 1981-08-04 | 1983-02-17 | Mercantile & Technical Promoti | Self-destructible syringes |
EP0029017B1 (en) * | 1979-11-07 | 1983-12-21 | ELBAK Batteriewerke Gesellschaft m.b.H. | Apparatus for jacketing and stacking positive or negative battery plates |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NO157085C (en) * | 1986-01-07 | 1988-01-20 | Chr Sandsdalen | DEVICE SPRAY DISPOSAL DEVICE. |
IN169618B (en) * | 1987-06-25 | 1991-11-23 | Agven Medical Corp Ltd |
-
1988
- 1988-06-07 FR FR8807566A patent/FR2632192B1/en not_active Expired - Fee Related
-
1989
- 1989-06-01 WO PCT/FR1989/000272 patent/WO1989011887A1/en unknown
- 1989-06-01 AU AU38332/89A patent/AU3833289A/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2807656A1 (en) * | 1977-02-25 | 1978-08-24 | Japan Medical Supply Co | Injection syringe for collection of blood |
EP0029017B1 (en) * | 1979-11-07 | 1983-12-21 | ELBAK Batteriewerke Gesellschaft m.b.H. | Apparatus for jacketing and stacking positive or negative battery plates |
WO1983000438A1 (en) * | 1981-08-04 | 1983-02-17 | Mercantile & Technical Promoti | Self-destructible syringes |
Also Published As
Publication number | Publication date |
---|---|
FR2632192B1 (en) | 1994-09-30 |
WO1989011887A1 (en) | 1989-12-14 |
AU3833289A (en) | 1990-01-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |