WO2000041494A3 - Safety syringe assembly - Google Patents

Safety syringe assembly Download PDF

Info

Publication number
WO2000041494A3
WO2000041494A3 PCT/IB2000/000030 IB0000030W WO0041494A3 WO 2000041494 A3 WO2000041494 A3 WO 2000041494A3 IB 0000030 W IB0000030 W IB 0000030W WO 0041494 A3 WO0041494 A3 WO 0041494A3
Authority
WO
WIPO (PCT)
Prior art keywords
barrel
formation
piston
lip
safety syringe
Prior art date
Application number
PCT/IB2000/000030
Other languages
French (fr)
Other versions
WO2000041494A2 (en
Inventor
Peter Balfour Dugmore
Anthony Eric Bull
Stanford William Glad Reynolds
Original Assignee
Peter Balfour Dugmore
Anthony Eric Bull
Stanford William Glad Reynolds
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 Peter Balfour Dugmore, Anthony Eric Bull, Stanford William Glad Reynolds filed Critical Peter Balfour Dugmore
Priority to AU2000218862A priority Critical patent/AU2000218862A1/en
Publication of WO2000041494A2 publication Critical patent/WO2000041494A2/en
Publication of WO2000041494A3 publication Critical patent/WO2000041494A3/en

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
    • A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston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
    • A61M5/50—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
    • 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
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
    • A61M5/31513—Piston constructions to improve sealing or sliding
    • 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
    • A61M5/34—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
    • A61M5/347—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub rotatable, e.g. bayonet or screw

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

A hypodermic safety syringe assembly (120) comprises a cylindrical barrel (12A) having a front opening (18A) and a rear opening (26A). A piston assembly (28A) is arranged to travel reciprocally within the barrel. The piston assembly includes a retractor (124) which terminates in a front piston formation (122). A closure member (132) is formed with a central spigot formation (134) extending from a skirt (136) which is provided with an outer peripheral lip (138), just inwardly of which is formed an inner lip (140) for engaging a complemental channel formation (142) defined towards the outer periphery of the piston formation (122). The rib (138) locates within a complemental foremost groove (144) formed in the inner face of the barrel (12A). The lip (140) is arranged to engage with the channel formation (142) to disengage the closure member from the front end of the barrel so that the spigot and the needle attached thereto can be withdrawn into a locked safe position within the barrel after use.
PCT/IB2000/000030 1999-01-11 2000-01-11 Safety syringe assembly WO2000041494A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2000218862A AU2000218862A1 (en) 1999-01-11 2000-01-11 Safety syringe assembly

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA99/0164 1999-01-11
ZA99164 1999-01-11

Publications (2)

Publication Number Publication Date
WO2000041494A2 WO2000041494A2 (en) 2000-07-20
WO2000041494A3 true WO2000041494A3 (en) 2000-09-28

Family

ID=25587513

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2000/000030 WO2000041494A2 (en) 1999-01-11 2000-01-11 Safety syringe assembly

Country Status (2)

Country Link
AU (1) AU2000218862A1 (en)
WO (1) WO2000041494A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1284768A2 (en) * 2000-05-10 2003-02-26 Peter Balfour Dugmore Safety syringe assembly
EP1735033B1 (en) * 2004-04-16 2011-01-05 Theodor Schöttli Plunger head for a two-piece injection syringe
JP6970402B2 (en) * 2015-07-06 2021-11-24 メリット・メディカル・システムズ・インコーポレイテッドMerit Medical Systems, Inc. Reinforcing syringe body
GB2544278B (en) * 2015-11-10 2017-11-08 Gbuk Group Ltd Syringes and inserts for syringes
WO2019094763A1 (en) 2017-11-13 2019-05-16 Merit Medical Systems, Inc. Staged deflation syringe systems and associated methods

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0636381A2 (en) * 1993-07-26 1995-02-01 Finestyle Properties Limited Disposable syringe with a retractable needle
US5401246A (en) * 1991-06-13 1995-03-28 U.S. Medical Instruments, Inc. Retractable syringe with a closed barrel
US5466226A (en) * 1994-07-15 1995-11-14 A.P.I.S. Medical B.V. Injection assembly with a suction needle and a retractable injection needle
US5489272A (en) * 1993-10-18 1996-02-06 Medi Plus Tec Medizinisch-Technische Handelgesellschaft Mbh Injection syringe
EP0818209A1 (en) * 1995-08-22 1998-01-14 Long-Hsiung Chen Safety minute dose hypodermic syringe
US5810782A (en) * 1993-03-12 1998-09-22 Saito; Yoshikuni Hub for syringe, connecting structure of hub, syringe, syringe assembly and method of assembling syringe assembly

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5401246A (en) * 1991-06-13 1995-03-28 U.S. Medical Instruments, Inc. Retractable syringe with a closed barrel
US5810782A (en) * 1993-03-12 1998-09-22 Saito; Yoshikuni Hub for syringe, connecting structure of hub, syringe, syringe assembly and method of assembling syringe assembly
EP0636381A2 (en) * 1993-07-26 1995-02-01 Finestyle Properties Limited Disposable syringe with a retractable needle
US5489272A (en) * 1993-10-18 1996-02-06 Medi Plus Tec Medizinisch-Technische Handelgesellschaft Mbh Injection syringe
US5466226A (en) * 1994-07-15 1995-11-14 A.P.I.S. Medical B.V. Injection assembly with a suction needle and a retractable injection needle
EP0818209A1 (en) * 1995-08-22 1998-01-14 Long-Hsiung Chen Safety minute dose hypodermic syringe

Also Published As

Publication number Publication date
AU2000218862A1 (en) 2000-08-01
WO2000041494A2 (en) 2000-07-20

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