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1. WO2012136570 - PISTON ROD RELEASE MECHANISM

Publication Number WO/2012/136570
Publication Date 11.10.2012
International Application No. PCT/EP2012/055712
International Filing Date 29.03.2012
IPC
A61M 5/19 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
19having more than one chamber
A61M 5/20 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
20Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
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 5/31501
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
31501Means for blocking or restricting the movement of the rod or piston
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 5/31515
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
31515Connection of piston with piston rod
A61M 5/5066
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
5066Means for preventing re-use by disconnection of piston and piston-rod
Applicants
  • NOVO NORDISK HEALTH CARE AG [CH]/[CH] (AllExceptUS)
  • HANSEN, Søren Kjellerup [DK]/[DK] (UsOnly)
  • EILERTSEN, Lars [DK]/[DK] (UsOnly)
Inventors
  • HANSEN, Søren Kjellerup
  • EILERTSEN, Lars
Priority Data
11161004.404.04.2011EP
61/472,48306.04.2011US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) PISTON ROD RELEASE MECHANISM
(FR) MÉCANISME DE LIBÉRATION DE TIGE DE PISTON
Abstract
(EN)
A release mechanism for a piston (8) /piston rod (14) coupling in a drug delivery device is provided, said release mechanism comprises a release element which undergoes relative displacement with respect to the piston rod from a first position to a second position in response to the piston reaching a predefined position relative to the reservoir wall, thereby enabling relative motion between the piston and the piston rod.
(FR)
La présente invention concerne un mécanisme de libération pour un accouplement piston (8)/tige de piston (14) dans un dispositif d'administration de médicament. Ledit mécanisme de libération comprend un élément de libération qui subit un déplacement relatif par rapport à la tige de piston, d'une première position à une seconde position, lorsque le piston a atteint une position prédéfinie par rapport à la paroi de réservoir, permettant ainsi un mouvement relatif entre le piston et la tige de piston.
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