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1. WO1991000114 - SYRINGE APPARATUS HAVING IMPROVED PLUNGER

Publication Number WO/1991/000114
Publication Date 10.01.1991
International Application No. PCT/US1990/002161
International Filing Date 20.04.1990
Chapter 2 Demand Filed 27.12.1990
IPC
A61M 5/315 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
178Syringes
31Details
315Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod; Appliances on the rod for facilitating dosing
CPC
A61M 5/315
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
178Syringes
31Details
315Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod ; or piston; Appliances on the rod for facilitating dosing ; ; Dosing mechanisms
A61M 5/31511
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
178Syringes
31Details
315Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod ; or piston; Appliances on the rod for facilitating dosing ; ; Dosing mechanisms
31511Piston or piston-rod constructions, e.g. connection of piston with piston-rod
A61M 5/31513
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
178Syringes
31Details
315Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod ; or piston; Appliances on the rod for facilitating dosing ; ; Dosing mechanisms
31511Piston or piston-rod constructions, e.g. connection of piston with piston-rod
31513Piston constructions to improve sealing or sliding
A61M 5/347
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
178Syringes
31Details
32Needles; Details of needles pertaining to their connection with syringe or hub
34Constructions for connecting the needle ; , e.g. to syringe nozzle or needle hub
347rotatable, e.g. bayonet or screw
Applicants
  • ULTRADENT PRODUCTS, INC. [US/US]; 1345 East 3900 South Salt Lake City, UT 84124, US
Inventors
  • FISCHER, Dan, E.; US
Agents
  • NYDEGGER, Rick, D. ; Workman, Nydegger & Jensen 1000 Eagle Gate Tower 60 East South Temple Salt Lake City, UT 84111, US
Priority Data
370,61823.06.1989US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SYRINGE APPARATUS HAVING IMPROVED PLUNGER
(FR) SERINGUE A PLONGEUR AMELIORE
Abstract
(EN)
An improved syringe apparatus (10) in which the plunger tip is fabricated as a unitary part of the plunger (22). The plunger tip (26) is provided with two contact members (28, 30) in contact with the cylindrical bore wall (16) of the syringe barrel (12). The first contact member (28) is provided by a circular rim which is bowl shaped and which projects forwardly at the end of the plunger (22). The second contact member (30) is provided by a circular ring located slightly behind the first sealing member (28). The entire plunger (22), including both contact members (28, 30), are preferably fabricated as a unitary structure from, for example, polypropylene or other material which is relatively resistant to degradation due to chemicals stored over prolonged periods of time in the syringe barrel (12).
(FR)
Seringue améliorée (10) dans laquelle le bout du plongeur se présente sous la forme d'une partie unitaire dudit plongeur (22). Le bout (26) dudit plongeur comporte deux éléments de contact (28, 30) en contact avec la paroi de l'alésage cylindrique (16) du cylindre de la seringue (12). Ledit premier élément de contact (28) comporte un rebord circulaire de forme évasée et saillant vers l'avant, au niveau de l'extrémité dudit plongeur (22). Ledit second élément de contact (30) comporte un anneau circulaire situé légèrement derrière le premier élément d'obturation (28). Ledit plongeur (22) dans son intégralité, ainsi que les deux éléments de contact (28, 30), se présentent de préférence sous la forme d'une structure unitaire, par exemple, en polypropylène ou en une autre matière relativement résistante à la dégradation engendrée par les produits chimiques stockés pendant des périodes de temps prolongées dans le cylindre de la seringue (12).
Also published as
Latest bibliographic data on file with the International Bureau