GB2012590A - An improved syringe - Google Patents

An improved syringe

Info

Publication number
GB2012590A
GB2012590A GB7900771A GB7900771A GB2012590A GB 2012590 A GB2012590 A GB 2012590A GB 7900771 A GB7900771 A GB 7900771A GB 7900771 A GB7900771 A GB 7900771A GB 2012590 A GB2012590 A GB 2012590A
Authority
GB
United Kingdom
Prior art keywords
barrel
plug
flanges
annular
plunger
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
GB7900771A
Other versions
GB2012590B (en
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.)
Kendall Co
Original Assignee
Kendall Co
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 Kendall Co filed Critical Kendall Co
Publication of GB2012590A publication Critical patent/GB2012590A/en
Application granted granted Critical
Publication of GB2012590B publication Critical patent/GB2012590B/en
Expired legal-status Critical Current

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
    • A61M5/315—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

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

A low friction syringe, comprising a barrel 12, a plunger 14 having its distal end received in the barrel and a plug 16 of elastic material having a body portion secured to the distal end of the plunger. The plug has front and rear annular flanges 36, 42, each having an annular lip 38, 44 lightly contacting the inner surface of the barrel and an annular hinge portion 40, 46 disposed between the body portion and the lip which permits flexure of the flange in response to differential pressures between a cavity 48 between the flanges and either the interior of the barrel or the atmosphere. The flanges also permit free movement of the plug in the barrel with relatively low friction between the plug and barrel. <IMAGE>
GB7900771A 1978-01-16 1979-01-09 Syringe Expired GB2012590B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US86972978A 1978-01-16 1978-01-16

Publications (2)

Publication Number Publication Date
GB2012590A true GB2012590A (en) 1979-08-01
GB2012590B GB2012590B (en) 1982-06-16

Family

ID=25354152

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7900771A Expired GB2012590B (en) 1978-01-16 1979-01-09 Syringe

Country Status (2)

Country Link
CA (1) CA1123696A (en)
GB (1) GB2012590B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0654280A1 (en) * 1993-11-19 1995-05-24 Firma Carl Freudenberg Disposable syringe
WO1999020330A1 (en) * 1997-10-23 1999-04-29 Bristol-Myers Squibb Company Preloadable syringe for automated dispensing device
WO1999044659A1 (en) * 1998-03-02 1999-09-10 Medrad, Inc. Syringes and plungers for use therein
WO1999055401A1 (en) * 1998-04-27 1999-11-04 Computer Controlled Syringe Inc. Syringe with detachable syringe barrel

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0654280A1 (en) * 1993-11-19 1995-05-24 Firma Carl Freudenberg Disposable syringe
WO1999020330A1 (en) * 1997-10-23 1999-04-29 Bristol-Myers Squibb Company Preloadable syringe for automated dispensing device
WO1999044659A1 (en) * 1998-03-02 1999-09-10 Medrad, Inc. Syringes and plungers for use therein
US6224577B1 (en) 1998-03-02 2001-05-01 Medrad, Inc. Syringes and plungers for use therein
WO1999055401A1 (en) * 1998-04-27 1999-11-04 Computer Controlled Syringe Inc. Syringe with detachable syringe barrel
US6582399B1 (en) 1998-04-27 2003-06-24 Computer Controlled Syringe Inc. Syringe with detachable syringe barrel

Also Published As

Publication number Publication date
CA1123696A (en) 1982-05-18
GB2012590B (en) 1982-06-16

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee