WO1998023316A1 - Seringue medicale - Google Patents
Seringue medicale Download PDFInfo
- Publication number
- WO1998023316A1 WO1998023316A1 PCT/CH1997/000410 CH9700410W WO9823316A1 WO 1998023316 A1 WO1998023316 A1 WO 1998023316A1 CH 9700410 W CH9700410 W CH 9700410W WO 9823316 A1 WO9823316 A1 WO 9823316A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- syringe
- piece
- closure
- opening
- counter
- Prior art date
Links
- 238000000465 moulding Methods 0.000 claims abstract description 4
- 238000002347 injection Methods 0.000 claims description 21
- 239000007924 injection Substances 0.000 claims description 21
- 239000007788 liquid Substances 0.000 claims description 17
- 238000003825 pressing Methods 0.000 claims description 3
- 230000005489 elastic deformation Effects 0.000 claims description 2
- 210000000056 organ Anatomy 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000004033 plastic Substances 0.000 description 5
- 239000012528 membrane Substances 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
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
- A61M5/508—Means for preventing re-use by disrupting the piston seal, e.g. by puncturing
Definitions
- the present invention relates to a medical syringe comprising constructive elements authorizing an injection but prohibiting the use of the same syringe for any subsequent injection. In short, it is a self-destructing single-use syringe, without any particular operator manipulation.
- an ejected plug is also to be ruled out because, being a piece of plastic inserted in another, one cannot seriously claim to control the instant at which they dissociate.
- the stopper can jump perfectly during the injection under the sole pressure of the liquid, just as it can already be ejected in the other direction when the liquid is drawn into the syringe. In any case, no one can guarantee that he will not jump and this is unacceptable.
- the object of the present invention is thus to propose a disposable syringe whose constituent elements, and the properties which they have in combination with each other, allow on the one hand an economical and reliable industrial production while guaranteeing d 'on the other hand, by the controllable mechanical properties of the said elements, that the use will be truly unique.
- the present invention relates to a medical syringe comprising a tubular body, in which slides a piston comprising an opening, a closure piece closing said opening before use of the syringe, this closure piece being arranged to cooperate, when the piston reaches the end of the stroke, with a counter-piece secured to the tubular body of the syringe, so as to drive said closure piece out of the opening, so that, after use of the syringe, the piece of obturation no longer permanently closes the opening, so that the syringe cannot be reused.
- the piston is arranged so as to constitute an internal chamber inside which is housed the closure piece, the assembly being arranged so as to impose a predetermined stroke on the closure piece, without recourse to a deforming element.
- the closure part comprising a closure head engaged in the opening and at least one member arranged to prevent its return to its closed position, said member pressing, before injection, against the internal wall of said chamber internal, so as to generate a friction force which is added to that exerted by the edge of the opening on the shutter head, so that the pressure of the liquid exerted on the shutter head during the injection is insufficient to drive the closure head from the opening, all the parts of the syringe being shaped so that they can be produced by molding and assembled in series automatically by axial fitting
- the closure part comprises at its rear part at least one wing tolerating an elastic deformation whose free end is oriented towards the bottom of the body of the syringe and cooperates with the wall of the internal chamber, the wall of the internal chamber being shaped so as to allow the free end of the fin to slide against the wall of the internal chamber when the closure piece moves inside the chamber after to have walked against the counter-piece, but then to prevent the free end of the fin from sliding in the opposite direction.
- the internal chamber may include a first space, the dimensions of which are chosen so as to keep the fin folded along the closure piece when the closure head of the closure piece closes the opening, and a second space. the dimensions of which are chosen so as to allow the deployment of the fin when the closure piece has been moved inside the piston after having come up against the counter-piece.
- the counterpiece comprises at least one member projecting from the bottom of the tubular body of the syringe.
- FIG. 1 is an axial section of the front part of a first embodiment of the syringe, as it occurs before or during the injection;
- Figure 2 is a section similar to that of Figure 1 of the front part of the same syringe, as it appears after an attempt to reuse;
- FIG. 3 is an axial section of the front part of a second embodiment of the syringe, as it occurs before or during the injection;
- - Figure 4 is a section similar to that of Figure 3 of the front part of the same syringe, as it appears after an attempt to reuse;
- - Figures 5 to 7 are partial axial sections of the anterior end of the syringe having three variants of counter-piece serving as a stop for the closure part;
- FIG. 8 is an axial section of the front part of an alternative embodiment of the syringe, the right half-section representing the syringe before injection and the left half-section representing the syringe after injection.
- the syringe shown in Figures 1 and 2 comprises a tubular body 1, at the end of which is a tip 1a intended to receive a hypodermic needle.
- a tubular body In this tubular body slides a piston actuated by means of a rod 2.
- This cruciform rod is terminated by a part 2a having a socket shape.
- the piston comprises an intermediate part 3, an upper part 3a of which, in the form of a sleeve, is forced by axial fitting into the part 2a.
- a part 4 in the form of a socket, hooks to the intermediate part 3 with a notch.
- This part 4 has, on the one hand, an external bead 4b which bears against the internal face of the tubular body 1 in order to ensure sealing between the piston and the tubular body and, on the other hand, a bottom 4a which is in contact with the liquid to be injected 8 and transmits the thrust of the piston to it.
- the piston has an internal chamber, the space of which is delimited by the internal faces of the parts 3 and 4 thus linked.
- the intermediate part 3 comprises a lower part 3b delimiting a lower cylindrical space and an adjacent upper part 3a delimiting an upper cylindrical space, the diameter of the lower cylindrical space being less than that of the upper cylindrical space so as to constitute a shoulder 3c at the junction of the two parts 3a and 3b. Vents were made within part 2a in order to balance the pressure prevailing within the internal chamber at atmospheric pressure.
- the bottom 4a of the part 4 is pierced in its center with an opening 5 in which is engaged the anterior end part 6a, hereinafter called shutter head 6a, of a shutter piece 6.
- This piece of obturation is housed within the internal chamber of the piston, its axis of symmetry being superimposed on that of the syringe.
- the closure piece is mounted so that it can slide along the walls of the lower part 3a of the intermediate piece. It ends, at its posterior end, with a head 6b having, directed towards the front, two elastic fins 6c, diametrically opposite and maintained, before or during a first injection, in the position presented in FIG. 1.
- the dimensions of the shutter head 6a of truncated conical shape, are such that it can be housed and slide within the opening 5 while ensuring a perfect seal.
- the opening has a diameter of 2 mm
- the truncated cone of the closure head has a lower section whose diameter is also 2 mm and an upper section whose diameter is 2.5 mm.
- the shutter head 6a is surmounted by a crown 7 which projects laterally serving on the one hand as a stop for the positioning of the shutter piece inside the internal chamber, and on the other hand contributing to the sealing of said internal chamber.
- the tubular body 1 of the syringe has a counter-piece 10 secured to its bottom 1b, near the nozzle 1a.
- This counter-piece comprises lugs 10a projecting from the bottom lb and the arrangement of which is chosen so that they are in the extension of the shutter head 6a of the shutter piece, while leaving a passage sufficient for the liquid to be injected.
- This counterpart will be presented in detail later.
- the two fins 6c bear on the walls of the lower part 3a defining the lower cylindrical space. The diameter of this cylindrical space is such that the fins are folded there, under constraints, along the closure piece.
- the piston When the piston is actuated, it exerts a pressure on the liquid contained in the body which is then ejected through the nozzle 1a.
- the closure piece 6 comes into contact, via its head 6a, with the lugs 10a of the counterpiece 10 which then acts as a stop.
- the piston impaled on the counter-piece 10, which has the effect of driving the closure head 6a out of the opening 5, the piece d obturation then moving inside the internal chamber of the piston, the fins 6c sliding along the walls of the lower part 3b of the intermediate piece 3, these fins then deploying inside the upper cylindrical space constituted by the upper part 3a of the intermediate piece when their ends exceed the shoulder 3c.
