EP0413697A1 - Seringue et fourreau d'aiguille protecteur - Google Patents
Seringue et fourreau d'aiguille protecteurInfo
- Publication number
- EP0413697A1 EP0413697A1 EP89903665A EP89903665A EP0413697A1 EP 0413697 A1 EP0413697 A1 EP 0413697A1 EP 89903665 A EP89903665 A EP 89903665A EP 89903665 A EP89903665 A EP 89903665A EP 0413697 A1 EP0413697 A1 EP 0413697A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- syringe
- needle
- barrel
- protective sheath
- hollow body
- 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- Withdrawn
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
- A61M5/178—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
- A61M5/178—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
- A61M5/3213—Caps placed axially onto the needle, e.g. equipped with finger protection guards
-
- 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
- A61M2005/3103—Leak prevention means for distal end of syringes, i.e. syringe end for mounting a needle
- A61M2005/3106—Plugs for syringes without needle
-
- 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
- A61M5/3245—Constructional features thereof, e.g. to improve manipulation or functioning
- A61M2005/3253—Constructional features thereof, e.g. to improve manipulation or functioning disconnecting the needle hub from the syringe barrel during removal of the sleeve from the syringe barrel
Definitions
- THIS INVENTION relates to a protective sheath for a needle of a syringe, to a syringe for use with the protective sheath and to a combination of a syringe and a protective sheath for the needle of the syringe.
- syringe shall be taken to include hypodermic syringes and other devices incorporating a needle for- injection of fluid into, or extraction of fluid from, a body.
- the present invention seeks to provide an alternative arrangement for isolating a syringe needle to avoid contamination and injury.
- the invention resides in a protective sheath for a syringe needle one end of which needle is adapted for connection to a syringe, said protective sheath comprising a hollow body having a movable wall and an opening opposite said movable wall, said movable wall being adapted to support the syringe needle with said one end exposed to the exterior of the hollow body to facilitate connection to the syringe, said wall being movable between a first position in which the needle is disposed wholly within the confines of the hollow body and a second position in which the needle extends outwardly of the hollow body through said opening.
- said one end of the needle is integral with said movable wall.
- said one end of the needle includes socket opening onto the exterior face of the said movable wall, said socket being arranged to receive and retain part of the syringe to provide fluid communication between the needle within the syringe.
- said hollow body includes side wall means one end of which defines said opening and wherein said movable wall is slidably supported between said side wall means for movement therealong between said first and second positions.
- said side wall means comprises a cylindrical side wall.
- guide means are provided for guiding said movable wall as it moves along said side wall means.
- a closure means is provided for selectively closing said opening.
- the closure means may be in the form of a cap adapted to be removably fitted onto said one end of the cylindrical side wall.
- the invention resides in a syringe for use with a needle within a protective sheath as aforesaid, said syringe comprising a barrel, a nozzle at one end of said barrel, a plunger receivable in the barrel for sliding and sealing movement therealong towards and away from said nozzle, an axial bore provided in the nozzle and. extending between the interior of the barrel and the exterior of the syringe, said nozzle being adapted to be received and retained in said socket in the protective sheath whereby said bore in the nozzle provides for fluid communication between the needle and the interior of the barrel.
- said nozzle is provided with a thread formation for threading engagement with said aperture in the sheath.
- the nozzle may be releasably retained in the socket.
- the nozzle may be adapted to be fractured to facilitate separation of the protective sheath and the syringe. With the latter arrangement, portion of the nozzle remains captive in the socket of the protective sheath and so obstructs further use of the needle contained within the protective sheath.
- said nozzle is provided with a weakened section to facilitate fracturing thereof.
- the invention resides in a combination of a syringe and a protective sheath for the needle of the syringe, said syringe comprising a barrel adapted at one end to support said needle with the needle in fluid communication with the interior of the barrel, a plunger receivable in the barrel for sliding and sealing movement therealong towards and away from said one end, said sheath comprising a hollow body mounted on the barrel for movement relative to the barrel between a first position in which the needle is disposed wholly within the confines of the hollow body and a second position in which the needle extends outwardly of the hollow body through an opening in the body.
- Fig. 1 is a schematic side view of a protective sheath for a syringe needle
- Fig. 2 is a schematic side view of a syringe for use with the protective sheath shown in Fig. 1;
- Fig. 3 is a view showing the protective sheath and the syringe before the needle contained within the protective sheath is fitted onto the syringe;
- Fig. 4 is a view showing the needle within the protective sheath fitted onto the syringe
- Fig. 5 is a schematic side view showing the needle fitted onto the .syringe and the protective sheath retracted so as to expose the needle so that an injection fluid can be drawn into the syringe;
- Fig. 6 is a schematic side view showing a position of the syringe corresponding to injection of fluid into the body of a patient;
- Fig. 7 is a view showing the syringe after completion of the injection and the syringe needle returned into the protective sheath;
- Fig. 8 is a view showing the syringe needle isolated within the sheath and the syringe separated from the needle;
- Fig. 9 is a side view of a protective sheath for a needle and a syringe, according to a second embodiment.
