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1. WO2005070483 - NEEDLE-FREE INJECTION DEVICE

Publication Number WO/2005/070483
Publication Date 04.08.2005
International Application No. PCT/GB2005/000063
International Filing Date 11.01.2005
IPC
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
M
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
5
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
178
Syringes
20
Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
M
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
5
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
178
Syringes
30
Syringes for injection by jet action, without needle, e.g. for use with replaceable ampoules or cartridges
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
M
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
5
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
178
Syringes
31
Details
315
Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod; Appliances on the rod for facilitating dosing
A61M 5/20 (2006.01)
A61M 5/30 (2006.01)
A61M 5/315 (2006.01)
CPC
A61M 2205/581
A61M 2205/582
A61M 2205/583
A61M 5/2053
A61M 5/30
A61M 5/31551
Applicants
  • THE MEDICAL HOUSE PLC [GB/GB]; 201 Newhall Road Attercliffe Sheffield S9 2QJ, GB (AllExceptUS)
  • STAMP, Kevin [GB/GB]; GB (UsOnly)
Inventors
  • STAMP, Kevin; GB
Agents
  • HARRISON GODDARD FOOTE ; Fountain Precinct Balm Green Sheffield S1 2JA, GB
Priority Data
0401567.326.01.2004GB
10/767,85928.01.2004US
245593027.01.2004CA
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) NEEDLE-FREE INJECTION DEVICE
(FR) DISPOSITIF D'INJECTION SANS AIGUILLE
Abstract
(EN)
A disposable gas-powered needle-free injection device comprising an outer housing (1) having a nozzle (3) for medicament at a forward end thereof; an inner housing (5) located at least partly within the outer housing; a piston (12) and ram (11) which can be driven into the nozzle, in use, to drive medicament through the nozzle; a pierceable gas cylinder (13) for providing driving power to the ram and piston; wherein the inner housing is axially moveable away from said nozzle, said axial movement being guided by cooperating guide means on said inner and outer housings and enabling a desired dose of medicament to be drawn into said nozzle, ready for injection.
(FR)
La présente invention concerne un dispositif d'injection sans aiguille à gaz jetable qui comprend un boîtier externe (1) présentant une buse (3) pour un médicament à une extrémité avant, un boîtier interne (5) situé au moins partiellement à l'intérieur du boîtier externe, un piston (12) et un coulisseau (11) qui peuvent être entraînés dans la buse, en service, afin de conduire le médicament à travers la buse, ainsi qu'un cylindre à gaz perçable (13) permettant de fournir la puissance d'entraînement au coulisseau et au piston. Le boîtier interne peut se déplacer en direction axiale de manière à s'éloigner de la buse. Un tel mouvement axial est guidé par des systèmes de guidages coopérants qui se trouvent sur les boîtiers interne et externe et autorise une dose souhaitée de médicament d'être tirée dans la buse, prête à être injectée.
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