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1. WO2004009165 - SINGLE USE SYRINGE AND PLUNGER ROD LOCKING DEVICE THEREFOR

Publication Number WO/2004/009165
Publication Date 29.01.2004
International Application No. PCT/US2003/017421
International Filing Date 03.06.2003
Chapter 2 Demand Filed 12.02.2004
IPC
A61M 5/50 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES 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
5Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm rests
50having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
CPC
A61M 2005/5033
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
5Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
50having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
5013Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe
502for blocking the piston
5033by use of an intermediate blocking member positioned between the syringe barrel and the piston rod to prevent retraction of the latter, e.g. toothed clip placed on the piston rod
A61M 5/5013
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
5Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
50having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
5013Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe
A61M 5/502
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
5Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
50having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
5013Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe
502for blocking the piston
Applicants
  • BECTON DICKINSON AND COMPANY [US]/[US]
Inventors
  • PELKEY, Brian, J.
  • LAU, Steven, Choon, Meng
  • MOH, Yaohan
  • CHUA, Chui Khim
Agents
  • VOELLMICKE, John, L.
Priority Data
10/199,41219.07.2002US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SINGLE USE SYRINGE AND PLUNGER ROD LOCKING DEVICE THEREFOR
(FR) SERINGUE A USAGE UNIQUE ET DISPOSITIF DE BLOCAGE DE LA TIGE DU PLONGEUR
Abstract
(EN)
A single use syringe assembly (20) is provided as well as a locking element (54) for such an assembly. The single use syringe assembly includes a barrel (22), a plunger rod (40) assembly and a locking element positioned within the barrel. The locking element includes on or more barbs (70, 72) for engaging the inside surface of the barrel. The barbs prevent the locking element from moving proximally within the barrel, but allow its distal movement therein with the plunger rod assembly. A spring member may be provided for urging the barbs towards the inside surface of the barrel. Structure provided for holding the proximal end and the distal end of the plunger rod assembly together during normal use of the syringe is breakable upon application of an additional force applied to the proximal end of the plunger rod.
(FR)
L'invention porte sur un ensemble seringue à usage unique (20) ainsi que sur un élément de blocage (54) de cet ensemble. L'ensemble seringue à usage unique comprend un cylindre (22), une tige de plongeur (40) et un élément de blocage positionné dans le cylindre. L'élément de blocage comprend une ou plusieurs barbes (70, 72) destinées à venir en contact avec la surface intérieure du cylindre. Les barbes empêchent l'élément de blocage de se déplacer de façon proximale à l'intérieur du cylindre, mais permet son déplacement distal avec l'ensemble tige de plongeur. Un élément à ressort peut être ménagé de sorte que celui-ci pousse les barbes contre la surface intérieure du cylindre. La structure, destinée à maintenir ensemble l'extrémité proximale et l'extrémité distale de l'ensemble tige de plongeur au cours d'une utilisation normale de la seringue, est cassable lorsqu'on applique une force additionnelle sur l'extrémité proximale de la tige de plongeur.
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