- Fig. 10 is a view similar to Fig. 9 showing the syringe and protective sheath after use.
- the embodiments shown in the drawings are each directed to a combination of a syringe 11 and a protective sheath 12 for a needle 13 for the syringe.
- the needle is moveable between a position in which it is wholly contained within the protective sheath and a position in which it extends outwardly from within the sheath, as will be explained in more detail later.
- the syringe 11 comprises a barrel 15 which has a nozzle 17 at its distal end 19 and which is open at its proximal end 21.
- a flange 23 is formed around the opening at the proximal end of the barrel to provide a means by which a user may grip the barrel while using the syringe.
- the nozzle 17 defines an axial passage 25 one end of which communicates with interior of the barrel while the other end opens onto the exterior of the barrel.
- An external thread formation 27 is provided on the nozzle 17.
- the syringe further comprises a plunger 30 which includes a piston 31 and a shank 33.
- the piston is received in the syringe barrel and is in sliding and sealing engagement with the barrel.
- the shank 33 is connected to the piston 31 and extends out through the opening at the proximal end of the syringe barrel.
- the outer end of the shank has a flange 35 to facilitate manual operation of the plunger.
- the protective sheath 12 comprises a hollow body 41 having a cylindrical side wall 43.
- the hollow body is provided with an opening 45 at one end which it can be selectively closed by a closure means 47 in the form of a cap.
- the hollow body is provided with a movable wall 49 which is mounted in the cylindrical side wall for sliding movement therealong.
- a track means 51 is provided for guiding the movable wall in its movement along the cylindrical side wall.
- the track means 51 is in the form of a pair of longitudinal ribs provided on diametrally opposed sides of the inner surface of the cylindrical side wall and two recesses (not shown) which are provided in the periphery of the movable wall and each of which receives one of the longitudinal ribs.
- the syringe needle 13 is mounted on the movable wall 49 for movement with the wall.
- the syringe needle has an outer end 55 which is provided with a sharp point for penetrating the body of a patient and an inner end 57 which defines a socket 59 to receive and retain the nozzle 17 of the syringe 11.
- the socket 59 is formed integral with the movable wall 43 and is provided with an internal thread formation 61 for engagement with the external thread formation 27 on the nozzle.
- The- cylindrical side wall of the sheath is of an internal diameter which is larger than the external diameter of the barrel of the syringe. In this way, the barrel of the syringe can be received in the hollow body as the movable wall is moved in the direction towards the opening 45.
- the syringe 11 and the protective sheath 12 with the needle 13 therein, are packaged separately.
- the sheath 12 maintains the needle in a sterile environment prior to use.
- the syringe and the protective sheath are fitted together by S3crewing the threaded nozzle 17 of the syringe into the socket 59 of the needle, as shown in Fig. 4 of the drawings.
- the cap 47 is removed from the outer end of the protective sheath to expose the opening 49 and the syringe 11 is moved forwardly relative to the sheath so as to cause the movable wall 49 to travel axially along hollow body 41 towards opening 47.
- the syringe needle 13 moves with the movable wall 49 and extends outwardly of the hollow body through the opening 45, as shown in Fig. 5. In this position the barrel of the syringe is received within the cylindrical side wall of the hollow body of the protective sheath and the syringe needle is exposed so as to allow the syringe to be used to perform an injection. Injection fluid is then drawn into the syringe and the injection performed. After the injection, the syringe 11 is moved rearwardly relative to the protective sheath so as to withdraw the syringe barrel from within the hollow body of the protective sheath.
- the movable wall moves away from the opening 45 in the hollow body and so withdraws the needle into the confines of the hollow body, as shown in Fig. 7.
- the cap 47 is returned into position on the outer end of the protective sheath, the syringe needle 13 is once again isolated. In this position the syringe needle, which may be contaminated, is not exposed for inadvertent puncturing of the patient or any person handling the syringe.
- the protective sheath can then be unscrewed from the syringe and discarded.
- the first embodiment described does not have provision for deterring further use of the discarded syringe needle. Despite warnings from medical and health authorities, there are instances where syringe needles are reused and so provision to prevent this would be of benefit in combatting transmission of infection.
- the second embodiment of the invention is constructed with such provision.
- the second embodiment is shown in Figs. 9 and 10 of the accompanying drawings and is substantially the same as the first embodiment with the exception that a weakened section 63 is provided in the nozzle 17 of the syringe inwardly of the external thread formation 27.
- the weakened section 63 is established by the provision of SE zone of reduced cross-sectional area in the nozzle.
- the protective sheath 12 is not unscrewed from the syringe 11 after completion of the injection but rather the nozzle is fractured at the weakened section to effect such separation.
- the portion 65 of the nozzle outwardly of the weakened section remains in the socket 59 of the needle following separation of the nozzle and a protective sheath.