- FIGS. 3 and 4 differs from the first embodiment only in the arrangement of the closure piece 6.
- the closure piece 6 has only one elastic fin 6c, of structure and function however identical to those of the two fins of the closure part of the previous embodiment.
- the counterpiece 10 is constituted by three lugs 10a which protrude from the bottom lb of the tubular body, in the extension of the internal walls of the nozzle 1a.
- the height of the lugs 10a is chosen so as to cause a sufficient displacement of the closure part inside the internal chamber of the piston, when the piston reaches the end of the stroke, to allow the deployment of the fins 6c to the inside the upper cylindrical space formed by the upper part 3a of the intermediate piece, as described above.
- the counter-piece 10 is constituted by an annular protrusion that the bottom 1b of the tubular body of the syringe has at its center. This projection is crenellated, which spares passages 12 allowing the liquid contained in the syringe to pass into the nozzle even while the closure head 6a of the closure piece is in abutment on said projection.
- the bottom lb of the tubular body 1 of the syringe is lined in its center with a washer 10b having radial arms 10c leading to a central stud or to a terminal 10a in the form of a pin against which abuts the shutter head 6a when the piston reaches the end of the stroke.
- the size of this pad 10a is chosen so that the previously described effects are obtained.
- the washer is crimped into the mass of the syringe body and rests in part on the opening of the tip 1a. The spacing between the radial arms is sufficient so as not to impede the passage of the liquid to be injected.
- the variant presented in FIG. 7 differs from the previous variant by the shape of the central washer 10b, placed on the bottom lb of the tubular body 1 of the syringe.
- This washer has radial arms 10c carrying a central stud 10b against which abuts the shutter head 6a when the piston reaches the end of the stroke.
- This variant has the advantage that the washer can be placed on the bottom of any already existing conventional syringe body.
- the part 4 hooks to the intermediate part 3 with a notch.
- the part 4 is preferably made of a semi-plastic material. rigid or flexible, for example made of synthetic rubber.
- the part 4 is made of rigid plastic.
- the assembly described and shown is easy to manufacture all the parts that can be made of plastic material by simple molding and easily assembled by axial fitting, allowing large-scale industrial production, in particular automatic series production, for example by means of automatic carousels since the assembly of the different parts of the syringe does not require any relative angular positioning.
- the design of the syringe according to the invention also allows the use, by adapting them, of the traditional components of the syringes called "with three bodies", syringes made up of a cylinder, a piston and a seal. .
- the operation of the syringe according to the invention is completely reliable as soon as the displacement of the closure piece which brings it into its eclipsed position is caused only when the piston reaches the end of the stroke, which allows, among other advantages, being able to inject all the liquid contained in the syringe.
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97944679A EP0959924B1 (fr) | 1996-11-27 | 1997-10-28 | Seringue medicale |
