CA2533446A1 - Actuator and containment device for a syringe - Google Patents

Actuator and containment device for a syringe Download PDF

Info

Publication number
CA2533446A1
CA2533446A1 CA002533446A CA2533446A CA2533446A1 CA 2533446 A1 CA2533446 A1 CA 2533446A1 CA 002533446 A CA002533446 A CA 002533446A CA 2533446 A CA2533446 A CA 2533446A CA 2533446 A1 CA2533446 A1 CA 2533446A1
Authority
CA
Canada
Prior art keywords
syringe
barrel
plunger
spring
needle
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
Application number
CA002533446A
Other languages
French (fr)
Other versions
CA2533446C (en
Inventor
Peter Jeffrey
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Safe T Ltd
Original Assignee
Safe-T Limited
Peter Jeffrey
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Safe-T Limited, Peter Jeffrey filed Critical Safe-T Limited
Publication of CA2533446A1 publication Critical patent/CA2533446A1/en
Application granted granted Critical
Publication of CA2533446C publication Critical patent/CA2533446C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • A61M5/326—Fully automatic sleeve extension, i.e. in which triggering of the sleeve does not require a deliberate action by the user
    • 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
    • A61M5/3234—Fully automatic needle retraction, i.e. in which triggering of the needle does not require a deliberate action by the user
    • 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
    • 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
    • A61M5/326—Fully automatic sleeve extension, i.e. in which triggering of the sleeve does not require a deliberate action by the user
    • A61M2005/3261—Fully automatic sleeve extension, i.e. in which triggering of the sleeve does not require a deliberate action by the user triggered by radial deflection of the anchoring parts between sleeve and syringe barrel, e.g. spreading of sleeve retaining hooks having slanted surfaces by engagement with conically shaped collet of the piston rod during the last portion of the injection stroke of the plunger

Abstract

To eliminate needle-stick risk by encapsulating the needle of a syringe immediately after discharge of syringe contents (43), the entire syringe, such as a pre-filled miniature glass syringe (40), is housed in a device comprising a hollow body (10), a spring (20) and a plunger (30). The barrel (41) of the syringe (40) is held in the body interior against the force of the spring (20) by latching formations (IS) internal to the body (10). The plunger (30) itself is hollow so as to provide a chamber (36) to receive the syringe piston means (45, 46) and at least part of the barrel (41) upon retraction of the syringe.
The plunger (30) has deflectable engagement elements (33) at its forward end so that as it is pushed in to the body (10), it reliably displaces the syringe piston/rod (45, 46) to discharge the syringe contents (43) via a hollow needle (42), the elements (33) ultimately being deflected outwards as the contents are fully discharged so as not to impede syringe retraction into the hollow plunger (30). The plunger (30) also has latch opening projections (34) at its forward end which, as the plunger (30) is pushed home, serve to disengage, e.g. by deflection, the latch formations (18). The syringe barrel (41), together with the needle (42) and piston means (45, 46) are then immediately retracted into the device by force of the spring (20).

Claims (12)

1. An actuator and containment device for a syringe of the type comprising at least a barrel and piston means displaceable within the barrel to expel any contents of the barrel, usually via a hollow needle, said device comprising a hollow body, a spring and a plunger, in which respect the hollow body has internal latching formations and is adapted to house the syringe barrel and piston means with any needle projecting outside the body, the spring is disposed to act between the body and the syringe barrel, which barrel, in initial use of the device, is retained against the force of the spring by means of the latching formations, and the plunger is slidably located in the body to displace the piston means of the syringe, provides means whereby the latching formations of the body can be disengaged from the syringe barrel enabling the spring to retract the entire syringe, including any needle, into the hollow body, and also provides a chamber for reception of at least a portion of the syringe after the spring has so acted, characterised in that the plunger has deflectable edge members whereby it can abut and displace the piston rod and the hollow body has internal deflector means which serve to deflect the edge members of the plunger out of the path of retraction of the syringe barrel.
2. A device according to claim 1 wherein the hollow body is generally of cylindrical form and has a longitudinal axis and also defines a main chamber in which the plunger is slidably located and a forward chamber which is of smaller cross-section than the main chamber and extends from the main chamber beyond the end of plunger movement to house the syringe barrel in initial use of the device.
3. A device according to claim 2 wherein the latching formations of the body are provided in the main chamber of the body adjacent to the forward chamber but lying radially outwardly with respect to the forward chamber.
4. A device according to claim 2 or 3 wherein the latching formations extend generally parallel with the longitudinal axis of the hollow body to free ends which have radially inwardly directed catch means for retaining the syringe barrel against the force of the spring, the latching formations also being deflectable radially outwardly to enable capture of the syringe barrel by said catch means and its later release therefrom.
5. A device according to claim 4 wherein the plunger and the latching formations have co-operating surface portions whereby the plunger can effect radially outward deflection of the latching formations to release the syringe barrel from the catch means.
6. A device according to any of claims 2 to 5 wherein the hollow body and the plunger have mutually co-operating guide means which extend substantially parallel to the longitudinal axis of the body and minimize relative rotation between the body and the plunger.
7. A device according to any preceding claim wherein the hollow body is moulded in one piece and the latching formations are integrally moulded therewith.
8. A device according to any preceding claim wherein the latching formations are symmetrically arranged in the interior of the hollow body.
9. A device according to any preceding claim wherein the deflectable edge members are symmetrically arranged at the forward edge of the plunger.
10. A device according to any preceding claim consisting of only a hollow body, a spring and a plunger.
11. An assembly comprising a syringe and an actuator and containment device for said syringe as claimed in any preceding claim, said syringe comprising a barrel, a hollow needle, and piston means displaceable within the barrel to expel contents of the barrel via said needle, wherein the hollow body of the device houses the syringe barrel and piston means with the needle initially projecting outside the body and the spring is disposed inside the body and acts between the body of the device and the barrel of the syringe.
12. An assembly comprising a syringe and an actuator and containment device for said syringe as claimed in any of claims 1 to 10, said syringe comprising at least a barrel and piston means displaceable within the barrel to expel contents of the barrel, usually via a needle, wherein the hollow body of the device houses the syringe barrel and piston means and the spring is disposed inside the body and acts between the body of the device and the barrel of the syringe.
CA2533446A 2003-07-30 2004-07-05 Actuator and containment device for a syringe Expired - Fee Related CA2533446C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB0317800A GB2404338B (en) 2003-07-30 2003-07-30 Actuator and containment device for a syringe
GB0317800.1 2003-07-30
PCT/GB2004/002921 WO2005014088A1 (en) 2003-07-30 2004-07-05 Actuator and containment device for a syringe