- the presence of portion 65 of the nozzle in the socket of the syringe needle deters reuse of the syringe needle as it would be necessary to remove the nozzle portion 65 from the socket before a further syringe could be connected to the needle. Additionally, fracturing of the nozzle renders the syringe useless.
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AUPI779288 | 1988-04-18 | ||
AU7792/88 | 1988-04-18 | ||
US07/274,204 US4968304A (en) | 1988-10-20 | 1988-11-21 | Syringe |
US274204 | 1988-11-21 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0413697A1 true EP0413697A1 (fr) | 1991-02-27 |
EP0413697A4 EP0413697A4 (en) | 1991-05-15 |
Family
ID=25643464
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19890903665 Withdrawn EP0413697A4 (en) | 1988-04-18 | 1989-03-22 | Syringe and protective needle sheath |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0413697A4 (fr) |
WO (1) | WO1989010150A1 (fr) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2662363A1 (fr) * | 1990-05-23 | 1991-11-29 | Codepharm | Ensemble de seringue et d'aiguille a usage unique, non reutilisables. |
WO1992021393A1 (fr) * | 1991-05-26 | 1992-12-10 | Arturo Moises Gotthelf | Dispositif de securite pour seringue medicale |
DE4127343A1 (de) * | 1991-08-19 | 1992-02-27 | Schuett Hans Werner Prof Dr | Vorrichtung zum schutze vor verletzungen durch spritzen mit nadeln, kanuelen oder duesen aller art, insbesondere im medizinischen bereich |
JP3095158B2 (ja) * | 1993-07-23 | 2000-10-03 | 株式会社ニッショー | 注射器組立体 |
US5385557A (en) * | 1994-04-04 | 1995-01-31 | Thompson; Clarence J. | Shielding device for a syringe needle |
US5545145A (en) * | 1994-08-16 | 1996-08-13 | Becton Dickinson And Company | Pen needle despenser |
EP2355861B1 (fr) | 2008-11-26 | 2020-08-05 | Becton, Dickinson and Company | Seringue autobloquante à usage unique |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3320954A (en) * | 1963-12-30 | 1967-05-23 | Pharmaseal Lab | Hypodermic syringe with breakable polypropylene needle adaptor |
US4772272A (en) * | 1987-05-11 | 1988-09-20 | Mcfarland Barton C | Needle protective sleeve |
EP0299287A1 (fr) * | 1987-07-15 | 1989-01-18 | George W. Poncy | Seringue hypodermique sans risque de piqûre |
FR2620942A1 (fr) * | 1987-09-24 | 1989-03-31 | Brunel Marc | Embout d'injection pour seringue, notamment du type a usage unique pour le domaine dentaire |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2828743A (en) * | 1957-06-17 | 1958-04-01 | American Home Prod | Snap-on cartridge-needle unit |
DE3590601D2 (en) * | 1984-11-21 | 1987-11-19 | Ewald Pickhard | Injection syringe |
US4592744A (en) * | 1985-08-14 | 1986-06-03 | The University Of Virginia Alumni Patents Foundation | Self-resheathing needle assembly |
US4655751A (en) * | 1986-02-14 | 1987-04-07 | Harbaugh John T | Liquid dispensing and receiving syringe |
US4702738A (en) * | 1986-05-22 | 1987-10-27 | Spencer Treesa A | Disposable hypodermic syringe and needle combination having retractable, accident preventing sheath |
GB8705284D0 (en) * | 1987-03-06 | 1987-04-08 | Secr Defence | Hypodermic needle apparatus |
US4740205A (en) * | 1987-07-23 | 1988-04-26 | Leilani Seltzer | Disposable needle system |
-
1989
- 1989-03-22 EP EP19890903665 patent/EP0413697A4/en not_active Withdrawn
- 1989-03-22 WO PCT/AU1989/000117 patent/WO1989010150A1/fr not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3320954A (en) * | 1963-12-30 | 1967-05-23 | Pharmaseal Lab | Hypodermic syringe with breakable polypropylene needle adaptor |
US4772272A (en) * | 1987-05-11 | 1988-09-20 | Mcfarland Barton C | Needle protective sleeve |
EP0299287A1 (fr) * | 1987-07-15 | 1989-01-18 | George W. Poncy | Seringue hypodermique sans risque de piqûre |
FR2620942A1 (fr) * | 1987-09-24 | 1989-03-31 | Brunel Marc | Embout d'injection pour seringue, notamment du type a usage unique pour le domaine dentaire |
Non-Patent Citations (1)
Title |
---|
See also references of WO8910150A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP0413697A4 (en) | 1991-05-15 |
WO1989010150A1 (fr) | 1989-11-02 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19901119 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
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A4 | Supplementary search report drawn up and despatched |
Effective date: 19910328 |
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AK | Designated contracting states |
Kind code of ref document: A4 Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
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17Q | First examination report despatched |
Effective date: 19930316 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19930727 |