CA002273977A CA2273977A1 (fr) | 1996-11-27 | 1997-10-28 | Seringue medicale |
JP52409998A JP2001506516A (ja) | 1996-11-27 | 1997-10-28 | 医療用注射器 |
US09/308,794 US6083200A (en) | 1996-11-27 | 1997-10-28 | Medical syringe |
AU46136/97A AU4613697A (en) | 1996-11-27 | 1997-10-28 | Medical syringe |
DE69736195T DE69736195T2 (de) | 1996-11-27 | 1997-10-28 | Medizinische spritze |
BR9713554-2A BR9713554A (pt) | 1996-11-27 | 1997-10-28 | Seringa medical |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH2922/96 | 1996-11-27 | ||
CH292296 | 1996-11-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998023316A1 true WO1998023316A1 (fr) | 1998-06-04 |
Family
ID=4244642
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CH1997/000410 WO1998023316A1 (fr) | 1996-11-27 | 1997-10-28 | Seringue medicale |
Country Status (10)
Country | Link |
---|---|
US (1) | US6083200A (fr) |
EP (1) | EP0959924B1 (fr) |
JP (1) | JP2001506516A (fr) |
CN (1) | CN1238704A (fr) |
AT (1) | ATE330653T1 (fr) |
AU (1) | AU4613697A (fr) |
BR (1) | BR9713554A (fr) |
CA (1) | CA2273977A1 (fr) |
DE (1) | DE69736195T2 (fr) |
WO (1) | WO1998023316A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2114490A2 (fr) * | 2007-02-05 | 2009-11-11 | Becton, Dickinson and Company | Ensemble de seringue ayant des caractéristiques de prévention d'une réutilisation |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6530903B2 (en) | 2000-02-24 | 2003-03-11 | Xiping Wang | Safety syringe |
AUPQ867900A0 (en) | 2000-07-10 | 2000-08-03 | Medrad, Inc. | Medical injector system |
ES1051002Y (es) * | 2002-01-21 | 2002-10-16 | Serrano Luis Canadas | Jeringa perfeccionada. |
US7331934B2 (en) * | 2003-07-30 | 2008-02-19 | Becton Dickinson Co | Syringe assembly having disabling mechanism |
ATE480281T1 (de) * | 2003-07-30 | 2010-09-15 | Becton Dickinson Co | Spritzvorrichtung mit einer verriegelungsvorrichtung |
CN101444650B (zh) * | 2003-07-30 | 2011-10-12 | 贝克顿·迪金森公司 | 具有失效机构的注射器组件 |
US7399293B2 (en) | 2003-07-30 | 2008-07-15 | Becton, Dickinson And Company | Syringe assembly having disabling mechanism with tamper resistance features |
IL157981A (en) | 2003-09-17 | 2014-01-30 | Elcam Medical Agricultural Cooperative Ass Ltd | Auto injector |
US7666169B2 (en) | 2003-11-25 | 2010-02-23 | Medrad, Inc. | Syringe and syringe plungers for use with medical injectors |
IL160891A0 (en) | 2004-03-16 | 2004-08-31 | Auto-mix needle | |
ES2349749T3 (es) * | 2004-12-21 | 2011-01-11 | BECTON, DICKINSON & COMPANY | Conjunto de jeringuilla que tiene un mecanismo de inutilización. |
US8926569B2 (en) | 2006-03-15 | 2015-01-06 | Bayer Medical Care Inc. | Plunger covers and plungers for use in syringes and methods of fabricating plunger covers and plungers for use in syringes |
USD942005S1 (en) | 2007-03-14 | 2022-01-25 | Bayer Healthcare Llc | Orange syringe plunger cover |
USD847985S1 (en) | 2007-03-14 | 2019-05-07 | Bayer Healthcare Llc | Syringe plunger cover |
USD1002840S1 (en) | 2007-03-14 | 2023-10-24 | Bayer Healthcare Llc | Syringe plunger |
US20090187135A1 (en) * | 2008-01-18 | 2009-07-23 | Eilaz Babaev | Ultrasonic syringe |
EP2296756A1 (fr) | 2008-06-04 | 2011-03-23 | Neovista, Inc. | Système de distribution de rayonnement tenu à la main permettant d'avancer un câble de source de rayonnement |
US9174003B2 (en) | 2012-09-28 | 2015-11-03 | Bayer Medical Care Inc. | Quick release plunger |
CN106102806B (zh) | 2014-03-19 | 2019-12-17 | 拜耳医药保健有限公司 | 用于将针筒接合到注射器的系统 |
US9480797B1 (en) | 2015-10-28 | 2016-11-01 | Bayer Healthcare Llc | System and method for syringe plunger engagement with an injector |