Publications (2)

Publication Number Publication Date
CA2533446A1 true CA2533446A1 (en) 2005-02-17
CA2533446C CA2533446C (en) 2011-08-09

Family

ID=27799449

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2533446A Expired - Fee Related CA2533446C (en) 2003-07-30 2004-07-05 Actuator and containment device for a syringe

Country Status (11)

Country Link
US (1) US7670313B2 (en)
EP (1) EP1651295B1 (en)
JP (1) JP4611300B2 (en)
AT (1) ATE425783T1 (en)
AU (1) AU2004262966B2 (en)
CA (1) CA2533446C (en)
DE (1) DE602004020071D1 (en)
DK (1) DK1651295T3 (en)
ES (1) ES2324666T3 (en)
GB (1) GB2404338B (en)
WO (1) WO2005014088A1 (en)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2414402B (en) 2004-05-28 2009-04-22 Cilag Ag Int Injection device
GB2414400B (en) 2004-05-28 2009-01-14 Cilag Ag Int Injection device
GB2414775B (en) 2004-05-28 2008-05-21 Cilag Ag Int Releasable coupling and injection device
GB2424836B (en) 2005-04-06 2010-09-22 Cilag Ag Int Injection device (bayonet cap removal)
GB2425062B (en) * 2005-04-06 2010-07-21 Cilag Ag Int Injection device
GB2427826B (en) 2005-04-06 2010-08-25 Cilag Ag Int Injection device comprising a locking mechanism associated with integrally formed biasing means
EP1759729B1 (en) 2005-08-30 2009-12-23 Cilag GmbH International Needle assembly for a prefilled syringe system
US20110098656A1 (en) 2005-09-27 2011-04-28 Burnell Rosie L Auto-injection device with needle protecting cap having outer and inner sleeves
GB2438590B (en) 2006-06-01 2011-02-09 Cilag Gmbh Int Injection device
GB2438591B (en) 2006-06-01 2011-07-13 Cilag Gmbh Int Injection device
GB2438593B (en) 2006-06-01 2011-03-30 Cilag Gmbh Int Injection device (cap removal feature)
JP5372350B2 (en) * 2006-08-25 2013-12-18 大日本住友製薬株式会社 Syringe and plunger rod
GB2461086B (en) 2008-06-19 2012-12-05 Cilag Gmbh Int Injection device
GB2461089B (en) 2008-06-19 2012-09-19 Cilag Gmbh Int Injection device
GB2461084B (en) 2008-06-19 2012-09-26 Cilag Gmbh Int Fluid transfer assembly
GB2461087B (en) 2008-06-19 2012-09-26 Cilag Gmbh Int Injection device
GB2461085B (en) 2008-06-19 2012-08-29 Cilag Gmbh Int Injection device
GB2517896B (en) 2013-06-11 2015-07-08 Cilag Gmbh Int Injection device
GB2515032A (en) 2013-06-11 2014-12-17 Cilag Gmbh Int Guide for an injection device
GB2515038A (en) 2013-06-11 2014-12-17 Cilag Gmbh Int Injection device
GB2515039B (en) 2013-06-11 2015-05-27 Cilag Gmbh Int Injection Device
WO2023078885A1 (en) 2021-11-02 2023-05-11 Roncadelle Operations Srl Retractable prefilled syringe with collapsible plunger

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FR2650187B2 (en) * 1989-06-27 1992-01-17 Guerineau Jean SELF-RETRACTING NEEDLE-SYRINGE COMBINATION
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GB9107647D0 (en) * 1991-04-11 1991-05-29 Jeffrey Peter Syringe construction providing needle point protection
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Also Published As

Publication number Publication date
GB2404338B (en) 2007-01-24
GB0317800D0 (en) 2003-09-03
JP2007501024A (en) 2007-01-25
US7670313B2 (en) 2010-03-02
DE602004020071D1 (en) 2009-04-30
EP1651295A1 (en) 2006-05-03
ES2324666T3 (en) 2009-08-12
AU2004262966A1 (en) 2005-02-17
WO2005014088A1 (en) 2005-02-17
JP4611300B2 (en) 2011-01-12
CA2533446C (en) 2011-08-09
US20060253073A1 (en) 2006-11-09
ATE425783T1 (en) 2009-04-15
GB2404338A (en) 2005-02-02
DK1651295T3 (en) 2009-07-13
AU2004262966B2 (en) 2008-09-25
EP1651295B1 (en) 2009-03-18

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20160705