DK3758777T3 (da) | 2018-02-27 | 2023-02-27 | Bayer Healthcare Llc | Sprøjtestempelindgrebsmekanisme |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2298340A1 (fr) * | 1975-01-24 | 1976-08-20 | Blanie Paul | Seringue non reutilisable |
FR2606340A1 (fr) | 1986-11-07 | 1988-05-13 | Materiel De Voirie | Dispositif de fermeture d'une porte de vidange pour benne basculante montee sur vehicule routier |
FR2606643A1 (fr) | 1986-11-17 | 1988-05-20 | Congio Gerard | Seringue rendue hors d'usage apres la premiere utilisation |
GB2207054A (en) * | 1987-07-21 | 1989-01-25 | Dowty Seals Ltd | Non-reusable syringe |
EP0345159A1 (fr) | 1988-06-03 | 1989-12-06 | Clotteau, Jean-Edouard | Seringue à injection unique |
WO1990003817A1 (fr) * | 1988-10-13 | 1990-04-19 | Ewald Pickhard | Dispositif d'injection avec moyen pour empecher sa reutilisation |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2220143B (en) * | 1988-06-28 | 1991-10-02 | William Thomas Dennis Bates | Single-use syringe |
US5921960A (en) * | 1996-09-13 | 1999-07-13 | Mcgary; R. Kern | Non-reusable retactable safety syringe |
-
1997
- 1997-10-28 CA CA002273977A patent/CA2273977A1/fr not_active Abandoned
- 1997-10-28 EP EP97944679A patent/EP0959924B1/fr not_active Expired - Lifetime
- 1997-10-28 BR BR9713554-2A patent/BR9713554A/pt not_active Application Discontinuation
- 1997-10-28 CN CN97180077.4A patent/CN1238704A/zh active Pending
- 1997-10-28 DE DE69736195T patent/DE69736195T2/de not_active Expired - Fee Related
- 1997-10-28 US US09/308,794 patent/US6083200A/en not_active Expired - Fee Related
- 1997-10-28 WO PCT/CH1997/000410 patent/WO1998023316A1/fr active IP Right Grant
- 1997-10-28 AT AT97944679T patent/ATE330653T1/de not_active IP Right Cessation
- 1997-10-28 JP JP52409998A patent/JP2001506516A/ja active Pending
- 1997-10-28 AU AU46136/97A patent/AU4613697A/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2298340A1 (fr) * | 1975-01-24 | 1976-08-20 | Blanie Paul | Seringue non reutilisable |
FR2606340A1 (fr) | 1986-11-07 | 1988-05-13 | Materiel De Voirie | Dispositif de fermeture d'une porte de vidange pour benne basculante montee sur vehicule routier |
FR2606643A1 (fr) | 1986-11-17 | 1988-05-20 | Congio Gerard | Seringue rendue hors d'usage apres la premiere utilisation |
GB2207054A (en) * | 1987-07-21 | 1989-01-25 | Dowty Seals Ltd | Non-reusable syringe |
EP0345159A1 (fr) | 1988-06-03 | 1989-12-06 | Clotteau, Jean-Edouard | Seringue à injection unique |
WO1990003817A1 (fr) * | 1988-10-13 | 1990-04-19 | Ewald Pickhard | Dispositif d'injection avec moyen pour empecher sa reutilisation |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2114490A2 (fr) * | 2007-02-05 | 2009-11-11 | Becton, Dickinson and Company | Ensemble de seringue ayant des caractéristiques de prévention d'une réutilisation |
EP2114490A4 (fr) * | 2007-02-05 | 2011-03-09 | Becton Dickinson Co | Ensemble de seringue ayant des caractéristiques de prévention d'une réutilisation |
Also Published As
Publication number | Publication date |
---|---|
CN1238704A (zh) | 1999-12-15 |
US6083200A (en) | 2000-07-04 |
AU4613697A (en) | 1998-06-22 |
JP2001506516A (ja) | 2001-05-22 |
DE69736195D1 (de) | 2006-08-03 |
BR9713554A (pt) | 2000-01-25 |
DE69736195T2 (de) | 2007-06-28 |
ATE330653T1 (de) | 2006-07-15 |
EP0959924A1 (fr) | 1999-12-01 |
CA2273977A1 (fr) | 1998-06-04 |
EP0959924B1 (fr) | 2006-06-21 |
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